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erkserkserks / h264ify

A Chrome extension that makes YouTube stream H.264 videos instead of VP8/VP9 videos
MIT License
1.03k stars 114 forks source link

Video Quality Issue #55

Open GKid94 opened 5 years ago

GKid94 commented 5 years ago

You can clearly see that the video quality is worse on H264, just look at the logo in the bottom right corner, can you please do something to improve the quality, both of the screenshoted images are in 1080p but the H264 one looks like it's in 720p

H264 h264 VP9 vp9

erkserkserks commented 5 years ago

This looks like a limitation of the h.264 codec, or youtube's h.264 encoding process. VP9 produces better looking video than h.264 at the same bitrate. Unfortunately, the only way to get video that looks like the VP9 screenshot is to play VP9 video, there is nothing that h264ify can do.

GKid94 commented 5 years ago

I've also noticed that some 60fps VP9 videos look worse when I block 60fps and play them in 30fps

GKid94 commented 5 years ago

Both screenshots are in VP9, you can see that the 30fps video is a little blurry 30fps 30fps 60fps 60fps