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Black bars on videos
You may notice some widescreen videos that have black bars on all sides. Here’s why this formatting may appear:
- The video file includes horizontal black bars (letterboxing) at the top and bottom of the video player in order to fit a 4:3 aspect ratio.
- Our 16:9 aspect ratio player then adds vertical black bars (pillarboxing) to fit a 4:3 formatted video to YouTube player dimensions.
- The end result is black bars all around the video (windowboxing).
If you’re uploading widescreen videos, you can avoid windowboxing by cropping your video to the 16:9 format.
最後更新：2017-05-23 04:41:04