[FFmpeg-user] (de)-interlacing question

[Andy Furniss]

Toerless Eckert wrote:
> On Thu, Nov 24, 2016 at 12:36:52PM +0000, Andy Furniss wrote:
>>> Aka: Don't see anything that would indicate frame duplication,
>>> so all i can do is trust the step by step playback from vlc or
>>> mplayer.
>>
>> I can't reproduce getting ffmpeg to call 50fps or mplayer/vlc to
>> dup on framestep, though as I said mplayer gets confused.
>
> This is what i looked at:
>
> http://media.ndr.de/progressive/2016/1115/TV-20161115-0956-4700.hd.mp4
>
>  In single step in both mplayer and vlc it shows new frame only
> every second step.

Yes, that one is 50fps duped. Maybe they do it so they can switch
between 25 and 50 easily within the same file if needed.

Strange encode, though = this one has cabac but no b frames.

Whoever scaled down the high up out door shots, should really learn how
to do it properly to avoid artifacts.