That makes sense and helps to conceptualize the impact of the bitrate difference. I guess I was under the impression that bitrate would be set at the source and not by the release group, but seems I may have been wrong in that assumption. Thanks for the info!
The date of the upload doesn't matter. What matters is the bitrate given.
9 197 kb/s vs. 11.3 Mb/s means that the FLUX release is packing >20% more image data into the file, so the picture will look crisper, contains more visual information, and is less compressed in general.
Depending on your display you might not actually notice the difference, but on a good, large HD panel you will be able to spot differences here and there, particularly when it comes to fast change of scenes, swift light/dark changes, and rapid movements.
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