[FFmpeg-devel] Patch profile/level of existing avc-in-mp4 file

[Michael Niedermayer]

On Sun, Nov 18, 2007 at 12:55:28PM +0100, Erik Slagter wrote:
> > [question posed as should be answered in -user]
> > 
> >> (posting this to ffmpeg-devel because I suspect a developer might have
> >> such a thing around, don't flame me for not posting in ffmpeg-user please)
> > 
> > rephrase as "I'd like to set the profile level explicitly in ffmpeg and
> > seems that the current command line doesn't provide (check, it should
> > already) a simple way to set it." or "I'd like to add a ps3 preset
> > likely there are a psp and a wii ones"
> > 
> > and probably someone would answer this way.
> 
> Nope, that is not what I am asking. If this were my question, I would
> have had it answered a hundred times already using google and the
> mailing list archives.
> 
> I am also very much aware of the -level option in ffmpeg.
> 
> What I need is a tool that changes the profile/level information AFTER
> encoding. This wouldn't be a very difficult thing I guess. There is
> already some windows program that claims to do it (but doesn't work
> nonetheless, surprise...)

1. RTFS mpeg4_encode_visual_object_header()
2. write a bitstream filter
3. send patch

(4. add support to change aspect ratio, time base, ...)

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

In a rich man's house there is no place to spit but his face.
-- Diogenes of Sinope
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