Resizing footage with 3:2 pattern

[discofever]

Hi all.

I have footage that's originally 24fps, but is currently in 29.92fps. I know how to speed it up, but it's 4:3LB, which I want to resize to 16:9FHA.

I'm not sure how to do this, as if I crop and resize, I'll get blended frames, and I'm not sure how to resize without it happening.

Can someone point me in the right direction?

Dave

[neuron2]

If it is 3:2 pulled down, then apply IVTC, then resize, then pull it back down to 29.97 if you need to.

If not 3:2 pulled down, what is it?

What is the format of your input file?

[discofever]

Format is an uncompressed AVI. It came off an NTSC digibeta tape and was captured at 29.97FPS. It has the repeating pattern, and it needs to end up at 25fps once resized.

[neuron2]

Format is an uncompressed AVI. It came off an NTSC digibeta tape and was captured at 29.97FPS. It has the repeating pattern, and it needs to end up at 25fps once resized. What repeating pattern? You mean 3:2 pulldown?

If so, then IVTC it with Telecide/Decimate or TFM/TDecimate to return it to the film rate of 23.976. Then resize it.

AVISource("yourfile.avi")
Telecide()
Decimate()
LanczosResize(720,576) # or as needed

Now to get 25 fps, it depends on what your desired output format is. What is it? PAL DVD? AVI? ...

[discofever]

What repeating pattern? You mean 3:2 pulldown?

If so, then IVTC it with Telecide/Decimate or TFM/TDecimate to return it to the film rate of 23.976. Then resize it.

AVISource("yourfile.avi")
Telecide()
Decimate()
LanczosResize(720,576) # or as needed

Now to get 25 fps, it depends on what your desired output format is. What is it? PAL DVD? AVI? ...

Yeah, 3:2 pulldown. (I apologise, I'm not very up with the technical terms. We tend to call it whatever fits around here, which makes it a pain to explain to someone else)

I didn't think about IVTCing it. Once it's there, it's a simple resize, then I can use either CinemaCraft itself, or I have a speedup script that someone wrote which works really well.

Either way, it'll end up as a PAL DVD.
Thanks for your help neuron!

[neuron2]

If you're making a PAL DVD, consider using DGPulldown with the 23.976->25 conversion. That will allow you to keep the audio untouched, encode progressively, and maximize the quality for a given bitrate.

[discofever]

Ah thanks. I'll keep that in mind.

For audio we use Wavelab most of the time to handle speed ups, but I'll look into DGPulldown.