Frame Errors on 25fps to 50fps Conversion XAVC Export

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jan_berlin

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Frame Errors on 25fps to 50fps Conversion XAVC Export

PostTue Apr 06, 2021 8:48 am

Hey Folks. Since v17 of Resolve Studio we have a strange problem: for broadcasting purpose we have to convert our 25fps ProRes4444XQ P3D65 PQ master to 50fps XAVC 100 CBR Rec2100 HLG.
Everything was cool in v16. Creating a 50fps project and dropping the 25fps file into the timeline. Frames were duplicated (no interpolation), playback was fine. But since v17 the rendered files are corrupted. There are wrong frames in the export regarding their temporal position.
Source is like frame 1, 2, 3, 4, 5, 6, ... (25fps) and the destination should be 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, ... (50fps). But randomly it is like 1, 1, 2, 1, 3, 3, 4, 2, 5, 5, ...

This is not fixed in the latest version. Could someone reproduce this behaviour?
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Marc Salvatore

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Re: Frame Errors on 25fps to 50fps Conversion XAVC Export

PostFri Apr 09, 2021 9:27 pm

I'm having the same problem with XAVC in Resolve 17 and I'm just rendering 30p (no frame conversion) to intermediate files for use in another program. Worked perfectly in Resolve 16 which I just recently upgraded from. My solution has been to switch to Cineform for intermediate work but I do hope they fix this bug as XAVC is a nice codec.
ASUS X99-A/USB 3.1 / i7-5820K / 64gb ram / NVidea 2070 Super / Windows 10
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Jim Simon

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Re: Frame Errors on 25fps to 50fps Conversion XAVC Export

PostSat Apr 10, 2021 2:19 pm

I tested at HD resolution, but it came out fine.

Studio 17.1.1 for Windows.
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jan_berlin

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Re: Frame Errors on 25fps to 50fps Conversion XAVC Export

PostMon Apr 12, 2021 10:23 am

Jim Simon wrote:I tested at HD resolution, but it came out fine.

Studio 17.1.1 for Windows.

Strange. Because it seems Marc is using Windows too. I am on MacOS 10.15. Which frame rate did you use @Jim?

Thank you for your feedback!
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Andrew Kolakowski

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Re: Frame Errors on 25fps to 50fps Conversion XAVC Export

PostMon Apr 12, 2021 11:13 am

It's probably some AVC encoder issues (and those are not necessarily same between OSes).
Last edited by Andrew Kolakowski on Tue Apr 13, 2021 8:58 am, edited 1 time in total.
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Jim Simon

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Re: Frame Errors on 25fps to 50fps Conversion XAVC Export

PostMon Apr 12, 2021 1:51 pm

The clip I tested was 25p, timeline was set to 50p.

Nothing was interlaced.
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Uli Plank

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Re: Frame Errors on 25fps to 50fps Conversion XAVC Export

PostTue Apr 13, 2021 1:52 am

Try the MainConcept exporter. They are focused on broadcast formats: https://www.mainconcept.com/products/pl ... s/bmd.html
Don't approach Resolve with your expectations from other NLEs! They are all different.
Resolve Studio 17.2 and Fusion Studio 17, macOS 10.15.7
iMac 2017 Radeon Pro 580 8 GB VRAM, 32 GB RAM
2018 Mac mini 16 GB RAM, eGFX Breakway RX 580 MacOS 10.15.7
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jan_berlin

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Re: Frame Errors on 25fps to 50fps Conversion XAVC Export

PostThu Apr 15, 2021 9:28 am

Could be a solution @Uli, but I would prefer a bug fix. Btw, there was no reaction from the BM support team on this issue yet :roll:
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Andrew Kolakowski

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Re: Frame Errors on 25fps to 50fps Conversion XAVC Export

PostThu Apr 15, 2021 10:24 am

Have you reported to support? This is users forum not support. Don’t assume that if you write about some problem here BM will fix it.
You need to send support ticket and provide all needed info including Resolve log, OSX version, drivers version etc.
Your initial post is way not enough detailed to analyse it.
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jan_berlin

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Re: Frame Errors on 25fps to 50fps Conversion XAVC Export

PostFri Apr 16, 2021 8:03 am


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