[vdr] PVRINPUT plugin and "black/cinema bars"
rob at davis-family.info
Mon Apr 26 22:56:10 CEST 2010
> On Mon, Apr 26, 2010 at 12:42 PM, Martin Dauskardt <md001 at gmx.de> wrote:
>> The mpeg is not delivered by the broadcaster, it is generated by the
>> The content of the header is a result of the V4L2_CID_MPEG_VIDEO_ASPECT
>> setting done by the application.
> If the aspect ratio flag is unreliable, again, you can always just use
> the resolution and calculate it.
>>> You _could_ write some functions to detect and remove letterboxing,
>>> though I don't know anyone motivated enough to actually do it.
>> The main goal of the pvrinput-plugin is to use the hardware encoder.I
>> think it
>> is a bad idea to do software-based on-the-fly-recoding.
> If you want to limit the plugin to using only the hardware then I
> agree. However, if you want to provide capabilities beyond what the
> hardware is capable of then software is the only other place to do it.
> This is perfectly fine, although it probably means the user wasted
> his money on a hardware decoder if he's just going to do software
> decoding anyways. It doesn't hurt to put more consideration into what
> you want/need before pouring money into hardware. I know guys that
> threw a lot of money at hardware decoders only to replace them with
> cheap vdpau-capable video cards. To each his own I suppose. :)
Except this is an input device, not an output device. It converts an
analogue signal to mpeg2, as such, it needs to make guesses about what
it's going to find..
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