Nowadays, it is more and more convenient to shoot videos with mobile phones, and the specifications and formats are becoming more and more diverse. For example, most of the colors we shoot videos are Rec.709. However, with the advancement of mobile phones, many mobile phones can already record HDR videos. A format with a higher dynamic range than SDR.
Shooting HDR videos is certainly a great thing, but if your monitor does not support HDR, overexposure will often occur when watching HDR videos. .The same thing applies to editing. If the video you get is in SDR or HDR format, then during editing you will find that when shot in the same space, the tone and exposure of the two videos are different. Similarly, you will go crazy just grading there... At this time, you have to solve the problem through "Explain the material":
Change the HDR material video in Premiere For SDR
Here you can see first that when my screen has not turned on the HDR function, the HDR videos viewed on the player are all overexposed:
Because my screen supports the HDR function, So I just need to turn on the HDR function in the settings of the monitor:
It will be normal to play HDR videos:
Now the latest version of Premiere can already support HDR videos. , the picture can be displayed normally, but overexposure still exists because HLG has exceeded the color space range of Rec.709 (the project setting is Rec.709):
But when you output the video, You will find that the entire video is overexposed:
Solution
Sometimes you may just make a mistake and forget to turn off the HDR function when shooting. Sometimes it may also be that you receive The material is a mix of HDR + SDR, but in the end you don’t want to output it into the HDR video format. Mixing and editing the two videos is also very troublesome.
At this time, you have to use the function of interpreting the material to convert the HDR The method to convert the video to Rec.709 color is also very simple. Right-click the HDR video → Modify → Interpret the material:
After entering, you will see the column covered by the color space at the bottom. Currently The color explanation of the video is REC .2100 HLG, which is the HDR format:
Then click on it, change the option to Rec.709 color, and press OK:
After the change is completed , you can see on the screen that the video has been changed to the color space that conforms to Rec.709.
If you also have the situation of mixed editing of HDR + SDR videos, or accidentally shot HDR videos, you don’t know how to quickly restore them color space, then this method should be very practical for you!