Vapoursynth/Hybrid 24P Pull down from DVX100b. HELP DESPERATELY NEEDED!

[amanwithamoviecamera]

Hi all!

Made an account after years of lurking in desperate need of help. I've directed a music video and I'm getting round to finishing the edit, however we shot some extra material on my old Panasonic DVX100B. I shot in 24p mode and captured the raw .dv file. I've used Hybrid/Vapoursynth before for deinterlacing 60i to 60p, but I'm seriously hitting a brickwall trying to do a 24p pulldown.

Hybrid constantly crashes, and all my other ideas of getting this to work have failed. From rewrapping the .dv file to .avi so I can put the footage into Premiere and use it's 24p Pulldown. I also tried simply deinterlacing the footage to 29.97p but that ended up with stuttery footage.

If anyone has done this workflow before with 24p NTSC DV footage in Hybrid/Vapoursynth and could inform me how to do it, that'd be greatly appreciated. If it works smoothly as well, I may even credit you in the music video.

Many thanks!

B

[jagabo]

AviSynth can open raw DV files using the LSMASH or ffmpeg source filters. It can also IVTC back to 24p. Something like this should work:

LWlibavVideoSource("filename.dv")
TFM() # field matching
TDecimate() # remove the duplicate

You can try using ffmpeg to remux to an AVI.

If you supply a small sample I can verify the above tools will work for you.

[amanwithamoviecamera]

AviSynth can open raw DV files using the LSMASH or ffmpeg source filters. It can also IVTC back to 24p. Something like this should work:

LWlibavVideoSource("filename.dv")
TFM() # field matching
TDecimate() # remove the duplicate

You can try using ffmpeg to remux to an AVI.

If you supply a small sample I can verify the above tools will work for you.

Here is a link to a short clip we shot: https://drive.google.com/file/d/1x_MEXYqrGtsNB_ctergUwTPmLnh-SRTE/view?usp=sharing

[rgr]

Hi all!

Made an account after years of lurking in desperate need of help. I've directed a music video and I'm getting round to finishing the edit, however we shot some extra material on my old Panasonic DVX100B. I shot in 24p mode and captured the raw .dv file. I've used Hybrid/Vapoursynth before for deinterlacing 60i to 60p, but I'm seriously hitting a brickwall trying to do a 24p pulldown.

Hybrid constantly crashes, and all my other ideas of getting this to work have failed. From rewrapping the .dv file to .avi so I can put the footage into Premiere and use it's 24p Pulldown. I also tried simply deinterlacing the footage to 29.97p but that ended up with stuttery footage.

If anyone has done this workflow before with 24p NTSC DV footage in Hybrid/Vapoursynth and could inform me how to do it, that'd be greatly appreciated. If it works smoothly as well, I may even credit you in the music video.

Many thanks!

B

I don't quite understand.
You have 24p footage from a Panasonic camera.
You also have other 60p footage (deinterlaced from 60i).
Do you want to combine them and get 24p (i.e., convert the 60p footage to 24p)?

[_Al_]

Those DV camcorders recorded 24p as 60i, so it could be captured from that tape. So as jagabo put down he needs to get 60i back to 24p. He did not put down actual vapoursynth script to just look if that was doing a right thing.

[jagabo]

There appears to be something wrong with the time codes. A remux with VirtualDub2 appears to fix it. In VirtualDub:

1) File -> Open Video File, select the dv file and open it
2) Video -> Direct Stream Copy
3) File -> Save Video, make sure type is AVI, change to a new name, Save

That gives the following:

[_Al_]

I tried vapoursynth (pretty old version though, R62, Hybrid uses most likely latest versions),
both videos , original dv upload or jagabo stream copy verison:

import vapoursynth as vs
from vapoursynth import core
#clip = core.ffms2.Source(r"E:\vid\remux.avi")
clip = core.ffms2.Source(r"E:\vid\Leaving the house Vidi 2026-05-22 14-08-49.dv")
#print(clip)
clip = core.tivtc.TFM(clip, order=0)
clip = core.tivtc.TDecimate(clip)
clip.set_output()
#print(clip)

both returned:
VideoNode
Format: YUV411P8
Width: 720
Height: 480
Num Frames: 628
FPS: 24000/1001

[Selur]

Hybrid constantly crashes, and all my other ideas of getting this to work have failed

Without proper details, I can only report using TIVTC in Hybrid with that source works fine here. (even with latest dev)


Cu Selur

[jagabo]

AviSynth can open the "bad" file from post #3. But it has some problems. LWlibavVideoSource() see's it as 600 fps so you have to AsumeFPS(30000,1001).

a = LWLibavAudioSource("Leaving the house Vidi 2026-05-22 14-08-49.dv") 
v = LWLibavVideoSource("Leaving the house Vidi 2026-05-22 14-08-49.dv", format="YUY2").AssumeFPS(30000,1001)
AudioDub(v,a)
TFM()
TDecimate()

ffVideoSource() sees it at the proper frame rate but locks up if you scrub around too much.

a = ffAudioSource("Leaving the house Vidi 2026-05-22 14-08-49.dv") 
v = ffVideoSource("Leaving the house Vidi 2026-05-22 14-08-49.dv", colorspace="YUY2")
AudioDub(v,a)
TFM()
TDecimate()

The above scripts work if you just encode from start to end.

[rgr]

Use BSSource, everything works.

[rgr]

AviSynth can open raw DV files using the LSMASH or ffmpeg source filters. It can also IVTC back to 24p. Something like this should work:

LWlibavVideoSource("filename.dv")
TFM() # field matching
TDecimate() # remove the duplicate

You can try using ffmpeg to remux to an AVI.

If you supply a small sample I can verify the above tools will work for you.

Here is a link to a short clip we shot: https://drive.google.com/file/d/1x_MEXYqrGtsNB_ctergUwTPmLnh-SRTE/view?usp=sharing

Maybe this version will suit you better.