[FFmpeg-user] AVI size limit
benoit at friry.net
Thu Apr 21 19:57:56 CEST 2011
> In order to rip VHS on my rather old box, I purchased a Dazzle
> USB device.
> My command is
> ffmpeg \
> -f alsa \
> -i plughw:0,0 \
> -f video4linux2 -tvstd SECAM \
> -i /dev/video0 \
> -acodec pcm_s16le \
> -ac 2 -ar 44100 \
> -vcodec mjpeg \
> -s 720x576 -r 25 -sameq \
> -f avi \
> I cannot compress in real-time (CPU too weak). So I grab in mjpeg,
> and will reencode later.
> It works as expected for short videos. But with a longer video,
> ffmpeg is killed after 1h35'50". The output is 13836 MB.
> I don't understand why. File too big?
> The output file is readable by vlc ou avidemux, but ffplay is
> wrong about it:
> Input #0, avi, from 'brut.avi':
> ISFT : Lavf52.64.2
> Duration: 00:07:35.12, start: 0.000000, bitrate: 255030 kb/s
> Stream #0.0: Video: mjpeg, yuvj420p, 720x576, 25 tbr, 25 tbn, 25 tbc
> Stream #0.1: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
> Don't understant why it only "see" 7'35".
Nobody? Any hint? Anything to look for? How to investigate?
I have no idea... :(
- Filesystem is ext3 with 4k block size (max file size is 2TB !)
- I did not find default value for "-fs".
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