[mythtv-users] HD-PVR Framerate

[mythtv]

Most videos play back fine on the Pi3 but scenes with a lot of panning
(hockey games) will have a pretty regular stutter in the playback. 
Peter Bennett was looking into it and noticed some dropped frames that
could be related to the stutter.  I was thinking that if I could record
at 30fps, the Pi3 would be able to handle that easily.  I guess I could
just transcode everything, but that eliminates watching Live TV, which
we still do a lot of.  I was hoping to replace my Ions with Pi3s but I
guess I'm still a little ways away from that.  And I *really* don't want
to use Kodi.


On 11/30/2016 07:00 AM, Greg Thompson wrote:
>> On Nov 30, 2016, at 7:44 AM, mythtv <mythtv at mdabbs.org> wrote:
>>
>> Does anyone know how to set the HD-PVR to record at 30fps instead of
>> 60?  In trying to get the Pi3 to work, it was discovered that all of my
>> recordings are 720p at 59.94 fps instead 29.97.  Below is the output of
>> v4l2-ctl. Looking at the output below, it would seem that it would be
>> recording in 480i but full frame of 480 instead of half that.
>>
>> I'm on an older kernel because newer kernels don't seem to be stable
>> enough (The HD-PVR just stops recording after a few minutes).  I'm
>> feeding it video from a u-verse STB that is locked at 720p.  Does the
>> HD-PVR get it's framerate from the component video?  I'm considering
>> setting the STB to 1080i but I hate to have to deal with deinterlacing
>> it during playback.  I've never had good results with doing that so I'd
>> rather just record it in Progressive mode.
>>
>>
> 720P at 60fps is progressive mode.. AFAIK thats a standard for the HD box and can’t be changed their.. Can I ask why? I have no problems playing 720p 60fps on my Pi3.
>
> As to the Kernel issue, I have no issues with the latest kernel either. My Guess is a faulty Power Supply is causing your recordings to stop. This is a well known issue with the HD-PVR and failing power Supplies.
>
> -Greg
>
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