Bitterblue

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I'll leave the ffmpeg part to you to figure out, but here's the explanation about YUVRGB_Scale: it doesn't describe the video's colour range. YUVRGB_Scale describes the desired output range when...

Yes, limited range is also known as TV range, full range is also known as PC range. I know, it's confusing. YUVRGB_Scale is basically backwards compared to what one might...

It was wrong before this commit: https://github.com/dwbuiten/d2vsource/commit/3a1b750aa8ffb3c9458d49853289224f02ebf58e It's correct now. Maybe you have an old version (1.0 or older)?

Please read again: http://rationalqm.us/dgmpgdec/DGIndexManual.html#YUVtoRGB

> Am I correct in saying all YUV videos are Y(16,235) UV(16,240) (TV/limited range) input? Meaning no matter what, I would want to use -color_range tv on ffmpeg? In practice...

Even with DVDs you can't assume anything. I've seen a few where the luma went all the way to 255 in most scenes. I had some screenshots, but it looks...

You'll see lots of white pixels in the purple parts: ![limited](https://user-images.githubusercontent.com/1739488/79904536-76300d00-841d-11ea-9383-c3269b4cb72d.png) ![full](https://user-images.githubusercontent.com/1739488/79904553-7c25ee00-841d-11ea-9d7f-ea8718aa0ece.png)

These first two B frames appear (in coded order) after just one reference frame, right? So it's impossible to decode them. Should D2V Witch even write these two frames into...

If these leading B frames are not written in the d2v, the two extra copies of the I frame are not returned, so it fixes that problem. I'm not sure...