Modern video services perform multiple encodings with different codecs, bitrates and screen dimensions, and serve up the most appropriate format that the client

Modern video services perform multiple encodings with different codecs, bitrates and screen dimensions, and serve up the most appropriate format that the client device can decode. Youtube has hundreds of format variants: https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba115a011a4aa https://gist.github.com/MartinEesmaa/2f4b261cb90a47e9c41ba11... Devices with AV1 hardware decoding - rare as they are - won't be obsoleted for a long time.