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awpsome
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Playback is choppy / slow while speeding up clip anything above 200%

Mar 11, 2013 12:37 AM

Tags: #video #premiere #rendering #playback #play #slow #choppy #render #back #cs6 #duration #speed

Coming from using Final Cut Pro X for a while, ive just bought myself a new laptop.

 

Basic Specs are:

Intel i7 3840QM 2.8ghz with 3.8ghz turbo

32GB Ram 1600mhz

1TB SATA 7200rpm in Raid 0

2GB GeForce GTX680M

 

Long story short, ive been a long time PC fan my whole life although using the mac only for video editing and being a basic macbook pro 13" with final cut pro x seems to outperform my newly acquired PC laptop.

 

I bought this laptop with the intentions to move my video editing platform back to a PC state and with the new Premiere cs6.

 

everything is smooth and all that but the same issue i remembered about premiere back when i wanted to try it out in cs3 time. the playback for previewing video is slow and choppy.

 

i have to always "render" my video just to preview it smoothly which is very time consuming. I always thought because back in the day my laptop wasnt as good as my new one now so that was the issue and moved over to my mac which was great for video editing only.

but that mac has basic specs compared to my new laptop and still the preview is flawless and smooth with LIVE video previewing. i mean i can do speed duration changes of 10% slow down all the way to 1000% speed ups and watch my video that same instant after.

 

but with premiere if i do anything speed changes of more then 200% original frame time it plays fine for 2 seconds at that accelerated speed then gets choppy and slow.

I even changed the playback resolution to 1/4 quality and i get the same issue.

 

i wouldnt mind waiting for the render so i can see that smooth playback and determine whether i like it or not except when rendering my clips from my gopro which is recording at 60fps 1080 it takes over 15 minutes.

 

This has always seemed to be an issue with premiere for me and am wondering if there is something i am missing here..

 

anyone point me to the right direction?

im not hating on PC or adobe at all, i love these two platforms in every other way but when it comes to this editing all i hear is good things about them but when i go to use them for myself its extremely frustrating.

 

 

P.S. yes i have set my GPU to use the mercury GPU accelerated mode which did minimal difference with playback smoothness.

 
Replies
  • Currently Being Moderated
    Mar 11, 2013 4:33 AM   in reply to awpsome

    Pr isn't optimized for the newer GoPro stuff.  Since FCP transcodes the video on ingest, you may have to do the same with Pr for this type of footage.  You can use the Adobe Media Encoder to batch transcode your footage to an intermediate codec.  

     

    Jeff

     
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  • Currently Being Moderated
    Mar 11, 2013 12:03 PM   in reply to awpsome

    Try the MXF Op1A preset that matches the footage settings and see if it works for you.

     
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  • Currently Being Moderated
    Mar 11, 2013 12:08 PM   in reply to Kevin Monahan

    Hi Kevin,

     

    The MXF Op1A produces good results, but it's dog slow.  About 4x real-time.  AME/Pr only ever use one core (25% CPU) during encoding.  By contrast, UT (on Windows, and maybe Mac?) uses a little under 50% and encodes a tick faster than real-time.

     

    Do you get high CPU usage or fast renders with Op1A?

     

    Thanks,

    Jeff

     
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  • Currently Being Moderated
    Mar 22, 2013 6:25 AM   in reply to awpsome

    Have you tried using Cineform Studio to convert to a larger but less complex .avi or .mov file?

     

    http://gopro.com/software-app/cineform-studio

    .

     
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  • Currently Being Moderated
    Jul 21, 2013 7:27 AM   in reply to garth_rhymer

    I was having this issue last night while going through a bunch of 1080p 60fps footage I took yesterday with my Hero3 Black. I wasn't doing any speeding up or down, just previewing footage to cut sections out. It would play back fine for 6 seconds, then get choppy which got worse the longer I let it play. It played fine for 6 seconds after each pause and play.

     

    I used Cineform as mentioned to convert the files which are now huge but play back without trouble. A 13 minute 2.8GB file became 25GB.

     

    Hopefully this issue gets fixed so I don't have to go through all that.

     
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