HI,
I can't reproduce the mentioned issue- "distorted video output with
horizontal stripes" in my Haswell ,
but I hit some other issues while enabling cbr mode encoding..
Could you please file a bug against gstreamer-vaapi in gnome bugzilla,
https://bugzilla.gnome.org/enter_bug.cgi?product=gstreamer-vaapi
On 27.06.2015 21:46, ValdikSS wrote:
Hello!
I'm running libva 1.5.1 and libva-intel-driver 1.5.1 on Sandy Bridge.
If I encode any video with low (< 8 Mbit/s) bitrate I get very distorted video
output with horizontal stripes in it. This is a case for both cqp and cbr encoding.
I've tried to encode it with gstreamer 1.0, avcenc and h264encode with same
output result.
This is what I get with 3000 Kbit/s CBR encoding:
http://ovrload.ru/f/55938_bake-cbr-3000.mkv
It was encoded with the following gstreamer pipeline:
gst-launch-1.0 -e filesrc location=bake_op.mkv ! matroskademux ! vaapidecode !
videoconvert ! video/x-raw,format=NV12 ! vaapiencode_h264 rate-control=cbr
bitrate=3000 ! video/x-h264,stream-format=byte-stream ! h264parse ! matroskamux
! progressreport ! filesink location=bake-cbr-3000.mkv
Windows encoders like MediaCoder and handbrake produce decent video quality
without horizontal stripes. Nothing different with current git master of libva
and
libva-intel-driver.
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--
Thanks
Sree
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