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30p to 24p Help
Hello,
We have been working on a documentary feature for quite some time now. 98% of our footage was shot with XDCAM EX 24p. We just received some material from an outside source that is XDCAM EX 30p. We have tried to convert it to 24p, but it has a lot of stutter.Does anyone know the best way to convert the 30p footage to 24p?
Our sequence is set to XDCAM EX 1080 24p with ProRes HQ rendering.
I have done many searches and the results are slim. The information I have found is a few years old.
Thanks for any help you can provide,
JA -
23 Replies
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[Jason Aumount] “We have tried to convert it to 24p”
How?
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We have used “Export to Compressor” then in Compressor we chose a few options.
1.convert to ProRes HQ 24p
2.convert to ProRes HQ 24p reverse telecine (someone suggested)We’ve tried “Export to Quicktime Conversion” choosing ProRes 24p.
Please suggest something with a bit of an explanation. I’m not an expert at file conversions, but I know my way around the system.
Cheers,
JA -
Reverse telecine is only for footage shot at 24p to begin with. You’re trying to convert a true 30fps or 60fps into 24p. It’s a complex task. I’ve done it with a Teranex and it worked great. I hear (from Jeremy) Compressor does a good job too with the right settings. Turn on frame controls and choose best quality (motion compensated).
Sean
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[Sean ONeil] “I hear (from Jeremy) Compressor does a good job too with the right settings.”
I think it does, yes. I just did some stock footage the other day that was 720p30 and converted it to 720p24 with Compressor. It looks great, especially for the price 🙂
Jeremy
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How about going the other way? I have 24pn footage from the HVX 200 and what to use it with 30pn footage. I’ve had to downconvert the 30pn footage to SD using ProRes and keeping it progessive, which works nice. But what are the best steps for converting the 24pn footage? I’ve tried various compressor tests and get mixed results. A lot of motion blurring and steppy looking footage. Any ideas?
OS 10.5.5, Mac Pro 2 x 3 ghz quad-core intel xenon, 9 gb ram, with BM Intensity Pro card
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You need to setup Compressor properly to add the correct 3:2 pulldown. it’s possible and works well.
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WOW, that was quick. Thanks. Do you have any insight on that set up? Below are my findings.
I’ve been testing this all afternoon and actually just got pretty good results. I used ProRes, set the frame rate to 29.97 and left the frame controls off. Yeah, thats right. For some reason, with the frame controls on and using Best or Better for each, I was getting this wicked motion blur between frames. Such as hand movement. clean frame, blurry ghosted frame, clean frame. But with the frame controls off, it was clean frame after clean frame. Weird huh. The new 29.97 clip looked very close to the original 24p clip.
OS 10.5.5, Mac Pro 2 x 3 ghz quad-core intel xenon, 9 gb ram, with BM Intensity Pro card
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Jeremy, this is what I’m talking about. Picture 1 is 24p converted to 29.97 with Frame Controls on and Picture 2 is with frame controls off. PIcture 2 is much nicer. Clean frame after clean frame with no interpolated frames, if thats the right terminology. Does this make sense? And is this the correct process?
pic 1:
pic 2:
OS 10.5.5, Mac Pro 2 x 3 ghz quad-core intel xenon, 9 gb ram, with BM Intensity Pro card
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[Matt Campbell] “Does this make sense? And is this the correct process? “
why aren’t you looking at this on an OUTPUT DEVICE?
what you are seeing has to do with making a smoother image on an interlaced output, you HAVE to judge it on a interlaced television to see this image in the correct manner.
gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows for the Digitally Inclined
Chicago, ILhttps://library.creativecow.net/articles/adcock_gary/AJAIOHD.php
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Gary, I actually am looking at this on a 37″ LCD as well as FCP viewer & canvas. All the same. I’m not working with interlaced footage. Sequence settings image below. I have an SD sequence with TV spots edited in it that are being used for a case study along with footage we shot. I wanted to stay progressive, as this is not for broadcast. DVD and web only. Footage being used is 720p30PN that I downconvert to SD ProRes 29.97, no problem here. The footage in quesiton I want to use is older footage which is 720p24PN, which I convert to 29.97, previous post above. Converted 24p to 29.97 ProRes worked best with frame controls off rather than on.
Am I making sense?
OS 10.5.5, Mac Pro 2 x 3 ghz quad-core intel xenon, 9 gb ram, with BM Intensity Pro card
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