I have footage from my GoPro 3 imported into AE CS6 (PC)...
It is 720p (1280 x720) shot at what GoPro calls 120 fps.
Windows Explorer says its 119 fps in the Properties panel...
AE says its 59.94......
Also, is there any way to see the fps and other video properties in Bridge, or does video not track exif data like that--or date, time, etc?
Good morning Audo,
It never hurts to post a screen shot with your question and only takes 7 seconds.
Was the previous composition you imported shot at 59.94?
Did you fail to adjust that setting in the New Composition dialog box when you imported it?
After Effects has a maximum frame rate of 99 fps. If AE interpreted your frame rate as 120 and you played back the footage at 120 then you would have normal speed footage. In every case I've encountered in more than 40 years behind a movie camera the only reason to shoot at 120 fps is to get slow motion footage. To do that you set the playback speed of your footage.
I have a GoPro3 Black and I've shot a bunch of footage at 120 fps. I usually interpret the footage as 29.97 or 23.976 fps and put the footage in a comp that matches this frame rate. That way I get every frame playing back and motion that's much slower than normal. That's the whole reason I shot at 120 in the first place.
I've never opened GoPro footage on a Windows machine but maybe 119 FPS is the maximum frame rate your system is capable of playing back. My Mac reports the GoPro footage as 120fps but on the older Mac it only plays back at about 80 in the QuickTime player. On the newer machine it plays back at 120, but, except for the motion blur, it looks like it was shot at normal speed.
It's also important to realize that the FPS that is reported is nothing but metadata. It's just like location information, camera type, f stop. It has nothing to do with the frames except to give the software an idea of what speed to try and play back the footage. In production, especially in post production using After Effects, the important thing is getting whole frames into the composition so you can work on the pixels in that frame. Mis-matching comp and footage frame rates results in frames in the comp window that are calculated blends of one or more frames and they are usually a bit of a mess.
I hope this helps.
Of course I want to overcrank so that I can get slo-mo. Exactly.
I'm just wondering why AE incorrectly identifies the fps of the footage. It gets the other parts right--I think--1280x720, pixe aspect ratio, millions of colors, h.264 etc.
Windows 7 gives the framrate as 119 in the properties of the file, so the correct framerate IS recorded in the metadata somewhere.
Ist i just that AE CS6 can't read the metadata?
Why would it arbitrarily make one up--i.e "59.94"--which just happens to be exactly half of what it actually is?
I can't tell you why the interpreted frame rate is 59.94 in AE but if you want slow motion you'll have to change the interpretation anyway. Change it to match your comp's frame rate at any of the standard frame rates for video.
On a mac AE I think AE interprets the footage as 120 but I always change it. As I said, I have no idea why windows is displaying 59.94 but it probably has something to do with the Windows media player which AE is using to interpret the footage. 59.94 is closer to 119 fps than 59.976 is to 120. That tells me it's a Windows Media player problem not an AE one.
BTW, your screenshot is showing us the properties for the Comp not the properties for the footage. Select the .mp4 file and tell us what the footage says.
AE's footage interpretation is something you always have to keep an eye on. I'm still waiting for the day when it will interpret my AVID (from ABVB to DNxHD) files the way I exported them (upper field first) instead of lower field
Yes, I can do this at home and at certain clients but not everywhere (restrictive policies). Given that Avid codes are quite widespread and use odd fields by default it's quite hard to understand why this is not a standard setting. But I din't mean to hijack this thread but rather say that one should always doublecheck
Well, thanks anyway.
I just won't rely on AE to tell me what my footage was shot at...
But what can I use?
With still photos, I have a wealth of exif info avalable at every step of the process--LR4, Bridge...
Its seems that video doesn't get such a helping hand...
Would you mind uploading an example file someplace where I can grab it so that I can see what you're seeing? I'm guessing that the discrepancy is between a fields-per-second measurement and a frame-per-second measurement.
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