They do not, the vast amount are PNG files where the creator of the video themselves didn't have access to the vectors. It also is completely unrealistic to co

They do not, the vast amount are PNG files where the creator of the video themselves didn't have access to the vectors. It also is completely unrealistic to convince everyone to use a new video format, not to mention the gigantic amount of videos from the past (e.g. cartoon tv shows from the 90s) that no longer have any source material available and all that remains are digitalized copies.