[Ffmpeg-devel] question: wmv3 codec image "drifts"
Wed Nov 29 17:00:06 CET 2006
Ryan Martell skrev:
> On Nov 29, 2006, at 3:05 AM, Benjamin Larsson wrote:
>> Ryan Martell skrev:
>>> So I'm working on some mms streaming stuff.
>>> When I stream a file from an asx file, that's not live (but streamed
>>> via mms), it looks great.
>>> When I play a live stream that's been encoded by the WM9 encoder,
>>> there is a weird "drift" effect. The I frames look great, and then
>>> after that, the changes seem to drift. The colors then get out of
>>> whack slowly until the next I frame.
>>> Has anyone seen this before (in a non-streaming solution?)? I know
>>> I'm out on the bleeding edge with this, but thought someone might
>>> have an idea. Are there known limitations to the wmv3 decoder
>>> (options that I can disable on the encoder side?)
>>> I don't really know enough about the codec to intelligently figure
>>> out what it's doing.
>> Can you provide a sample?
> Not sure; I'll see if i can use ffmpeg to convert it from a streaming to
> a wmv, and if that works, i'll see if it has the same problem.
> The other option would be to get all the mms code in, and post the
> streaming url, but there's lots of code and it always takes awhile to
> get it all approved.
Dump a part of the stream with mplayer -dumpstream and see if you get
the same drift from the dumped file.
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