[MPlayer-users] frames skipped when grabbing DVD

[Matus UHLAR - fantomas]

> On Mon, Jun 07, 2010 at 07:16:44PM +0200, Matus UHLAR - fantomas wrote:
> > - I get many "Skipping frame!" errors:
> 
> [...]
> 
> > When I add the "-noskip" option, first few frames are OK but later I get
> > this error:
> 
> [...]
> 
> > Too many video packets in the buffer: (4096 in 8249187 bytes).
> 
> [...]
> 
> > In both cases I can't watch the movie, the first is distorted, the second
> > plays too slow. 
> > 
> > Has anyone an idea where could be the problem or how should I continue?

On 10.06.10 17:02, Daniel Dawson wrote:
> DVD-Video can be 23.976 fps or one of 25 fps or 29.97 fps (depending on
> the television format). Some video streams switch framerates in the
> middle (e.g. a 24 fps film with bits of video mixed in).

can I detect this somehow in mplayer/mencoder?

> That, plus the
> fact AVI doesn't support variable framerate, means you often can't
> transmux a VOB to AVI: mencoder can only keep the original rate and try
> to compensate by dropping or duplicating frames, but when you're
> stream-copying it can cause problems like you're seeing.

would be nicer if mencoder clearly said what's up :)

> > Recoding to mpeg-4 format works but I'd like to try something more without
> > repeatedly reading the disc...
> 
> I'd go with Alexander's suggestion. Use mplayer to dump the VOB.
> 
> Of course ideally, mencoder would support muxing VFR streams, but...

where does this problem lie, in formats or in mencoder itself?
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Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
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