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HDV 25fps to 24fps issues
I’m having some serious issues converting some HDV files shot in 25fps to 24fps. I followed the steps in this article:
https://www.macworld.com/article/49306/2006/02/marchcreate.html
(using their traditional method) and the files output have very serious interlacing artifacts, not to mention a 2GB per hour rate of output.
I tried some tests, and the best results I’ve been able to achieve involve removing the interlacing using MPEG Streamclip and then transcoding using the above process in compressor, but the results are failry pixelated at full resolution. These outputs are possibly useable but a far cry from the quality of the original 1080P HDV files. Anyone have any advice on how to approach this? Much appreciated!
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3 Replies
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Don’t know why people expect others to read an article to be able to know what they did. You need to post your steps.
But if your 25fps footage is already progressive why would you De-interlace it?
For the best quality you should not be going back into a HDV codec, use ProRes instead.
Use the ProRes preset. Set the framerate to 23.976 in the Video settings and change audio from Passthrough to Enabled. Then turn on the Frame Control, Down at the bottom there is a retiming Control.
Choose So source frames play at 23.98. They will retime the 25 and there is no interframes, the retiming is so small it will not be noticable. This should be a faster way of doing it also. -
Couldn’t you just open it in cinema tools and change the rate to 24? No processing required.
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FYI: The Cinema Tools conform option only seems to work with progressive footage, not interlaced. I have some 1080p25 footage in the Avid DNxHD codec and Cinema Tools will let me conform the file to 30, 29.97, 25, 24 or 23.98, however, it will not allow me to conform interlaced footage that is XDCAM 1080i50 at 25fps. Could be because of the codec or because it is interlaced versus progressive.
Mike Konstan
MAK Digital Media, Inc.
Orlando, Florida
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