1 Entries are sorted chronologically from oldest to youngest within each release,
2 releases are sorted from youngest to oldest.
8 - ac3enc: add channel coupling support
9 - floating-point sample format support to the ac3, eac3, dca, aac, and vorbis decoders.
10 - H264/MPEG frame-level multi-threading
11 - All av_metadata_* functions renamed to av_dict_* and moved to libavutil
16 - Lots of deprecated API cruft removed
17 - fft and imdct optimizations for AVX (Sandy Bridge) processors
19 - SMPTE 302M AES3 audio decoder
20 - Remove support for quitting ffmpeg with 'q', ctrl+c should be used.
21 - 9bit and 10bit per sample support in the h264 decoder
26 - WebM support in Matroska de/muxer
27 - low overhead Ogg muxing
29 - VP8 de/encoding via libvpx
30 - Demuxer for On2's IVF format
31 - Pictor/PC Paint decoder
33 - libfaad2 wrapper removed
34 - DTS-ES extension (XCh) decoding support
36 - RTSP tunneling over HTTP
37 - RTP depacketization of SVQ3
38 - -strict inofficial replaced by -strict unofficial
39 - ffplay -exitonkeydown and -exitonmousedown options added
40 - native GSM / GSM MS decoder
41 - RTP depacketization of QDM2
42 - ANSI/ASCII art playback system
43 - Lego Mindstorms RSO de/muxer
44 - SubRip subtitle file muxer and demuxer
45 - Chinese AVS encoding via libxavs
46 - ffprobe -show_packets option added
47 - RTP packetization of Theora and Vorbis
48 - RTP depacketization of MP4A-LATM
49 - RTP packetization and depacketization of VP8
51 - Apple HTTP Live Streaming demuxer
54 - G.722 ADPCM audio encoder/decoder
57 - frei0r wrapper filter
58 - change crop filter syntax to width:height:x:y
59 - make the crop filter accept parametric expressions
60 - make ffprobe accept AVFormatContext options
63 - Demuxer for Leitch/Harris' VR native stream format (LXF)
64 - RTP depacketization of the X-QT QuickTime format
65 - SAP (Session Announcement Protocol, RFC 2974) muxer and demuxer
67 - ffmpeg -crop* options removed
68 - transpose filter added
69 - ffmpeg -force_key_frames option added
70 - demuxer for receiving raw rtp:// URLs without an SDP description
71 - single stream LATM/LOAS decoder
73 - Win64 support for optimized asm functions
74 - MJPEG/AVI1 to JPEG/JFIF bitstream filter
75 - ASS subtitle encoder and decoder
76 - IEC 61937 encapsulation for E-AC3, TrueHD, DTS-HD (for HDMI passthrough)
77 - overlay filter added
78 - rename aspect filter to setdar, and pixelaspect to setsar
80 - Mobotix .mxg demuxer
83 - RTP depacketization of QCELP
85 - gradfun filter added
87 - replace the ocv_smooth filter with a more generic ocv filter
88 - Windows Televison (WTV) demuxer
89 - FFmpeg metadata format muxer and demuxer
90 - SubRip (srt) subtitle decoder
91 - floating-point AC-3 encoder added
93 - ffmpeg -copytb option added
95 - Wing Commander IV movies decoder added
97 - Bink version 'b' audio and video decoder
98 - Bitmap Brothers JV playback system
99 - Apple HTTP Live Streaming protocol handler
100 - sndio support for playback and record
101 - Linux framebuffer input device added
102 - Chronomaster DFA decoder
103 - Mobotix MxPEG decoder
104 - AAC encoding via libvo-aacenc
105 - AMR-WB encoding via libvo-amrwbenc
107 - fieldorder video filter added
112 - PB-frame decoding for H.263
113 - deprecated vhook subsystem removed
114 - deprecated old scaler removed
116 - Alpha channel scaler
118 - RTP packetization of H.263
119 - RTP packetization of AMR
120 - RTP depacketization of Vorbis
121 - CorePNG decoding support
122 - Cook multichannel decoding support
123 - introduced avlanguage helpers in libavformat
124 - 8088flex TMV demuxer and decoder
125 - per-stream language-tags extraction in asfdec
126 - V210 decoder and encoder
127 - remaining GPL parts in AC-3 decoder converted to LGPL
129 - SoX native format muxer and demuxer
130 - AMR-NB decoding/encoding, AMR-WB decoding via OpenCORE libraries
132 - Electronic Arts Madcow decoder
133 - DivX (XSUB) subtitle encoder
134 - nonfree libamr support for AMR-NB/WB decoding/encoding removed
135 - experimental AAC encoder
136 - RTP depacketization of ASF and RTSP from WMS servers
137 - RTMP support in libavformat
138 - noX handling for OPT_BOOL X options
140 - IEC-61937 compatible Muxer
142 - Bluray (PGS) subtitle decoder
143 - LPCM support in MPEG-TS (HDMV RID as found on Blu-ray disks)
145 - Core Audio Format demuxer
147 - MD STUDIO audio demuxer
148 - RF64 support in WAV demuxer
149 - MPEG-4 Audio Lossless Coding (ALS) decoder
150 - -formats option split into -formats, -codecs, -bsfs, and -protocols
152 - CDG demuxer and decoder
154 - Auravision Aura 1 and 2 decoders
155 - Deluxe Paint Animation playback system
157 - Adobe Filmstrip muxer and demuxer
158 - RTP depacketization of H.263
159 - Bink demuxer and audio/video decoders
160 - enable symbol versioning by default for linkers that support it
161 - IFF PBM/ILBM bitmap decoder
164 - RTP depacketization of AMR
170 - Kega Game Video (KGV1) decoder
171 - VorbisComment writing for FLAC, Ogg FLAC and Ogg Speex files
172 - RTP depacketization of Theora
173 - HTTP Digest authentication
174 - RTMP/RTMPT/RTMPS/RTMPE/RTMPTE protocol support via librtmp
175 - Psygnosis YOP demuxer and video decoder
176 - spectral extension support in the E-AC-3 decoder
177 - unsharp video filter
178 - RTP hinting in the mov/3gp/mp4 muxer
179 - Dirac in Ogg demuxing
180 - seek to keyframes in Ogg
181 - 4:2:2 and 4:4:4 Theora decoding
182 - 35% faster VP3/Theora decoding
183 - faster AAC decoding
184 - faster H.264 decoding
185 - RealAudio 1.0 (14.4K) encoder
190 - DV50 AKA DVCPRO50 encoder, decoder, muxer and demuxer
191 - TechSmith Camtasia (TSCC) video decoder
192 - IBM Ultimotion (ULTI) video decoder
193 - Sierra Online audio file demuxer and decoder
194 - Apple QuickDraw (qdrw) video decoder
195 - Creative ADPCM audio decoder (16 bits as well as 8 bits schemes)
196 - Electronic Arts Multimedia (WVE/UV2/etc.) file demuxer
197 - Miro VideoXL (VIXL) video decoder
198 - H.261 video encoder
200 - Nullsoft Video (NSV) file demuxer
201 - Shorten audio decoder
203 - Apple Lossless Audio Codec (ALAC) decoder
204 - Winnov WNV1 video decoder
205 - Autodesk Animator Studio Codec (AASC) decoder
206 - Indeo 2 video decoder
207 - Fraps FPS1 video decoder
208 - Snow video encoder/decoder
209 - Sonic audio encoder/decoder
210 - Vorbis audio decoder
211 - Macromedia ADPCM decoder
212 - Duck TrueMotion 2 video decoder
213 - support for decoding FLX and DTA extensions in FLIC files
214 - H.264 custom quantization matrices support
215 - ffserver fixed, it should now be usable again
217 - Real Cooker audio decoder
218 - TrueSpeech audio decoder
219 - WMA2 audio decoder fixed, now all files should play correctly
220 - RealAudio 14.4 and 28.8 decoders fixed
222 - build system improvements
223 - tabs and trailing whitespace removed from the codebase
224 - CamStudio video decoder
225 - AIFF/AIFF-C audio format, encoding and decoding
226 - ADTS AAC file reading and writing
227 - Creative VOC file reading and writing
228 - American Laser Games multimedia (*.mm) playback system
229 - Zip Motion Blocks Video decoder
230 - improved Theora/VP3 decoder
231 - True Audio (TTA) decoder
232 - AVS demuxer and video decoder
234 - Smacker demuxer and decoder
235 - NuppelVideo/MythTV demuxer and RTjpeg decoder
237 - MPEG-2 intra VLC support
238 - MPEG-2 4:2:2 encoder
239 - Flash Screen Video decoder
241 - Chinese AVS decoder
244 - VC-1/WMV3/WMV9 video decoder
247 - VMware video decoder
250 - WavPack lossless audio decoder
251 - Targa (.TGA) picture decoder
252 - Vorbis audio encoder
253 - Delphine Software .cin demuxer/audio and video decoder
254 - Tiertex .seq demuxer/video decoder
256 - TIFF picture encoder and decoder
257 - GIF picture decoder
258 - Intel Music Coder decoder
259 - Zip Motion Blocks Video encoder
261 - Flash Screen Video encoder
262 - Theora encoding via libtheora
265 - GSM-MS encoder and decoder
267 - DXA demuxer and decoder
269 - Gamecube movie (.THP) playback system
270 - Blackfin optimizations
271 - Interplay C93 demuxer and video decoder
272 - Bethsoft VID demuxer and video decoder
275 - V.Flash PTX decoder
276 - RoQ muxer, RoQ audio encoder
277 - Renderware TXD demuxer and decoder
278 - extern C declarations for C++ removed from headers
279 - sws_flags command line option
283 - OS/2 support removed and restored again
286 - additional SPARC (VIS) optimizations
288 - slice-based parallel H.264 decoding
289 - Monkey's Audio demuxer and decoder
290 - AMV audio and video decoder
292 - H.264 PAFF decoding
293 - Nellymoser ASAO decoder
294 - Beam Software SIFF demuxer and decoder
295 - libvorbis Vorbis decoding removed in favor of native decoder
296 - IntraX8 (J-Frame) subdecoder for WMV2 and VC-1
297 - Ogg (Theora, Vorbis and FLAC) muxer
298 - The "device" muxers and demuxers are now in a new libavdevice library
299 - PC Paintbrush PCX decoder
300 - Sun Rasterfile decoder
301 - TechnoTrend PVA demuxer
302 - Linux Media Labs MPEG-4 (LMLM4) demuxer
303 - AVM2 (Flash 9) SWF muxer
304 - QT variant of IMA ADPCM encoder
306 - iPod/iPhone compatible mp4 muxer
308 - MSN TCP Webcam stream demuxer
309 - RL2 demuxer / decoder
312 - non-recursive Makefiles
314 - MAXIS EA XA (.xa) demuxer / decoder
318 - Electronic Arts CMV decoder
319 - Motion Pixels Video decoder
320 - Motion Pixels MVI demuxer
321 - removed animated GIF decoder/demuxer
322 - D-Cinema audio muxer
323 - Electronic Arts TGV decoder
324 - Apple Lossless Audio Codec (ALAC) encoder
326 - floating point PCM encoder/decoder
328 - DV100 AKA DVCPRO HD decoder and demuxer
329 - E-AC-3 support added to AC-3 decoder
330 - Nellymoser ASAO encoder
331 - ASS and SSA demuxer and muxer
332 - liba52 wrapper removed
333 - SVQ3 watermark decoding support
334 - Speex decoding via libspeex
335 - Electronic Arts TGQ decoder
337 - QCELP / PureVoice decoder
339 - hybrid WavPack support
340 - R3D REDCODE demuxer
341 - ALSA support for playback and record
342 - Electronic Arts TQI decoder
343 - OpenJPEG based JPEG 2000 decoder
344 - NC (NC4600) camera file demuxer
345 - Gopher client support
347 - generic metadata API
352 - DV encoder, DV muxer
353 - Microsoft RLE video decoder
354 - Microsoft Video-1 decoder
355 - Apple Animation (RLE) decoder
356 - Apple Graphics (SMC) decoder
357 - Apple Video (RPZA) decoder
359 - Sega FILM (CPK) file demuxer
360 - Westwood multimedia support (VQA & AUD files)
361 - Id Quake II CIN playback support
363 - FLIC playback support
364 - RealVideo 2.0 (RV20) decoder
365 - Duck TrueMotion v1 (DUCK) video decoder
366 - Sierra VMD demuxer and video decoder
367 - MSZH and ZLIB decoder support
371 - rate distortion optimal cbp support
372 - rate distorted optimal ac prediction for MPEG-4
373 - rate distorted optimal lambda->qp support
374 - AAC encoding with libfaac
375 - Sunplus JPEG codec (SP5X) support
376 - use Lagrange multipler instead of QP for ratecontrol
377 - Theora/VP3 decoding support
378 - XA and ADX ADPCM codecs
379 - export MPEG-2 active display area / pan scan
380 - Add support for configuring with IBM XLC
381 - floating point AAN DCT
382 - initial support for zygo video (not complete)
384 - new audio/video parser API
386 - av_read_frame() and av_seek_frame() support
387 - missing last frame fixes
388 - seek by mouse in ffplay
389 - noise reduction of DCT coefficients
390 - H.263 OBMC & 4MV support
391 - H.263 alternative inter vlc support
393 - H.263 slice structured mode
394 - interlaced DCT support for MPEG-2 encoding
395 - stuffing to stay above min_bitrate
396 - MB type & QP visualization
397 - frame stepping for ffplay
398 - interlaced motion estimation
399 - alternate scantable support
400 - SVCD scan offset support
403 - quantizer noise shaping
404 - G.726 ADPCM audio codec
406 - multithreaded/SMP motion estimation
407 - multithreaded/SMP encoding for MPEG-1/MPEG-2/MPEG-4/H.263
408 - multithreaded/SMP decoding for MPEG-2
410 - Metrowerks CodeWarrior suppport
411 - H.263+ custom pcf support
412 - nicer output for 'ffmpeg -formats'
414 - SGI image format, encoding and decoding
415 - H.264 loop filter support
416 - H.264 CABAC support
417 - nicer looking arrows for the motion vector visualization
418 - improved VCD support
419 - audio timestamp drift compensation
420 - MPEG-2 YUV 422/444 support
421 - polyphase kaiser windowed sinc and blackman nuttall windowed sinc audio resample
422 - better image scaling
424 - correctly interleave packets during encoding
425 - VIS optimized motion compensation
426 - intra_dc_precision>0 encoding support
427 - support reuse of motion vectors/MB types/field select values of the source video
428 - more accurate deblock filter
430 - many optimizations and bugfixes
431 - FunCom ISS audio file demuxer and according ADPCM decoding
436 - MPEG-2 video encoding (Michael)
437 - Id RoQ playback subsystem (Mike Melanson and Tim Ferguson)
438 - Wing Commander III Movie (.mve) file playback subsystem (Mike Melanson
440 - Xan DPCM audio decoder (Mario Brito)
441 - Interplay MVE playback subsystem (Mike Melanson)
442 - Duck DK3 and DK4 ADPCM audio decoders (Mike Melanson)
447 - RealAudio 1.0 (14_4) and 2.0 (28_8) native decoders. Author unknown, code from mplayerhq
448 (originally from public domain player for Amiga at http://www.honeypot.net/audio)
449 - current version now also compiles with older GCC (Fabrice)
450 - 4X multimedia playback system including 4xm file demuxer (Mike
451 Melanson), and 4X video and audio codecs (Michael)
452 - Creative YUV (CYUV) decoder (Mike Melanson)
453 - FFV1 codec (our very simple lossless intra only codec, compresses much better
454 than HuffYUV) (Michael)
455 - ASV1 (Asus), H.264, Intel indeo3 codecs have been added (various)
456 - tiny PNG encoder and decoder, tiny GIF decoder, PAM decoder (PPM with
457 alpha support), JPEG YUV colorspace support. (Fabrice Bellard)
458 - ffplay has been replaced with a newer version which uses SDL (optionally)
459 for multiplatform support (Fabrice)
460 - Sorenson Version 3 codec (SVQ3) support has been added (decoding only) - donated
462 - AMR format has been added (Johannes Carlsson)
463 - 3GP support has been added (Johannes Carlsson)
464 - VP3 codec has been added (Mike Melanson)
465 - more MPEG-1/2 fixes
466 - better multiplatform support, MS Visual Studio fixes (various)
467 - AltiVec optimizations (Magnus Damn and others)
468 - SH4 processor support has been added (BERO)
469 - new public interfaces (avcodec_get_pix_fmt) (Roman Shaposhnick)
470 - VOB streaming support (Brian Foley)
471 - better MP3 autodetection (Andriy Rysin)
472 - qpel encoding (Michael)
473 - 4mv+b frames encoding finally fixed (Michael)
474 - chroma ME (Michael)
475 - 5 comparison functions for ME (Michael)
476 - B-frame encoding speedup (Michael)
477 - WMV2 codec (unfinished - Michael)
478 - user specified diamond size for EPZS (Michael)
479 - Playstation STR playback subsystem, still experimental (Mike and Michael)
480 - ASV2 codec (Michael)
481 - CLJR decoder (Alex)
483 .. And lots more new enhancements and fixes.
488 - completely new integer only MPEG audio layer 1/2/3 decoder rewritten
490 - Recoded DCT and motion vector search with gcc (no longer depends on nasm)
491 - fix quantization bug in AC3 encoder
492 - added PCM codecs and format. Corrected WAV/AVI/ASF PCM issues
493 - added prototype ffplay program
494 - added GOB header parsing on H.263/H.263+ decoder (Juanjo)
495 - bug fix on MCBPC tables of H.263 (Juanjo)
496 - bug fix on DC coefficients of H.263 (Juanjo)
497 - added Advanced Prediction Mode on H.263/H.263+ decoder (Juanjo)
498 - now we can decode H.263 streams found in QuickTime files (Juanjo)
499 - now we can decode H.263 streams found in VIVO v1 files(Juanjo)
500 - preliminary RTP "friendly" mode for H.263/H.263+ coding. (Juanjo)
501 - added GOB header for H.263/H.263+ coding on RTP mode (Juanjo)
502 - now H.263 picture size is returned on the first decoded frame (Juanjo)
503 - added first regression tests
504 - added MPEG-2 TS demuxer
505 - new demux API for libav
506 - more accurate and faster IDCT (Michael)
507 - faster and entropy-controlled motion search (Michael)
508 - two pass video encoding (Michael)
509 - new video rate control (Michael)
510 - added MSMPEG4V1, MSMPEGV2 and WMV1 support (Michael)
511 - great performance improvement of video encoders and decoders (Michael)
512 - new and faster bit readers and vlc parsers (Michael)
513 - high quality encoding mode: tries all macroblock/VLC types (Michael)
514 - added DV video decoder
515 - preliminary RTP/RTSP support in ffserver and libavformat
516 - H.263+ AIC decoding/encoding support (Juanjo)
517 - VCD MPEG-PS mode (Juanjo)
518 - PSNR stuff (Juanjo)
519 - simple stats output (Juanjo)
520 - 16-bit and 15-bit RGB/BGR/GBR support (Bisqwit)
525 - some header fixes (Zdenek Kabelac <kabi at informatics.muni.cz>)
526 - many MMX optimizations (Nick Kurshev <nickols_k at mail.ru>)
527 - added configure system (actually a small shell script)
528 - added MPEG audio layer 1/2/3 decoding using LGPL'ed mpglib by
529 Michael Hipp (temporary solution - waiting for integer only
531 - fixed VIDIOCSYNC interrupt
532 - added Intel H.263 decoding support ('I263' AVI fourCC)
533 - added Real Video 1.0 decoding (needs further testing)
534 - simplified image formats again. Added PGM format (=grey
535 pgm). Renamed old PGM to PGMYUV.
536 - fixed msmpeg4 slice issues (tell me if you still find problems)
537 - fixed OpenDivX bugs with newer versions (added VOL header decoding)
538 - added support for MPlayer interface
539 - added macroblock skip optimization
540 - added MJPEG decoder
541 - added mmx/mmxext IDCT from libmpeg2
542 - added pgmyuvpipe, ppm, and ppm_pipe formats (original patch by Celer
543 <celer at shell.scrypt.net>)
544 - added pixel format conversion layer (e.g. for MJPEG or PPM)
545 - added deinterlacing option
547 - MPEG-4 vol header fixes (Jonathan Marsden <snmjbm at pacbell.net>)
548 - ARM optimizations (Lionel Ulmer <lionel.ulmer at free.fr>).
549 - Windows porting of file converter
550 - added MJPEG raw format (input/ouput)
551 - added JPEG image format support (input/output)
556 - fixed some std header definitions (Bjorn Lindgren
557 <bjorn.e.lindgren at telia.com>).
558 - added MPEG demuxer (MPEG-1 and 2 compatible).
560 - added prototype RM demuxer
561 - added AC3 decoding (done with libac3 by Aaron Holtzman)
562 - added decoding codec parameter guessing (.e.g. for MPEG, because the
563 header does not include them)
564 - fixed header generation in MPEG-1, AVI and ASF muxer: wmplayer can now
565 play them (only tested video)
566 - fixed H.263 white bug
567 - fixed phase rounding in img resample filter
568 - add MMX code for polyphase img resample filter
569 - added CPU autodetection
570 - added generic title/author/copyright/comment string handling (ASF and RM
572 - added SWF demux to extract MP3 track (not usable yet because no MP3
574 - added fractional frame rate support
575 - codecs are no longer searched by read_header() (should fix ffserver
581 - BGR24 patch (initial patch by Jeroen Vreeken <pe1rxq at amsat.org>)
582 - fixed raw yuv output
583 - added motion rounding support in MPEG-4
584 - fixed motion bug rounding in MSMPEG4
585 - added B-frame handling in video core
586 - added full MPEG-1 decoding support
587 - added partial (frame only) MPEG-2 support
588 - changed the FOURCC code for H.263 to "U263" to be able to see the
589 +AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with
590 this +codec ;) (JuanJo).
591 - Halfpel motion estimation after MB type selection (JuanJo)
592 - added pgm and .Y.U.V output format
593 - suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or
595 - added pgmpipe I/O format (original patch from Martin Aumueller
596 <lists at reserv.at>, but changed completely since we use a format
597 instead of a protocol)
602 - added H.263/MPEG-4/MSMPEG4 decoding support. MPEG-4 decoding support
603 (for OpenDivX) is almost complete: 8x8 MVs and rounding are
604 missing. MSMPEG4 support is complete.
605 - added prototype MPEG-1 decoder. Only I- and P-frames handled yet (it
606 can decode ffmpeg MPEGs :-)).
607 - added libavcodec API documentation (see apiexample.c).
608 - fixed image polyphase bug (the bottom of some images could be
610 - added support for non clipped motion vectors (decoding only)
611 and image sizes non-multiple of 16
612 - added support for AC prediction (decoding only)
613 - added file overwrite confirmation (can be disabled with -y)
614 - added custom size picture to H.263 using H.263+ (Juanjo)
619 - added MSMPEG4 (aka DivX) compatible encoder. Changed default codec
620 of AVI and ASF to DIV3.
621 - added -me option to set motion estimation method
622 (default=log). suppressed redundant -hq option.
623 - added options -acodec and -vcodec to force a given codec (useful for
626 - improved dct_quantize speed
627 - factorized some motion estimation code
632 - removing grab code from ffserver and moved it to ffmpeg. Added
633 multistream support to ffmpeg.
634 - added timeshifting support for live feeds (option ?date=xxx in the
636 - added high quality image resize code with polyphase filter (need
637 mmx/see optimization). Enable multiple image size support in ffserver.
638 - added multi live feed support in ffserver
639 - suppressed master feature from ffserver (it should be done with an
640 external program which opens the .ffm url and writes it to another
642 - added preliminary support for video stream parsing (WAV and AVI half
643 done). Added proper support for audio/video file conversion in
645 - added preliminary support for video file sending from ffserver
646 - redesigning I/O subsystem: now using URL based input and output
648 - added WAV format support
649 - added "tty user interface" to ffmpeg to stop grabbing gracefully
650 - added MMX/SSE optimizations to SAD (Sums of Absolutes Differences)
651 (Juan J. Sierralta P. a.k.a. "Juanjo" <juanjo at atmlab.utfsm.cl>)
652 - added MMX DCT from mpeg2_movie 1.5 (Juanjo)
653 - added new motion estimation algorithms, log and phods (Juanjo)
654 - changed directories: libav for format handling, libavcodec for
660 - added stereo in MPEG audio encoder
665 - added 'high quality' mode which use motion vectors. It can be used in
666 real time at low resolution.
667 - fixed rounding problems which caused quality problems at high
668 bitrates and large GOP size
671 version 0.3.2: small fixes
677 version 0.3.1: added avi/divx support
680 - added MPEG-4 codec compatible with OpenDivX. It is based on the H.263 codec
681 - added sound for flash format (not tested)
684 version 0.3: initial public release