[mythtv] Incessant flip/flop of deinterlacer in svn

[Tom Dexter]

On Sat, Oct 17, 2009 at 6:09 PM, Jean-Yves Avenard <jyavenard at gmail.com> wrote:
> Hi
>
> 2009/10/18 Tom Dexter <digitalaudiorock at gmail.com>:
>> If I'm interpreting that patch correctly, it will still switch to
>> progressive if it sees four or more progressive frames after any
>> interlaced frames.  The verbose message it generates says "Locking
>> scan to Interlaced", but it appears that, after it does that, four
>> progressive frames will in fact cause it to switch.
>>
>> Am I reading that correctly?  Has anyone verified that this sufficient
>> to prevent the constant switching for (for example) NBCs dramas that
>> tend to do this?  I'm using the new field order deinterlacer which is
>> unusable if this switching occurs.
>>
>
> I'm seeing the same problem on a DVD here "Deep Impact"
>
> 2009-10-18 00:45:58.624 VDPAU: Updating CSC matrix for ITU BT.601 (PC levels)
> 2009-10-18 00:45:58.624 Disabled deinterlacing
> 2009-10-18 00:45:58.656 NVP(0): interlaced frame seen after 1 progressive frames
> 2009-10-18 00:45:58.657 VDPAU: Updating CSC matrix for ITU BT.601 (PC levels)
> 2009-10-18 00:45:58.657 Enabled deinterlacing
> 2009-10-18 00:45:58.673 NVP(0): progressive frame seen after 3
> interlaced  frames
> 2009-10-18 00:45:58.674 VDPAU: Updating CSC matrix for ITU BT.601 (PC levels)
> 2009-10-18 00:45:58.674 Disabled deinterlacing
> 2009-10-18 00:45:58.707 NVP(0): interlaced frame seen after 1 progressive frames
> 2009-10-18 00:45:58.707 VDPAU: Updating CSC matrix for ITU BT.601 (PC levels)
> 2009-10-18 00:45:58.707 Enabled deinterlacing
>
> And so one, sound is good but video seems to be playing at twice the speed...

That's a bit of a different situation however, as the patch expressly
has no affect on dvd playback (note the if
(!player_ctx->buffer->isDVD()) condition).

Tom