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Does YouTube store and stream all videos losslessly? How does this work otherwise?
by dahfizz 4y ago
Does YouTube store and stream all videos losslessly? How does this work otherwise?
- kleer001 4y agothings like redundancy and crc checks I assume
- ezfe 4y agoThe data is represented large enough on screen that compression doesn't destroy it.
- Beltalowda 4y agoe.g. similar to a QR code stored as a JPEG will still work fine.
- deleted 4y ago[deleted]
- LukeShu 4y agoNo, YouTube is not lossless. The video that is created in the example in the README is https://www.youtube.com/watch?v=Fmm1AeYmbNU https://www.youtube.com/watch?v=Fmm1AeYmbNU We can see that data is encoded as "pixels" that are quite large, being made up of many actual pixels in the video file. I see quite bad compression artifacts, yet I can clearly make out the pixels that would need to be clear to read the data. It looks like the video was uploaded at 720p (1280x720), but the data is encoded as a 64x36 "pixel" image of 8 distinct colors. So lots of room for lossy compression before it's unreadable.
- deleted 4y ago[deleted]
- deleted 4y ago[deleted]
- martincmartin 4y agoImagine a QR code that changes once every X milliseconds.
- dahfizz 4y agoThat's an excellent analogy, thank you.