[xavier242]

Reference:
Guns N' Roses 2023-06-23 Glastonbury Festival, Worthy Farm, Pilton, UK (PRO_HD)

This will be a locked work-in-process thread and I'll unlock it when I'm done (for questions and comments).

There is a strong belief that any re-encoding (re-compression) of video is bad. This is incorrect. The answer is that it depends on several variables.

Know that FEED videos occasionally appear on the internet. They have been re-encoded 3 or more times already. These are high bitrate, high quality streams that the broadcast and webcast industries use to create the resolutions and bitrates they send to viewers.

I have yet to see an excellent 1080p 50fps version of the Guns N' Roses Glastonbury 2023 gig. The DARKFLIX release is not great. There's not much detail and it's about 4x the size it should be for that level of quality. Excellent would be clear, sharp, 50fps video. As it's almost 2-1/2 hours, about 20GB would be required for 1080p50.

23.976fps is great for movies, dramas, sitcoms, scifi as the low framerate adds to the cinematic effect and pulls you into the narrative. For live performances and sports, a higher framerate and bitrate helps bring you to the venue (IMO).

You need to start with the best quality you can find. None of the tools including Topaz VEAI can do much if the source is lacking detail. In this case, the 24.9GB 3840x2160 video posted to bittorrent has the best quality and sufficient detail. I'd say it's a FEED stream capture, but the bitrate is low for the resolution (unless the industry has lowered their standards). Bits/(Pixel*Frame) is only 0.058 (barely adequate for H265 4K video).

Mediainfo says 50fps but that's been known to be inaccurate with interlaced video. A lot of 50fps content is really 25fps with each frame repeated once (fake 50fps). Real video at 25i coming from a videocamera is 50 interlaced fields per second shifted one pixel up and down, alternating with each field.

If you open this up in a good editor like VideoRedo, it will show each field. This is the first step as the rest of the process depends on what you find. You need to determine if you have fake 50fps or real 50fps.

...to be continued

After analysis with VRD it's actually 3840x2160p 50fps (progressive video), so the above is "for reference" should you come across an interlaced HD video.