View Full Version : how to decimate 59 frames to 23?
kayman
10th February 2003, 02:19
im new to HDTV just found out i could do it after havinh the gear for the longest time , anyway i do i decimate a 60 fps files down to 23.976 using decmob ive usually only worked with 29.97
hehe
thanks
kayman
trbarry
10th February 2003, 13:15
I've had good results with Avisynth using:
SelectEven()
decimate(cycle=5)
- Tom
OUTPinged_
27th February 2003, 11:05
mm... That method is still throwing one field away.
Is it possible to stil have both fields (ie capping from broadcasts which have native 60fps framerate) and still do a quick decimate?
trbarry
27th February 2003, 19:24
I always thought that if I did not do a SeparateFields first that SelectEven would take even frames, not even fields.
Am I wrong about this?
- Tom
Xesdeeni
27th February 2003, 22:56
I've been playing with some transport streams from Super Bowl advertisements and converting them to DVD.
For the ads that were 23.976 Fps, telecined to 59.94 Fps (the movie ads), I used:SelectEvery(5, 0, 3)
LanczosResize(720,480)after checking the repeat pattern with VirtualDub (4 of the 5 possible combinations work if the sequence doesn't change).
For the ad that was actually 59.94 Fps (ESPN_HD), I used:LanczosResize(720,480)
SeparateFields()
SelectEvery(4,1,2)
Weave()
Xesdeeni
OUTPinged_
7th March 2003, 15:08
@trbarry: my mistake. Missed the absence of SeparateFields().
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