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Yet Another Choppy Playback question
Hi there,
Trying to resolve a playback issue on one of my larger projects. I am cutting a 22min show for delivery in 59.94. The footage I’m working with is in all different formats, but mainly it’s large line cut files in 29.97.
I’ve opted to edit in a 59.94 sequence rather than convert a native sequence as I wanted to avoid conversion/conform issues later.
Issues got exponentially worse when I started placing motion graphics renders (lower thirds) in my sequence. I’m rendering graphics Lossless w/Alpha from AE, but premiere is clunking through these even though it’s only on top of a single video layer.
I’ve tried clearing my Media cache (20GB!), restarting both CS6 and my entire system and no luck. Rendering the entire work area gives me smooth playback, but this is not an option since I have to lay in a ton of graphics and I can’t rerender every time I have to change a placement.
Thanks so much for your time, any help appreciated!
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2.3GHz Intel Core i7 Macbook Pro
16GB 1600 MHz RAM
OSX 10.7.5 -
4 Replies
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Read this if you have the 650M gpu with at least a gig of RAM (no luck if you’re like me and have the 512mb model) https://blogs.adobe.com/kevinmonahan/2013/09/13/enabling-cuda-for-the-mercury-playback-engine-in-the-macbook-pro-retina/
You might have near the same model of MBP that I do, and I have the nVidia 650M GPU (some don’t and will have integrated graphics).
Open up your activity monitor and check it out while doing playback. I would make sure that you’re not pegging hard drive activity.
If the bottleneck isn’t disk speed, and I don’t think it is if it’s just one layer of video, then I bet it’s mostly the interlacing on the fly. This is where mercury hardware comes in handy.
In terms of your motion graphics, try ProRes4444, but as soon as Premiere hits another layer it usually clunks for me on my laptop as well if I don’t render.
Honestly, if you are having issues, I would take 1 or 2 overnights and convert your video to ProRes at 59.94 and work with them as an intermediate codec – at least you also get the benefit of smart rendering in the timeline as well https://blogs.adobe.com/kevinmonahan/2012/10/11/smart-rendering-in-premiere-pro-cs6-6-0-1-and-later/
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If you’re using CS6 and Quicktime, realize that you’re still using Quicktime in a 32bit environment. We do a good job of playing back QT regardless, but If you’re having a bunch of performance issues, one thing would be to test another format for your graphics and see if that helps you any.
Dennis – Adobe guy
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Hmmmm–thanks for the help folks. Tried re-rendering graphics and a couple other troubleshooting steps, but it seems that where my playback was unbearably choppy was when I layed in a .png file. Over a layer of video it was unplayable–but when I removed it, presto I had useable playback. Not sure why a .png would do this to a timeline (I did have to scale it down around 75%), but I may replace the file with one that’s more accurate to my video size? Will post back if playback issues continue with other files…
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Do you have a tab on your workspace for scopes? If so delete it. Even when they’re not visible it brings my MBPr (i7/16gig/SSD) to a crawl. Completely different experience on my new iMac (i7/24gig). So I’ve seen it work both ways.
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