[MPlayer-dev-eng] [BUG][PATCH] Decoding of WMV3 files fail, shows only black screen

[Ivan Kalvachev]

On 7/2/05, Alexander Strasser <eclipse7 at gmx.net> wrote:
> Shachar Raindel wrote:
> > On 7/2/05, Alexander Strasser <eclipse7 at gmx.net> wrote:
> > > Shachar Raindel wrote:
> > > > On 7/2/05, Alexander Strasser <eclipse7 at gmx.net> wrote:
> > >   Sorry, that I annoyed you by `defending' your position.
> >
> > Sorry for being bit impolite - I worked on it till 3 AM last night,
> > and when in the morning I found only the reply about "wmv is
> > pre-alpha" from someone who seemed not to understand what he is
> > talking about, I was quite angry. I shouldn't reply to your post
> > (which was indeed supporting my case) but his. Conclusion: never post
> > replies before eating brakefast :)
> 
> no problem. you will never know what will happen without a breakfast.
> 
> [...]
> > The current patch will fix the things and make them work for most
> > codecs (since most of the DMO codecs silently ignore the
> > DMO_INPUT_DATA_BUFFERF_SYNCPOINT flag if the data fed in is not a
> > key-frame, probably causing only small CPU overhead. On the other
> > hand, when this flag is not set and we feed the codec with data,
> > starting from the beginning of the file, it will not look for a
> > keyframe, and therefore will not show anything on screen until it will
> > get both the keyframe flag from MPlayer, and a keyframe in the stream
> > (which is rather rare). Note that I am only guessing how the codec
> > behaves, but I can tell that with this patch, all the wmv files I have
> > are playing correctly, and without it I get only a black screen and a
> > bunch of error messages.
> 
>   OK, i see. But I am sure it will need some investigation.
> The problem is usually most trivial looking changes, can break lots
> of things even when fixing others, so it's normally a good thing to
> be not too hasty and test things thoroughly.
> 
> > >   BTW could you upload a stream or a portion of a stream triggering this
> > > problem?
> > >
> > Uploading now - buggyDMOdecoding.wmv and the attached description
> > buggyDMOdecoding.wmv.txt
> 
> perfect, i'll try to look into it later tonight.
> 
>   Alex (beastd)

I wonder if I have become invisible or just my mail haven't arrived yet.
HELLOOOOOOO
(hint, i have done some investigation and had sent a patch)

Ivan Kalvachev
  iive