[FFmpeg-devel] [PATCH] Vorbis-in-Ogg: Do not set timebase to invalid values

Reimar Döffinger Reimar.Doeffinger
Mon Feb 7 19:54:29 CET 2011


On Mon, Feb 07, 2011 at 01:32:21PM -0500, Justin Ruggles wrote:
> On 02/07/2011 12:40 PM, Reimar D?ffinger wrote:
> 
> > On Mon, Feb 07, 2011 at 03:49:45PM +0100, Michael Niedermayer wrote:
> >> On Mon, Feb 07, 2011 at 09:34:53AM -0500, Justin Ruggles wrote:
> >>>>>>> 1) Why is anything in libavformat setting codec->time_base for decoders
> >>>>>>> when the documentation says that's supposed to be done by libavcodec
> >>>>>>> ("decoding: Set by libavcodec.")?
> >>>>>>
> >>>>>> Because the docs are buggy
> >>>>
> >>>> here the docs should be fixed
> > 
> >>> I just didn't understand what you were saying. "the docs are buggy" and
> >>> "leave the documentation" seems contradictory and didn't really answer
> >>> my questions as to the best way to move forward.  My best guess is:
> >>>
> >>> 1) change time_base documentation to say "decoding: Set by user if
> >>> known, overridden by libavcodec if known"
> >>
> >> exactly
> > 
> > Uh, that does not fix the original issue. codec->time_base is set
> > by libavformat. That still contradicts that description.
> > What is the point of (AFAICT) some demuxers setting only stream->time_base
> > others setting stream->codec->time_base and others setting both (to the same value)?
> 
> 
> How does that contradict the description?  To libavcodec, the demuxer is
> the user.

I'd say the ffmpeg application is the user.
But I see how you meant it. So it's not wrong, but it does
not answer my real question.
Would a patch that removes all cases where demuxers set
codec->time_base (possibly using av_set_pts_info instead)
be accepted?



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