Why Can't My "Supercomputer" Do Video Editing?

SquirrelMadness · 18 Jan 2015 at 14:44

Using Adobe Premiere Pro CC.

Working with 1080p video I downloaded off Youtube for a test. Preview resolution is set to 1/2. Mercury GPU acceleration is enabled. Sequence settings preview: AVI 720p with all checkboxes below unchecked. 30FPS.

Haven't even added any effects, playback using JKL keys stutters like crazy. Clicking on different parts on the video timeline takes 2-4 seconds to update in preview. Don't understand why it's so bad, think I've tried everything.

Hardware:
i7 5930k @ 4GHz running constantly at 4GHz frequency (high performance setting).
GTX780 Graphics card @ stock speed.
Videos located on SSD but project saved to HDD.
32GB RAM.

Haven't rendered anything because the moment you add or change an effect you have to re-render again. I don't see why I should have to render a completely un-edited video anyway. If if plays smooth in Windows Media Player why doesn't it in Premiere? Thanks.

Trojan Horse · 18 Jan 2015 at 14:59

may the lord gaben help you

atmax1 · 18 Jan 2015 at 15:22

been a while since i played with Premiere Pro but did you bump up the preview ram?

SquirrelMadness · 18 Jan 2015 at 15:32

atmax1 said:
been a while since i played with Premiere Pro but did you bump up the preview ram?

Not sure if this is what you mean:

atmax1 · 18 Jan 2015 at 15:53

Yeh it is, have you tried a different file and file format?

Westyfield2 · 18 Jan 2015 at 16:11

Are you editing the video straight from Youtube? That's going to be really compressed.

Premiere will have to decompress each clip as you try to play it back and edit it, which often creates bad stutter. Even super fancy high spec machines can suffer with this issue.
The solution is to convert your video clips into a decompressed format before editing them.

joeyjojo · 18 Jan 2015 at 17:01

Westyfield2 said:
The solution is to convert your video clips into a decompressed format before editing them.

Hope you've a big SSD OP!

Westyfield2 · 18 Jan 2015 at 17:14

joeyjojo said:
Hope you've a big SSD OP!

Dedicated scratch drive TBH.

SquirrelMadness · 18 Jan 2015 at 17:23

Westyfield2 said:
Premiere will have to decompress each clip as you try to play it back and edit it, which often creates bad stutter. Even super fancy high spec machines can suffer with this issue.
The solution is to convert your video clips into a decompressed format before editing them.

It did the same with uncompressed GoPro videos a while back, but worse since they were 4k! The vids I'm using are all MP4s.

Anyway, after leaving my project open for a while it seems to be playing much smoother now, even at full preview quality :confused:

I noticed the yellow bars appeared, and the green bar is a section I rendered myself. Both yellow and green bars play more or less as smoothly as each other.

I added a Gaussian Blur as a test and the first playback was stuttery, but second was smooth.

What does yellow bar mean (as opposed to red or no bar at all)?

Is PP analysing all the files in the background or something? Thanks.