[mythtv-users] Video playing at 30fps

[Andrew Wilkinson]

Further investigations into this issue reveal that if I set the audio
output to NULL then the video plays at 25fps as it should. Obviously the
lack of sound is a bit of problem...

This leads me to think that there is some issue with ALSA and my Onkyo amp.
As I mentioned before everything works fine if the TV and amp are on before
the computer boots, but there is an issue if they are switched on later
(e.g. if it is recording).

Any suggestions gratefully received.

Regards,
Andrew


On Tue, Nov 11, 2014 at 7:08 PM, Andrew Wilkinson <
andrewjwilkinson at gmail.com> wrote:

> 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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