It's hard to tell what your threshold for laggy vs. non-laggy scrubbing is, and therefore hard to determine if you are actually experiencing a problem or just needing to adapt to the reality of the software. It has been improved in the 5.5.1 release for H.264, but it is still not comparable to scrubbing other types of footage that is not AVCHD. H.264 is very CPU intensive, and each frame takes quite a bit of processing. I am also on a MacPro, Lion and 5.5.1 working with 5D footage, and while it is getting more acceptable to edit on the latest release, it is still not as fluid as scrubbing P2 footage in FCP, for example. But, at least there is no more transcoding - that is the trade-off. Your rendered file will be zippy since the work of processing the frames has already been done and written to a preview file. Hope that helps.
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I think that what you are seeing may simply be "normal" for non-rendered AVCHD video. DSLR, and also video AVCHD HD formats, are highly compressed and it seems that although your system is powerful enough to play back "non-rendered" DSLR OK, it is not powerful enough to pull off scrubbing for the same media. De-compressing for playback is serial in nature where a key frame (full frame) is read and then the compressed differences are de-compressed in order. When scrubbing, you are quickly jumping around, so the compression is much more intense; for example to see a new frame, CS5 may need to go to that frame, then search backwards to find the most recent full frame, and then de-compress all frames leading up to just the single frame that you wish to see. When you render (change yellow to green), the system prepares all of these "single" frames ahead of time so that you do not need to de-compress your media on the fly.
is that normal?
The short answer is yes. For this type of footage, it's normal.
Thanks to everyone for educating me on this issue.
I'm curious, would having a supported Cuda card speed up decompressing this kind of footage, or is the GPU only used for accelerating effects?
So I tried importing some ProRes 422 footage into Premiere Pro. Wow, it plays back super smooth and SCRUBS super smooth. I can apply effects and still scrub/playback smoothly.
Looks like I haven't escaped trancoding just yet. I actually don't mind transcoding if it means I get silky smooth scrubbing and performance.
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No CUDA won't help much with scrubbing difficult media.
I've had the same problem, altough my friends laptop scrubbs perfectly!
Here are our specs:
Intel Core i7 3770K @3.5GHz
RAM 32GBytes 1333MHz DDR3
NVIDEA GeForce GTX 660 Ti
SSD SAMSUNG 830 SERIES
Intel Core i7-4900MQ Processor (Quad Core, 8M Cache, 2.8 GHz, w/HD
RAM -8GB (2x4GB) 1866MHz DDR3L -NVIDIA Quadro K2100M w/2GB
-SSDR HD 256GB
my PC scrubbs through footage so much slower though... his barely drops frames at all. Its very frustraiting!
You're friend does have newer processor. The performance difference isn't surprising.
what version of PPro is friend using?
What is playback resolution on friend's pc?
Friends PC resolution settings in Premiere are "FULL". His screen resolution is the new crazy high 4k resolution.. over 3000pixles wide.
For those who missed it.... check out the scrubbing performance of my friends laptop vs my PC. His scrubbing frame rates are almost perfect! I'm only getting around 3-4 frames/second while scrubbing. We're both running the same footage from the same external USB3 HD off the same project.
WIN 7 CC
I get super fast scrubbing with all the media mentioned in these posts. Been the same for all versions.
Same with clips with FX applied and layered timelines.
Wondering about the disk set ups some of you have.
3-4 fps is indicator of a hardware and setup issue. (bottle necks, partitions, indexing, other apps, platform.....)
Start with some of the tips in the hardware forum.
ok right... I've been told its the AVCHD codec makes the CPU work really hard, so perhaps thats the problem? Or my CPU isn't handling it? I'll check the hardware forum though.... thanks...
Have you tried scrubbing with AVCHD footage? or H264?
All the time. Its what I generally work with most.. but not exclusively.
Prores 422HQ would be next.
Interesting thread. Looking at that sample video, my scrubbing looks like yours finemoves. I also edit AVCHD natively but on a 2011 iMac that according to this link http://en.wikipedia.org/wiki/IMac_(Intel-based) has a 3.4GHz i7 2600 CPU. Ouch. Maybe it's time to move to the newest iMac that according to that link has a 3.5GHz i7-4771 CPU. Maybe then my timeline scrubbing can be like your friends. Time to upgrade coming soon so it's good to learn all this stuff.
Curious though...I edit 60fps AVCHD footage on a 24p timeline...is that the CPU or GPU doing the hard work?
Hey, Shooternz, are you using mac/pc? what are the specs of your machine? I'm also looking for a good PC laptop thats lightweight and can also handle scrubbing through AVCHD footage smoothly...
Windows 7 PC Desk top. I7 CPU GeForce GTX760 GPU(4GB DDR5) multiple internal drives.
Dedicated as a Production Edit system.
I would not go near a laptop with Premiere or the Adobe Production Suite.
I would also never advise some one to use it on a MAC either. Sorry.
Just my analysis of where I read about more issues that are not O.E issues.
FWIW ; I have had lesser desktop machines over the years and they all ran fine as well in rwegards to scrubbing and playback
Holy crap... this is soo frustrating!! So in your opinion. What is the winning formula?
See my answer in your double post.
Solution is easy.
Here's a vidoe demonstrating the difference in performance.
That difference doesn't really surprise me at all.
You think the CPU is responsible for the difference? or GPU?
Without effects and in a matching sequence, it's all CPU.
There are more unknowns here than knowns!
It would not be quick to run PPBM7 on both systems, but it would be invaluable to determine what is really going on here.
Differences do not "make sense" to me, however as PPro uses many component of the hardware it could be:
- SATA hardware issues (Samsung 830 runs best w/ Intel ports - you don't mention your motherboard or ports)
- PPro version (you never did answer this when I asked it before)
- USB 3.0 issues - there are MANY possible issues here!!! You should put the project on your local drive an see how it works; USB 3.0 was introduced at IMHO a "alpha" stage, and if your friends USB 3.0 firmware/driver works better then that by itself could explain such a chasm of performance
- drive settings - file indexing should be turned OFF, hardware/policies settings can really impact performance (write caching, turn off write buffer, etc.)
- PPro configuration differences (RAM use, etc.)
- many other possibilities!
What is your full configuration: motherboard, RAM, case, power supply, coolers, etc.?
I can't believe I'm thinking of switching back to Apple. There are so many variables and I'm not really that technical. I really just want something that works and you shouldn't have to be a rocket scientist to get your system working as it should.