Bug 68492 - [IVB/BYT/BSW] Macroblocking artifact seen on a VC1 video file
Summary: [IVB/BYT/BSW] Macroblocking artifact seen on a VC1 video file
Alias: None
Product: libva
Classification: Unclassified
Component: intel (show other bugs)
Version: unspecified
Hardware: All Linux (All)
: medium major
Assignee: Focus.Luo
QA Contact: Sean V Kelley
: 84552 (view as bug list)
Depends on:
Reported: 2013-08-23 23:01 UTC by sameer.kibey
Modified: 2016-12-07 02:50 UTC (History)
3 users (show)

See Also:
i915 platform:
i915 features:


Description sameer.kibey 2013-08-23 23:01:04 UTC
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:


Playback command:
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.
Comment 1 sameer.kibey 2013-08-23 23:03:05 UTC
These macroblocking artifacts are not seen when playing the same file with software codec, or with windows media player on Windows.
Comment 2 Kevin Mitchell 2014-10-01 15:58:39 UTC
*** Bug 84552 has been marked as a duplicate of this bug. ***
Comment 3 haihao 2015-11-23 14:28:31 UTC
We fixed some VC1 related issues this year. Could you try the latest driver if you still experience this issue ?
Comment 4 Kevin Mitchell 2016-01-12 04:48:16 UTC
Problem persists unchanged for me with libva and intel-driver git master.
Comment 5 megaup987 2016-02-05 20:04:27 UTC

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.
Comment 6 haihao 2016-12-07 02:50:26 UTC
Hi Focus,

Can you reproduce this issue on SKL or KBL? 


Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.