[HELP] "Real" PAL<>NTSC framerate conversion with speed changing?

[DannyHicks]

Btw. the step-by-step should still be correct, in case your didn't skip any part (or change the order) the 'add the current audio settings for the current audio track to the Audio-Queue (Audio->Base->Add current)'-step should make sure you got audio,...

What thing with the video?
I mean if you keep all frames and increase the length each frame is shown the playback length increases.
If you keep all frames and reduce the length each frame is shown the playback length decreases.
Since:
'play length in seconds' = 'frame count' / 'frames per second'
which is the same as
'play length in seconds' = 'frame count' * 'length each frame is shown'
that is the logical impact that happen if you do PAL<>NTSC conversions via speed change.

Assuming the frame count is the same, when:
- you increase the speed the playback length should decrease
and
- if you decrease the playback speed the playback length your increase.
So when you go from 25fps to 23,967fps and thus decrease the speed the playback length should increase by 25/23,976 = 1,042709376042709 which is nowhere near what you describe.

Only thing that confuses me is that it sounds like you reduced the playback speed and your playback length changed from 24min to 30 min, which would mean it increased by 30/24, so your original fps should have been 23,976*30/24 which is roughly 29,976 not 25, thus your video wouldn't be PAL, but NTSC and your are misusing the guide to do a slow down from 29,9 to 23,976.

Normally a PAL <> NTSC conversion is between 25 and 23,976 fps. You are doing a NTSC 29,97 to NTSC to 23,97 conversion,...

Using audio passthrough is the wrong move, audio needs to be reencoded since it's speed needs to be changed otherwise the output will be asynch, since the audio and video length to not match anymore.

Cu Selur

I thought we were already done with PAL <> NTSC, because I followed your steps and got 23.976 <> 25 FPS conversions working.

The other problem was the whole inverse telecine thing and getting 29.97 FPS (NTSC) videos converted to 23.976 FPS (NTSC), in order to speed them up to 25 FPS (PAL).

Sorry for the confusion.