Platinum 14.0, preview choppy when playing back

LordProto wrote on 7/20/2017, 10:09 AM

System specs:

24 GB Ram

64-bit operating system Windows 10

Intel Core i7 CPU processor with 4 cores

NVIDIA GeForce GTX 680 Graphics Card

My Problem:

I don't know if it's my current setup or my settings in the program, but when adding effects or adding clips of sound/video to a video I'm editing, the preview stutters making it incredibly hard to see what changes I've made. I've tried changing the preview quality, which doesn't work. In fact, it only makes it worse because not only is the preview choppy when it's playing back, but the change makes it low quality as well.

The stutters don't happen until effects are being played in the timeline. The stutters don't show up anywhere in the rendered video, but I won't get to the rendering stage with this preview lag.

Comments

Markk655 wrote on 7/20/2017, 7:54 PM

You can always try SHIFT-B (Build dynamic RAM Preview) to help with those specific areas. Depending on what/how many effects you are adding as well as the resolution of the native video, you may end up with the lag.

LordProto wrote on 7/23/2017, 10:58 AM

I made a video describing my issue.

LordProto wrote on 7/23/2017, 10:59 AM

You can always try SHIFT-B (Build dynamic RAM Preview) to help with those specific areas. Depending on what/how many effects you are adding as well as the resolution of the native video, you may end up with the lag.

I don't think SHIFT-B works, I've tried it. Allocating even 10000 MB of RAM to the program doesn't help either, I have it set to 2000 MB at the moment.

Markk655 wrote on 7/23/2017, 3:09 PM

The RAM allocation is just for Dynamic Ram Preview (not real time preview).,

For Build Dynamic Preview to work, you need to set an In (I) and Out (O). The amount it pre-renders is related to the dynamic ram preview allocation that you set in preferences.

To confirm, you did check 'adjust size and quality' by right clicking in the preview window? That should help. But it sounds as if you have already tried that.

LordProto wrote on 7/23/2017, 4:28 PM

The RAM allocation is just for Dynamic Ram Preview (not real time preview).,

For Build Dynamic Preview to work, you need to set an In (I) and Out (O). The amount it pre-renders is related to the dynamic ram preview allocation that you set in preferences.

To confirm, you did check 'adjust size and quality' by right clicking in the preview window? That should help. But it sounds as if you have already tried that.

I have indeed already tried adjusting size and quality, which didn't work. Is there any way to pre-render it to see my changes and not have lag?

Markk655 wrote on 7/23/2017, 4:58 PM

Dynamic RAM preview is exactly what that is for. The amount of time that it will render depends on the settings in preferences. So, step wise:

Click at the start of the area that you would like to render. Press I
Click at the end of the area that you would like to render. Press O. You should now see a selection made.
Either go to Tools>Build Dynamic RAM Preview (or press SHIFT+B)

If it did not render enough (eg. rendered only some of the selection), go into preferences and increase your Dynamic RAM Preview (per your video). Repeat steps 1-3.

If you still can't render enough timeline, you can always render out multiple files using SHIFT+M (Selectively prerender file.

I DO find it curious that the change in the preview resolution didn't alter the performance. However, I'm not sure which effects you are using or the number of tracks.

Other troubleshooting...

Have you checked to see that there are no other computer processes trying to take up cpu cycles while you are trying to preview?

LordProto wrote on 7/23/2017, 7:43 PM

It works! I allocated 8000 MB of RAM to the process, I highlight, do SHIFT+B, it pre-renders rather fast, and it plays smooth! Thank you so much, man! This'll come in handy and will help me out in the long run.

Markk655 wrote on 7/23/2017, 7:52 PM

@LordProto - Glad to hear you got it going!