Does it “look” right to you ? Does “black” look black to you ? Do the colors look right to you ? Do skintones look right? I suspect it will fail on other submission criteria if you use those clip values. That’s my point - because the contrast is too low. Yes,I totally believe using those clip values will “pass” mathematically. Professional legalizers typically filter out the channels before measuring as well, and they will give you a % and/or hotspot visualization.įfmpeg is funny but those are the values needed to get RGB 5 - 246. But for EBU, that 1% of the active image area refers to values between 1 to 4, 247 to 254 in either Y, or converted to R, G, B channels is allowed. EBU is not common for USA/North Amercian targets. This is very common for submission guidelines for other clients, other broadcasters non EBU as well. Signals outside the active picture area shall be excluded from measurement.” Measuring equipment should indicate an “Out-of-Gamut” occurrence only after the errorĮxceeds 1% of an integrated area of the active image. The picture therefore, the EBU further recommends that “Certain operations and signal processing may produce relatively benign gamut overshoot errors in Do you have evidence to the contrary? I need proof, not supposition. I’ve checked all of this out using the tool YOU helped me with and it passes muster. Is there a reason why you are targetting EBU r103 ? That’s probably why you’re not seeing illegal valuesįfmpeg -y -i “test.avi” -vf lutrgb=r=‘clip(val,44,199)’,lutrgb=g=‘clip(val,44,199)’,lutrgb=b=‘clip(val,44,199)’ output.mpg Black will not be “black” anymore, white will not be “white” anymore, colors will be off, saturation low. That is going to reduce the contrast and look washed out. Was that a typo ? R,G,B clipped to the range seems drastic. It’s usually not a big deal for most types of content - and you’re usually allowed ~1% leeway. ![]() out of gamut errors, out of range, however you want to define it - since new values are generated from the subsampling, even though you started with 100% within limits ![]() This is using a tool external to Shotcut. ![]() Illegal in what sense? I examine the values in the final exported yuv. A potential issue with clipping in RGB then converting to YUV422P8, is that conversion (especially subsampling step) will generate new illegal values
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