[mythtv-users] Asus Pundit and Interlaced Output, part III :)

[Isaac Richards]

On Monday 23 June 2003 09:27 pm, Craig Longman wrote:
> > Will Dormann wrote:
> > A PVR250 system does indeed allow you to deinterlace the TV output.
> > True, the capture is done via hardware, but once that's done you've
> > got an interlaced MPEG2 file.   Playback is done totally by software,
> > just as it is with RTJPEG and MPEG-4.    (well, maybe playback isn't
> > done in the exact same method, but it is software playback).   So if
> > the Deinterlace playback option is enabled in MythTV, then it does
> > deinterlace the video.
>
> the stream may be interlaced deep inside libavcodec, but if you look at
> the mythtv code, the only places deinterlacing is referred to is in the
> recording side of things, as far as i can tell.  and if you look at the
> mpegrecorder.cpp, you will find the ChangeDeinterlacer() stubbed out.
>  it makes sense to deinterlace it while you're recording if you can, i
> think.  then it only needs to get done once.  unfortunately though, this
> excludes the hardware encoders.

The only time it deinterlaces anything is on playback if the 'Deinterlace 
playback' setting is selected.  

Isaac