[FFmpeg-user] Trimming an FLV file

belcampo belcampo at zonnet.nl
Fri May 6 18:49:09 CEST 2011

On 05/06/11 16:30, Maarten Weber wrote:
> Hi all,
> I'm new to this mailinglist and I've got an issue on my hands concerning the trim function of FFmpeg. I must note that I'm using the FFmpeg version which is built in with Xuggler.
> The main problem is that I can use the -ss parameter to crop an FLV file from the beginning, but using the -t parameter gives no result. I get the same FLV size.
> As I'm writing this I'm wondering if the -acodec copy and vcodec copy can have something to do with the -t not taking any effect. Though this shouldn't prevent the -t from working does?
> So, I'm using ffmpeg as follows:
> ffmpeg -i test.flv -acodec copy -vcodec copy -t 2 test_trimmed.flv
Put the -t 2 before -i
or as an alternative
-vframes 50
if it is a 25fps source.
> Does anyone have an idea as to why the -t isn't working? Am I doing something wrong here?
> Thanks in advance!
> Maarten
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