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Framerate question (29.97 to 23.98)
I know that this issue has been covered ad nauseum on the site, but I’ve swam through so much of it at this point that I’m exactly that: nauseous.
Here’s my issue. I’ve got a lot of 23.98 footage (shot on a Canon 5D and converted into ProRes 422 at 1920×1080). This is the bulk of my material and so I’m trying to keep it as pristine as possible. I’ve also got a lot of footage from various sources that runs at 29.97. This stuff is like home videos ripped from DVDs and pulled from consumer cameras and off various places along the way. I’d like to integrate these as seamlessly as possible while keeping the footage I shot looking as good as it can.
What’s the best practice for doing this kind of thing? I gather that it’s not really wise to simply drop the 29.97 footage into a 23.98 timeline, but I’m loathe to lose my 23.98 footage to a 29.97 timeline. Any thoughts?
(I also have some footage that’s been at 59.97, but I suppose that’s a question for a followup.)
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12 Replies
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Use Compressor to convert the frame rate…and the footage to ProRes. Use the FRAME CONTROLS in the INSPECTOR to set everything to BEST. And then wait hours for it to complete.
Obviously deinterlace it at the same time.
Shane
Little Frog Post
Read my blog, Little Frog in High Def -
How can we desinterlace?
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Thanks, Shane. Followup: if i’m going to convert the 29.97 stuff to 23.98, should I select the option to set the duration 100% of the source file or “so source frames play at 23.98”?
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It’s an option in the FRAME CONTROLS in the INSPECTOR.
Shane
Little Frog Post
Read my blog, Little Frog in High Def -
[Woody Brubaker] “f i’m going to convert the 29.97 stuff to 23.98, should I select the option to set the duration 100% of the source file or “so source frames play at 23.98″?”
Yes. That should be the default setting anyway…leave it.
Shane
Little Frog Post
Read my blog, Little Frog in High Def -
Thanks, Shane. As it actually turns out, I have as much 29.97 footage as I have 23.98 footage and most of the 23.98 stuff is just talking heads/not a lot of action in them. Is there a reason I shouldn’t (beyond preference) convert the 23.98 to 29.97? It seems like I could go either way…
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All depends on your deliverables. What frame rate will you be delivering? And will it be interlaced or progressive.
Converting 23.98 to 29.97 interlaced looks really good. 23.98 to 29.97 progressive? Looks bad.
Shane
Little Frog Post
Read my blog, Little Frog in High Def -
Going to the web with this stuff, though we’re intending that it might one day make its way onto a DVD or something else (clients have high hopes someone might be interested in using it on TV someday). Thoughts?
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Go 23.98. Web loves Progressive, hates interlaced.
Shane
Little Frog Post
Read my blog, Little Frog in High Def -
[Shane Ross] “Go 23.98. Web loves Progressive, hates interlaced.”
The only way that 23.98 converted to 29.97 looks any good is 2:3 interlaced, and a web compression will take this away.
And besides, 6 fewer frames/sec reduces the file size and bitrate.
jPo
“I always pass on free advice — its never of any use to me” Oscar Wilde.
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