[mythtvnz] playback profiles filters

[Nick Rout]

On Thu, Jun 24, 2010 at 10:31 AM, Brett <mythicalbeast at slingshot.co.nz> wrote:
> On Tue, 2010-06-22 at 17:32 +1200, Geoff wrote:
>> >Is anyone using XBMC for playback ?
>>
>> YES - And after you have used XBMC - do you ever use the mythtv frontend
>> again.... No.
> Is this due to the GUI interface or the playback quality?
> Does it integrate well with the Myth BE ?
>
> It seems, from the forums at least, that XBMC is the playback benchmark
> with many software scaling options.
> It is hoped that the nVidia hq scaling (feature set C) will match this.
>
> Myth has an openGL playback filter option 'openglbicubic' scaler.
>
> Does anyone use this ?
>
> The OP was about the ability to switch playback methods by video format
> to allow easy use of the openGL scaling.

And the answer was 'no', unless you can differentiate the codec based
on the frame size.

EG your xvid stuff is likely 576i/p or smaller, where your h264 stuff
is probably 720p or larger, so if that is universally so then you
could use the rules mythtv provides.

However I have seen 576p stuff encoded as h264, as indeed DVB-T broadcasts are.

So it depends on your use case.

You could do what you want by using external players, eg mplayer with
different -vo parameters based on extension, or based on codec by
using a wrapper script.

In fact you MAY even be able to develop a script that detects codec,
then plays with mythavtest, setting the playback parameters via the -O
parameter.

nick at media:~$ mythavtest --help
-display X-server              Create GUI on X-server, not localhost
-geometry or --geometry WxH    Override window size settings
-geometry WxH+X+Y              Override window size and position
-w or --windowed               Run in windowed mode
-nw or --no-windowed           Run in non-windowed mode
-O or --override-setting KEY=VALUE
                               Force the setting named 'KEY' to value 'VALUE'
                               This option may be repeated multiple times
-v or --verbose debug-level    Use '-v help' for level info