Macroblocking artifacts seen during playback of a WMV file with VC1 video using vaapi-decode. The macroblocks can be seen in the first 3-4 seconds of the clip. Also artifacts are more prominent around 02:31 timestamp in the playback.
Instructions to reproduce:
gst-launch-0.10 filesrc location=elephant_dream.wmv ! asfdemux ! vaapidecode ! queue ! vaapisink
reproduced on Ivybridge 64-bit and Baytrail-M 32-bit with 13.10 Ubuntu and 3.11 kernel.
These macroblocking artifacts are not seen when playing the same file with software codec, or with windows media player on Windows.
*** Bug 84552 has been marked as a duplicate of this bug. ***
We fixed some VC1 related issues this year. Could you try the latest driver if you still experience this issue ?
Problem persists unchanged for me with libva and intel-driver git master.
Seems like I'm having the same problem on ASRock Beebox Intel Celeron N3000. The file is coded VC-1, 1080p24. When I play the file with VAAPI enabled, I get the square artifacts on the screen. I experienced this problem with vaapi intel-driver 1.6.1 and 1.6.2. If VAAPI is disabled, the problem disappears, but the CPU load is too much.
You may get the file here: https://docs.google.com/uc?id=0B9X316MN6HHvSlNWb1ZhSGo2X2M&export=download (Second 3 till the end).
Reproduced on Braswell 64-bit, with OpenELEC 6.0.0, Linux Mint 17, kernel 4.3.3, vaapi intel-driver 1.6.1 and 1.6.2.
Can you reproduce this issue on SKL or KBL?