wrong downscaling when using vaapi transcoding

[kaufhauslicht 3]

Hi,

 

I compiled my own ffmpeg build in order to use vaapi acceleration. It is working fine when I am transcoding without any scaling (e.g. from 1080p 30MBit to 1080p 5Mbit). However, when I change the resolution (e.g. from 1080p 30MBit to 480p 1Mbit) the scaling is off and I only see the top left segment of the original picture (see "down scaling 480p.png and "org scaling 1080p.png). Without vaapi acceleration the scaling works fine.

 

I am running emby on Openmediavault 3.0.84 with Intel HD Graphics P4600 (Dell T20), as you can see in the server log (Log.txt) attached. 

 

So, what could be the problem? I would be delighted if you guys could help me.

 

Thanks,

kaufhauslicht

Log.txt

transcode_log_480p.txt

transcode_log_1080p.txt

Edited July 21, 2017 by kaufhauslicht

[puithove 209]

No issues here.  You may want to update your libva and / or video driver.

[kaufhauslicht 3]

Hey puithove,

 

thanks for your support. Libva and the intel i965 drivers are rather old in the official debian repo. Therefore, I installed both of them directly from intel. Now it is working. Thank you!