Also fix AARCH64 build to be neon optimised where available, this leads to a 72% improvement in decoding speed.
Differential Revision: https://phabricator.services.mozilla.com/D64706
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extra : moz-landing-system : lando
This partially reverts commit e99d6caa3a3778c0bb1f2fa9f2b4222bba2eeafereverts
FFmpeg requires specific default values in AVCodecContext to be set. It is quickly becoming too complicated to track what those should be. AVOptions automatically set all the values to their default.
MozReview-Commit-ID: lDFeUvwTMg
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extra : rebase_source : 04c5df11e485bcbae4fbf41d8b5ed512316b4d1b
Saving is disappointing, only 41kiB out of a 2222kiB
MozReview-Commit-ID: JNz9PxHTLUp
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extra : rebase_source : b68ed5c3784c76d840438d1d5e369c95a8abd9a7