Log Message:
version 3.2.1:
- avcodec/aac_adtstoasc_bsf: validate and forward extradata if the stream is \ 
already ASC
- mss2: only use error correction for matching block counts
- softfloat: decrease MIN_EXP to cover full float range
- libopusdec: default to stereo for invalid number of channels
- flvdec: require need_context_update when changing codec id
- pgssubdec: only set w/h/linesize when allocating data
- sbgdec: prevent NULL pointer access
- rmdec: validate block alignment
- smacker: limit recursion depth of smacker_decode_bigtree
- mxfdec: fix NULL pointer dereference in mxf_read_packet_old
- ffmdec: validate codec parameters
- avformat/mpeg: Adjust vid probe threshold to correct mis-detection
- avcodec/ass_split: Change order of operations in ass_split_section()
- avcodec/rawdec: check for side data before checking its size
- avcodec/avpacket: fix leak on realloc in av_packet_add_side_data()
- avformat/apngenc: use the stream parameters extradata if available
- Revert "apngdec: use side data to pass extradata to the decoder"
- ffprobe: fix crash in case -of is specified with an empty string
- libavcodec/exr : fix channel size calculation for uint32 channel
- exr: fix out-of-bounds read
- libschroedingerdec: fix leaking of framewithpts
- libschroedingerdec: don't produce empty frames
- dds: limit 4 bpp handling to AV_PIX_FMT_PAL8
- mlz: limit next_code to data buffer size
- softfloat: handle -INT_MAX correctly
- filmstripdec: correctly check image dimensions
- pnmdec: make sure v is capped by maxval
- smvjpegdec: make sure cur_frame is not negative
- icodec: correctly check avio_read return value
- icodec: fix leaking pkt on error
- dvbsubdec: fix division by zero in compute_default_clut
- proresdec_lgpl: explicitly check coff[3] against slice_data_size
- escape124: reject codebook size 0
- mpegts: prevent division by zero
- matroskadec: fix NULL pointer dereference in webm_dash_manifest_read_header
- mpegaudio_parser: don't return AVERROR_PATCHWELCOME
- mxfdec: fix NULL pointer dereference
- lzf: update pointer p after realloc
- diracdec: check return code of get_buffer_with_edge
- diracdec: clear slice_params_num_buf on allocation failure
- diracdec: use correct buffer for slice_params_buf realloc
- ppc: pixblockdsp: do unaligned block accesses correctly again
- avformat: close parser if codec changed
- fate: add streamcopy test for apng
- apngdec: use side data to pass extradata to the decoder
- mov: immediately return from mov_fix_index without old index entries
- interplayacm: increase bitstream buffer size by AV_INPUT_BUFFER_PADDING_SIZE
- interplayacm: validate number of channels
- interplayacm: check for too large b
- doc: fix spelling errors
- configure: make sure LTO does not optimize out the test functions
- fate: add apng encoding/muxing test
- apng: use side data to pass extradata to muxer
- avcodec/mpeg4videodec: Workaround interlaced mpeg4 edge MC bug
- avcodec/mpegvideo: Fix edge emu buffer overlap with interlaced mpeg4
- avcodec/rv40: Test remaining space in loop of get_dimension()
- avcodec/ituh263dec: Avoid spending a long time in slice sync
- avcodec/movtextdec: Add error message for tsmb_size check
- avcodec/movtextdec: Fix tsmb_size check==0 check
- avcodec/movtextdec: Fix potential integer overflow
- ffmpeg: Fix bsf corrupting merged side data
- avcodec/sunrast: Fix input buffer pointer check
- avcodec/tscc:  Check side data size before use
- avcodec/rscc: Fix constant
- avcodec/rawdec: Check side data size before use
- avcodec/rscc: Check side data size before use
- avcodec/msvideo1: Check side data size before use
- avcodec/qpeg:  Check side data size before use
- avcodec/qtrle:  Check side data size before use
- avcodec/msrle:  Check side data size before use
- avcodec/kmvc:  Check side data size before use
- avcodec/idcinvideo: Check side data size before use
- avcodec/cinepak: Check side data size before use
- avcodec/8bps: Check side data size before use
- avformat/flvdec: Fix regression losing streams
- avformat/hls: Add missing error check for avcodec_parameters_copy()
- avformat/hls: Fix probing mpegts audio streams that use probing
- avformat/hls: Factor copying stream info to a separate function