OpenChrome + MythTV[vid] => no 1080i

[masterclc@…]

I'm testing the mythtv-vid branch to see if the improvements for HDTV display on a CN400 (SP13000 and Commell 667-T) are working in MythTV. I get failed results.

With 720p I get video, but extremely stuttery audio, completely unwatchable in MythTV.

With 1080i I get a blank image (black screen), but I do get audio, though it too is stuttery.

With 480i (PVR-500) I am able to watch my recordings, smooth audio and video in MythTV.

720p, 1080i and 480i all work when displaying the exact same videos in Xine using xxmc. I'm attaching my log files for playback on MythTV-VID branch.

Thanks!

-Chad

[masterclc@…]

Output from mythfrontend -v playback on 1080i

[masterclc@…]

Output from mythfrontend -v playback on 720p

[masterclc@…]

Output from mythfrontend -v playback on 480i

[danielk]

Looks like a broken driver. A working driver will report when it can not allocate another XvMC surface; but in the log shows you using 16 1920x1088 surfaces, which the VIA hardware can not handle.

12 maybe, not 16.

Please, try the latest OpenChrome? driver before reporting the problem there.

[masterclc@…]

I'm using the latest openchrome from svn (221) and mythtv-vid from SVN (svn update this evening). It seems that I cannot get XvMC working at all. I have removed all display profiles except 1, and have edited the db to use xvmc-vld on that 1 profile; but still am unable to use XvMC on the vid branch. Using SVN trunk (not vid) I still get the above results.

For completeness, I've created new logs as well for the 1080i and the 720p.

Thanks!

-Chad

[masterclc@…]

720p using profile claiming XvMC-VLD output

[masterclc@…]

1080i using profile claiming XvMC-VLD output

[masterclc@…]

I modified: libs/libmythtv/util-xvmc.h

And changed 16 to 12 for max_num_xvmc_surfaces()

libs/libmythtv/videodisplayprofile.h

And changed every instance of xv and xvmc to xvmc-vld and every instance of xv-blit to xvmc-blit. I also changed the first profile listed in that file from ffmpeg to xvmc-vld and chromakey.

After doing all of that (including my changes noted above to the db to remove all the other profiles) I was able to get myth to actually use the xvmc-vld output. However, the pauses are still there in 720p, approx every 4-6 seconds. In 1080i the pauses are far too often to even watch, but it appears to be every 2-3 seconds in 1080i.

I've created another log that I will attach after making all the above changes. I'll leave this source directory alone in case I need to post any of the changes I've made.

Thanks!

-Chad

[masterclc@…]

720p from modified vid-branch

[danielk]

Closing. It appears that there is a misconfiguration here, XvMC does not work with linearblend deinterlacing, the second deinterlacer should be onefield.

2006-09-30 00:57:11.692 VDP: Rejecting: cmp(> 0 0) dec(xvmc-vld) rend(xvmc-blit) osd(chromakey) deint(bobdeint,linearblend) filt()

Also it looks like you are trying to use chromakey OSD, but this does not work with 16 bit pixels, you need to use 32 bit pixels. I believe this is an Xorg configuration option with the via driver.