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Screen mirroring is achieved by transmitting an H.264 encoded video stream over a TCP connection. This stream is packetized with a 128-byte header. AAC-ELD audio is sent using the AirTunes protocol. As for the master clock, it is synchronized using NTP. Moreover, as soon as a client starts a video playback, a standard AirPlay connection is made to send the video URL, and mirroring is stopped. This avoids decoding and re-encoding the video, which would incur a quality loss.
Unofficial AirPlay Protocol Specification
nto.github.io
Obviously lots of groups have an incentive to shape what narratives people are exposed to, but I don’t think many users would opt-in to overtly propagandistic algorithms developed by organizations pushing a narrative.
Elon Is Right: Twitter Should Open Up the Algorithm
every.to
Tragically, even Tumblr’s commitment to the GIF is now in question. In 2015, it appeared to be unwavering: “The format is woefully outdated, and this begets massive, low quality animated images,” a post on Tumblr’s engineering blog read. “However, as the true ‘home of the gif,’ Tumblr isn’t ever giving up on your gif files!” This summer, though, even Tumblr started “experimenting with serving GIFs as MP4 videos” to a “small subset” of users, with the aim of making GIFs load faster. (Company blog posts discussing the change did advise artists that they could opt out of this conversion by adding a single transparent pixel to the first frame of their GIFs, breaking the conversion and thwarting the process.)
GIF 濒临死亡 - The Atlantic
theatlantic.com
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