EOS 5D MK II workaround: Converting 30p into 24p/25p

denverkr said:
You know that's a really good question, I don't know that I could provide a good answer for you other then I suppose the concept of speeding footage back up to a certain duration is better than converting from a higher frame rate to a lower frame rate using frame controls. Someone might have a better answer but what I can tell you is I'm achieving near perfect, if not perfect results. I stepped through the footage and there's only the slightest motion blur on moving shots/action but no more motion blur then what you expect to be there. Of course without shutter speed control you can't ensure the correct exposure timing per frame, my guess is 1/60 shutter speed should be about right, then convert to 24p should yield in essence 1/48 shutter speed, someone can correct me if I'm wrong on that, I've always understood double the shutter speed for frame rate or 180 degrees angle.

You should treat a clip of footage both ways and step through each frame, compare frame for frame and see which yields better results, I'd be very interested in your findings and I'm sure a lot of people would be as well. That way I'd know if the additional steps are necessary.


Bests,
Denver
Click to expand...


can you post a test clip?
 
will post something as soon as I can, mind you i will be treating the footage to make it look like 35mm film, meaning very very subtle, grain, dust and flicker.

bests,
denver
 
Sample

Sample

Okay here you go, here's a finished video using the steps described on the previous page. I cut all in a 30p timeline then took the final self contained video and ran it through Cinema Tools and Compressor.

http://vimeo.com/3511070

Bests,
Denver
 
Nice work, Denver. Cadence looked pretty much spot on.

Great looking piece...although the more I watch well done 5D stuff, the more I wish it had 60p, or even 60i. Smooth slowmo would be a nice option.
 
denverkr said:
Okay here you go, here's a finished video using the steps described on the previous page. I cut all in a 30p timeline then took the final self contained video and ran it through Cinema Tools and Compressor.

http://vimeo.com/3511070

Bests,
Denver
Click to expand...

That looked excellent! I loved the feel of the video, it had a great rhythm, and kept me engaged.
I also was impressed at the use of those two lenses. It really showed me how much one can accomplish with a limited prime set.

One quick question; what was your process to emulate the look of 35mm stock? I noticed your little burn marks, and I'd like to get some insight into how you applied those to your video.
 
Feedback

Feedback

Elton & bjdowns, thanks for the positive feedback. Elton you know overcranking was one of the things I sacrificed when I went with the 5D (HVX200), but I am very pleased with the small form factor (3 lbs.), sensor size and interchangeable lenses. To your question bjdowns, footage was treated with Magic Bullet Looks, I added a little grain, dust and flicker. I wanted it to be very subtle (not distracting) so I adjusted the parameters accordingly. I like that natural look you see in older movie theaters that haven't updated to the new digital cinema projection. I think the future is brighter than it's ever been for aspiring film makers wanting to acheive a motion picture look. Check out Stu's commentary on the new Panasonic GH1:

http://prolost.blogspot.com/

bests,
Denver
 
Yo guys, does it take an absurdly long time to export the footage from compressor cause I have a 1 min clip that I converted in cinema tools and it is taking about an hour (I'm exporting as ProRes 442 on the highest motion quality setting)
 
hungrych said:
Yo guys, does it take an absurdly long time to export the footage from compressor cause I have a 1 min clip that I converted in cinema tools and it is taking about an hour (I'm exporting as ProRes 442 on the highest motion quality setting)
Click to expand...

This will depend a lot on the machine you're using. This is some serious heavy lifting so if you're on an older machine it could take a really long time. It's really hard to give you a guess of how long it should take because every machine is different. If you have a quad core or 8 core, it'll need to be configured in qmaster if you want to take advantage of all the cores. But to give you a guess, I think I was able to take the finished 3 minute interview and compress/convert to 24p in about 18 minutes on an 8 core. Wish I could offer a workflow for premier, the process works with Apple because of their optical flow technology, if Adobe has something similar then it's a possibility. If Adobe has a program that can conform or in other words change the timebase without altering anything else in the clip like cinema tools then, that takes care of that aspect as well.


All the best,
Denver
 
denverkr said:
This will depend a lot on the machine you're using. This is some serious heavy lifting so if you're on an older machine it could take a really long time. It's really hard to give you a guess of how long it should take because every machine is different. If you have a quad core or 8 core, it'll need to be configured in qmaster if you want to take advantage of all the cores. But to give you a guess, I think I was able to take the finished 3 minute interview and compress/convert to 24p in about 18 minutes on an 8 core. Wish I could offer a workflow for premier, the process works with Apple because of their optical flow technology, if Adobe has something similar then it's a possibility. If Adobe has a program that can conform or in other words change the timebase without altering anything else in the clip like cinema tools then, that takes care of that aspect as well.


All the best,
Denver
Click to expand...

I do this all the time in Compressor tho Adobe Suite users can do this in After Effects. I have a 2008 3.0 8 core at work configured for this. I only have 6gb of ram, have heard that 16 is all the comp really makes use of, 32 is way overkill. I would imagine if you had a 3.0 with 16gb, things would blaze as you can use the MultiProcessors WITHOUT configuring Qmaster for Adobe. At least that's how After Effects CS3 worked for me when I rendered out scenes for a green screen video. MP support was in the Adobe AE preferences drop down menu. I must say it was a little hincky tho. Sometimes it worked fine, other times it would hang on the last frame of the render, forever, and I would just have to manually stop the render out. The file would be was usable but the process was annoying. I think there are two places in the preferences where you actually configure cache and mp support. Matter of fact I remember having to setup a script to modify an adobe setting. Sorry i don't remember the script but I got it from the Adobe site. I would suppose a google of mp setup might lead you to the Adobe KB at some point. Good luck...
 
Thanks Denver.
Really perfect. BTW 83,334% here, for a smooth 25 frames per second.

Big downside...
20 min. (8 core) or 35 min. (recent macbook pro) for a 22 sec. clip!
 
if i record the audio directly with the 5d&external mic, and convert the material without the audio to 24p, like shown here, the video gets slower am i right?
But if i relink the old audio with the 24 material, wouldn't it be out of sync then?
i mean wouldn't get the audio longer than than the video?

sounds dumb, but im still not shure about my next purchase (5d??)XD

Thanx
 
Greetings,

Sorry if this post sounds redundant. I recently took over a project that has been shot at 30p (including interviews and plenty of lip-sync scenes). Final client needs a 25p output. How does the sound come out after converting from 30p to 25p through Twixtor??? Any suggestions would be greatly appreciated! Thanks.
 
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