Resolve Crushing Blacks in GoPro footage

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Eric Testroete

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Resolve Crushing Blacks in GoPro footage

PostMon Feb 06, 2017 4:17 pm

I've got some non protune footage that I'm working with. The blacks seem to be getting crushed by resolve. The problem doesn't happen in Premiere.

Setting the input color to srgb helps a bit, but it's not quite enough.

Any ideas?

VLC
Image

Resolve
Image

I'm using the latest free version of resolve on Win 10. I can get the exact details later if required. I also tried setting my monitor profile to sRGB as that fixed a similar problem with lightroom in the past. No dice.
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Ara Thomassian

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Re: Resolve Crushing Blacks in GoPro footage

PostMon Feb 06, 2017 10:17 pm

Have you tried setting your color settings for the individual clips in the media pool? (right click the file and click on clip attributes)

Try changing the clip to something other than "auto."
Possibly try toggling to data and see what happens.

Anyway, best of luck!

-Ara
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waltervolpatto

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Re: Resolve Crushing Blacks in GoPro footage

PostMon Feb 06, 2017 11:17 pm

what Ara said and welcome to the UG.
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Eric Testroete

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Re: Resolve Crushing Blacks in GoPro footage

PostTue Feb 07, 2017 5:16 am

Thanks Ara and Walter,

Setting the Data levels to full fixed it. For those searching, the option also appears in project settings -> capture and playback
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Ben Carlson

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Re: Resolve Crushing Blacks in GoPro footage

PostSun Jan 24, 2021 3:57 pm

Bouncing this old topic...
I have a GoPro Hero 5 Session and noticed that while full range is what MP4 clips from this cam seem to work best in Resolve 16.2, I am still puzzled by the fact that:

1) Mediainfo reports these two lines:
Color range: Limited
colour_range_Original: Full

2) Resolve 'auto' equals video levels, which causes the scale to be expanded to 0-1023 (on the scopes set to 'video levels'; the project target output is video levels, ); manually forcing 'full' in clip's attributes constrains the range within 64-940.

As a comparison (since I'm still only discovering Resolve's intricacies in different scenarios), clips from a Canon DSLR (reported as Color range: Full by Mediainfo) are set as Full with 'Auto' by Resolve and hence constrained to 64-940 in the scopes, as expected.
Also, the GoPro H5 clips are seen as Full Range by Avid MC, and automatically get a default 'full to video levels' adapter to match a BT.709 project.

Question #1: what do these 2 color range entries (with contradicting info?) mean for the GoPro clip ? Which one is monitored by Resolve when importing the media ? 'Color range: Limited' I guess (hence the video levels set by default), but this seems the unwise choice, per this thread ?

Question #2: does anyone know for sure what the real range is for MP4 clips shot by 'older' GoPro cameras like the H5 Session ?

Question #3: for easiest editing of clips from these two cams together, isn't it best to set both to 'full range' (overriding the default set by Resolve for the GoPro clips), so I have a consistent range for both cams to start with ? Or is it more accurate to keep the GoPro clips as 'Video' (or 'auto') and reduce the range of these clips on the color page to match those of the Canon DSLR (as a first step in matching the clips)? I would think these two approaches will yield the same result, especially considering the limited 8-bit resolution of the clips mapped to 32-bit float, but I may be wrong.
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Ben Carlson

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Re: Resolve Crushing Blacks in GoPro footage

PostSun Mar 21, 2021 4:28 pm

BOUNCE...

Question #2: does anyone know for sure what the real range is for MP4 clips shot by 'older' GoPro cameras like the H5 Session ?
DR Studio 18.6.6 Win10Pro 22H2 19045.5371 i7-8850H 2.6GHz - 32GB RAM;
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OS,Library,Project: 1TB SSD - Cache & src media files: 500GB NVMe
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Mini Monitor & Mini Recorder (Deskt Vid 12.0)

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