2024-11-13, 06:39 PM
(This post was last modified: 2024-11-13, 06:44 PM by Giresharu. Edited 2 times in total.)
(2024-11-12, 01:39 PM)TheDreadPirate Wrote: If it is too large, you can zip the subtitle track and then attach it.
I did some research on ASS subtitles myself and found the root of the problem. I created an ASS subtitle file with only two lines that can trigger this issue.
test.zip (Size: 712 bytes / Downloads: 64)
The problem is not related to the font, nor to the video. The issues are: The subtitle has transparency.
It might sound silly, but this is indeed a key point that triggers the problem:
When the subtitles are opaque, the issue does not occur.
When the subtitles have a transparent attribute, under QSV hardware acceleration, even a slight transparency is amplified, leading to the semi-transparent issue that I mentioned earlier, which is different from other players. I suspect that there is an incorrect multiplication calculation of the opacity value when burning the subtitles, which is why most opaque subtitles are not affected. Coincidentally, the subtitle group that I like tends to prefer using subtitles that are slightly transparent., so almost all the subtitles in my videos have become excessively transparent.