[FFmpeg-user] dv => mp4: deinterlace or not, and how?

[Tim Nicholson]

On 09/05/11 10:14, bouke wrote:
>
> ----- Original Message -----
> From: "Tim Nicholson"<tim.nicholson at bbc.co.uk>
> To: "FFmpeg user questions and RTFMs"<ffmpeg-user at ffmpeg.org>
> Sent: Monday, May 09, 2011 10:29 AM
> Subject: Re: [FFmpeg-user] dv =>  mp4: deinterlace or not, and how?
>
>
>> On 09/05/11 09:02, Bouke wrote:
>>>
>>> ---- Original Message -----
>>> From: "Tim Nicholson"<tim.nicholson at bbc.co.uk>
>>> To: "FFmpeg user questions and RTFMs"<ffmpeg-user at ffmpeg.org>
>>> Sent: Monday, May 09, 2011 9:57 AM
>>> Subject: Re: [FFmpeg-user] dv =>   mp4: deinterlace or not, and how?
>>>> [..]
>>>> But what I would really like is to go from 720p50 to 576i25 (SD) ;)
>>>
>>> Tim,
>>> You know that AE can do this?
>>> (Perhaps you don't like the downscaler in AE, but it is a handy tool to
>>> split fields to frames and vice versa, and it can be scripted)
>>>
>>[...]
>
> Ok, you want cheap, you get cheap.

Not so much that as not using a sledgehammer.

It has been pointed out to me that the tinterlace filter in mplayer can 
make a useful nutcracker in this case (with a tweaked version in ffmbc).


> Found a way with QT to do it.
 > [...]
> Pick one of the two and apply a interlaced key signal as mask.
> (One line black / white alternating)
 >...]

Now that is a goldie oldie. Somewhere I still have a field test image 
with field one lines all red and field two all blue. Great for spotting 
dominance changes but not so good for the eyes if you freeze frame 
instead of freeze field...:(

-- 
Tim

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