1920/1080 25p to 1920/1080 24p

Just thought I would share the results of converting (PAL) 1920/1080 25p to 1920/1080 24p for NTSC Blu-Ray.

After trying many different ways with commercial encoders, all ended up just basically frame blending to get the end result or there would be frame judder as it played.

I then for fun ran the 25p PAL file through a little FREE open source program called "Virtual Dub" and the end results are very good indeed.

Its very fast too and on my old PC here it nearly was real time.

Your audio is out of wack and it will need to be tweaked to fit in again but the 25p to 24p is wonderful.

All I did was place the files back in a 24p timeline, ungroup the Audio and Video then set the audio speed at 96% and it all lined up again.

Virtual dub only runs on Windows

I don't quite understand what you've done there Wags. Have you slowed the video down to get from 25p to 24p, or have you actually resampled by interpolating frames?

Why can't you just conform the clip to 24fps? It's almost instantaneous.

It looks like it slows each frame duration down 4% to get the 24p.

Then I had to slow the audio down 4% to match in the 24p timeline.

It plays smooth as.

Yeah, but conforming would do all that and is almost instantaneous and easy to do. Why bother jump through several programs?

Because it's a one off thing and I want to edit multi format native video files in real time at full resolution without having to transcode everything into huge files and ending up having double files of everything

Errrr there's no transcoding? You just edit your 25p and then conform to 24p. Only a 3% drop in pitch, which can easily be fixed.