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Cake day: June 6th, 2024

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  • I can try it again, but what I did was compare h265 to SVT-AV1 in ffmpeg, using a couple different clips of different styles (including a video from my phone and some ripped blu-ray movies). I used “constant quality / variable bitrate settings, and ran each file with a variety of settings for both encoders. I judged the videos with a quality comparison tool ffmpeg has, and I also took subjective notes when I could tell the difference.

    I found AV1 did better at very low quality (when it was firmly into the region where it was visibly different, AV1 did have better quality per bitrate).

    But when trying to produce high-quality clips, AV1 was never able to produce a clip that matched the quality score of h265, even when the bitrate of the AV1 file was higher.








  • their base numbering system would be different than ours, their symbols for numbers would be different, their entire understanding of math and how to calculate stuff could be wildly different

    The neat thing about math is it’s built upon universal truths that exist independently of how you describe them. 1+1=2 regardless of how you represent those numbers. Even among humans we have plenty of different ways of describing numbers.

    Also, the best thing about science is that physics works the way it does regardless of how you describe it. An atom of hydrogen will always have the same spectral peaks, regardless of what units you describe those peaks in.

    It’s these kinds of things we consider when trying to communicate with aliens. Take a look at:

    https://en.wikipedia.org/wiki/Pioneer_plaque

    https://en.wikipedia.org/wiki/Voyager_Golden_Record

    https://en.wikipedia.org/wiki/Arecibo_message

    These messages will probably never be received, even if there is intelligent life out there. But if something intelligent does find these messages, they will probably determine they are artificial, and hopefully manage to decode some of it.