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version <next>
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- TechSmith Camtasia (TSCC) video decoder
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- IBM Ultimotion (ULTI) video decoder
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- Sierra Online audio file demuxer and decoder
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- Apple QuickDraw (qdrw) video decoder
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- Creative ADPCM audio decoder
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version 0.4.9-pre1:
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- DV encoder, DV muxer
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- Microsoft RLE video decoder
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- Microsoft Video-1 decoder
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- Apple Animation (RLE) decoder
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- Apple Graphics (SMC) decoder
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- Apple Video (RPZA) decoder
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- Cinepak decoder
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- Sega FILM (CPK) file demuxer
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- Westwood multimedia support (VQA & AUD files)
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- Id Quake II CIN playback support
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- 8BPS video decoder
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- FLIC playback support
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- RealVideo 2.0 (RV20) decoder
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- Duck TrueMotion v1 (DUCK) video decoder
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- Sierra VMD demuxer and video decoder
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- MSZH and ZLIB decoder support
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- SVQ1 video encoder
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- AMR-WB support
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- PPC optimisations
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- rate distortion optimal cbp support
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- rate distorted optimal ac prediction for mpeg4
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- rate distorted optimal lambda->qp support
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- AAC encoding with libfaac
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- Sunplus JPEG codec (SP5X) support
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- use lagrange multipler instead of qp for ratecontrol
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- theora/VP3 decoding support
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- XA and ADX ADPCM codecs
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- export mpeg2 active display area / pan scan
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- Add support for configuring with IBM XLC
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- floating point AAN DCT
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- initial support for zygovideo (not complete)
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- rgb ffv1 support
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- new audio/video parser API
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- av_log() system
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- av_read_frame() and av_seek_frame() support
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- missing last frame fixes
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- seek by mouse in ffplay
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- noise reduction of dct coefficients
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- h263 OBMC & 4MV support
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- h263 alternative inter vlc support
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- h263 loop filter
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- h263 slice structured mode
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- interlaced DCT support for MPEG2 encoding
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- stuffing to stay above min_bitrate
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- mb type & qp vissualization
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- frame stepping for ffplay
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- interlaced motion estimation
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- alternate scantable support
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- SVCD scan offset support
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- closed gop support
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- SSE2 fdct
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- quantizer noise shaping
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- G.726 ADPCM audio codec
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- MS ADPCM encoding
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- multithreaded/SMP motion estimation
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- multithreaded/SMP encoding for MPEG1/MPEG2/MPEG4/H263
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- multithreaded/SMP decoding for MPEG2
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- FLAC decoder
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- Metrowerks CodeWarrior suppport
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- h263+ custom pcf support
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- nicer output for 'ffmpeg -formats'
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- matroska demuxer
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- SGI image format, encoding and decoding
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- h264 loop filter support
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- h264 CABAC support
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- nicer looking arrows for the motion vector vissualization
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- improved VCD support
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- audio timestamp drift compensation
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- mpeg2 YUV 422/444 support
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- polyphase kaiser windowed sinc and blackman nuttall windowed sinc audio resample
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- better image scaling
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- h261 support
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- correctly interleave packets during encoding
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- VIS optimized motion compensation
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- intra_dc_precission>0 encoding support
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- support reuse of motion vectors/mb types/field select values of the source video
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- more accurate deblock filter
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- padding support
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- many optimizations and bugfixes
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version 0.4.8:
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- MPEG2 video encoding (Michael)
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- Id RoQ playback subsystem (Mike Melanson and Tim Ferguson)
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- Wing Commander III Movie (.mve) file playback subsystem (Mike Melanson
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  and Mario Brito)
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- Xan DPCM audio decoder (Mario Brito)
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- Interplay MVE playback subsystem (Mike Melanson)
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- Duck DK3 and DK4 ADPCM audio decoders (Mike Melanson)
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version 0.4.7:
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- RealAudio 1.0 (14_4) and 2.0 (28_8) native decoders. Author unknown, code from a mplayerhq
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  (originally from public domain player for Amiga at http://www.honeypot.net/audio)
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- Current version now also compiles with older GCC (Fabrice)
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- 4X multimedia playback system including 4xm file demuxer (Mike
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  Melanson), and 4X video and audio codecs (Michael)
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- Creative YUV (CYUV) decoder (Mike Melanson)
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- FFV1 codec (our very simple lossless intra only codec, compresses much better
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  then huffyuv) (Michael)
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- ASV1 (Asus), H.264, Intel indeo3 codecs has been added (Various)
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- Tiny PNG encoder and decoder, tiny GIF decoder, PAM decoder (PPM with
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  alpha support), JPEG YUV colorspace support. (Fabrice Bellard)
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- ffplay has been replaced with a newer version which uses SDL (optionally)
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  for multi platform support (fabrice)
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- Sorenson Version 3 codec (SVQ3) support has been added (decoding only) - donated
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  by anonymous
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- AMR format has been added (Johannes Carlsson)
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- 3gp support has been added (Johannes Carlsson)
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- VP3 codec has been added (Mike Melanson)
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- more MPEG-1/2 fixes
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- Better Multi platform support, MS Visual Studio fixes (various)
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- Altivec optimizations (Magnus Damn and others)
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- SH4 processor support has been added (BERO)
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- New public interfaces (avcodec_get_pix_fmt) (Roman Shaposhnick)
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- VOB Streaming support (Brian Foley)
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- Better MP3 Autodetection (Andriy Rysin)
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- qpel encoding (Michael)
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- 4mv+b frames encoding finally fixed (Michael)
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- chroma ME (Michael)
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- 5 comparission functions for ME (Michael)
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- b frame encoding speedup (Michael)
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- wmv2 codec (unfinished - Michael)
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- user specified diamond size for EPZS (Michael)
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- Playstation STR playback subsystem, still experimental (Mike and Michael)
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- ASV2 codec (Michael)
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- CLJR decoder (Alex)
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.. And lots more new enhances and fixes.
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version 0.4.6:
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- completely new integer only mpeg audio layer 1/2/3 decoder rewritten
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  from scratch.
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- recoded dct and motion vector search with gcc (no longer depends on
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  nasm).
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- fix quantization bug in AC3 encoder.
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- added PCM codecs and format. Corrected wav/avi/asf pcm issues.
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- added prototype ffplay program.
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- added GOB header parsing on H.263/H.263+ decoder. (Juanjo)
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- bug fix on MCBPC tables of H.263. (Juanjo)
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- bug fix on DC coefficients of H.263. (Juanjo)
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- added Advanced Prediction Mode on H.263/H.263+ decoder. (Juanjo)
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- now we can decode H.263 streams found on QuickTime files. (Juanjo)
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- now we can decode H.263 streams found on VIVO v1 files.(Juanjo)
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- preliminary RTP "friendly" mode for H.263/H.263+ coding. (Juanjo)
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- added GOB header for H.263/H.263+ coding on RTP mode. (Juanjo)
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- now H.263 picture size is returned on the first decoded frame. (Juanjo)
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- added first regression tests
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- added MPEG2 TS demux
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- new demux API for libav
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- more accurate and faster IDCT (Michael)
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- faster and entropy controlled motion search (Michael)
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- two pass video encoding (Michael)
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- new video rate control (Michael)
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- added MSMPEG4V1, MSMPEGV2 and WMV1 support (Michael)
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- great performance improvement of video encoders and decoders (Michael)
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- new and faster bit readers and vlc parsers (Michael)
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- high quality encoding mode : tries all macroblock/VLC types (Michael)
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- added DV video decoder
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- preliminary RTP/RTSP support in ffserver and libavformat
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- H.263+ AIC decoding/encoding support. (Juanjo)
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- VCD MPEG-PS mode. (Juanjo)
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- PSNR stuff. (Juanjo)
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- Simple stats output. (Juanjo)
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- 16-bit and 15-bit rgb/bgr/gbr support (Bisqwit)
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version 0.4.5:
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- some header fixes (Zdenek Kabelac &lt;kabi@informatics.muni.cz&gt;).
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- many MMX optimizations (Nick Kurshev &lt;nickols_k@mail.ru&gt;).
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- added configure system (actually a small shell script).
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- added mpeg audio layer 1/2/3 decoding using LGPL'ed mpglib by
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  Michael Hipp (temporary solution - waiting for integer only
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  decoder).
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- fixed VIDIOCSYNC interrupt.
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- added Intel H263 decoding support ('I263' avi fourCC)
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- added Real Video 1.0 decoding (needs further testing).
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- simplified image formats again. Added PGM format (=grey
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  pgm). Renamed old PGM to PGMYUV.
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- fixed msmpeg4 slice issues (tell me if you still find problems).
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- fixed opendivx bugs with newer versions (added VOL header decoding).
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- added support for mplayer interface.
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- added macroblock skip optimization.
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- added MJPEG decoder.
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- added mmx/mmxext idct from libmpeg2.
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- added pgmyuvpipe, ppm, and ppm_pipe formats (original patch by Celer
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  &lt;celer@shell.scrypt.net&gt;).
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- added pixel format convertion layer (e.g. for MJPEG or PPM).
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- added deinterlacing option.
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- mpeg1/2 fixes.
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- mpeg4 vol header fixes (Jonathan Marsden &lt;snmjbm@pacbell.net&gt;).
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- ARM optimizations (Lionel Ulmer &lt;lionel.ulmer@free.fr&gt;).
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- Windows porting of file converter.
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- added MJPEG raw format (input/ouput).
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- added JPEG image format support (input/output).
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version 0.4.4:
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- fixed some std header definitions (Bjorn Lindgren
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  &lt;bjorn.e.lindgren@telia.com&gt;).
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- added mpeg demux (mpeg 1 and 2 compatible).
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- added ASF demux.
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- added prototype RM demux.
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- added AC3 decoding (done with libac3 by Aaron Holtzman).
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- added decoding codec parameter guessing (.e.g. for mpeg, because the
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  header does not include them).
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- fixed header generation in mpeg1, AVI and ASF mux : wmplayer can now
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  play them (only tested video).
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- fixed h263 white bug.
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- fixed phase rounding in img resample filter.
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- add mmx code for polyphase img resample filter.
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- added CPU autodetect.
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- added generic title/author/copyright/comment string handling (ASF and RM use them).
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- added SWF demux to extract MP3 track (not usable yet because no MP3
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  decoder).
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- added fractional frame rate support.
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- codecs are no longer searched by read_header() (should fix ffserver
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  segfault).
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version 0.4.3:
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- BGR24 patch (initial patch by Jeroen Vreeken &lt;pe1rxq@amsat.org&gt;).
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- fixed raw yuv output.
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- added motion rounding support in MPEG4.
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- fixed motion bug rounding in MSMPEG4.
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- added B frame handling in video core.
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- added full MPEG1 decoding support.
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- added partial (frame only) MPEG2 support.
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- changed the FOURCC code for H.263 to "U263" to be able to see the
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+AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with
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this +codec ;) (JuanJo).
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- Halfpel motion estimation after mb type selection (JuanJo).
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- added pgm and .Y.U.V output format.
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- suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or
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  output.
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- added pgmpipe I/O format (original patch from Martin Aumueller
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  &lt;lists@reserv.at&gt;, but changed completely since we use a format
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  instead of a protocol).
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version 0.4.2:
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- added H263/MPEG4/MSMPEG4 decoding support. MPEG4 decoding support
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  (for openDIVX) is almost complete: 8x8 MVs and rounding are
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  missing. MSMPEG4 support is complete.
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- added prototype MPEG1 decoder. Only I and P frames handled yet (it
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  can decode ffmpeg mpegs :-)).
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- added libavcodec API documentation (see apiexample.c).
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- fixed image polyphase bug (the bottom of some images could be
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  greenish).
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- added support for non clipped motion vectors (decoding only)
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  and image sizes non multiple of 16.
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- added support for AC prediction (decoding only).
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- added file overwrite confirmation (can be disabled with -y).
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- Added custom size picture to H.263 using H.263+ (Juanjo).
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version 0.4.1:
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- added MSMPEG4 (aka DIVX) compatible encoder. Changed default codec
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  of avi and asf to DIV3.
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- added -me option to set motion estimation method
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  (default=log). suppressed redundant -hq option.
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- added options -acodec and -vcodec to force a given codec (useful for
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  AVI for example).
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- fixed -an option.
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- improved dct_quantize speed.
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- factorized some motion estimation code.
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version 0.4.0:
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- removing grab code from ffserver and moved it to ffmpeg. Added multi
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  stream support to ffmpeg.
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- added timeshifting support for live feeds (option ?date=xxx in the
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  URL).
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- added high quality image resize code with polyphase filter (need
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  mmx/see optimisation). Enable multiple image size support in ffserver.
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- added multi live feed support in ffserver.
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- suppressed master feature from ffserver (it should be done with an
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  external program which opens the .ffm url and writes it to another
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  ffserver).
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- added preliminary support for video stream parsing (wav and avi half
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  done). Added proper support for audio/video file convertion in
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  ffmpeg.
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- added preliminary support for video file sending from ffserver.
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- redesigning I/O subsystem : now using URL based input and output
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  (see avio.h).
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- added wav format support.
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- added "tty user interface" to ffmpeg to stop grabbing gracefully.
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- added MMX/SSE optimizations to SAD (Sums of Absolutes Diferences)
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  (Juan J. Sierralta P. a.k.a. "Juanjo" &lt;juanjo@atmlab.utfsm.cl&gt;).
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- added MMX DCT from mpeg2_movie 1.5 (Juanjo).
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- added new motion estimation algorithms, log and phods (Juanjo).
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- changed directories : libav for format handling, libavcodec for
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  codecs.
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version 0.3.4:
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- added stereo in mpeg audio encoder.
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version 0.3.3:
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- added 'high quality' mode which use motion vectors. It can be used in
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  real time at low resolution.
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- fixed rounding problems which caused quality problems at high
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  bitrates and large gop size.
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version 0.3.2: small fixes
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- asf fixes
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- put_seek bug fix
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version 0.3.1: added avi/divx support
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- added avi support
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- added mpeg4 codec compatible with open divx. It is based on the h263
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  codec.
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- added sound for flash format (not tested)
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version 0.3: initial public release