Tim Cook shared them on Twitter. Social media sites always compress photos to save disk space on their servers, some more than others. They were probably re-compressed by the site that reported on the Tweets (MacRumors), and who knows, probably everythingiCafe tried to do some compression on top of that as well when I posted them here.
The original photos on the owner’s phone are of better quality, though I’m not saying that there isn’t some degree of graininess even on the originals.
I've seen some pretty nice 1080p and 4K videos on YouTube.
It sounds like one of these things is happening when you upload/play your videos:
1. You're not using the correct upload settings when uploading the video file.
2. You're not selecting the HD version of the video to play on YouTube.
3. The video file wasn't properly encoded prior to upload.
1. Is a-ok. It's not my uploads that are the problem
2. Always select HD if it does not auto choose it
3. Nope not the problem for me at least. I edit and encode video all the time
I have not used YouTube in a few years so maybe they've gotten better. Video takes up a LOT of space and YouTube is free so there has to be a balance. I've paid for Vimeo for the past 3 or 4 years and while it's better than YouTube, they still compress video as well..
But you are correct, video look okay on YouTube but it could be better f they didn't compress it so heavily..