[FFmpeg-devel] $250 to fix FLV cutting bug
Tue Jul 17 23:08:54 CEST 2007
Cyrus A wrote:
> Piero Bugoni wrote:
>>> I'm trying to cut a small portion out of a larger
>>> FLV file. I have an
>>> FLV file that is 156 seconds long. The command...
>>> ffmpeg -ss 6 -t 100 -y -vcodec copy -acodec copy -i
>>> ...should create a file that is 94 seconds long
>>> (seeking 6 seconds,
>>> duration for 100 seconds). Instead, it creates a
>>> file 150 seconds long.
>>> That is, it seems to be seeking for 6 seconds, then
>>> giving me the rest
>>> of the clip. Any ideas why that's happening?
>> Maybe the -ss and -t options are exclusive of each
>> Have you tries the -vframes option? If you know the
>> number of frames you want, try specifying that, and
>> maybe it will give you just the frames you want.
>> This probably belongs in ffmpeg.user.
>> If I figure it out for you, I'll post it there.
> Thanks for taking a look. I don't think this belongs on ffmpeg-user. I
> use the "-ss seek -t duration" combo extensively on other file formats
> (mostly DivX 5.0 MPEG-4 AVI) and it works great (99% of the time). There
> is obviously a bug here with FLVs.
> I'll let you know if I get any private responses and find a fix.
The donation is now $250 to fix the bug.
Sorry to turn this list into elance.com. Look at it as further evidence
of ffmpeg's commercial viability!
Again, the question at hand is getting the following command form to
work with FLV files:
ffmpeg -ss begintime -t duration -i inputflashfile.flv -acodec copy
-vcodec copy outputflashfile.flv
Thanks for your help.
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