Merge commit 'f1a2364cebe472a98a5ea157071f4eee4429ce9f' into release/1.1
* commit 'f1a2364cebe472a98a5ea157071f4eee4429ce9f': Update Changelog for 9.12 Conflicts: Changelog Not merged, as the changelog does not apply to FFmpeg like this Merged-by: Michael Niedermayer <michaelni@gmx.at>
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