mirror of
https://github.com/amiaopensource/ffmprovisr.git
synced 2024-11-10 07:27:23 +01:00
104 lines
3.4 KiB
Markdown
104 lines
3.4 KiB
Markdown
TO DO
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javascript for hiding form questions
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function newQuestion(){
$question.hide();
$question.first().show();
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$form.on("click", ".new-question", function() {
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$(this).parent().parent().next().slideDown("slow");
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});
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}
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ffmpeg questions and answers:
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Examples via http://www.catswhocode.com/blog/19-ffmpeg-commands-for-all-needs
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Getting infos from a video file
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ffmpeg -i video.avi
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Turn X images to a video sequence
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ffmpeg -f image2 -i image%d.jpg video.mpg
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This command will transform all the images from the current directory (named image1.jpg, image2.jpg, etc…) to a video file named video.mpg.
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Turn a video to X images
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ffmpeg -i video.mpg image%d.jpg
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This command will generate the files named image1.jpg, image2.jpg, …
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The following image formats are also availables : PGM, PPM, PAM, PGMYUV, JPEG, GIF, PNG, TIFF, SGI.
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Encode a video sequence for the iPpod/iPhone
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ffmpeg -i source_video.avi input -acodec aac -ab 128kb -vcodec mpeg4 -b 1200kb -mbd 2 -flags +4mv+trell -aic 2 -cmp 2 -subcmp 2 -s 320x180 -title X final_video.mp4
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Explanations :
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Source : source_video.avi
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Audio codec : aac
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Audio bitrate : 128kb/s
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Video codec : mpeg4
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Video bitrate : 1200kb/s
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Video size : 320px par 180px
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Generated video : final_video.mp4
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Encode video for the PSP
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ffmpeg -i source_video.avi -b 300 -s 320x240 -vcodec xvid -ab 32 -ar 24000 -acodec aac final_video.mp4
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Explanations :
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Source : source_video.avi
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Audio codec : aac
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Audio bitrate : 32kb/s
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Video codec : xvid
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Video bitrate : 1200kb/s
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Video size : 320px par 180px
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Generated video : final_video.mp4
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Extracting sound from a video, and save it as Mp3
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ffmpeg -i source_video.avi -vn -ar 44100 -ac 2 -ab 192 -f mp3 sound.mp3
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Explanations :
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Source video : source_video.avi
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Audio bitrate : 192kb/s
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output format : mp3
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Generated sound : sound.mp3
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Convert a wav file to Mp3
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ffmpeg -i son_origine.avi -vn -ar 44100 -ac 2 -ab 192 -f mp3 son_final.mp3
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Convert .avi video to .mpg
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ffmpeg -i video_origine.avi video_finale.mpg
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Convert .mpg to .avi
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ffmpeg -i video_origine.mpg video_finale.avi
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Convert .avi to animated gif(uncompressed)
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ffmpeg -i video_origine.avi gif_anime.gif
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Mix a video with a sound file
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ffmpeg -i son.wav -i video_origine.avi video_finale.mpg
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Convert .avi to .flv
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ffmpeg -i video_origine.avi -ab 56 -ar 44100 -b 200 -r 15 -s 320x240 -f flv video_finale.flv
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Convert .avi to dv
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ffmpeg -i video_origine.avi -s pal -r pal -aspect 4:3 -ar 48000 -ac 2 video_finale.dv
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Or:
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ffmpeg -i video_origine.avi -target pal-dv video_finale.dv
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Convert .avi to mpeg for dvd players
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ffmpeg -i source_video.avi -target pal-dvd -ps 2000000000 -aspect 16:9 finale_video.mpeg
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Explanations :
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target pal-dvd : Output format
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ps 2000000000 maximum size for the output file, in bits (here, 2 Gb)
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aspect 16:9 : Widescreen
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Compress .avi to divx
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ffmpeg -i video_origine.avi -s 320x240 -vcodec msmpeg4v2 video_finale.avi
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Compress Ogg Theora to Mpeg dvd
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ffmpeg -i film_sortie_cinelerra.ogm -s 720x576 -vcodec mpeg2video -acodec mp3 film_terminée.mpg
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Compress .avi to SVCD mpeg2
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NTSC format:
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ffmpeg -i video_origine.avi -target ntsc-svcd video_finale.mpg
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PAL format:
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ffmpeg -i video_origine.avi -target pal-svcd video_finale.mpg
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Compress .avi to VCD mpeg2
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NTSC format:
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ffmpeg -i video_origine.avi -target ntsc-vcd video_finale.mpg
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PAL format:
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ffmpeg -i video_origine.avi -target pal-vcd video_finale.mpg
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Multi-pass encoding with ffmpeg
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ffmpeg -i fichierentree -pass 2 -passlogfile ffmpeg2pass fichiersortie-2 |