Christian König wrote:
Am 18.10.2016 um 11:19 schrieb Andy Furniss:
boyuan.zh...@amd.com wrote:
From: Boyuan Zhang <boyuan.zh...@amd.com>
cabac is only supported in the h264 main and higher profiles
So shouldn't there be code allows it if the user space doesn't
set baseline?
I don't know how in gstreamer as it seems to try to use b-frames
if you use other than baseline which doesn't work.
With avconv it is possible to call main/high and set b-frames to 0.
I know it's technically correct spec wise, but seems a shame as it
costs a fair bit in "free" efficiency.
On Windows the raptor game recording app produces files flagged as
high with cabac - but without b-frames.
The problem is that it can easily break decoders. CABAC is simply not
allowed in a stream flagged as baseline compliant.
But with ffmpeg/avconv I can make a stream flagged as main/high even
if it's really baseline + CABAC. I guess Windows may vary but the test
I did seems to take this pragmatic approach, as it seems do other h/w
encoders eg. smartphone output.
It's a pity that we don't support B-frames any more.
Anymore? Now I am curious, seems to work with omx (cqp single instance)
With that in place
we could easily advertise support for mainline profile.
MBAFF/PAFF?
Christian.
Signed-off-by: Boyuan Zhang <boyuan.zh...@amd.com>
---
src/gallium/state_trackers/va/picture.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/src/gallium/state_trackers/va/picture.c
b/src/gallium/state_trackers/va/picture.c
index eae5dc4..db08a3c 100644
--- a/src/gallium/state_trackers/va/picture.c
+++ b/src/gallium/state_trackers/va/picture.c
@@ -110,7 +110,6 @@ getEncParamPreset(vlVaContext *context)
context->desc.h264enc.motion_est.enc_ime2_search_range_y =
0x00000004;
//pic control preset
- context->desc.h264enc.pic_ctrl.enc_cabac_enable = 0x00000001;
context->desc.h264enc.pic_ctrl.enc_constraint_set_flags =
0x00000040;
//rate control
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