[mythtv-users] New deinterlacer for perfect image quality when using an interlaced display, mode that matches the source

[Paul Gardiner]

Paul Gardiner wrote:
> Tom Dexter wrote:
>> I noticed some flickering of translucent portions of the OSD (the
>> playback menu for example) while this deinterlacer was in use (unless
>> video is paused).  On 720p stations where it gets disabled this
>> doesn't occur at all.
> 
> I think I've just sussed what is causing this. The deinterlacer gets
> given each frame twice. Each time it overwrites the bottom field,
> but leaves the top field unchanged. After each call the OSD will
> be rendered over the frame. The fact that I don't update the
> top field in the second call to the deinterlacer means the OSD gets
> rendered over the top of a previous rendering. That doesn't matter
> for a solid OSD, but if translucent the top field will be
> darker than the bottom.
> 
> Should be easy to fix:

...

Hmmm, so much for that idea! Doesn't seem to make any difference.

P.