Kevin Camp
Forum Replies Created
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you’ll probably run into the same problems with avi and wmv if you use a codec that uses interframe compression (like any of the dv codecs and many others). the capture device that you use probably has a native codec that will capture without interframe compression, possibly without compression at all.
i use a decklink card to capture to blackmagic’s 10-bit uncompressed codec and it works great with ae and i don’t need to convert it to anything. it puts the file in a quicktime wrapper (.mov), so the format (or wrapper) isn’t the problem.
Kevin Camp
Designer – KCPQ, KMYQ & KRCW -
i assume you are using timewarp… and may have seen andrew kramer’s tutorial…?
i think you are running into problems because you are trying to generate more new frames than you have actual frames. there is always going to be a posibility of misinterpolated frames that are created between to actual frames. but in your case you are trying to have interpolated frames created from other interpolated frames, and the chance of error is much greater.
i don’t know if the mistake was yours or not… but if you will need to do this again, i would shoot at 1080i… it would be a lot easier to get 1080i to 720p60. you’ll already have 60 fields per second, so if you interpret fields correctly in interpret footage, click preserve edges and drop it into a 720p60 comp and hit fit to comp, you’ll have 720p60 in just a few seconds of work and be ready to render.
Kevin Camp
Designer – KCPQ, KMYQ & KRCW -
one other thing, are you using spacebar to render the preview or the zero on the #s keypad?
use the zero on the #s keypad, it will create a ram preview… space bar will render the preview on to your disk, and if your disk can’t handle the data rate of the preview then it will play slowly or jerky.
Kevin Camp
Designer – KCPQ, KMYQ & KRCW -
i’ve had that happen too, i ended up just living with it (i may have reduced the shutter angle to minimize the effect).
depending on your cube move, you may be able to fake motion blur with the motion blur effect. echo (and potentially frame blending) could give you multiple frames as the cube rotates to blend together. combine that with a bit of a directional blur to soften the edges and that might work.
reelsmart motion blur from re:vision would help too.
Kevin Camp
Designer – KCPQ, KMYQ & KRCW -
also, have you installed or updated anything recently?
Kevin Camp
Designer – KCPQ, KMYQ & KRCW -
spacebar will render the preview to disk rather than ram. if you have a fast enough drive setup, i guess it’s just as good as a ram preview. although most of us prefer ram previews. the only advantage i can think of is if you like your preview, it saves you trouble of saving the render, it’s already saved, you just need to name it.
one other advantage might be that you probably have more disk space than ram, so you can preview a longer (or larger/higher frame rate) comp. but, again, i prefer ram previews over fragmented disk space.
Kevin Camp
Designer – KCPQ, KMYQ & KRCW -
you should be able to get a reference movie from pp to ae or possibly bring in the pp project in ae, and avoid the giant uncompressed file that you will get by exporting out of pp. the minidv media will be a little more difficult to work with in ae, but you’re not going to lose quality, since the reference movie will not be rendering any footage (unless you have effects in pp that require rendering). check the help menu in pp, it should lay out a workflow with ae.
i know you can export an ae project to premiere without rendering, again, check the help menu in ae for details (and possible limitations).
being able to bring the pp project into ae directly may make your color correcting easier, but it will still be a lot of work if you need to correct every shot. and i think i would create individual color adjustment effects for each shot, rather than changing the values of a single effect at every cut.
Kevin Camp
Designer – KCPQ, KMYQ & KRCW -
if you haven’t tried it already, you might try turning off opengl… it can seemingly add to a general quirkiness in previews, plus in 6.5 opengl doesn’t support many key features that you would like to have. most people ditch opengl in favor of adaptive resolution. i’ve seen significant slow downs with opengl with certain effects (auto levels, being one).
however, that may not be the problem… check your time controls panel, make sure the ram preview options are set to the correct frame rate (auto should keep play back at your comp’s frame rate). also make sure that it is not set to skip farmes.
also, check your comp settings and make sure that it is a the frame rate that you want to work at.
Kevin Camp
Designer – KCPQ, KMYQ & KRCW -
i think you’ll want to use an intermedate codec that doesn’t use interframe compression to go between ae and pp… i don’t think hdv can be set to not use interframe compression.
you’d hate to use another lossy codec, so i would try to use lossless animation, but it will eat up a lot more disk space. an image sequence would work well too. if you had to conserve disk space, photo jpeg might be a decent lossy codec to look at.
Kevin Camp
Designer – KCPQ, KMYQ & KRCW -
as dave mentioned you can set the preview to skip ‘x’ frames fromt he time controls window to lengthen your ram preview even further.
if you limit your work area as dave mentioned, make sure you expand it back to the full length needed before render, or change the render setting for time span to length of comp, otherwise you will only render your defined workarea.
Kevin Camp
Designer – KCPQ, KMYQ & KRCW