[Libav-user] Visual corruption when decoding H264

[Saurabh Gandhi]

I forgot to mention that I am using FFMPEG through OpenCV. Since an earlier
version of FFMPEG was giving problems while decoding H.264 based RTSP
stream, I updated to the latest FFMPEG version (recompiled it by self) and
it worked fine. Not sure if this serves your purpose.

--
Regards,
Saurabh Gandhi




On Thu, Jun 2, 2011 at 4:47 AM, STenyaK <stenyak at gmail.com> wrote:

> Thanks for the reply.
>
> Apart from updating to latest ffmpeg version, did you do anything else
> for it to work? I'm still experiencing the same visual glitches.
>
> On Mon, May 30, 2011 at 11:53, Saurabh Gandhi <saurabhg84 at gmail.com>
> wrote:
> > Are you using the latest version of FFMPEG. We had similar issues here
> which
> > got resolved by updating to the latest version
> >
> > --
> > Regards,
> > Saurabh Gandhi
> >
> >
> >
> >
> > On Mon, May 30, 2011 at 2:30 AM, STenyaK <stenyak at gmail.com> wrote:
> >>
> >> Hello,
> >> I'm having troubles trying to decode H264 by feeding
> >> avcodec_decode_video with data coming from an RTP stream. I'm going to
> >> describe the visual result, maybe it can help find out where the
> >> problem lies:
> >>
> >> The image is perfect in the first frame of the stream. From that point
> >> on, it looks as if only p-frames got decoded: the image begins to get
> >> progressively more blurred with each frame whenever something in the
> >> image changes or moves position.
> >> Every 10-20 seconds of stream, the image starts a quick reconstruction
> >> process. the image gets corrected (visual trails removed) in a sweep
> >> from left to right that takes about half a second or two.
> >>
> >> Reading the same RTP stream with other software (also based on ffmpeg)
> >> works correctly, with no visual corruption at all, so I must be
> >> missing something.
> >>
> >> Does anyone have any idea what the problem could stem from? Any
> >> pointers are appreciated.
> >>
> >> Thanks in advance.
> >>
> >> --
> >> Saludos,
> >>      Bruno González
> >>
> >> _______________________________________________
> >> Jabber: stenyak AT gmail.com
> >> http://www.stenyak.com
> >> _______________________________________________
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> >
> >
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> >
>
>
>
> --
> Saludos,
>      Bruno González
>
> _______________________________________________
> Jabber: stenyak AT gmail.com
> http://www.stenyak.com
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