- Removal of the custom atomic API (5cc0057f49, see http://ffmpeg.org/pipermail/ffmpeg-devel/2017-March/209003.html)
- new bitstream reader (see http://ffmpeg.org/pipermail/ffmpeg-devel/2017-April/209609.html)
- use of the bsf instead of our parser for vp9 superframes (see fa1749dd34)
-- use of the new AVFrame crop fields in h264/hevc/theora (see https://ffmpeg.org/pipermail/ffmpeg-devel/2017-May/211239.html)
- - a02ae1c683 hevcdec: export cropping information instead of handling it internally
- - 4fded0480f h264dec: be more explicit in handling container cropping
- - c3e84820d6 h264dec: export cropping information instead of handling it internally
- - 1202b71269 theora: export cropping information instead of handling it internally
Collateral damage that needs work locally:
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