[mythtv-users] New deinterlacer for perfect image quality when using an interlaced display, mode that matches the source
lists at glidos.net
Fri Apr 3 18:40:46 UTC 2009
Tom Dexter wrote:
> On Mon, Mar 30, 2009 at 4:39 AM, Paul Gardiner <lists at glidos.net> wrote:
>> 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.
> It's definitely a side affect I can live with for sure...it's not even
> all that noticeable.
Turns out the changes did work. I was confused because there is still
a small amount of flicker with my OSD.
Mark Kendall has now committed the deinterlaced to trunk, and has
fixed the flashing plus another bug, so grabbing that patch might
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