Watching a 500mb re-encode of a JAV film is like listening to Beethoven on a cell phone speaker in a subway tunnel. You get the gist, but you miss everything that makes it good.
A standard 120-minute video should generally be at least 2GB–4GB for decent 1080p. Anything under 1GB is likely heavily compressed.
Higher bitrates generally mean less compression and better image clarity, especially in high-motion scenes.
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