Xine vdpau announcement

[arybak]

I have problems with xine as running as VDR client. I compiled xine-lib 1.2 cvs with "http://www.jusst.de/vdpau/files/xine-lib-1.2/xine-lib-1.2-vdpau-r167.diff.bz2" and mpeg2 channels work very good. But channels H.264 works good only about one minute. After this playing is chopping, not playing correctly. Always after xine restart few moments works well.

Two logs attached from wrong playing and the third was playing lost from the screen - blank screen showed.

Maybe someone can help?

Im using NVIDIA 8400GS card, with drivers 180.22.

My operating system is UBUNTU 8.04.1

[jusst]

Originally Posted by arybak

I have problems with xine as running as VDR client. I compiled xine-lib 1.2 cvs with "http://www.jusst.de/vdpau/files/xine-lib-1.2/xine-lib-1.2-vdpau-r167.diff.bz2" and mpeg2 channels work very good. But channels H.264 works good only about one minute. After this playing is chopping, not playing correctly. Always after xine restart few moments works well.

Two logs attached from wrong playing and the third was playing lost from the screen - blank screen showed.

Maybe someone can help?

Im using NVIDIA 8400GS card, with drivers 180.22.

My operating system is UBUNTU 8.04.1

You are probably running into a buffering issue... H264 is very critical about buffering on live streams.
rnissl might post his suggestions for good buffering values.

[arybak]

I was wondering that was my DVB-S card problem - thats not. I changed to other DVB card ant the problem is the same. When i need to search about buffering?

[mlampard]

You can either manually change the config file or change the settings within the gui.. Personally I think doing it manually is easier

Exit xine-ui.

Edit ~/.xine/config
Find and change the line
#engine.buffers.video_num_buffers:500
to
engine.buffers.video_num_buffers:900
(don't forget to remove the '#' from the start of the line)

and restart xine.

You may have to play with the value a little.

[LauriM]

I would like to thank the developers for their effort. With mkv support and vdr plugin xine-vdpau is really an excellent playback system.

I could never get NVidia's Xv working reliably. Playback of 50fps video on 50Hz display hogs CPU and 24fps on 60Hz sometimes hangs for a short while and misses a frame or two. VDPAU doesn't suffer from these problems.

nvidia-settings image adjustments (brightness, contrast etc) don't seem to apply to VDPAU output, but Xine's image controls and a test DVD fixed this nicely. Deinterlacing and zooming work well for watching TV.

One thing I'm not certain about: should BT.709 colorspace be used for HD content? Attached is a simple patch that switches to 709 for HD content. Should something like this (obviously with better heuristic) be added?

[jusst]

Originally Posted by LauriM

I would like to thank the developers for their effort. With mkv support and vdr plugin xine-vdpau is really an excellent playback system.

I could never get NVidia's Xv working reliably. Playback of 50fps video on 50Hz display hogs CPU and 24fps on 60Hz sometimes hangs for a short while and misses a frame or two. VDPAU doesn't suffer from these problems.

nvidia-settings image adjustments (brightness, contrast etc) don't seem to apply to VDPAU output, but Xine's image controls and a test DVD fixed this nicely. Deinterlacing and zooming work well for watching TV.

One thing I'm not certain about: should BT.709 colorspace be used for HD content? Attached is a simple patch that switches to 709 for HD content. Should something like this (obviously with better heuristic) be added?

Thank you for that note. Actually it shouldn't be decided according to the resolution but due to some flags in the stream. I am going to implement this tomorrow.

[jusst]

xine-vdpau r189 includes proper selection of the color standard now.

thanks for the hint

[ciaccom]

hi, many thanks to the developers for your work getting vdpau support working with xine!

just a question concerning deinterlacing (live broadcast material / SDTV and HDTV 1080i):

what settings would you advice to get the best "subjective quality"?

at the moment i'm using "--post tvtime:method=use_vo_driver" and "video.output.vdpau_deinterlace_method:temporal_sp atial" in .xine/config. there's also "video.driver:vdpau" active. for SDTV and 720P material everything is really working fine - but 1080i material is jerked with these setting (cpu is used at 10-20%). only if i deactivate deinterlacing at all, the 1080i broadcasts are fluidly represented!

thanks in advance!

Edit: i'm using xine-lib-1.2 with patch r193 / driver is 180.25

[jusst]

Originally Posted by ciaccom

hi, many thanks to the developers for your work getting vdpau support working with xine!

just a question concerning deinterlacing (live broadcast material / SDTV and HDTV 1080i):

what settings would you advice to get the best "subjective quality"?

at the moment i'm using "--post tvtime:method=use_vo_driver" and "video.output.vdpau_deinterlace_method:temporal_sp atial" in .xine/config. there's also "video.driver:vdpau" active. for SDTV and 720P material everything is really working fine - but 1080i material is jerked with these setting (cpu is used at 10-20%). only if i deactivate deinterlacing at all, the 1080i broadcasts are fluidly represented!

thanks in advance!

Edit: i'm using xine-lib-1.2 with patch r193 / driver is 180.25

What GPU are you using? - Only the very fast ones can do Temporal Spatial on 1080i content. Still you can set vdpau_deinterlace_method to temporal. This will be (very) slightly less quality but less GPU power is required...
SD content will always be deinterlaced by Temporal Spatial if deinterlacing is enabled, btw. - All VDPAU capable cards can do that.

[ciaccom]

Originally Posted by jusst

What GPU are you using? - Only the very fast ones can do Temporal Spatial on 1080i content. Still you can set vdpau_deinterlace_method to temporal. This will be (very) slightly less quality but less GPU power is required...
SD content will always be deinterlaced by Temporal Spatial if deinterlacing is enabled, btw. - All VDPAU capable cards can do that.

thanks a lot for your quick reply! my GPU is a 9400GT (G96/D9M / 550 MHz core) - according to wikipedia (http://en.wikipedia.org/wiki/GeForce_9_Series)

is it right to use the --post param (tvtime:method=use_vo_driver)? so vdpau_deinterlace_method out of .xine/config will be used? i'll give it a try with just "temporal" ..

[jusst]

Originally Posted by ciaccom

thanks a lot for your quick reply! my GPU is a 9400GT (G96/D9M / 550 MHz core) - according to wikipedia (http://en.wikipedia.org/wiki/GeForce_9_Series)

is it right to use the --post param (tvtime:method=use_vo_driver)? so vdpau_deinterlace_method out of .xine/config will be used? i'll give it a try with just "temporal" ..

Yep, that is correct... You GPU should work well with Temporal deint.

[ciaccom]

Originally Posted by jusst

Yep, that is correct... You GPU should work well with Temporal deint.

hello jusst! i tried it with "temporal" yesterday and it worked a bit better with 1080i, but the presentation was jerked again. so i gave "bob" as deinterlacing algorithm a try - with "bob" it's working very good now

is it possible that the CPU is affecting the whole thing? i have a AMD K8 (BE-2400). people (vdr-portal) reported that they use "temporal_spatial" successfully with a strong K10 CPU (but my K8 is just at 10-25% usage with "temporal_spatial" - 1080i is still jerked) -- so i think also the GPU power is the only thing, the useable deint.-algo is dependend of ... (??)

thank's for your hint, changing the deninterlacing algorithm!