[mythtv] VAAPI2 improvements
and.mayer at aon.at
Thu Nov 8 22:00:35 UTC 2018
On 07.11.2018 20:42 Peter Bennett wrote:
> There are some further improvements that will reduce CPU usage with
> VAAPI2. Please try the latest master commit
> (9d627fe9eec3aca85e7ae62ada8f04b2cf26fc83) and see if it helps.
I have tried the latest commit yesterday with LiveTV and the test video
using mythavtest, VAAPI2 works even better now (but VAAPI playback is
still a bit smoother, although with VAAPI I'm getting sometimes a black
flashing screen, I guess because of some frame flips not in sync with
With VAAPI/avsync2 and -v playback I see repeating lines during playback:
Player(0): dropping frame to catch up, lateness=51000 usec
With VAAPI2/avsync2 and -v playback I see repeating lines during playback:
Player(0): Waiting for video buffers...
Player(0): dropping frame to catch up, lateness=48000 usec
For VAAPI2 FE cpu went up to 90%, intel_gpu_top shows: render busy 60%
GAM 85% CS 55% TSG 40% VFE 40% GAFS 20%
So both cpu and gpu show higher utilization now.
I have tried with display 1920x1080 at 50 and 3840x2160 at 30 (HDMI 1.4)
I will continue testing VAAPI2/avsyc2 with LiveTV (SD, HD and UHD) using
3840x2160 at 30 to see if this configuration works stable now (I think I
noticed audio not starting yesterday sometimes).
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