[FFmpeg-user] Splitting a video in chunks with the same size

Henk D. Schoneveld belcampo at zonnet.nl
Wed Jun 8 10:56:35 CEST 2016

On 08 Jun 2016, at 10:39, Celso Coutinho <20.celso at gmail.com> wrote:

> Dear all,
> I want to be able to split a file in chunks with the same (previously
> defined) size (except the last chunk, of course). I have been trying
> several commands but without much success.
Out of curiosity, what is the reason for wanting same-sized chunks ?
Same-time chunks is what mostly is used.
> When I look into the documentation, I understand the *-fs* flag allows me
> to define the maximum size of the chunk I am obtaining in each time I run
> *ffmpeg,* but I don't know how to define the starting point of the chunk. I
> tried *-ss*, but it seems that I can only use it with time, rather than
> file size. Can someone enlighten me on this matter?
> Moreover, I have been trying to use the following command:
> *ffmpeg **-i raper.3gp -fs 102400 -vcodec copy -acodec copy -movflags
> faststart output1.avi*
> But the output video has no sound, plus the duration is always incorrect
> (video has 4 to 5 seconds, and the duration shown in the video is like one
> minute). Which codecs should I choose?
> Thanks in advance!
> Celso
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