[mythtv-users] 1920x1080 vs. 1920x1088 HDTV streams

[Bernd Paysan]

Hi,

Here in Germany, I can receive two HDTV streams via Astra. HD1 which is 
basically a demo, and ProSieben HD, which is free TV (the HDTV stream 
of ProSieben is also "experimental", but it's now running 24h normal 
program).

However, with MythTV, the results differ. HD1 works fine (at about 80% 
CPU load with my Athlon64, mostly due to the non-DMA xv transfer with 
the current Xorg over AGP). ProSieben HD has problems. I get lots of 
Messages like the following:

[mpeg2video @ 0x2aaaabaff790]invalid cbp at 19 2
[mpeg2video @ 0x2aaaabaff790]ac-tex damaged at 67 6
[mpeg2video @ 0x2aaaabaff790]ac-tex damaged at 66 67
[mpeg2video @ 0x2aaaabaff790]skiped MB in I frame at 25 67
[mpeg2video @ 0x2aaaabaff790]invalid mb type in I Frame at 1 19
[mpeg2video @ 0x2aaaabaff790]invalid mb type in I Frame at 1 20
[mpeg2video @ 0x2aaaabaff790]invalid mb type in I Frame at 1 21
[mpeg2video @ 0x2aaaabaff790]invalid mb type in I Frame at 1 22

The main difference is obvious when switching from ProSieben to HD1:

2005-05-19 22:41:44.184 AvFormatDecoder: Video has changed from 
1920x1080 to 1920x1088.

Apparently the 1920x1088 mode is decoded fine, while the 1920x1080 
doesn't. Both ProSieben HD and HD1 work fine with the Windows software 
from the vendor (the card is a TwinHan VisionPlus DVB-S card). MPlayer 
seems to have the same problems with recorded streams, so either the 
stream is broken when recording, or MPlayer suffers from the same bug.

-- 
Bernd Paysan
"If you want it done right, you have to do it yourself"
http://www.jwdt.com/~paysan/
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