MP4 White & Super White Issue

[frenshprince]

Hi there,

I found an issue with Edius when importing some mp4 videos.
Edius interprets them as "superwhite", which is wrong, and there is no way to change that.

I attached two caps :
1) One is with the mp4 file directly imported in edius.
2) The other is an export of the mp4 from Resolve.

Is that a known issue ?
If so, what can we do to force Edius to see the right Range ?

Thanks

[Andreas_Gumm]

And sadly you can't adjust "white" "superwhite" in file properties manually for most video formats for no reason!
If Edius doesn't recognize the color space correctly, you can't correct it easily by switching the color space, because it's greyed out mostly.

Andreas

[Claire]

And sadly you can't adjust "white" "superwhite" in file properties manually for most video formats for no reason!
If Edius doesn't recognize the color space correctly, you can't correct it easily by switching the color space, because it's greyed out mostly.

Andreas

I remember (long time ago) when it was not greyed out. It worked and was much used, especially when DLSR's arrived for video. Now the YUV curve is needed to correct for such mismatches.

[Andreas_Gumm]

I remember (long time ago) when it was not greyed out. It worked and was much used, especially when DLSR's arrived for video. Now the YUV curve is needed to correct for such mismatches.

Yes, and I felt more comfortable and save with that option because I didn't have a doubt of being precise.
It's totally different compared to the way of manipulating curves manually now, even when I save a
preset of that curve.

Andreas

[baddgsx]

I really disappointed hearing that there more issues with codecs being used properly with in Edius. Can we see improvements in the future?

Can we make a list of what codecs work properly and which ones don't work properly in Edius? And show the engineers.

Thanks
Chris

[frenshprince]

I remember (long time ago) when it was not greyed out. It worked and was much used, especially when DLSR's arrived for video. Now the YUV curve is needed to correct for such mismatches.

There is three ways to correct it :

1) Adjust black and white levels with YUV curve filter (B16 - W234)

2) Adjust contrast and luminance with color balance filter.

3) Adjust Lift and Gain in the new primary correction tool.

1) and 2) are wrong, because they only adjust luma, and no chrominance.
3) is ok, but not perfect.

[kpot]

There is three ways to correct it :

1) Adjust black and white levels with YUV curve filter (B16 - W234)

2) Adjust contrast and luminance with color balance filter.

3) Adjust Lift and Gain in the new primary correction tool.

1) and 2) are wrong, because they only adjust luma, and no chrominance.
3) is ok, but not perfect.

With the new primary color correction tool you can do all of the above (bold marked).

[Andreas_Gumm]

I would prefer to conform the clips by the intended switch.
No one needs a switch when it's greyed out even if correction is needed.

Andreas

[frenshprince]

I would prefer to conform the clips by the intended switch.
No one needs a switch when it's greyed out even if correction is needed.

Andreas

I tried in Premiere CC, and it's the same.
Bad interpetation of the range.
And I didn't see a way to change it, without manually adjusting levels.

[Andreas_Gumm]

I tried in Premiere CC, and it's the same.
Bad interpetation of the range.
And I didn't see a way to change it, without manually adjusting levels.

Wrong recognition can happen and it has to be expected sometimes!
I just complain about the greyed out status of the field that could help to correct fast!

Andreas

[frenshprince]

Wrong recognition can happen and it has to be expected sometimes!
I just complain about the greyed out status of the field that could help to correct fast!

Andreas

I agree, but what I mean is, that premiere doesn't have a way to change it either.
Resolve does.

[Andreas_Gumm]

I agree, but what I mean is, that premiere doesn't have a way to change it either.
Resolve does.

No matter what Premiere does,
Edius has a switch that that does not work for most video files. ;)

Andreas

[frenshprince]

Do you know a way to change flag of a MP4/move file without rencode ?

[frenshprince]

After spending time on this issue, I don't think Edius is faulty on this.

Those mp4 files recorded with a sony Nex6 and an Actioncam don't have standard levels.
They're not 16-235 or 0-255, but 16-255.
No wonder that Edius or Premiere can not interpret them right.
Even in Resolve, if you interpret them as legal range, they're being seen at 32-235.

I also have GoPro mp4 files, and the are perfectly interpreted at 16-235 in Edius.

[wschmid]

16-255 is definitely a strange thing and should be banned :)
This doesn't change the fact that Edius can't interpret properly 0-255 h264s.

For the upcoming 10bit UHD age 16..235 will be the strange thing maybe, since new units seems to be not limited to the legal range any more. :)

Fact is, that I have pointed to this behaviour a year ago in the German forum base on GH4 footage and this behaviour could be shown with test patterns in clear way. But nothing was done. Other tools like Vegas does not show that behaviour with mp4. So not every tool has this bug.