ffmpeg-2.8.6

[Fernando de Oliveira]

​http://ffmpeg.org/releases/ffmpeg-2.8.6.tar.bz2

​https://git.videolan.org/?p=ffmpeg.git;a=blob_plain;f=Changelog;hb=refs/tags/n2.8.6

version 2.8.6
- avcodec/jpeg2000dec: More completely check cdef
- avutil/opt: check for and handle errors in av_opt_set_dict2()
- avcodec/flacenc: fix calculation of bits required in case of custom
  sample rate
- avformat: Document urls a bit
- avformat/libquvi: Set default demuxer and protocol limitations
- avformat/concat: Check protocol prefix
- doc/demuxers: Document enable_drefs and use_absolute_path
- avcodec/mjpegdec: Check for end for both bytes in unescaping
- avcodec/mpegvideo_enc: Check for integer overflow in
  ff_mpv_reallocate_putbitbuffer()
- avformat/avformat: Replace some references to filenames by urls
- avcodec/wmaenc: Check ff_wma_init() for failure
- avcodec/mpeg12enc: Move high resolution thread check to before
  initializing threads
- avformat/img2dec: Use AVOpenCallback
- avformat/avio: Limit url option parsing to the documented cases
- avformat/img2dec: do not interpret the filename by default if a IO
  context has been opened
- avcodec/ass_split: Fix null pointer dereference in ff_ass_style_get()
- mov: Add an option to toggle dref opening
- avcodec/gif: Fix lzw buffer size
- avcodec/put_bits: Assert buf_ptr in flush_put_bits()
- avcodec/tiff: Check subsample & rps values more completely
- swscale/swscale: Add some sanity checks for srcSlice* parameters
- swscale/x86/rgb2rgb_template: Fix planar2x() for short width
- swscale/swscale_unscaled: Fix odd height inputs for
  bayer_to_yv12_wrapper()
- swscale/swscale_unscaled: Fix odd height inputs for
  bayer_to_rgb24_wrapper()
- avcodec/aacenc: Check both channels for finiteness
- asfdec_o: check for too small size in asf_read_unknown
- asfdec_o: break if EOF is reached after asf_read_packet_header
- asfdec_o: make sure packet_size is non-zero before seeking
- asfdec_o: prevent overflow causing seekback
- asfdec_o: check avio_skip in asf_read_simple_index
- asfdec_o: reject size > INT64_MAX in asf_read_unknown
- asfdec_o: only set asf_pkt->data_size after sanity checks
- Merge commit '8375dc1dd101d51baa430f34c0bcadfa37873896'
- dca: fix misaligned access in avpriv_dca_convert_bitstream
- brstm: fix missing closing brace
- brstm: also allocate b->table in read_packet
- brstm: make sure an ADPC chunk was read for adpcm_thp
- vorbisdec: reject rangebits 0 with non-0 partitions
- vorbisdec: reject channel mapping with less than two channels
- ffmdec: reset packet_end in case of failure
- avformat/ipmovie: put video decoding_map_size into packet and use it
  in decoder
- avformat/brstm: fix overflow

[Fernando de Oliveira]

Fixed at r16894.