n4.4.6
avcodec/adpcm_ima_swf: fix frame size to 4096
fate: update reference files after the recent dash manifest muxer changes
lavf/mux: rewrite guessing the packet duration
avformat/fitsenc: write DATAMIN/DATAMAX to encoded output
Merge commit '896fe15dbb7b78de495c4a7dd75e7faec66778da'
avcodec/snowenc: Fix visual weight calculation
avcodec/j2kenc: Fix funky bpno errors on decoding
Merge commit 'f919cc7df6ab844bc12f89fe7bef4fb915a47725'
tests: Rename vsynth2 to vsynth_lena