[MEncoder-users] [BUG] a-v sync problems with pullup, softskip (only on some DVDs)

D Richard Felker III dalias at aerifal.cx
Wed Mar 16 08:03:47 CET 2005


On Tue, Mar 15, 2005 at 09:43:01PM -0800, Corey Hickey wrote:
> Corey Hickey wrote:
> >>>I also just noticed something I hadn't before: when using pullup
> >>>mencoder reports "Could not get buffer from pullup!" four times. I just
> >>
> >>
> >>This is very bad and should never happen.. It means something is going
> >>radically wrong with the buffer management. Can you help me isolate
> >>the problem so I can see it happen on a small clip? If not, I'll try
> >>to come up with a patch that would help make a more useful debug log
> >>for me to read when it happens, or I might even download the big file
> >>if this problem proves to be very elusive..
> >>
> >
> >
> >I'll definitely do what I can to assist. I'll mess around with dd some 
> >more and see what I can come up with. If I can find a smaller clip I'll 
> >compile from cvs and see if your recent patch changes anything.
> >
> 
> I tried for a while; the smallest I could come up with is:
> dd if=starwars.vob of=buffer.vob bs=8192 skip=2172 count=8550
> 
> ...which ends up being 67 MB, or 65 MB bzipped.
> http://fatooh.org/files/mpbug/desync2/buffer.vob
> ...or...
> http://fatooh.org/files/mpbug/desync2/buffer.vob.bz2

Can you give me a command line that produces the error? I couldn't get
it to happen. Maybe my latest change I committed is masking the error?
I'll try some more tomorrow..

Rich




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