Is there any threshold where bitmap compression stops, considering feedback input? -

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i compress image jpeg format using quality factor. again use newly compressed image , again compress using same quality factor.

every time result different.

is there threshold compression stop? or continue compress compressed image? (keeping same quality factor throughout)

i recommend reading on lossy compression. specifically:

the original contains amount of information; there lower limit size of file can carry information. intuitive example, people know compressed zip file smaller original file, repeatedly compressing file not reduce size nothing , in fact increase size.

also, understanding, makes sense results not repeatable. if compression repeatable (aka deterministic), mean reversible, make lossless compression, jpeg not.


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