[vlc-devel] [PATCH 1/3] Modifications to the VLC core to create a special VAAPI chroma

Konstantin Pavlov thresh at videolan.org
Wed Aug 5 14:12:59 CEST 2009

On Wed, Aug 05, 2009 at 01:17:05PM +0200, Etienne Membrives wrote:
> These three patches create a new picture type (fourcc 'VAAP'), a new video output and a chroma converter that use the Video Acceleration API (VAAPI) hardware acceleration to decode, display or help transcoding compressed videos. Due to the lack of implementation of subpicture blending in current VAAPI drivers, no OSD is available for the new video output.

VLC master compiles fine with those patches, but i experience a lot of
picture jittering with -V vaapi. VLC log file is flooded with messages
like that:

[0x90666d8] main subpicture error: blending YUVA to VAAP failed
[0x9068008] main blend debug: looking for video blending module: 1
[0x9068008] main blend debug: TIMER module_need() : 0,127 ms - Total 0,127
ms / 1 intvls (Avg 0,127 ms)

The complete log file can be found at http://dumpz.org/11223/

libva version 0.2.9, ffmpeg 19530.

У мула спросили: "Кто твой отец?" Он ответил: "Моя мать - лошадь".
		-- Турецкая пословица
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