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Re: H.261 video problems - fixed: msg#00392

telephony.openh323.general

Subject: Re: H.261 video problems - fixed

Hannes,

> The 3rd-party endpoints where I observed this problems were all MCU's,
> Radvision ViaIP 400 MCU-60 3... and Codian MCU 4210
>
> so I believe they are not just "any" 3rd-party endpoints...

This, along with some trace, is very important information.

> I have currently no trace file, but I can do some ethereal-diagnosis if
> you wish. However, I still think that I lack the required technical
> knowledge, although my learning-curve is steep at the moment...

My favoured way of producing traces:
in the codec.Write() function, PTRACE the first 12 bytes and last 4 bytes of
each packet before decoding.

And if this is not enough, then an Ethereal dump.

> Well, the patch itself was not a big deal. It took a considerable
> amount of time until I looked at the correct portion of the code,
> though. (including some early attempts to utilise the ffmpeg codec, but
> this hasn't got far)

Glad that you say so. Too many just look at the patch and think "easy".




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