+version 10:
+- av_strnstr
+- support ID3v2 tags in ASF files
+- reference-counting for AVFrame and AVPacket data
+- avconv now fails when input options are used for output file
+ or vice versa
+- new avconv options -filter_script and -filter_complex_script, which allow a
+ filtergraph description to be read from a file
+- uniform options syntax across all filters
+- new interlace filter
+- JPEG 2000 decoder
+- new asetpts filter (same as setpts, but for audio)
+- new trim and atrim filters
+- avconv -t and -ss (output-only) options are now sample-accurate when
+ transcoding audio
+- Matroska muxer can now put the index at the beginning of the file.
+- avconv -deinterlace option removed, the yadif filter should be used instead
+- Apple Intermediate Codec decoder
+- Escape 130 video decoder
+- support for slice multithreading in libavfilter
+- VC-1 interlaced B-frame support
+- support for WavPack muxing (raw and in Matroska)
+- Go2Webinar decoder
+- WavPack encoding through libwavpack
+- Added the -n parameter to avconv
+- RTMP seek support
+- when transcoding with avconv (i.e. not streamcopying), -ss is now accurate
+ even when used as an input option. Previous behavior can be restored with
+ the -noaccurate_seek option.
+- avconv -t option can now be used for inputs, to limit the duration of
+ data read from an input file
+- Voxware MetaSound decoder
+- WebP decoder
+- Error Resilient AAC syntax (ER AAC LC) decoding
+- Low Delay AAC (ER AAC LD) decoding
+- mux chapters in ASF files
+- Opus in Ogg demuxing
+- Enhanced Low Delay AAC (ER AAC ELD) decoding (no LD SBR support)
+- F4V muxer
+- HNM version 4 demuxer and video decoder
+- HEVC decoder
+- raw HEVC, HEVC in MOV/MP4, HEVC in Matroska, HEVC in MPEG-TS demuxing
+- remove avplay -vismv option, which has not worked for a long time
+- Live HDS muxer
+- setsar/setdar filters now support variables in ratio expressions
+- dar variable in the scale filter now returns the actual DAR (i.e. a * sar)
+- VP9 decoder
+- support for decoding through VDPAU in avconv (the -hwaccel option)
+- remove mp3_header_(de)compress bitstream filters
+
+
+version 9:
+- av_basename and av_dirname
+- adobe and limelight publisher authentication in RTMP
+- VDPAU hardware acceleration through normal hwaccel
+- SRTP support
+
+
+version 9_beta3:
+- ashowinfo audio filter
+- 24-bit FLAC encoding
+- audio volume filter
+- deprecated the avconv -vol option. the volume filter is to be used instead.
+- multi-channel ALAC encoding up to 7.1
+- TAK demuxer, parser, and decoder
+- adaptive frame-level multithreading for H.264
+
+
+version 9_beta2:
+- metadata (INFO tag) support in WAV muxer
+- support for building DLLs using MSVC
+- remove avserver daemon mode
+- support building on the Plan 9 operating system
+- ffv1: support version 1.3
+
+
+version 9_beta1:
projects / ffmpeg / blobdiff