View Full Version : Stutter / jitters whilst panning
Tomeu Santandreu September 15th, 2009, 11:57 PM Hi Jon.
I have looked at the footage frame per frame, everything seems to be OK. I have trascoded the footage to a PAL MPEG2 DVD and everything is fluid and smooth! Its not the footage itself, its the player!
The settings for transcoding:
1. Premiere pro CS4:
Timeline 25 fps, 5D original footage interpreted as 25 fps, exported as 'avi' without compression 25p.
2. Canopus procoder 3 for encoding the DVD.
Chris, the video wasn't recorded with the rubber bank trick (Manfrotto 501 HDV), but I have tried it and its fine!
You can see the video al this link, its my first one, sorry for the aliasing:
http://www.serraicostes.com/video/VillagesVideo.html
You can download the f4v source form here:
http://www.serraicostes.com/video/MartiBibiloni.f4v
Tome Santandreu
Serra i Costes - Fotografia Mallorca (http://www.serraicostes.com)
Shaun R Walker September 25th, 2009, 08:06 AM I don't have a 5D and I have never shot with one, but I have just spent a week and a half editing footage shot in Fiji on one. I didn't notice any juddering at all in any of the footage, and the footage was shot in all types of situations - helicopter aerials, fast pans, hand-held, slow pans, low light etc. My workflow for this job was to conform from 30p to 25p using Cinema Tools, then convert the conformed files from H.264 to XDCAM 1080p (35Mb/s VBR). I had no issues whatsoever with the footage after that, and everything looked great
Adrinn Chellton September 25th, 2009, 03:20 PM This is interesting, I have seen this in quite a few 5dMII clips now and I wonder if this is an additional reason for Canon to move to dual processors in the 7d. It really seems to me to be an issue of the processor/RAM buffer system. The frame could be changing too much for it to keep up while encoding. If the camera was designed with very little margin of error then some cameras could have a harder time than others.
Eric Darling September 25th, 2009, 03:30 PM Where were those clips you saw? Were they native H.264 directly out of the camera on a beefy computer, or were you watching them played back on Vimeo or some such Internet video service site? It's an important question because as a 5D Mk II owner/operator, I have never seen this behavior once in any of my footage - handheld, dolly, tripod, car mount, or otherwise.
This problem is either the product of a defective camera or a defective re-encode/playback on the web.
There are other issues with the camera, but judder/skipped frames is not something you should blame on the camera. Perhaps bad/slow media?
Daniel Kohl September 26th, 2009, 02:20 PM My workflow for this job was to conform from 30p to 25p using Cinema Tools, then convert the conformed files from H.264 to XDCAM 1080p (35Mb/s VBR). I had no issues whatsoever with the footage after that, and everything looked great
Hi,
I would like to confirm Shaun's workflow. I did some tests to specifically recreate the problems described in this thread. I had pans and tilts with apparent frames being left out.
Conforming from 30p to 25p using Cinema Tools has smoothed all the footage. A motion effect of +120% in FCP will get the audio back to its normal pitch as well. Unfortunately after doing that, it will need to be rendered. (transcoding to XDCAM 1080p - takes time too). Getting the footage into a usable state will take cooking time, but I think that it is well worth it.
Cheers,
DK
Andrew Clark December 8th, 2009, 06:57 PM I'm thinking of sending my camera back and demanding a new model seeing as I have gone through canon repair route, or is this a common fault on all 5D2's that has gone largely unnoticed? I don't believe this for a minute. Will canon replace my body- now that's the question
** Daniel, did you get another / replacement camera from Canon? And if so, is the "stutter" problem gone?
Andrew Clark December 8th, 2009, 07:08 PM This problem is either the product of a defective camera or a defective re-encode/playback on the web.
** Defective camera....yes, a definite possiblity.
There are other issues with the camera, but judder/skipped frames is not something you should blame on the camera. Perhaps bad/slow media?
** If it is seen on the LCD screen and the CF card, it's the camera.
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