ffmpeg Magic Command Lines

ffmpeg is a swis-knife, which will save your arse in most difficult
conditions. here are some of my favourite command lines:

make old AVI for poor windows users:
ffmpeg -i input.mov -vf "yadif=0:-1:0, scale=iw/3:-1" -acodec libmp3lame -vcodec libxvid -ab 160k -bf 2 -q:v 3 -f avi output.avi



join more MP4s together and rescale them to 1920x1080 and 25fps

ffmpeg `cat list.txt` -filter_complex "[0:v:0] [0:a:0] [1:v:0] [1:a:0] concat=n=17:v=1:a=1 [v] [a]" -map "[v]" -map "[a]" -c:v libx264 -preset fast -r 25 -s 1920x1080 -c:a aac output.mp4

where list.txt is list like:
-i P1320241.MP4 -i P1320242.MP4 -i P1320243.MP4 -i P1320244.MP4 -i P1320245.MP4 -i P1320246.MP4 ....
generated by simple sh script
and "=17" is number of pieces in the list




DVD iso to mp4
 (thx matěj strnad)

ffmpeg -i input.iso -c copy -bsf:a aac_adtstoasc output.mp4



convert MXF to mp4 (rescale to fullhd), discarding first audio track (timecode
beep)
ffmpeg -i Clip0001.MXF -map 0:v:0 -map 0:a:1 -c:v libx264 -vf scale=1920x1080 -profile:v baseline output.mp4


EBU norm volume measurement (telka)
(thx tom potočný)

ffmpeg -i input.mp4 -filter_complex ebur128=peak=true+sample -vn -sn -dn -hide_banner -f null /dev/null


metadata

copy metadata to file
ffmpeg -i file.mp4 -f ffmetadata metadata.txt

show metadata:
ffprobe -show_streams -show_format filename.mp4

show all (requires mediainfo)
mediainfo -f --Language=raw filename.mp4 

delete metadata --- not working right now
ffmpeg -y -i "test.mp4" -c copy -map_metadata -1 -metadata title=" " -metadata creation_time=2016-09-20T21:30:00 -map_chapters -1 "test.mp4"

ffmpeg -y -i input.mp4 -c copy -map 0 -map_metadata 0 -metadata title=" " -metadata creation_time=2016-11-29T21:47:32 -metadata CodecID/Url=" " -metadata encoder=" " -metadata CodecID/Url=" " -metadata Encoded_Application=" " -map_chapters -1 "output.mp4"

stream download/capture windows media to local file:
ffmpeg -i mmsh://xxx.xxx.xxx/xxxx -acodec copy -vcodec copy output.mp4
(replace mms: to mmsh:)

psp download
ffmpeg -i mmsh://94.112.254.26/psp_video -acodec copy -vcodec copy psp-2017-01-19.wmv


EOF

Comments requested

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