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####### # # E-scripts on ffmpeg and avconv. # # Note 1: use the eev command (defined in eev.el) and the # ee alias (in my .zshrc) to execute parts of this file. # Executing this file as a whole makes no sense. # An introduction to eev can be found here: # # (find-eev-quick-intro) # http://angg.twu.net/eev-intros/find-eev-quick-intro.html # # Note 2: be VERY careful and make sure you understand what # you're doing. # # Note 3: If you use a shell other than zsh things like |& # and the for loops may not work. # # Note 4: I always run as root. # # Note 5: some parts are too old and don't work anymore. Some # never worked. # # Note 6: the definitions for the find-xxxfile commands are on my # .emacs. # # Note 7: if you see a strange command check my .zshrc -- it may # be defined there as a function or an alias. # # Note 8: the sections without dates are always older than the # sections with dates. # # This file is at <http://angg.twu.net/e/ffmpeg.e> # or at <http://angg.twu.net/e/ffmpeg.e.html>. # See also <http://angg.twu.net/emacs.html>, # <http://angg.twu.net/.emacs[.html]>, # <http://angg.twu.net/.zshrc[.html]>, # <http://angg.twu.net/escripts.html>, # and <http://angg.twu.net/>. # ####### # «.mailing-lists» (to "mailing-lists") # «.ffmpeg» (to "ffmpeg") # «.screencasts» (to "screencasts") # «.script-2012oct» (to "script-2012oct") # «.adding-audio» (to "adding-audio") # «.avconv-wheezy» (to "avconv-wheezy") # «.avconv» (to "avconv") # «.avconv-grab» (to "avconv-grab") # «.x11grab-problem-erasal» (to "x11grab-problem-erasal") # «.recordmydesktop» (to "recordmydesktop") # «.audio-quality» (to "audio-quality") # «.extract-audio» (to "extract-audio") # «.libav-deb-src» (to "libav-deb-src") # «.key-frames» (to "key-frames") # «.extract-frame» (to "extract-frame") # «.dvd-subtitles» (to "dvd-subtitles") # «.audio-plus-photos-to-video» (to "audio-plus-photos-to-video") # «.mono» (to "mono") # «.extract-part-of-mp3» (to "extract-part-of-mp3") # «.raising-volume» (to "raising-volume") # «.volume-2020» (to "volume-2020") # «.libav-git» (to "libav-git") # «.cover-picture» (to "cover-picture") # «.rotate» (to "rotate") # «.rotate-avconv» (to "rotate-avconv") # «.vichy-video» (to "vichy-video") # «.webm-to-mp4» (to "webm-to-mp4") # «.feury-concat» (to "feury-concat") # «.concat-kla» (to "concat-kla") # «.feury-cut» (to "feury-cut") # «.feury-cut-mnu4» (to "feury-cut-mnu4") # «.feury-replace-audio» (to "feury-replace-audio") # «.emacsconf2019-25» (to "emacsconf2019-25") # «.emacsconf2019-35» (to "emacsconf2019-35") # «.emacsconf2019-35end» (to "emacsconf2019-35end") # «.non-monotonous-dts» (to "non-monotonous-dts") # «.encode-vp9-two-pass» (to "encode-vp9-two-pass") # «.ffprobe» (to "ffprobe") # «.mediainfo» (to "mediainfo") # «.mkvtoolnix» (to "mkvtoolnix") # «.audio-to-video» (to "audio-to-video") # «.speed-up» (to "speed-up") # «.akater-tty-screenshot» (to "akater-tty-screenshot") # «.waveform» (to "waveform") # «.ffmpeg-buddy» (to "ffmpeg-buddy") # «.video-duration» (to "video-duration") # «.video-thumbnail» (to "video-thumbnail") # «.scale» (to "scale") # «.video-to-audio» (to "video-to-audio") # (find-es "screencasts") ##### # # mailing lists # 2012nov10 # ##### # «mailing-lists» (to ".mailing-lists") # http://ffmpeg.org/pipermail/ffmpeg-user/2012-February/004824.html # http://ffmpeg.org/pipermail/ffmpeg-user/ ##### # # ffmpeg # 2012feb04 # ##### # «ffmpeg» (to ".ffmpeg") # (find-angg "VIDEOS/Makefile") # (find-status "ffmpeg") # (find-vldifile "ffmpeg.list") # (find-udfile "ffmpeg/") # (find-status "ffmpeg-doc") # (find-vldifile "ffmpeg-doc.list") # (find-udfile "ffmpeg-doc/") # (find-udfile "ffmpeg-doc/html/") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) cd /tmp/ ffmpeg -i DSC_0141.MOV DSC_0141.flv ffmpeg -i DSC_0142.MOV DSC_0142.flv ffmpeg -i DSC_0142.MOV -ar 44100 DSC_0142.flv ffmpeg -i DSC_0142.MOV -ar 44100 -r 6 DSC_0142_6.mov ffmpeg -i DSC_0142.MOV -r 6 DSC_0142_6b.mov cd /tmp/ mplayer DSC_0142.MOV mplayer DSC_0142_6.MOV # http://ffmpeg-users.933282.n4.nabble.com/Error-message-video-frame-size-changed-td3314555.html # (find-fline "/etc/ffserver.conf") http://ffmpeg.org/faq.html http://sourceforge.net/projects/ffmpeg-gui/ http://ffmpeg-gui.sourceforge.net/ # (find-man "1 ffmpeg") # (find-man "1 ffmpeg" "extract images from a video") # (find-man "1 ffmpeg" "-r fps") # (find-man "1 ffmpeg" "-f fmt") # (find-man "1 ffmpeg" "-vsync parameter") # (find-man "1 ffmpeg" "ffmpeg -f x11grab") # (find-man "1 ffmpeg" "seek_point, sp") # (find-man "1 ffmpeg" "-ss position") # (find-man "1 ffmpeg" "-t duration") # (find-man "1 ffmpeg" "-b bitrate") # (find-man "1 ffplay") # (find-man "1 ffprobe") # (find-man "1 ffserver") # (find-sh "ffmpeg -h") # (find-sh "ffmpeg -formats") # (find-sh "ffmpeg -formats" "MOV") # (find-sh "ffmpeg -formats" "h264" "H.264") ffmpeg-doc http://www.rumourisnews.com/install_ffmpeg_on_debian.html http://linuxers.org/tutorial/how-slowdown-or-speed-video-using-ffmpeg-and-yuvfps http://howto-pages.org/ffmpeg/ http://stackoverflow.com/questions/1555771/which-frame-does-ffmpeg-get-when-reducing-the-frame-rate http://www.linuxquestions.org/questions/linux-general-1/ffmpeg-dramatic-decrease-in-size-from-camera-videos-660241/ http://answers.yahoo.com/question/index?qid=20080405224044AAq2015 http://canerblt.wordpress.com/2011/07/10/changing-fps-rate-of-a-video-with-ffmpeg/ <edrx> hello - how do I reduce the number of frames of a video? it's for recording a conference with few slides and a speaker who does not move too much... the camera produced a .mov with 24 fps, and I'd like to reduce that to 8 fps by keeping only 1 in each 3 frames... <edrx> (btw, I am on debian, and using the command line) <rypervenche> Hi all. My screencasting script broke a while back, apparently due to an update in ffmpeg. It uses x264, however at first I record lossless data. I have since fixed my script using "-vcodec libx264 -preset ultrafast", but is this lossless data? Should I be using somethign else? <rypervenche> Before I was using -vpre lossless_ultrafast. Is there still a lossless option or should I only use the ultrafast option? ##### # # Creating screencasts # 2012oct27 # ##### # «screencasts» (to ".screencasts") # http://ubuntuguide.org/wiki/Screencasts # http://wiki.nosdigitais.teia.org.br/Screencast # (find-man "1 ffmpeg") # (find-man "1 ffmpeg" "X11 grabbing") # (find-man "1 ffmpeg" "-s size" " cif") ffmpeg -f x11grab -s cif -r 25 -i :0.0+10,20 /tmp/out.mpg * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) ffmpeg -f x11grab -s cif -r 25 -i $DISPLAY /tmp/out.mpg laf /tmp/out.mpg rm -v /tmp/out.mpg ffmpeg -f x11grab -r 25 -i $DISPLAY /tmp/out.mpg laf /tmp/out.mpg # (find-video "/tmp/out.mpg") # (find-angg ".fvwm/.fvwm2rc" "moving-the-cursor") # (find-man "1 ffmpeg") * (eepitch-shell12) * (eepitch-shell) rm -v /tmp/out.mp* # sleep 3 && ffmpeg -loglevel quiet -f x11grab -s 540x600+0+0 -r 5 -i $DISPLAY /tmp/out.mp4 >& /dev/null * * (eepitch-shell) * (find-fvwm0 "CursorMove -1000p -1000p") * (find-fvwm0 "CursorMove +0 +100") * (eepitch-shell2) # (find-angg "eev-videos/video1.sh") ~/eev-videos/video1.sh xterm * (eepitch-shell2) killall ffmpeg killall -9 ffmpeg * (setq ee-mplayer-options '("-fs" "-title" "mplayer-fullscreen" "-osdlevel" "0")) * (find-mplayer "/tmp/out.mp4") * (find-mplayer0 "/tmp/out.mp4") * (setq ee-mplayer-options '("-fs" "-title" "mplayer-fullscreen" "-osdlevel" "2")) * (setq ee-mplayer-options '("-fs" "-osdlevel" "2")) # (find-angg ".emacs" "mplayer-options") ##### # # Header for screencast scripts, oct/2012 # 2012oct28 # ##### # «script-2012oct» (to ".script-2012oct") # (find-angg "eev-videos/1.sh") # (find-bashnode "Top") # (find-bashnode "Bourne Shell Builtins" "`shift'") # (find-bashnode "Bash Builtins" "`read'" "`-s'") # (find-es "console" "tput") # (find-man "5 terminfo" "setaf") # (find-man "5 terminfo" "setab") # (find-man "5 terminfo" "COLOR_YELLOW") # (find-man "5 terminfo" "COLOR_BLUE") # (find-man "5 terminfo" "COLOR_GREEN") # (find-man "5 terminfo" "bold") # Command-line arguments for screencasts fvwmdown () { FvwmCommand "CursorMove +0 +100"; } ffmpeggrab () { rm -f /tmp/out.mp4 nohup ffmpeg -loglevel quiet -f x11grab -i $DISPLAY $* /tmp/out.mp4 \ > /dev/null 2>&1 & } if [[ "$1" == "down" ]]; then fvwmdown; shift; fi if [[ "$1" == "ffmpeg" ]]; then ffmpeggrab -r 5 -s $2; shift 2; fi if [[ "$1" == "xterm" ]]; then G=$2; shift 2; exec xterm -T xterm -geometry $G -e $0 $* fi # Colors C0=$(tput sgr0) C1=$(tput setaf 3; tput setab 1; tput bold;) CB=$(tput bold; tput setaf 4) CG=$(tput setaf 2) # Sleep, sleep-then-echo, display-prompt-and-command, display-and-eval slep () { sleep $1; } slep () { stty -echo; read; stty echo; } slep () { read -s; } se () { read; echo "$2"; } se () { echo; slep $1; echo "$2"; } dpc () { echo -n "${CG}$PWD(edrx)\$${C0} "; slep 1; echo -n "$*"; slep 1; echo; } function de () { dpc "$*"; eval $*; } * (eepitch-shell2) * (eepitch-kill) * (eepitch-shell2) makeR1C e/ffmpeg.e.html # http://angg.twu.net/e/ffmpeg.e.html buffer-file-name buffer-name ##### # # Adding audio to a video # 2012oct28 # ##### # «adding-audio» (to ".adding-audio") # (find-fline "~/eev-videos/") # (find-man "1 ffmpeg" "-acodec") # (find-man "1 ffmpeg" "-newaudio") * (eepitch-shell2) * (eepitch-kill) * (eepitch-shell2) cd ~/eev-videos/ ffmpeg -i 2012oct28-intro-pt.mp4 \ -i 2012oct28-intro-pt.mp3 \ -vcodec copy \ -acodec copy \ -acodec copy \ eev-video.mp4 \ -newaudio ##### # # avconv on wheezy # 2013jun30 # ##### # «avconv-wheezy» (to ".avconv-wheezy") # (find-man "1 avconv") # (find-man "1 avprobe") # (find-man "1 avserver") # (find-man "1 avplay") # (find-man "1 qt-faststart") # (find-man "1 ffprobe") # (find-man "1 ffserver") # (find-man "1 ffplay") ##### # # avconv / libav-tools # 2012nov10 # ##### # «avconv» (to ".avconv") # http://packages.debian.org/squeeze-backports/ffmpeg # http://packages.debian.org/squeeze-backports/libav-tools # (find-status "libav-tools") # (find-vldifile "libav-tools.list") # (find-udfile "libav-tools/") # (find-man "1 avconv") # (find-man "1 avconv" "X11 grabbing") # (find-man "1 avconv" "qxga") # (find-angg "eev-videos/0.sh") # (find-angg "eev-videos/2.sh") * (eepitch-bash) * (eepitch-kill) * (eepitch-bash) rm -v /tmp/out.log rm -v /tmp/out.mp4 source ~/eev-videos/0.sh ffmpeg-kill # ffmpeg-grab -s qxga ffmpeg-grab -s 1024x600 # sleep 10 ffmpeg-kill # (find-fline "/tmp/") # (find-fline "/tmp/out.log") # (find-mplayer "/tmp/out.mp4") http://backports.debian.org/debian-backports/pool/main/liba/libav/libav_0.8.3-1~bpo60+1.dsc http://backports.debian.org/debian-backports/pool/main/liba/libav/libav_0.8.3-1~bpo60+1.debian.tar.gz http://backports.debian.org/debian-backports/pool/main/liba/libav/libav_0.8.3.orig.tar.gz ##### # # avconv grab # 2016oct07 # ##### # «avconv-grab» (to ".avconv-grab") # (find-es "x" "screen-dimensions") # (find-sh0 "xdpyinfo | grep 'dimensions:' | awk '{print $2}'") # (find-man "1 avconv") # (find-man "1 avconv" "X11 grabbing") # (find-man "1 avconv" "qxga" "2048x1536") # (find-man "1 avconv" "xga 1024x768") # (find-es "emacs" "adjust-geometry") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) avconv -f x11grab -s 1280x800 -r 5 -i :1.0 /tmp/out.mpg avconv -f x11grab -i :1.0 /tmp/out.mpg avconv -f x11grab -s 1280x800 -i :1.0 /tmp/out.mpg avconv -f x11grab -s 1280x800 -i :1.0 -y /tmp/out.mpg avconv -f x11grab -s 1280x800 -i :1.0 -y /tmp/out.mp4 # (find-video "/tmp/out.mpg") # (find-video "/tmp/out.mp4") * (set-frame-width nil 167) * (set-frame-height nil 59) * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) avconv -f x11grab -s xga -i :1.0 -y /tmp/out.mp4 * (message "bcdefg") # (find-video "/tmp/out.mp4") ##### # # x11grab problem with erasals # 2016oct18 # ##### # «x11grab-problem-erasal» (to ".x11grab-problem-erasal") # http://angg.twu.net/eev-videos/x11grab-problem-2016oct18.mp4 # (find-fline "/home/edrx/LOGS/2016oct18.emacs") # (find-fline "/home/edrx/LOGS/2016oct18.emacs" "<wgreenhouse> edrx:") # (find-fline "/home/edrx/LOGS/2016oct18.libav") # (find-fline "/home/edrx/LOGS/2016oct18.libav" "XShmGetImage") # (find-es "x" "xserver-log") # (find-zsh "dmissing -i XShmGetImage") # (find-man "3 XShmGetImage") ##### # # recordmydesktop # 2016oct23 # ##### # «recordmydesktop» (to ".recordmydesktop") # http://unix.stackexchange.com/questions/73622/how-to-get-near-perfect-screen-recording-quality # (find-es "flash" "recordmydesktop") # (find-es "video" "recordmydesktop") # (find-man "1 recordmydesktop") (/ 768 640.0) (/ 59 1.2) * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) * (size 167 59) recordmydesktop --display :1.0 -x 0 -y 0 --width 1024 --height 768 --full-shots --fps 5 \ -o /tmp/out.ogv & file:///tmp/out.mp4.ogv * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) * (size 167 49) recordmydesktop --display :1.0 -x 0 -y 0 --width 1024 --height 640 \ --full-shots --fps 5 \ -o /tmp/out.ogv & killall recordmydesktop # file:///tmp/out.ogv hello killall recordmydesktop Hello ##### # # Reducing audio quality with avconv # 2012nov15 # ##### # «audio-quality» (to ".audio-quality") # (find-man "1 avconv") # (find-man "1 avconv" "-b:a 128k") # (find-man "1 avconv" "-codec copy") # (find-man "1 avconv" "avconv -i /tmp/a.wav -ar 22050") # (find-eev-video-links "2pt") # (find-fline "~/eev-videos/" "video2pt-") # (find-fline "~/NICOTINE/Atras_do_porto/" "menino_bonito.mp3") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) cp -v ~/NICOTINE/Atras_do_porto/menino_bonito.mp3 /tmp/a1.mp3 cd /tmp/ avconv -i a1.mp3 -b 64k a2.mp3 avconv -i a2.mp3 -b 32k a3.mp3 # (find-fline "/tmp/") # (find-TH "html5-audio") cp -v a3.mp3 ~/TH/L/html5-audio.mp3 Scp-np a3.mp3 $TWUS/html5-audio.mp3 ##### # # Extracting the audio from a video # 2017mar12 # ##### # «extract-audio» (to ".extract-audio") # (find-fline "/sda5/videos/") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) cd /sda5/videos/ avconv -i David_Bowie_-_Amsterdam-153Abqg7_3I.mp4 -codec copy \ David_Bowie_-_Amsterdam-153Abqg7_3I.mp3 ##### # # libav (from the debian sources) # 2012nov10 # ##### # «libav-deb-src» (to ".libav-deb-src") # http://backports.debian.org/debian-backports/pool/main/liba/libav/ # http://backports.debian.org/debian-backports/pool/main/liba/libav/libav_0.8.3-1~bpo60+1.dsc # http://backports.debian.org/debian-backports/pool/main/liba/libav/libav_0.8.3-1~bpo60+1.diff.gz # http://backports.debian.org/debian-backports/pool/main/liba/libav/libav_0.8.3.orig.tar.gz #* rm -Rv ~/usrc/libav/ mkdir ~/usrc/libav/ cd $S/http/backports.debian.org/debian-backports/pool/main/liba/libav/ cp -v libav_0.8.3* ~/usrc/libav/ cd ~/usrc/libav/ dpkg-source -sn -x libav_0.8.3-1~bpo60+1.dsc cd ~/usrc/libav/libav-0.8.3/ dpkg-buildpackage -us -uc -b -rfakeroot |& tee odb #* # (find-fline "~/usrc/libav/") * (eepitch-shell) cd ~/usrc/libav/ sudo dpkg -i *.deb #* # (code-c-d "libav" "~/usrc/libav/libav-0.8.3/") # (find-libavfile "") # (find-libavfile "Changelog") # (find-libavfile "Changelog" "version 0.8_beta1:") # (find-libavfile "doc/") # (find-libavgrep "grep -nH -e grab doc/*") ##### # # Key frames # 2012nov17 # ##### # «key-frames» (to ".key-frames") # http://en.wikipedia.org/wiki/Key_frame # http://en.wikipedia.org/wiki/Video_compression_picture_types # http://libav.org/avconv.html # http://libav.org/css/bootstrap.css # http://libav.org/css/libav.css # http://libav.org/css/alert.css # (find-man "1 avconv" "-g gop_size" "group of pictures") # (find-man "1 avconv" "-c:a copy") # (find-zsh "dmissing avconv.html") # (find-fline "~/LOGS/2013jan10.libav") # (defun eejump-9 () (find-2b '(find-es "ffmpeg") '(find-ebuffer "#libav@irc.freenode.net"))) # (find-angg "eev-videos/" "video4-eepitch.mp4") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) cp -fv ~/eev-videos/video4-eepitch.mp4 /tmp/a.mp4 cd /tmp/ nice avconv -i /tmp/a.mp4 -g 5 -c:a copy -y /tmp/a-g05.mp4 |& tee a-g05.log nice avconv -i /tmp/a.mp4 -g 10 -c:a copy -y /tmp/a-g10.mp4 |& tee a-g10.log laf /tmp/*.mp4 # (find-fline "/tmp/") # (find-video "/tmp/b.mp4") ##### # # dvd subtitles # 2013feb14 # ##### # «dvd-subtitles» (to ".dvd-subtitles") # http://ffmpeg-users.933282.n4.nabble.com/extract-subtiles-td939612.html # (find-man "1 ffmpeg") # (find-man "1 avconv") # (find-man "1 avconv" "-sbsf mov2textsub") avconv -i file.mov -an -vn -sbsf mov2textsub -c:s copy -f rawvideo sub.txt # (find-man "1 avconv" "BITSTREAM FILTERS\n") ##### # # Converting audio+photos to video # 2013jun30 # ##### # «audio-plus-photos-to-video» (to ".audio-plus-photos-to-video") # (find-freenode "#libav") # (find-fline "~/LOGS/2013jun30.libav") # (find-fline "~/LOGS/2013jun30.libav" "image2pipe") # http://stackoverflow.com/questions/16315192/avconv-make-a-video-from-a-subset-on-images # (find-man "1 avconv" "image2pipe") # Where's avconv in wheezy? =( # (find-zsh "installeddebs | sort | grep libav") # (find-zsh "availabledebs | sort | grep libav") # (find-status "libav-tools") # (find-vldifile "libav-tools.list") # (find-udfile "libav-tools/") ##### # # Creating mono .mp3 files # 2013aug11 # ##### # «mono» (to ".mono") # (find-man "1 ffmpeg" "AUDIO ENCODERS") # (find-man "1 ffmpeg" "-ac channels") ##### # # Extracting a part of an mp3 file # 2013aug12 # ##### # «extract-part-of-mp3» (to ".extract-part-of-mp3") # (find-es "mplayer" "extract-part-of-mp3") # (find-man "1 ffmpeg" "-ss position") # (find-man "1 ffmpeg" "-t duration") # (find-man "1 avconv") # (find-sh "avconv -formats") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) cp -v ~/TH/L/html5-audio.mp3 /tmp/in.mp3 cp -v ~/audios/2013ago01-ict.3ga /tmp/in.3ga cp -v ~/audios/2013ago01-ict.mp3 /tmp/in2.mp3 cd /tmp/ avconv -i in.mp3 -ss 0:30 -t 0:35 -y out.mp3 avconv -y -i in.mp3 out.mp3 avconv -y -i in.mp3 -acodec copy out.mp3 avconv -y -i in.mp3 -acodec copy out.mp3 avconv -y -i in.mp3 -acodec copy -ss 30 out.mp3 avconv -y -i in.mp3 -acodec copy -ss 30 -t 5 out.mp3 avconv -y -i in.3ga -acodec copy -ss 1:24:57 -t 7:10 out.3ga avconv -y -i in.3ga -ss 1:24:57 -t 430 out.mp3 avconv -y -i in.3ga -ss 1:24:57 -t 430 -b:a 128k -ac 1 out2.mp3 # «raising-volume» (to ".raising-volume") avconv -y -i out2.mp3 -b:a 128k -t 20 -ac 1 -filter volume=volume=10dB out3.mp3 avconv -y -i out2.mp3 -b:a 128k -t 20 -ac 1 -vol 80dB out3.mp3 avconv -y -i out2.mp3 -b:a 128k -t 20 -ac 1 -vol 512 out3.mp3 cd /tmp/ avconv -y -i out2.mp3 -b:a 128k -t 20 -ac 1 -vol 1024 out3.mp3 avconv -y -i out2.mp3 -b:a 128k -ac 1 -vol 1024 out3.mp3 # (find-audio "/tmp/out3.mp3") # (find-audio "/tmp/out2.mp3") # (find-audio "/tmp/out3.mp3") # (find-fline "~/LOGS/2013aug12.libav") <elenril> anyway, https://libav.org/avconv.html#volume <edrx> trying... <edrx> "-filter volume=volume=10dB" ? cp -v out2.mp3 out3.mp3 ##### # # extract-frame # 2023sep11 # ##### # «extract-frame» (to ".extract-frame") # (find-es "imagemagick" "convert") # https://www.baeldung.com/linux/ffmpeg-extract-video-frames # https://superuser.com/questions/1009969/how-to-extract-a-frame-out-of-a-video-using-ffmpeg # (find-man "1 ffmpeg" "-ss position") # (find-man "1 ffmpeg" "-vframes") # (find-man "1 ffmpeg" "-frames[:stream_specifier]") # (find-SUBSfile "mathologer-calculus-easy.lua" "cp -v") # (find-calceasyvideo "13:00") # (find-calceasyvideo "16:15") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) cd /tmp/ STEM=mathologer-calculus-easy EXT=webm ECHO=echo videofile () { echo ${STEM}.${EXT} } jpgfile () { echo ${STEM}_${1}.jpg } pdffile () { echo ${STEM}_${1}.pdf } makejpg () { $ECHO ffmpeg -loglevel error -y -ss $1 -i $(videofile) -frames:v 1 $(jpgfile $1) } makepdf () { $ECHO convert -scale 50% $(jpgfile $1) $(pdffile $1) } makepdf () { $ECHO convert $(jpgfile $1) $(pdffile $1) } copypdf () { $ECHO cp $(pdffile $1) ~/LATEX/2023-2-C2/ } cd /tmp/ ECHO=echo ECHO= for i in 13:00 16:16; do makejpg $i makepdf $i copypdf $i echo "(find-latexscan-links \"C2\" \"${STEM}_${i}\")" done laf ${STEM}* ##### # # Notes on raising the volume (2020) # 2020nov27 # ##### # «volume-2020» (to ".volume-2020") # https://trac.ffmpeg.org/wiki/AudioVolume # https://bytefreaks.net/uncategorized/increase-volume-in-video-using-ffmpeg # https://blog.programster.org/change-audio-level-in-video # (code-eevvideo "eev2020p1" "eev2020part1") # (find-eev2020p1video "0:00") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) cp -iv $S/http/angg.twu.net/eev-videos/eev2020part1.mp4 /tmp/video0.mp4 cd /tmp/ ffmpeg \ -i video0.mp4 \ -vcodec copy \ -af "volume=30dB" \ video1.mp4 # (find-video "/tmp/video0.mp4") # (find-video "/tmp/video1.mp4") ##### # # libav from git # 2013aug12 # ##### # «libav-git» (to ".libav-git") # http://www.libav.org/download.html # git://git.libav.org/libav.git * (eepitch-shell2) * (eepitch-kill) * (eepitch-shell2) # (find-fline "~/bigsrc/") cd ~/bigsrc/ git clone --depth 1 git://git.libav.org/libav.git cd ~/bigsrc/libav/ ./configure |& tee oc make |& tee om (code-c-d "libav" "~/bigsrc/libav/") ;; (find-libavfile "") # (find-fline "~/bigsrc/libav/") ##### # # Cover picture # 2014may13 # ##### # «cover-picture» (to ".cover-picture") # http://stackoverflow.com/questions/14423647/ffmpeg-remove-cover-picture-from-mp3-convert-to-ogg-without-cover # (find-man "1 ffmpeg") ##### # # rotate # 2015jan30 # ##### # «rotate» (to ".rotate") # http://stackoverflow.com/questions/3937387/rotating-videos-with-ffmpeg # (find-man "1 ffmpeg") # (find-man "1 ffmpeg" "transpose") # (find-man "1 ffmpeg" "hflip") # (find-man "1 ffmpeg" "vflip") # (find-man "1 ffmpeg" " vflip") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) cd /tmp/ rm -v output.mp4 # ffmpeg -i input.mp4 -c copy -metadata:s:v:0 rotate=90 output.mp4 # ffmpeg -vfilters "rotate=90" -i input.mp4 output.mp4 # ffmpeg -vf "rotate=90" -i input.mp4 output.mp4 # ffmpeg -i input.mp4 -vf "transpose=1" output.mp4 # rm -v output.mp4 ffmpeg -i input.mp4 -vf "transpose=1" output.mp4; # 90 degrees clockwise ffmpeg -i input.mp4 -vf "transpose=2" output.mp4; # 90 degrees counterclockwise ffmpeg -i input.mp4 -vf "hflip,vflip" output.mp4; # 180 degrees # (find-video "/tmp/input.mp4") # (find-video "/tmp/output.mp4") # (find-sh "ffmpeg -filters") # (find-man "ffmpeg") # (find-man "ffmpeg" " transpose") # (find-video "/tmp/output.mp4") # (find-man "mplayer2") ##### # # rotate a video with avconv # 2016sep07 # ##### # «rotate-avconv» (to ".rotate-avconv") # http://stackoverflow.com/questions/25031557/rotate-mp4-videos-without-re-encoding # (find-sh "ls /tmp/*.mp4") # (to "avconv-wheezy") # (to "avconv") # (find-man "1 avconv") # (find-man "1 avprobe") # https://libav.org/avconv.html # https://libav.org/avconv.html#transpose # https://wiki.libav.org/Encoding/aac * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) cd /tmp/ STEM=20160907_casa_e_lana avprobe -v quiet $STEM.mp4 -show_streams avprobe -v quiet $STEM.mp4 -show_streams | grep rot avconv -i $STEM.mp4 -c copy -metadata:s:v:0 rotate=0 ${STEM}_0.mp4 avconv -i $STEM.mp4 -c copy -metadata:s:v:0 rotate=90 ${STEM}_90.mp4 avconv -i $STEM.mp4 -vf "transpose=clock" ${STEM}_90.mp4 for i in $STEM*.mp4 do echo $i: avprobe -v quiet $STEM.mp4 -show_streams | grep rot done # ^ Not working... how can I play a video in a different orientation? # (find-man "1 mplayer2") # (find-man "1 mplayer2" "rotate[=<0-7>]") # (defvar ee-mplayer-options '("-fs" "-osdlevel" "2" "-zoom")) (let ((ee-mplayer-options `("-vf" "rotate=1" ,@ee-mplayer-options))) ee-mplayer-options) (let ((ee-mplayer-options `("-vf" "rotate=1" ,@ee-mplayer-options))) (find-video "/tmp/20160907_casa_e_lana.mp4")) cd /tmp/ mplayer /tmp/20160907_casa_e_lana.mp4 mplayer -vf rotate=1 /tmp/20160907_casa_e_lana.mp4 ##### # # Record the video about "Logic for Children" in Vichy # 2018mai18 # ##### # «vichy-video» (to ".vichy-video") # (find-man "1 avconv") # (find-man "1 avconv" "Video Options") # (find-man "1 avconv" "Video Options" " -s") # (find-man "1 avconv" "# Grab at position 10,20") # (vivp) # (viv) * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) rm -v /tmp/out.mpg rm -v /tmp/out.mp4 # { sleep 1; avconv -f x11grab -s 1280x800 -i :1.0 /tmp/out.mp4; } & { sleep 1; avconv -f x11grab -s 1000x800 -i :1.0+140,0 /tmp/out.mp4; } & xpdf -fullscreen ~/LATEX/2018vichy-video.pdf; killall avconv laf /tmp/out.mp4 # (find-fline "/tmp/" "out.mp4") # (find-video "/tmp/out.mp4") * (find-video "/tmp/out.mp4") ##### # # Converting webm to mp4 # 2019sep01 # ##### # «webm-to-mp4» (to ".webm-to-mp4") # https://blog.addpipe.com/converting-webm-to-mp4-with-ffmpeg/ # https://askubuntu.com/questions/323944/convert-webm-to-other-formats # https://linuxconfig.org/master-your-videos-from-the-cli-with-ffmpeg # (find-fline "~/eev-videos/") # (find-fline "~/eev-videos/" "three-keys-1-pt-video.webm") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) # (find-fline "/tmp/webmtomp4/") rm -Rv /tmp/webmtomp4/ mkdir /tmp/webmtomp4/ cd /tmp/webmtomp4/ cp -iv ~/eev-videos/three-keys-1-pt-video.webm ./video.webm time ffmpeg -i video.webm video.mp4 ##### # # Donald Feury - Concatenate Videos Together Using FFMPEG! # 2020nov22 # ##### # «feury-concat» (to ".feury-concat") # https://dev.to/dak425/concatenate-videos-together-using-ffmpeg-2gg1 # https://www.youtube.com/watch?v=qjumeCB1iEg # (find-youtubedl-links "/sda5/videos/" "Automated Video Editing - How to Combine Videos Together with ffmpeg" "qjumeCB1iEg" ".mkv" "feuryconcat") # (code-video "feuryconcatvideo" "/sda5/videos/Automated Video Editing - How to Combine Videos Together with ffmpeg-qjumeCB1iEg.mkv") # (find-feuryconcatvideo) # (find-feuryconcatvideo "0:00") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) # (find-fline "$S/http/angg.twu.net/eev-videos/") cd /tmp/ rm -fv video1.mp4 video2.mp4 vlist.txt out.mp4 cd $S/http/angg.twu.net/eev-videos/ cp -v 2020_C2_2020nov09.mp4 /tmp/video1.mp4 cp -v 2020_int_pots_sen_cos.mp4 /tmp/video2.mp4 cat > /tmp/vlist.txt <<'%%%' file 'video1.mp4' file 'video2.mp4' %%% cd /tmp/ ffmpeg -f concat -i vlist.txt -c copy out.mp4 # (find-video "/tmp/out.mp4") # (find-video "/tmp/out.mp4" "3:58") ##### # # concat-kla # 2022dec03 # ##### # «concat-kla» (to ".concat-kla") # (find-fline "~/KLA-VIDEOS/") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) cat > /tmp/vlist.txt <<'%%%' file 'ssr-1.mp4' file 'ssr-2.mp4' file 'ssr-3.mp4' file 'ssr-4.mp4' file 'ssr-5.mp4' %%% cd /tmp/ ffmpeg -f concat -i vlist.txt -c copy out.mp4 cd /tmp/ ssr-1.mp4 ##### # # feury-cut # 2020dec05 # ##### # «feury-cut» (to ".feury-cut") # https://dev.to/dak425/cut-up-video-and-audio-with-just-ffmpeg-4l4m # https://www.youtube.com/watch?v=Q2Wc-cDFixs # (find-youtubedl-links "/sda5/videos/" nil "Q2Wc-cDFixs" nil "feurycut") # (code-video "feurycutvideo" "/sda5/videos/How_cut_videos_into_clips_using_ffmpeg-Q2Wc-cDFixs.mp4") # (find-feurycutvideo) # (find-feurycutvideo "0:00") # (find-feurycutvideo "1:10") # (find-feurycutvideo "3:40" "I want the middle portion") # (find-feurycutvideo "4:14" "instead of a duration a stop timestamp") # (find-feurycutvideo "5:05" "-to") # (find-feurycutvideo "6:15" "audio files") # (find-feurycutvideo "8:45" "add pieces of video and audio files") # (find-feurycutvideo "9:55" "start reading the file at") # (find-feurycutvideo "10:30" "ffmpeg -ss ___ -i ___.mp4") # (find-feurycutvideo "11:22" "a bit confusing if") # (find-feurycutvideo "11:50" "ffmpeg -ss ___ -i ___.mp4 -t ___ ") # (find-feurycutvideo "12:00" "ffmpeg -ss ___ -i ___.mp4 -to ___ ") # (find-man "1 ffmpeg") # (find-man "1 ffmpeg" "-ss position") # (find-man "1 ffmpeg" "-t duration") # (find-man "1 ffmpeg" "-to position") ffmpeg -i input.mp4 -t 8 -c copy # (find-1stclassvideo-links "2021workshop3") # (find-angg ".emacs.videos" "2021workshop3") # (find-2021workshop3video "4:55" "A demo. In this demo") # Not working well: * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) rm -Rv /tmp/ffmpeg/ mkdir /tmp/ffmpeg/ cd /tmp/ffmpeg/ cp -v $S/http/angg.twu.net/eev-videos/2021-workshop-3.mp4 in.mp4 ffmpeg -ss 4:55 -i in.mp4 -c copy out.mp4 # (find-video "/tmp/ffmpeg/out.mp4") ##### # # Cutting a part of a video (mnu4) # 2022jul23 # ##### # «feury-cut-mnu4» (to ".feury-cut-mnu4") # (find-es "ead" "mat-na-univ-4-eu") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) INPUT=/home/videos/Math/Matematica_na_Universidade_-_Reuniao_4_-_11-6-2021-kvfv6fnNTng.mkv cp -v $INPUT /tmp/ffmpeg-input.mkv * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) rm -fv /tmp/ffmpeg-output.mkv ffmpeg -ss 35:00 -to 1:25:35 -i /tmp/ffmpeg-input.mkv -c copy /tmp/ffmpeg-output.mkv # (find-video "/tmp/ffmpeg-output.mkv") # (find-mnu4video "35:00" "Eduardo Ochs") # (find-mnu4video "1:25:36" "Márcio Adames") Minha apresentação na reunião 4 do "Matemática na Universidade", em 11/jun/2021. A versão integral da reunião está em: http://www.youtube.com/watch?v=kvfv6fnNTng O trecho deste vídeo começa no 35:00 na versão integral. Mais informações aqui: http://angg.twu.net/2021aulas-por-telegram.html Matemática na Universidade - Reunião 4 - 11/jun/2021 - Eduardo Ochs ##### # # feury-replace-audio # 2020dec05 # ##### # «feury-replace-audio» (to ".feury-replace-audio") # https://dev.to/dak425/how-to-replace-the-audio-in-a-video-with-the-audio-from-another-video-with-ffmpeg-2ob8 # https://www.youtube.com/watch?v=fXdaNnAe_MA # (find-youtubedl-links "/sda5/videos/" "Automated_Video_Editing_-_How_to_replace_the_audio_in_a_video_with_ffmpeg_feurious" "fXdaNnAe_MA" ".mkv" "feuryreplace") # (code-video "feuryreplacevideo" "/sda5/videos/Automated_Video_Editing_-_How_to_replace_the_audio_in_a_video_with_ffmpeg_feurious-fXdaNnAe_MA.mkv") # (find-feuryreplacevideo "0:00") # (find-feuryreplacevideo "2:25" "overcomplicated way") # (find-feuryreplacevideo "3:51" "how do we merge them") # (find-feuryreplacevideo "4:05" "merged-separate.mkv") # (find-man "1 ffmpeg") # (find-man "1 ffmpeg" "-an (output)") ##### # # Remaking the "ZOOM0025" video of my EmacsConf2019 talk with ffmpeg # 2020dec05 # ##### # «emacsconf2019-25» (to ".emacsconf2019-25") # (find-fline "/sda5/home/edrx/eev-videos/emacsconf/") # (find-fline "/sda5/home/edrx/eev-videos/emacsconf/ZOOM0025.txt") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) * (eepitch-vterm) * (eepitch-kill) * (eepitch-vterm) rm -Rv /tmp/emacsconf2019/ mkdir /tmp/emacsconf2019/ cd /sda5/home/edrx/eev-videos/emacsconf/ laf --full-time laf --full-time ZOOM0025* cp -iv ZOOM0025_audio.wav /tmp/emacsconf2019/ cp -iv ZOOM0025_video.mp4 /tmp/emacsconf2019/ # to 160Kbps mp3 AUDIOSKIP # AUDIO0 ----------------> AUDIO1 -----------> AUDIO2 # \ # >--> BOTH # to mp4 (nop) VIDEOSKIP / # VIDEO0 ----------------> AUDIO1 -----------> VIDEO2 # # cd /tmp/emacsconf2019/ laf AUDIO0=/tmp/emacsconf2019/ZOOM0025_audio.wav AUDIO1=/tmp/emacsconf2019/ZOOM0025_audio1.mp3 AUDIO2=/tmp/emacsconf2019/ZOOM0025_audio2.mp3 VIDEO1=/tmp/emacsconf2019/ZOOM0025_video.mp4 VIDEO2=/tmp/emacsconf2019/ZOOM0025_video2.mp4 JOINED=/tmp/emacsconf2019/ZOOM0025_joined.mp4 makeaudio1 () { ffmpeg -i $AUDIO0 -b:a 160k -y $AUDIO1 } makeaudio2 () { ffmpeg -ss $AUDIOSKIP -i $AUDIO1 -c copy -t $LEN -y $AUDIO2 } makevideo2 () { ffmpeg -ss $VIDEOSKIP -i $VIDEO1 -c copy -t $LEN -y $VIDEO2 } makejoined () { ffmpeg -i $AUDIO2 -i $VIDEO2 -c copy -y $JOINED } makeaudio1 AUDIOSKIP=0:07.30 VIDEOSKIP=0:09.60 LEN=30 LEN=13:10 makeaudio2 makevideo2 makejoined laf # (find-audio "/tmp/emacsconf2019/ZOOM0025_audio2.mp3") # (find-video "/tmp/emacsconf2019/ZOOM0025_video2.mp4") # (find-video "/tmp/emacsconf2019/ZOOM0025_joined.mp4") # (find-video "/tmp/emacsconf2019/ZOOM0025_joined.mp4" "0:13") # (find-video "/tmp/emacsconf2019/ZOOM0025_joined.mp4" "13:00") ##### # # Remaking the "ZOOM0035" video of my EmacsConf2019 talk with ffmpeg # 2020dec05 # ##### # «emacsconf2019-35» (to ".emacsconf2019-35") # (find-fline "/sda5/home/edrx/eev-videos/emacsconf/") # (find-fline "/sda5/home/edrx/eev-videos/emacsconf/ZOOM0025.txt") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) * (eepitch-vterm) * (eepitch-kill) * (eepitch-vterm) rm -Rv /tmp/emacsconf2019/ mkdir /tmp/emacsconf2019/ cd /sda5/home/edrx/eev-videos/emacsconf/ laf --full-time laf --full-time ZOOM0035* cp -iv ZOOM0035_audio.wav /tmp/emacsconf2019/ cp -iv ZOOM0035_video.mp4 /tmp/emacsconf2019/ # to 160Kbps mp3 AUDIOSKIP # AUDIO0 ----------------> AUDIO1 -----------> AUDIO2 # \ # >--> BOTH # to mp4 (nop) VIDEOSKIP / # VIDEO0 ----------------> AUDIO1 -----------> VIDEO2 # # cd /tmp/emacsconf2019/ laf AUDIO0=/tmp/emacsconf2019/ZOOM0035_audio.wav AUDIO1=/tmp/emacsconf2019/ZOOM0035_audio1.mp3 AUDIO2=/tmp/emacsconf2019/ZOOM0035_audio2.mp3 VIDEO1=/tmp/emacsconf2019/ZOOM0035_video.mp4 VIDEO2=/tmp/emacsconf2019/ZOOM0035_video2.mp4 JOINED=/tmp/emacsconf2019/ZOOM0035_joined.mp4 makeaudio1 () { ffmpeg -i $AUDIO0 -b:a 160k -y $AUDIO1 } makeaudio2 () { ffmpeg -ss $AUDIOSKIP -i $AUDIO1 -c copy -t $LEN -y $AUDIO2 } makevideo2 () { ffmpeg -ss $VIDEOSKIP -i $VIDEO1 -c copy -t $LEN -y $VIDEO2 } makejoined () { ffmpeg -i $AUDIO2 -i $VIDEO2 -c copy -y $JOINED } makeaudio1 AUDIOSKIP=0:11.50 VIDEOSKIP=0:13.50 LEN=6:04 makeaudio2 makevideo2 makejoined laf # (find-audio "/tmp/emacsconf2019/ZOOM0035_audio1.mp3" "1:01" "manpage") # (find-audio "/tmp/emacsconf2019/ZOOM0035_audio1.mp3" "1:03" "(click)") # (find-audio "/tmp/emacsconf2019/ZOOM0035_audio2.mp3" "0:50" "manpage") # (find-video "/tmp/emacsconf2019/ZOOM0035_video.mp4" "1:05" "manpage") # (find-video "/tmp/emacsconf2019/ZOOM0035_video2.mp4") # (find-video "/tmp/emacsconf2019/ZOOM0035_joined.mp4") # (find-video "/tmp/emacsconf2019/ZOOM0035_joined.mp4" "0:50" "manpage") # (find-video "/tmp/emacsconf2019/ZOOM0035_joined.mp4" "6:00") ##### # # Remaking the "ZOOM0035end" video of my EmacsConf2019 talk with ffmpeg # 2020dec05 # ##### # «emacsconf2019-35end» (to ".emacsconf2019-35end") # (find-fline "/sda5/home/edrx/eev-videos/emacsconf/") # (find-fline "/sda5/home/edrx/eev-videos/emacsconf/ZOOM0025.txt") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) * (eepitch-vterm) * (eepitch-kill) * (eepitch-vterm) rm -Rv /tmp/emacsconf2019/ mkdir /tmp/emacsconf2019/ cd /sda5/home/edrx/eev-videos/emacsconf/ laf --full-time laf --full-time ZOOM0035end* # cp -iv ZOOM0035end_audio.wav /tmp/emacsconf2019/ cp -iv ZOOM0035end_video.mp4 /tmp/emacsconf2019/ # to 160Kbps mp3 AUDIOSKIP # AUDIO0 ----------------> AUDIO1 -----------> AUDIO2 # \ # >--> BOTH # to mp4 (nop) VIDEOSKIP / # VIDEO0 ----------------> AUDIO1 -----------> VIDEO2 # # cd /tmp/emacsconf2019/ laf #AUDIO0=/tmp/emacsconf2019/ZOOM0035end_audio.wav #AUDIO1=/tmp/emacsconf2019/ZOOM0035end_audio1.mp3 #AUDIO2=/tmp/emacsconf2019/ZOOM0035end_audio2.mp3 VIDEO1=/tmp/emacsconf2019/ZOOM0035end_video.mp4 VIDEO2=/tmp/emacsconf2019/ZOOM0035end_video2.mp4 JOINED=/tmp/emacsconf2019/ZOOM0035end_joined.mp4 makeaudio1 () { ffmpeg -i $AUDIO0 -b:a 160k -y $AUDIO1 } makeaudio2 () { ffmpeg -ss $AUDIOSKIP -i $AUDIO1 -c copy -t $LEN -y $AUDIO2 } makevideo2 () { ffmpeg -ss $VIDEOSKIP -i $VIDEO1 -c copy -t $LEN -y $VIDEO2 } makejoined () { ffmpeg -i $AUDIO2 -i $VIDEO2 -c copy -y $JOINED } #makeaudio1 #AUDIOSKIP=0:11.50 VIDEOSKIP=0:06 LEN=0:05.50 #makeaudio2 makevideo2 #makejoined laf # (find-video "/tmp/emacsconf2019/ZOOM0035end_video.mp4") # (find-video "/tmp/emacsconf2019/ZOOM0035end_video2.mp4") cd /tmp/emacsconf2019/ cat > vlist.txt <<'%%%' file 'ZOOM0025_joined.mp4' file 'ZOOM0035_joined.mp4' file 'ZOOM0035end_video2.mp4' %%% ffmpeg -f concat -i vlist.txt -c copy -y emacsconf2019_0.mp4 ffmpeg -i emacsconf2019_0.mp4 -c copy -y emacsconf2019.mp4 cmp emacsconf2019_0.mp4 emacsconf2019.mp4 # (find-video "/tmp/emacsconf2019/emacsconf2019_0.mp4") # (find-video "/tmp/emacsconf2019/emacsconf2019.mp4") # (find-fline "/tmp/emacsconf2019/" "emacsconf2019.mp4") # (find-twusfile "eev-videos/") # (find-twupfile "eev-videos/") # (find-fline "/tmp/emacsconf2019/") cd /tmp/emacsconf2019/ Scp-np emacsconf2019.mp4 $TWUP/eev-videos/emacsconf2019.mp4 Scp-np emacsconf2019.mp4 $TWUS/eev-videos/emacsconf2019.mp4 # (find-eevvideo-links "ec2019" "emacsconf2019" "86yiRG8YJD0" "0:00") ##### # # non-monotonous-dts # 2020dec06 # ##### # «non-monotonous-dts» (to ".non-monotonous-dts") # https://video.stackexchange.com/questions/15468/non-monotonous-dts-on-concat-ffmpeg # (find-man "ffmpeg") ##### # # encode-vp9-two-pass (thanks to Amin Bandali) # 2020dec06 # ##### # «encode-vp9-two-pass» (to ".encode-vp9-two-pass") # https://emacsconf.org/2019/talks/27/ # https://trac.ffmpeg.org/wiki/Encode/VP9#twopass # # Amin: I converted them to vp9+opus webm using a two-pass approach # mentioned on https://trac.ffmpeg.org/wiki/Encode/VP9#twopass like so: * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) rm -Rv /tmp/emacsconf2019-vp9/ mkdir /tmp/emacsconf2019-vp9/ cd /tmp/emacsconf2019-vp9/ cp -iv /tmp/emacsconf2019/emacsconf2019.mp4 /tmp/emacsconf2019-vp9/input.mp4 # (find-fline "/tmp/emacsconf2019/") # (find-fline "/tmp/emacsconf2019-vp9/") # (find-sh "cat /tmp/emacsconf2019-vp9/ffmpeg2pass-0.log | tr / '\\n'") ffmpeg -i input.mp4 -c:v libvpx-vp9 -row-mt 1 -b:v 2M -pass 1 -an -f null /dev/null ffmpeg -i input.mp4 -c:v libvpx-vp9 -row-mt 1 -b:v 2M -pass 2 -c:a libopus output.webm ##### # # ffprobe # 2021jun16 # ##### # «ffprobe» (to ".ffprobe") # (find-man "1 ffprobe") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) FNAME=$S/http/angg.twu.net/eev-videos/2021-1-C2-intro.mp4 file $FNAME mediainfo $FNAME mediainfo --Full $FNAME ffprobe $FNAME ##### # # mediainfo # 2021jun16 # ##### # «mediainfo» (to ".mediainfo") # (find-status "mediainfo") # (find-vldifile "mediainfo.list") # (find-udfile "mediainfo/") # (find-man "1 mediainfo") # (find-sh "mediainfo --Help") ##### # # mkvtoolnix # 2021nov17 # ##### # «mkvtoolnix» (to ".mkvtoolnix") # (find-status "mkvtoolnix") # (find-vldifile "mkvtoolnix.list") # (find-udfile "mkvtoolnix/") # https://mkvtoolnix.download/index.html O arquivo final é mp4 ou mkv? Se gravou com OBS e gerou um mkv para depois editar pode corrigir antes da edição e renderizar novamente. Senão pode usar para um arquivo mkv: mkvmerge -o destino.mkv -y 1:100 origem.mkv ##### # # audio-to-video # 2023jul10 # ##### # «audio-to-video» (to ".audio-to-video") # https://superuser.com/questions/1041816/combine-one-image-one-audio-file-to-make-one-video-using-ffmpeg?newreg=d9fd42d1386d4487a128c62307a64a67 # https://www.bannerbear.com/blog/how-to-convert-audio-to-video-for-youtube-upload-using-ffmpeg/ # https://github.com/hniksic/img2video * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) cd /tmp/ ffmpeg -r 1 -loop 1 -i a.jpg -i a.mp3 -acodec copy -r 1 -shortest -vf scale=1280:720 b.mp4 ##### # # speed-up # 2021dec03 # ##### # «speed-up» (to ".speed-up") # https://trac.ffmpeg.org/wiki/How%20to%20speed%20up%20/%20slow%20down%20a%20video # The speed of a video stream can be changed by changing the # presentation timestamp (PTS) of each video frame. This can be done # via two methods: using the setpts video filter (which requires # re-encoding) or by erasing the timestamps by exporting the video to # a raw bitstream format and muxing to a container while creating new # timestamps. # # Note that in the following examples, the audio stream is not # changed, so it should ideally be disabled with -an. # # raw bitstream method # -------------------- # This method is lossless and apart from changing the timestamps, # copies the video stream as-is. Use this if you require no other # changes to your input video. First, copy the video to a raw bitstream format. # For H.264: ffmpeg -i input.mp4 -map 0:v -c:v copy -bsf:v h264_mp4toannexb raw.h264 # For H.265: ffmpeg -i input.mp4 -map 0:v -c:v copy -bsf:v hevc_mp4toannexb raw.h265 # Then generate new timestamps while muxing to a container: ffmpeg -fflags +genpts -r 30 -i raw.h264 -c:v copy output.mp4 # Change the value of -r to the desired playback frame rate. # setpts filter # # To double the speed of the video with the setpts filter, you can # use: ffmpeg -i input.mkv -filter:v "setpts=0.5*PTS" output.mkv # The filter works by changing the presentation timestamp (PTS) of # each video frame. For example, if there are two succesive frames # shown at timestamps 1 and 2, and you want to speed up the video, # those timestamps need to become 0.5 and 1, respectively. Thus, we # have to multiply them by 0.5. # # Note that this method will drop frames to achieve the desired speed. # You can avoid dropped frames by specifying a higher output frame # rate than the input. For example, to go from an input of 4 FPS to # one that is sped up to 4x that (16 FPS): ffmpeg -i input.mkv -r 16 -filter:v "setpts=0.25*PTS" output.mkv # To slow down your video, you have to use a multiplier greater than 1: ffmpeg -i input.mkv -filter:v "setpts=2.0*PTS" output.mkv ##### # # akater-tty-screenshot # 2023jul16 # ##### # «akater-tty-screenshot» (to ".akater-tty-screenshot") # (find-telegachat "@emacs_telega#40524") # (find-telegachat "@emacs_telega#40524" "akater-tty-screenshot") (defun akater-tty-screenshot () (interactive) (let ((default-directory "~")) (shell-command "ffmpeg -f fbdev -framerate 1 -i /dev/fb0 -frames:v 1 -q:v 1 screenshot.jpg"))) ##### # # waveform # 2023aug13 # ##### # «waveform» (to ".waveform") # (find-es "subtitles" "waveform-test-2") ##### # # ffmpeg-buddy # 2023sep06 # ##### # «ffmpeg-buddy» (to ".ffmpeg-buddy") # https://news.ycombinator.com/item?id=31557809 Ffmpeg Buddy (evanhahn.github.io) # https://evanhahn.github.io/ffmpeg-buddy/ # https://github.com/EvanHahn/ffmpeg-buddy ##### # # video-duration # 2023sep25 # ##### # «video-duration» (to ".video-duration") # (find-angg ".zshrc" "video-duration") # https://superuser.com/questions/650291/how-to-get-video-duration-in-seconds * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) cd /tmp/ ffprobe \ -v error -select_streams v:0 -show_entries stream=duration -of default=noprint_wrappers=1:nokey=1 \ VID-20230923-WA0167.mp4 ##### # # video-thumbnail # 2023sep25 # ##### # «video-thumbnail» (to ".video-thumbnail") # https://stackoverflow.com/questions/27145238/create-thumbnail-from-video-using-ffmpeg # https://networking.ringofsaturn.com/Unix/extractthumbnail.php ##### # # scale # 2024mar21 # ##### # «scale» (to ".scale") # (find-man "1 ffmpeg-scaler") # (find-man "1 ffmpeg") # (find-man "1 ffmpeg" "scale") # (find-man "1 ffmpeg" "bufsize") # (find-man "1 ffmpeg" "-b:v 64k -bufsize 64k") # https://trac.ffmpeg.org/wiki/Scaling # (find-fline "$S/http/anggtwu.net/eev-videos/" "emacsconf2021.mp4") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) cp -v $S/http/anggtwu.net/eev-videos/emacsconf2021.mp4 /tmp/input.mp4 cd /tmp/ ffprobe input.mp4 ffmpeg -i input.mp4 -vf scale=320:200 output.mp4 ffmpeg -i input.mp4 -sws_flags fast_bilinear -vf scale=320:200 output.mp4 laf input.mp4 output.mp4 ffmpeg -i input.mp4 -vcodec libx265 -crf 28 fps-fps=30 -vf scale=320:200 output.mp4 ffmpeg -i input.mp4 -vcodec libx265 -crf 28 -vf scale=320:200 output.mp4 ffmpeg -i input.mp4 -b:v 64k -bufsize 64k -vf scale=320:200 output.mp4 ffmpeg -i input.mp4 -b:v 32k -bufsize 32k -vf scale=320:200 output.mp4 ffmpeg -i input.mp4 -b:v 16k -bufsize 16k -vf scale=320:200 output.mp4 ffmpeg -i input.jpg -vf scale=320:-1 output_320.png ffmpeg -i input.jpg -sws_flags fast_bilinear -vf scale=320:-1 output_320.png # (find-fline "/tmp/") ##### # # video-to-audio # 2024apr16 # ##### # «video-to-audio» (to ".video-to-audio") # https://stackoverflow.com/questions/9913032/how-can-i-extract-audio-from-video-with-ffmpeg/36324719#36324719 # (find-extra-file-links "/sda1/home/music/panda/DAVID_BOWIE/criminal_world.mp3" "{c}") # (find-audio "/sda1/home/music/panda/DAVID_BOWIE/criminal_world.mp3") # (find-youtubedl-links "/tmp/" "{title}" "oUbLegcKgIc" "{ext-}" "{stem}") * (sh-mode) * (eepitch-shell2) * (eepitch-kill) * (eepitch-shell2) # http://www.youtube.com/watch?v=oUbLegcKgIc # http://www.youtube.com/watch?v=oUbLegcKgIc#t=0m00s # http://www.youtube.com/watch?v=oUbLegcKgIc#t=0h00m00s cd /tmp/ youtube-dl -t -f 18 --restrict-filenames 'http://www.youtube.com/watch?v=oUbLegcKgIc' * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) cd /tmp/ ffmpeg -i Criminal_World_2018_Remaster-oUbLegcKgIc.mp4 \ -q:a 0 -map a \ "David Bowie - Criminal World.mp3" ;; (find-audio "/tmp/David Bowie - Criminal World.mp3") * (eepitch-shell) * (eepitch-kill) * (eepitch-shell) # (find-sh "cd /tmp/; ls *.mp4") INPUTS=( c2luc1.mp4 c2luc2.mp4 ) OUTFILE=2022jul10-apresentacao-C2.mp4 cd /tmp/ for i in $INPUTS; do echo "file '$i'"; done for i in $INPUTS; do echo "file '$i'"; done > /tmp/vlist.txt ffmpeg -f concat -i vlist.txt -c copy $OUTFILE 2022jul10-apresentacao-C2.mp4 # (find-video "/tmp/c2luc-all.mp4") # (find-video "/tmp/out.mp4" "3:58") # (find-ssr-links "2022c2apr1" "2022jul10-apresentacao-C2" "{hash}" "{time}") https://trac.ffmpeg.org/wiki/Encode/MP3 https://trac.ffmpeg.org/wiki/Capture/Desktop https://leixiaohua1020.github.io/#ffmpeg-development-examples https://trac.ffmpeg.org/wiki/ExtractSubtitles https://trac.ffmpeg.org/wiki/FFprobeTips # (find-man "mpv") # (find-man "mpv" ". Step forward") # (find-man "ffmpeg") # (find-man "ffmpeg" "-ar") # (find-man "ffmpeg" "-b:a 128k") https://unix.stackexchange.com/questions/113695/gif-screencasting-the-unix-way http://blog.pkh.me/p/13-the-ffmpeg-libav-situation.html # (find-fline "/tmp/" "in.mp3") (ee-to-seconds "7:10") # (find-status "mp3gain") # (find-vldifile "mp3gain.list") # (find-udfile "mp3gain/") # (find-udfile "mp3gain/README.method") # (find-status "normalize-audio") # (find-vldifile "normalize-audio.list") # (find-udfile "normalize-audio/") # (find-udfile "normalize-audio/changelog.gz") # (find-udfile "normalize-audio/README.gz") # (find-udfile "normalize-audio/TODO") # (find-udfile "normalize-audio/changelog.Debian.gz") # (find-udfile "normalize-audio/copyright") # (find-udfile "normalize-audio/README.Debian") # (find-man "1 normalize-mp3") # (find-man "1 normalize-audio") # (find-fline "/usr/bin/normalize-ogg") # (find-man "1 normalize-ogg") normalize-audio # (find-udfile "mp3gain/changelog.Debian.gz") # (find-udfile "mp3gain/copyright") # (find-udfile "mp3gain/README.Debian") # (find-man "1 mp3gain") normalize # (find-fline "~/audios/") cd ~/audios/ avconv -i 2013ago01-ict.3ga 2013ago01-ict.mp3 https://blog.scottlogic.com/2020/11/23/ffmpeg-webassembly.html https://canvatechblog.com/a-journey-through-color-space-with-ffmpeg-3a129bfd9b05 *** https://github.com/MaartenBaert/ssr#ffmpeg-vs-libav-confusion https://news.ycombinator.com/item?id=33383023 Show HN: FFmpeg Command Visualizer and Editor (ffmpeg.guide) https://ffmpeg.guide/ https://news.ycombinator.com/item?id=33771445 Guide to FFmpeg (img.ly) *** https://www.paulox.net/2023/05/03/quickly_resize-a-video-with-ffmpeg-for-mastodon/ https://news.ycombinator.com/item?id=37199479 VidCutter: A program for lossless video cutting (github.com/ozmartian) - ffmpeg https://news.ycombinator.com/item?id=34965535 FFmpeg 6.0 (ffmpeg.org) https://news.ycombinator.com/item?id=34555465 A History of the FFmpeg Project (multimedia.cx) https://xenodium.com/emacs-ffmpeg-and-macos-alias-commands/ https://news.ycombinator.com/item?id=31557809 Ffmpeg Buddy (evanhahn.github.io) https://superuser.com/questions/624563/how-to-resize-a-video-to-make-it-smaller-with-ffmpeg https://news.ycombinator.com/item?id=39938703 FFmpeg 7.0 (ffmpeg.org) https://epiccoleman.com/posts/2023-03-19-ffmpeg-mp4-webm *** https://github.com/mifi/lossless-cut https://news.ycombinator.com/item?id=40829494 LosslessCut: The Swiss army knife of lossless video/audio editing (github.com/mifi) https://news.ycombinator.com/item?id=40892812 Ask HN: Where are the good resources for learning audio processing? https://indieweb.social/@xenodium/112841493311260010 M-x speed-up-video-fragment https://www.reddit.com/r/emacs/comments/1ew1fmm/experimental_transient_interface_for_barebones/ # Local Variables: # coding: utf-8-unix # modes: (fundamental-mode sh-mode) # End: