[mythtv-users] Video playing at 30fps

[Peter Bennett (cats22)]

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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