[NUT-devel] [PATCH] libnut muxer: write at least one timebase

Oded Shimon ods15 at ods15.dyndns.org
Fri Feb 2 14:40:52 CET 2007

On Fri, Feb 02, 2007 at 11:38:32AM +0100, Michael Niedermayer wrote:
> Hi
> On Fri, Feb 02, 2007 at 11:10:32AM +0200, Oded Shimon wrote:
> > On Mon, Jan 22, 2007 at 02:24:07PM +0100, Clemens Ladisch wrote:
> > > This patch adds code to make sure that there is at least one timebase.
> > > Otherwise, creating a file without any stream would result in an
> > > invalid file, or the muxer would crash when trying to write max_pts
> > > in the index.
> > 
> > Is a file without any streams valid?..
> hmm, i think we havent thought about that ...
> at least such a file cannot contain any frames, stream headers or syncpoints
> and without timebases it cannot contain an (useless) index and info packets
> now the timebase less case really is useless because the only thing which
> you could store in the file would be the main header and possibly future
> new headers ...
> in the streamless but not timebase less case you could store an index which
> would contain nothing and info packets iam not sure if theres any use for
> that? seperating info packets from actual streams like providing just a
> info packet file for some other file, like providing detailed info for
> a dvd, so someone could take th dvd remux it to nut and add the info somehow
> ?

I have no strong feeling on this. I would not be against a 'stream_count 
MUST be >0' ...

- ods15

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