[mythtv-users] VDPAU Current Status Report

Mark Kendall mark.kendall at gmail.com
Fri Jan 9 02:47:18 UTC 2009


2009/1/8 Mitch Gore <mitchell.gore at gmail.com>:
> Ok so after doing a bunch of trial and error here is what i get.
>
> using r19597 driver 180.16

Sorry for the delay - I missed this for some reason yesterday. Clearly
you probably need to upgrade to 180.22 now - although I wasted an hour
of my life getting it to install this morning!

> Using Advanced 2x HW is completely un-watchable.  Moving to Bob2x is
> better but here are the results.
>
> All samples are OTA HD in 1080i or 720p.  I have my profiles set up if
> that video is 720 deinter. are set to none.  If 1080i use Bob.
>
> when playing HD from 1080 or 720 it works fine.
>
> BUT when watching a SD recording (still OTA digital) I get a strange
> ghosting look.  The video doesnt studder but its like there is a 3 or
> so frames over the top of the current one.
> Here is the log:
> 2009-01-07 22:08:45.293 NVP(3): LoadFilters(''..) -> 0x0
> 2009-01-07 22:08:45.297 OSD Theme Dimensions W: 640 H: 480
snip
> 'video_output' mean = '33363.13', std. dev. = '398.73', fps = '29.97'
> 'video_output' mean = '33363.22', std. dev. = '327.19', fps = '29.97'

I've not seen this at all -  check the newest driver. Have you tried
changing the scan while it's playing? are the fields reversed?

>
> At random times when playing a video i get a black screen, no audio or
> video; to recover i must kill frontend:
snip
> 2009-01-07 22:05:25.671 VideoOutputXv: InitSetupBuffers() render:
> vdpau, allowed: vdpau
> Xlib: unexpected async reply (sequence 0x2c)!
> Xlib: sequence lost (0x10000 > 0x2c) in reply type 0x0!
> X Error: 0 0
>  Major opcode: 0 ()
>  Resource id:  0x0

Again, not something I've seen but, as you're probably aware, there
are ongoing issues with x crashes in recent trunk. This may not be
entirely vdpau related. Also possibly related to other blank screen
issues.

If it persists, raise a ticket with full -v playback logs etc.

> Some times It will play audio but no video; to recover i can escape key out.:
> 2009-01-07 22:07:25.601 VideoOutputXv: DiscardFrames() 3:
snip
> 'video_output' mean = '33363.22', std. dev. = '327.19', fps = '29.97'

Plenty more discussion on the list about this. I don't think it's
going to go away in a hurry - I suspect there is a proper workaround
but debugging it is tricky.

For me it happens if I swtich to another window, or more annoyingly,
if something else on the desktop takes the focus during playback.

> Looking through these sample I cant really see any issues with the
> ghosting.  You guys see anything?

Definitely try the new driver. Is it some odd video resolution?


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