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

[Will Dormann]

At 09:52 PM 6/23/2003 -0400, you wrote:
>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.  


yes, this is the option that I currently have enabled.   And there is a
significant difference with it, so it *is* doing something.   When enabled,
there are no interlacing effects visible.      This is when I'm playing my
PVR-250 encoded MPEG2 video.

-WD