First Two Frames Wrong After Rendering

[Rob Wood]

Is this a timecode issue? Anyone have any thoughts?

[Angelo Lorenzo]

Unlink Final Cut, the timeline render is almost strictly used for preview (some exceptions like an end-to-end ProRes workflow for Mac).

I’ve had some strange issues gum up rendered timelines before. Best thing to do is clear the rendered files by:

– Set your work area around the selected clips-
– Go to Sequence > delete work area render files
– Rerender the affected portion.

——————–
Angelo Lorenzo

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[Rob Wood]

Unfortunately, I’m not sure this is the case. It’s affecting my ability to edit, since the rendered effects add a frame of “Clip A” to “Clip B”. I tried deleting the rendering, and re-rendering. Check it out here: (give it some time to load)

https://screencast.com/t/ALjCC57v3Fw

Before rendering, it’s fine. After rendering, you’ll notice the first frame of “B” is from “A”.

[Tom Daigon]

Wow, that is very wrong. I expect PrP to give me frame accurate playback, rendered or not. And I get it.

What kind of graphics card do you have? Are drivers and PrP up to date?

If your card supports CUDA are you running with CUDA on or in software mode(off)?

Tom Daigon
PrP / After Effects Editor
http://www.hdshotsandcuts.com
https://www.youtube.com/watch?v=DxPrG3WUyz8
(Best viewed at 1080P and full screen)
HP Z820 Dual 2687
64GB ram
Dulce DQg2 16TB raid

[Angelo Lorenzo]

– What version of Premiere and which operating system?
– Is your Premiere patched and up to date?
– Are you using Mercury Engine in hardware mode, if so what is the graphics card?

– Where did this footage come from?
– You mentioned effects, do these clips have any applied and if so which?
– If the answer to above is yes, does the transitional cut render render properly without effects applied?

——————–
Angelo Lorenzo

Need to encode ProRes on your Windows PC?
Introducing ProRes Helper, an awesome little app that makes it possible
Fallen Empire Digital Production Services – Los Angeles
RED transcoding, on-set DIT, and RED Epic rental services
Fallen Empire – The Blog
A blog dedicated to filmmaking, the RED workflow, and DIT tips and tricks

[Rob Wood]

1) 6.0.2 on Mac OSX 10.6.8
2) I just installed the 6.0.2 update
3) Not sure how to tell if I’m using Mercury Engine

4) It’s all imported from my Canon 7D @ 24FPS
5) The screencast I posted did not have any effects applied. However, when you apply an effect, the first frame of “Clip B” does not have the effect applied to it. For instance – if you apply color correction to Clip A – then render – and the one frame of Clip A is at the beginning of Clip B – that frame is not color corrected (so it requires a chop-off)

[Rob Wood]

Another interesting thing, is that when I hover over “Clip A” – i.e. the one whose single frame is transposed onto Clip B – it shows:
End: 00:00:03:14
Duration: 00:00:03:15

Is that where the extra frame issue is coming into play?

[Angelo Lorenzo]

That part, I don’t think so. It counts frame 00:00:00:00 in that duration, for instance.

——————–
Angelo Lorenzo

Need to encode ProRes on your Windows PC?
Introducing ProRes Helper, an awesome little app that makes it possible
Fallen Empire Digital Production Services – Los Angeles
RED transcoding, on-set DIT, and RED Epic rental services
Fallen Empire – The Blog
A blog dedicated to filmmaking, the RED workflow, and DIT tips and tricks

[Tom Daigon]

[Rob Wood] “3) Not sure how to tell if I’m using Mercury Engine”

You are always using the Mercury Playback Engine. 😀 But only certain graphics cards support CUD processing.Some folks recently have reported problems using it.

Heres a screen from my Mac Pro. I have a card that doesnt support CUDA so the place the pointer is showing is greyed out and set on “software”. With a CUDA supported card you can manually select the other choice which is “hardware”.

If you have that ability, try another setting.

Tom Daigon
PrP / After Effects Editor
http://www.hdshotsandcuts.com
https://www.youtube.com/watch?v=DxPrG3WUyz8
(Best viewed at 1080P and full screen)
HP Z820 Dual 2687
64GB ram
Dulce DQg2 16TB raid

[Rob Wood]

Thanks Tom 🙂 Yea, I just have Mercury Playback.

So, after tons of troubleshooting, playing around with settings, etc… I’ve finally nailed the symptoms…

Rendering of any sort – whether there are effects applied or not – causes a one frame shift to the right. Period. Now that I’m able to ‘predict’ the behavior, I can work around it – but wow – this is incredibly annoying. I was hoping that the update from 6.0.0 to 6.0.2 would fix it – but alas – no cigar.