Another forward of a previous mail. (See below)
Anfang der weitergeleiteten E-Mail:
Von: Hannes Friederich <hannesf@xxxxxxxxxx>
Datum: 24. Februar 2005 17:53:06 GMT+01:00
An: Damien Sandras <dsandras@xxxxxxxxxxx>
Cc: Guilhem Tardy <gravsten@xxxxxxxxx>
Betreff: H.261 video problems - fixed
Hi Damien,
I recently posted a mail to the openh323 mailing list about problems with the vic-h.261 codec.
Today, I was able to fix these problems:
The problem is that the h.261 codec chooses either the IntraP64Decoder or the FullP64Decoder, depending on the first incoming h.621 packet header. It may happen that the codec chooses the IntraP64Decoder where he should use the FullP64Decoder, something which obviously leads to to bad image quality.
I assume that the only reason to choose the IntraP64Decoder at all was performance. On modern machines, this is no longer a problem at all.
I therefore suggest to patch the h.261codec.cxx as in the attached patch.
BTW, this is also another improvement for GnomeMeeting 1.2...
Cheers
Hannes
h261codec.patch
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