[mythtv-users] Video playing at 30fps

Andrew Wilkinson andrewjwilkinson at gmail.com
Tue Nov 11 19:08:57 UTC 2014


I'm using the inbuilt Intel graphics card using vaapi. It's got to be a
settings issue because it works fine provided the tv is turned on before it
boots.

Andrew

On Tuesday, 11 November 2014, Peter Bennett (cats22) <cats22 at comcast.net>
wrote:

>  On 11/10/2014 04:38 AM, Andrew Wilkinson wrote:
>
> Hi,
>
>  Since upgrading from Mythbuntu 12.04 to 14.04 I've had the issue where
> if booted without the tv being on then there is no signal when the tv is
> switched on. I've resolved the issue by disabling xfsettingsd and running a
> script that calls xrandr on hdmi connect. There is one remaining issue, and
> that's that after my script uses xrandr to turn on the screen MythTV plays
> all recordings at 30fps, making the sound higher pitched than usual. If the
> tv is on when the machine is booted the recordings play at 25 fps as usual.
>
>  Here is the xrandr output when the TV was on when booted:
>
>  Screen 0: minimum 320 x 200, current 1360 x 768, maximum 32767 x 32767
> VGA1 disconnected (normal left inverted right x axis y axis)
> HDMI1 disconnected (normal left inverted right x axis y axis)
> HDMI2 connected 1360x768+0+0 (normal left inverted right x axis y axis)
> 160mm x 90mm
>    1360x768       60.0*+
>    1920x1080i     60.1     50.0     60.0
>    1280x720       60.0     50.0     59.9
>    1024x768       60.0
>    800x600        60.3
>    720x576        50.0
>    720x480        60.0     59.9
>    640x480        60.0     59.9
>    720x400        70.1
> VIRTUAL1 disconnected (normal left inverted right x axis y axis)
>
>  And here's the start of the frontend log with -v playback, also when the
> TV was on when booted.
>
>  http://pastebin.com/A1DMTgqN
>
>  Here is the xrandr output from when the TV was turned off when the
> machine booted:
>
>  Screen 0: minimum 320 x 200, current 1360 x 768, maximum 32767 x 32767
> VGA1 disconnected (normal left inverted right x axis y axis)
> HDMI1 disconnected (normal left inverted right x axis y axis)
> HDMI2 connected 1360x768+0+0 (normal left inverted right x axis y axis)
> 160mm x 90mm
>    1920x1080i     60.1 +   50.0     60.0
>    1360x768       60.0*+
>    1280x720       60.0     50.0     59.9
>    1440x576       50.0
>    1024x768       60.0
>    1440x480       60.0     59.9
>    800x600        60.3
>    720x576        50.0
>    720x480        60.0     59.9
>    640x480        60.0     59.9
>    720x400        70.1
> VIRTUAL1 disconnected (normal left inverted right x axis y axis)
>
>  And here's the log with -v playback from when TV was off during boot.
>
>  http://pastebin.com/wBxuCP2M
>
>  As you can see in the second of these log outputs it is playing the
> video at 30fps, but earlier it correctly detects that the video is 25fps.
> Why? What can I do to get it to play at the correct speed?
>
>  Many thanks,
> Andrew
>
>
>  What video adapter do you have?
> I have had problems in the past of recordings playing at the wrong speed.
> I switched to an NVidia display adapter and use vdpau and have not had the
> problem since. I use the $20 Nvidia GeForce 210.
>
> Peter
>
>
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