[mythtv-users] hardware questions for HD to SD playback

[Johnny]

> Completely incorrect..
>
> As far as the TV is concerned, the only thing that matter is what your
> video card output, nothing to do with having a deinterlacer set up in
> mythtv (with vdpau or other).
>
> You could run a deinterlacer, yet the signal output to the TV is still
> interlaced.
>
> if you don't run a deinterlacer , yet your video card output a
> progressive signal, this all the TV will see: a progressive signal
>

Thanks for the clarification. When I said sending to an "interlaced
display" I was implying that the driver was configured to be sending
an interlaced output. Since he has an SD I assumed he would be using
something like TVStandard NTSC-M, which as you pointed out probably
isn't a good assumption to make. Thanks for the clarification.

>> case as far as processor/GPU power is concerned. Some people have some
>
> When it comes to vdpau, the only thing differentiating a video card
> from another is what deinterlacing option they are able to provide.
>
> So stating not to worry about it is really off the mark.
>
> This has been discussed a hundred times here previously as to what
> video cards can do what. There's even an active thread today talking
> about what nvidia card can do what.


Sorry I thought it was clear. I was answering his question, " What
about interlacing? Is this process just as processor-intensive as
de-interlacing?" And the answer is no you don't need to worry about
the processing power required to send an interlaced signal with no
deinterlacing applied. I was not saying he didn't need to worry about
processing power when looking at VDPAU deinterlacing. He already
stated that he was aware of the fact there was a distinction between
deinterlacing capability of the various VDPAU cards. I was only
speaking directly to his question about whether VDPAU or CPU/GPU power
was required for purely interlaced signals with no deinterlacing
involved.