Choppy Playback

[Matthew1285]

I recently upgraded my ram from 16gb to 32gb. I upgraded my motherboard to handle the threading and I still have choppy playback. I went through a few threads but nothing is really working. This is what I have for my pc.

Processor Intel(R) Core(TM) i7-9700F CPU @ 3.00GHz, 3000 Mhz, 8 Core(s), 8 Logical Processor(s)

Installed Physical Memory (RAM) 32.0 GB

I currently have 28gbs allocated to PP and other adobe products. I also have a NVIDA GEFORCE GTX 1070

I read that my monitors might play a role as well. Both my monitors are at the recommended settings (1920x1080) 60 Hz with an 8bit depth.

I already fixed the audio before with a different issue, but this is something else. Any thoughts?

[basil1891]

About a week ago someome had similar issue apparently caused by latest Nvidia driver. The solution was a roll back to October release. If not help, likely you'll have to use proxy

[Matthew1285]

I think proxies are what I would have to do. I'll try to do the roll back too.

[R Neil Haugen]

What format/codec are you working with? How many drives are you using, and what type? What effects are you using?

All three are crucial.

Neil

[Matthew1285]

Neil,

Format: DV NTSC

Codec: MP4

Before changing the Timebase, it was at 60 fps. I changed it to 30 to get a smoother playback which helped some but at certain parts, it continues to drop frames. Should I try to use a different format? One that would fit 1920x1080 at 60fps?

[R Neil Haugen]

Sometimes ya gotta go with what works.

For some rigs & workflows, doing transcodes to an intraframe codec like Cineform (or ProRes or DNxHD/R) to edit, then dumping the t-codes when done (you can recreate them if you go back to that project) is the wiser choice. Just to get work done.

Higher pixel counts like 4K increase computer load. Higher fps counts increase computer load. Long-GOP media increases computer load.

Depending on what your gear can handle, you can choose to fight it constantly, or simply do a bit of initial setup for projects so  the work actually flows and gets done.

Neil

[Matthew1285]

Agreed. I will play around with the codec and see what works with the footage I have. So far lowering it to 30fps has fixed a lot of choppy playbacks.

[John V Knowles]

Matthew,

Chiming in here: your footage info is a little confusing. DV NTSC uses the DV codec, and it's 720x480. Mp4 is the container/wrapper, though usually DV files are wrapped as .MOV, or occasionaly .DV. How were these clips ingested? Also if you're enlarging from 480 to 1080 on yout timeline that could be another clue to the issue; any time you scale media you force your computer to work harder than if you worked at the native frame size.

WM

[Matthew1285]

Yeah, I was wondering about that too. These were recorded by a third party, so the footage I was given is MP4s. I create a sequence using the clip so I would assume that it would set up on the correct codec and not something completely different, right?

[Jeff Bellune]

Use a tool like MediaInfo to inspect your source footage. Then set up a Pr sequence to match.

[Andy 1968]

MPEG4 uses H.264/265 video codecs. Some variatons of H.264/265 even at 720 X 480 resolution might be hard to playback. Do other video files playback OK?

[Matthew1285]

Yeah? I wonder why. Yes, but only on half of my projects so far.