Bug#857552: i965-va-driver: failing to play videos (stops half-way through)

[Luke Kenneth Casson Leighton]

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crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68


On Sun, Mar 12, 2017 at 7:01 PM, Sebastian Ramacher
<sramacher at debian.org> wrote:
> Control: tags -1 + moreinfo
>
> On 2017-03-12 13:31:24, lkcl wrote:
>> Package: i965-va-driver
>> Severity: important
>> Tags: upstream
>>
>> i'm getting a video stopping half-way through with the following errors
>> (reported under vlc):
> ...
>> [00007f16c0d62ff8] avcodec decoder: Using Intel i965 driver for Intel(R) Skylake - 1.7.3 for hardware decoding.
>> [00007f16c0c01978] mkv demux error: Dummy Element at unexpected position... corrupted file?
>> [00007f16c0c01978] mkv demux error: Dummy element too large or misplaced at 770798513... skipping to next upper element
>> [00007f16c0c01978] mkv demux error: Dummy Element at unexpected position... corrupted file?
>> [00007f16c0c01978] mkv demux error: Dummy element too large or misplaced at 772666289... skipping to next upper element
>> [00007f16c0c01978] mkv demux error: Dummy Element at unexpected position... corrupted file?
>> [00007f16c0c01978] mkv demux error: Dummy element too large or misplaced at 774009777... skipping to next upper element
>> [00007f16c0c01978] mkv demux error: This element is outside its known parent... upping level
>> [h264 @ 0x7f16c0c3f460] co located POCs unavailable
>> [h264 @ 0x7f16c0c30420] co located POCs unavailable
>> [h264 @ 0x7f16c0c3f460] co located POCs unavailable
>> [h264 @ 0x7f16c0c30420] co located POCs unavailable
>> [h264 @ 0x7f16c0c30420] co located POCs unavailable
>
> Or is that a problem with the file?

 yes... but it certainly shouldn't just bomb-out like that (it's not a
corrupted file from being downloaded, it's a correctly-downloaded
confirmed uncorrupted download)

> Does the issue happen with every file or only that one?

 on occasion, several files (not all), but it's repeatable and at the
exact same place if it occurs.  so for example let's say that vlc
stops with the above error at 1m30s into the file, it's going to
happen *exactly* at that point *every* time *specifically* for that
file and that file only.

> Does it happen with any
> other video player (or when disabling hardware acceleration)?

 hmmm good points, i'll find out.  of course i'll have to set up hw
accel for other players... resource-hogging might make playback
difficult without hwaccel.... these are 720p files, quite
resource-intensive: just have to see how it goes.

l.