Let's close this. Both bugs intermingled in this bug (nvidia driver bug
and vlc bug before 2.2.3) were fixed.
** Changed in: vlc (Ubuntu)
Status: Confirmed => Fix Released
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I had exactly this problem with blocky playback after I upgraded from
14.04 to 16.04. It affected all movie file types and any player that I
tried. After reading this report I replaced the nvideo driver 361.42 by
the previous version available (340.96) - and the problem went away
completely.
By
That's correct. VLC's vaapi and vdpau decoding seem broken in 16.04 but
work fine in pure software mode. mpv's vdpau works without issue.
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Title:
Alex, if you play an h.264 video file using "mpv --hwdec=vdpau
--vo=vdpau" it has no blockiness, and if you play the same file with VLC
using vdpau as the hardware-accelerated decoder and the video output
module, it has the same issue? If so, try playing the file with the
output module set to
3.0 daily builds from the PPA do not have this problem (though they
don't export menus properly in Unity), so I think it's safe to assume
the version in Ubuntu sources is the issue.
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I can duplicate this on Nvidia 364.15, also thought it was due to
differences in VLC between 14.04 and 16.04, but perhaps not. However,
mpv with vdpau works fine for me, no blockiness.
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Thanks for the information!
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Title:
VLC exhibits blockiness on h264 seeking
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I think this is a regression in the Nvidia Vdpau driver between 352 and
361, or possibly 346 and 352. It's not a VLC problem because it also
affects MPV.
The issue described in comments 3 and 4 is different, and is fixed in
VLC 2.2.2-5, which will be synced to Ubuntu from Debian at some point.
There you go!:
OpenGL renderer string: GeForce GTX 960/PCIe/SSE2
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Title:
VLC exhibits blockiness on h264 seeking
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Mary, can you run this command (requires mesa-utils to be installed)
$ glxinfo|grep "OpenGL renderer string"
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Title:
VLC exhibits blockiness on
The libvdpau-va-gl1 version is 0.3.6-1.
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Title:
VLC exhibits blockiness on h264 seeking
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Mary, could you please run this command, and post the results:
$ dpkg -s libvdpau-va-gl1 | grep Version
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Title:
VLC exhibits blockiness on h264
VLC 2.2.2 exhibits a known bug with VDPAU-VA-GL. Update to VLC 2.2.3 (or
Debian's 2.2.2-5) if you use the later.
That being noted, if your problem exists with MPV, then that is some
other bug. Something is wrong either in VAAPI hardware drivers, or in
VDPAU-VA-GL. Please reassign.
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In reference to comment #13, note that I'm running from the daily build
of 16.04.
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Title:
VLC exhibits blockiness on h264 seeking
To manage
Both:
$mpv --hwdec=vdpau --vo=vdpau
$mpv --hwdec=vdpau --vo=gl
yield blocky playback [on seeking], independently of libvdpau-va-gl
being installed or not.
Executing mpv without the parameters above yields artifacts-free
playback.
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can everyone having this problem please try playing the offending videos
with:
$mpv --hwdec=vdpau --vo=vdpau
and
$mpv --hwdec=vdpau --vo=gl
You may have to install mpv. Also, verify that you have a package called
libvdpau-va-gl1 installed. Report the results. Thanks.
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Gotcha! The problem is in the input. Once I disable the HW-accelerated
decoding, I don't get any more blockiness.
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Title:
VLC exhibits
BTW, in Input/Codecs, please switch Hardware-accelerated decoding to
"disable". This will change the decoder to FFMPEG-MT.
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Title:
VLC exhibits
Do any of the other modules work? You could run vlc at the cli with -vvv
and redirect to a file, which you could attach. For example: $vlc -vvv
>> vlc_output
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"Xvideo - XCB" doesn't even play, on my setup:
[7fecd4002058] core video output error: video output creation failed
[7fecc8f2dba8] core decoder error: failed to create video output
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Does the problem still occur if you switch the video output module to
XCB - Xvideo?
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Title:
VLC exhibits blockiness on h264 seeking
To manage
I can reproduce it also on on 16.04 beta 1.
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Title:
VLC exhibits blockiness on h264 seeking
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** Changed in: vlc (Ubuntu)
Importance: Undecided => Medium
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Title:
VLC exhibits blockiness on h264 seeking
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It looks like an issue specific to this class of videos.
Whether a video file is .avi or .mp4, it can have the audio/video compressed in
different ways.
Since the test video is 190MB, you can post the video details. Install _ffmpeg_
and run _ffmpeg -i myvideo.avi_.
Here is the output:
Input
Summary: the default video player in Ubuntu is Videos (the app "totem")
and it can play this video just fine.
Still, it would be great if the problem in VLC gets fixed. VLC uses its own
audio/video decoding software.
Videos (Totem) uses "gstreamer" and it works. Mplayer2 and ffplay use
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: vlc (Ubuntu)
Status: New => Confirmed
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Title:
VLC
For me, under 15.10, with Intel Skylake Core i7 6700 and the Intel
Graphics suite installed, the video plays back completely black. I can't
see anything at all.
Kernel: 4.2.0-27-generic #32-Ubuntu SMP Fri Jan 22 04:49:08 UTC 2016 x86_64
x86_64 x86_64 GNU/Linux
Desktop: Unity
VLC: 2.2.1
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