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by can16358p 1363 days ago
A bad bit might have no visible effect at all (e.g. Affecting part of EXIF metadata, or a totally black pixel turning again very close to total black) or can corrupt the whole image (flipping a bit in the file header or cosine quantization table).

It totally depends.
1 comments
mahathu 1363 days ago
As a total layman when it comes to storage: Don't they use forward correcting codes to make sure a single bad bit can reliably be detected and flipped without affecting the data at all? Or are these used only for data transmission?
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d110af5ccf 1363 days ago
The vast majority of file formats do not do such things. Such a concern is (typically) out of scope for that layer.

Even most data transmission components don't use forward correcting codes. They typically just have error detection.

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