[vdr] Support for different frame rates? (Re: Frames per second PAL vs. NTSC)

Pasi Juppo Pasi at Juppo.fi
Tue Jan 6 08:12:04 CET 2009


Tony Houghton wrote:
> On Mon, 05 Jan 2009 20:48:57 +0200
> Pasi Juppo <Pasi at Juppo.fi> wrote:
>
>   
>> Partly question and partly proposal. Maybe this is not VDR related but
>> e.g. xineliboutput etc. related.
>>
>> I'm not an expert on satellite systems but I'd assume that there are
>> different frame rates in satellite systems available (shall be compared
>> to cable and terresterial as well). Instead of doing pull-down/pull-up
>> "conversions" it would be nice to playback according to the framerate of
>> the material. This should be an option as it is fully dependant on the
>> output and display devices whether they support this feature or not.
>>
>> The same applies also to mplayer-plugin.
>>
>> Would this be possible to implement?
>>     
>
> Yes, boxstar does this, but it's a bit limited by its current reliance
> on external players. DirectFB players can set the screen mode, while in
> X boxstar sets it first with xrandr. Boxstar has to be able to use
> mplayer -identify on the stream first to determine the frame rate and it
> can't change it midstream. Boxstar can't tell the frame rate of what
> vdr-sxfe or whatever is using, so it has to use an option. Luckily most
> people receive transmissions all in the same frame rate even if they
> watch foreign DVDs or downloaded videos, so boxstar can cope with this.
>
>   
I checked boxstar web-page (http://boxstar.sourceforge.net/index.html)
and I have to say that the goal of the project is ambiguous. Hopefully
the developer can actually do it.

Br, Pasi




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