[mythtv-users] Flashing line at bottom of HD-PVR recordings

[Dan Wilga]

On 1/14/13 11:13 AM, Dan Wilga wrote:
> On 1/14/13 8:55 AM, Ronald Frazier wrote:
>> On Sat, Jan 12, 2013 at 3:08 PM, Justin Johnson
>> <justin.johnson3 at gmail.com>  wrote:
>>> Since upgrading to 0.26 I see a flashing line at the bottom of my HD-PVR
>>> recordings. It only happens on 1080i channels, which leads me to suspect
>>> that it is related to the fact that there are really 1088 lines in the
>>> video.
>>>
>>> Anyone have the same experience? Any workarounds or solutions/patches? I
>>> didn't see anything current in trac.
>> Adjusting overscan will work, but I certainly wouldn't call that a
>> solution. Have you tried using a different deinterlacer? Are you using
>> VDPAU? What if you switch back to CPU deciding (ex: using the High
>> Quality profile). I'd play around with those and see if any of them
>> gets rid of it. If so, even if that's not the solution you want, it
>> might give you a clue where to look (like upgrading your nvidia
>> drivers or something).
>>
> I have also noticed this consistently since upgrading to 0.26. It 
> happens even to recordings that were made before 0.26, so I know it is 
> an output problem, not in the files. It happens for both VDPAU Medium 
> and VDPAU High. I'll try one of the other rendering methods tonight. 
> IIRC, it happens for all mkv files, regardless of resolution, and does 
> not happen for other file types. Therefore, I suspect the embedded 
> ffmpeg code, myself.
>
> FYI, I'm using 0.26-fixes commit 28846f from January 3.
I went through a bunch of permutations last night, and discovered:
- When the recording was made by the HD-PVR, the flashing line was 
always present.
- Display profile did not seem to be a factor. My usual default of VDPAU 
High Quality did it, as did OpenGL High Quality.
- Contrary to what I said above, it did NOT do this for all mkv files. 
Ones that were recorded at 1080i but transcoded down to lower 
resolutions with Handbrake were fine. I don't have anything recoded with 
the HD-PVR at resolutions lower than 1080i to test with.

-- 
Dan Wilga                                                        "Ook."

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