[FFmpeg-user] ffmpeg treats m4v as container not elementry video format

[Yogesh Tyagi]

On Tue, Jan 22, 2013 at 7:32 PM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
> Yogesh Tyagi <yogesh.bit2006 <at> gmail.com> writes:
>
>> >> What format should I use so that I get mpeg4 video elementary stream.
>> >
>> > You have to use -f m4v to choose the right format:
>> > $ ffmpeg -i input -vcodec copy -f m4v out.m4v
>
>> If I use "-f m4v" to generate mpeg4 video elementary stream from a 3gp
>> file and I try to play this file with ffplay, It throws following
>> error:
>> "Invalid data found when processing input"
>
> You have to add the extradata to the output file:
> $ ffmpeg -i input -vcodec copy -f m4v -vbsf dump_extra out.m4v
>
> Carl Eugen
>
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It works.Thanks