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View Full Version : 720p24 telecined to 720p24, how to play and/or edit?


wozio
12th November 2007, 11:15
Hi,

I have film source 720p24 recorded from tv broadcast where it is telecined to 720p60. Doing frame by frame stepping it is clearly visible that frames are repeated in aabbb sequence. I want to play it to have original 24 fps for best display on 48 Hz tv.

Is it possible at all without editing and/or recompressing? VMR9 doesn't process at all since it is progressive source while pulldown is only possible for interlaced source afaik.

If not then what is the best method of removing not needed frames?

Regards
Piotr

Adub
12th November 2007, 12:32
I am pretty sure you can do a basic decimation with a filter such as TDecimate.

Guest
12th November 2007, 16:11
SelectEven()
Decimate(5)

And don't ask "what's best". It violates our forum rule 12.

wozio
13th November 2007, 09:00
Yes, but this basically decodes video, then removes not needed frames and must be reencoded to have playable file at 23.976, right? Is it possible to just remove not needed frames WITHOUT reencoding? I don't want to play via avisynth.

Guest
13th November 2007, 14:36
You can't decimate an MPEG2 stream without re-encoding. Maybe a player could drop frames during playback, but your source file would not be altered.

Atak_Snajpera
22nd November 2007, 12:25
I don't want to play via avisynth.
Why you so afraid of using avisynth?

http://forum.doom9.org/showthread.php?p=1067566#post1067566

wozio
23rd November 2007, 07:45
I'm not afraid, this is great method for haing original p24 but I was just looking for method to edit original file, just remove not needed frames without reencoding, to have smaller file.

Shinigami-Sama
24th November 2007, 01:26
I'm not afraid, this is great method for haing original p24 but I was just looking for method to edit original file, just remove not needed frames without reencoding, to have smaller file.

You can't decimate an MPEG2 stream without re-encoding. Maybe a player could drop frames during playback, but your source file would not be altered.

so in other words
it can't be done the way you want it to be done

wozio
24th November 2007, 10:31
Now I know that :)

After some thinking I assume that it wouldn't reduce much file size anyway. I assume that these extra frames are encoded with almost zero bitrate since they are the same.