From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
FFmpeg Logo new.svg
FFmpeg 4.4 screenshot.png
FFmpeg running on Arch Linux
Original author(s)Fabrice Bellard
Developer(s)FFmpeg team
Initial releaseDecember 20, 2000; 20 years ago (2000-12-20)[1]
Stable release4.4 (April 8, 2021; 3 months ago (2021-04-08)[2]) [±]
Preview releaseGit [±]
Written inC and Assembly[3]
Operating systemVarious, including Windows, macOS, and Linux (executable programs are only available from third parties, as the project only distributes source code)[4][5]
Platformx86, ARM, PowerPC, MIPS, DEC Alpha, Blackfin, AVR32, SH-4, and SPARC; may be compiled for other desktop computers
TypeMultimedia framework
LicenseLGPL-2.1-or-later, GPL-2.0-or-later
Unredistributable if compiled with any software with a license incompatible with the GPL[6]

FFmpeg is a free and open-source software project consisting of a large suite of libraries and programs for handling video, audio, and other multimedia files and streams. At its core is the FFmpeg program itself, designed for command-line-based processing of video and audio files. It is widely used for format transcoding, basic editing (trimming and concatenation), video scaling, video post-production effects and standards compliance (SMPTE, ITU).

FFmpeg includes libavcodec, an audio/video codec library used by many commercial and free software products, libavformat (Lavf),[7] an audio/video container mux and demux library, and the core ffmpeg command-line program for transcoding multimedia files.

FFmpeg is part of the workflow of hundreds of other software projects, and its libraries are a core part of software media players such as VLC, and has been included in core processing for YouTube and iTunes. Codecs for the encoding and/or decoding of most audio and video file formats is included, making it highly useful for the transcoding of common and uncommon media files into a single common format.

The name of the project is inspired by the MPEG video standards group, together with "FF" for "fast forward".[8] The logo uses a zigzag pattern that shows how MPEG video codecs handle entropy encoding.[9]

FFmpeg is published under the LGPL-2.1-or-later or GPL-2.0-or-later (depending on which options are enabled).[10]


The project was started by Fabrice Bellard[10] (using the pseudonym "Gérard Lantau") in 2000, and was led by Michael Niedermayer from 2004 until 2015.[11] Some FFmpeg developers were also part of the MPlayer project.

On January 10, 2014, two Google employees announced that over 1000 bugs had been fixed in FFmpeg during the previous two years by means of fuzz testing.[12]

In January 2018, the ffserver command-line program – a long-time component of FFmpeg – was removed.[13] The developers had previously deprecated the program citing high maintenance efforts due to its use of internal application programming interfaces.[14]

The project publishes a new release every three months on average. While release versions are available from the website for download, FFmpeg developers recommend that users compile the software from source using the latest build from their source code Git version control system.[15]

Codec history[edit]

Two video coding formats with corresponding codecs and one container format have been created within the FFmpeg project so far. The two video codecs are the lossless FFV1, and the lossless and lossy Snow codec. Development of Snow has stalled, while its bit-stream format has not been finalized yet, making it experimental since 2011. The multimedia container format called NUT is no longer being actively developed, but still maintained.[16]

In summer 2010, Fiona Glaser, Ronald Bultje, and David Conrad of the FFmpeg Team announced the ffvp8 decoder. Through testing, they determined that ffvp8 was faster than Google's own libvpx decoder.[17][18] Starting with version 0.6, FFmpeg also supported WebM and VP8.[19]

In October 2013, a native VP9[20] and the OpenHEVC decoder, an open source High Efficiency Video Coding (HEVC) decoder, were added to FFmpeg.[21] In 2016 the native AAC encoder was considered stable, removing support for the two external AAC encoders from VisualOn and FAAC. FFmpeg 3.0 (nicknamed "Einstein") retained build support for the Fraunhofer FDK AAC encoder.[22] Since version 3.4 "Cantor" FFmpeg supported the FITS image format.[23] Since November 2018 in version 4.1 "al-Khwarizmi" AV1 can be muxed in MP4 and Matroska incl. WebM.[24][25]


On March 13, 2011, a group of FFmpeg developers decided to fork the project under the name "Libav".[26][27][28] The event was related to an issue in project management, in which developers disagreed with the leadership of FFmpeg.[29][30][31]


Command line tools[edit]

  • ffmpeg is a command-line tool that converts audio or video formats. It can also capture and encode in real-time from various hardware and software sources[32] such as a TV capture card.
  • ffplay is a simple media player utilizing SDL and the FFmpeg libraries.
  • ffprobe is a command-line tool to display media information (text, CSV, XML, JSON), see also Mediainfo.


  • libswresample is a library containing audio resampling routines.
  • libavresample is a library containing audio resampling routines from the Libav project, similar to libswresample from ffmpeg.
  • libavcodec is a library containing all of the native FFmpeg audio/video encoders and decoders. Most codecs were developed from scratch to ensure best performance and high code reusability.
  • libavformat (Lavf)[7] is a library containing demuxers and muxers for audio/video container formats.
  • libavutil is a helper library containing routines common to different parts of FFmpeg. This library includes hash functions (Adler-32, CRC, MD5, RIPEMD, SHA-1. SHA-2, MurmurHash3, HMAC MD-5, HMAC SHA-1 and HMAC SHA-2), ciphers (DES, RC4, AES, AES-CTR, TEA, XTEA, Blowfish, CAST-128, Twofish and Camellia), LZO decompressor and Base64 encoder/decoder.
  • libpostproc is a library containing older h263 based video postprocessing routines.
  • libswscale is a library containing video image scaling and colorspace/pixelformat conversion routines.
  • libavfilter is the substitute for vhook which allows the video/audio to be modified or examined between the decoder and the encoder. Filters have been ported from many projects including MPlayer and avisynth.

Supported hardware[edit]


FFmpeg encompasses software implementations of video and audio compressing and decompressing algorithms. These can be compiled and run on diverse instruction sets.

Many widespread instruction sets are supported by FFmpeg, including x86 (IA-32 and x86-64), PPC (PowerPC), ARM, DEC Alpha, SPARC, and MIPS.[33]

Special purpose hardware[edit]

Various application-specific integrated circuits (ASICs) related to video and audio compression and decompression exist. Such ASICs can perform the computation for audio/video decompression or compression partly or fully to offload these from the host CPU. To make use of such an ASIC, instead of a complete implementation of some algorithm, only the API is required. There are numerous ASICs and APIs available, of which several are supported by FFmpeg.[34]

Firm ASIC purpose supported by FFmpeg Details
AMD UVD decoding via VDPAU API and VAAPI
VCE encoding via VAAPI, considered experimental[35]
Amlogic Amlogic Video Engine decoding ?
BlackMagic DeckLink encoding/decoding real-time ingest and playout
Broadcom Crystal HD decoding
Qualcomm Hexagon encoding/decoding hwaccel[36]
Intel Intel Clear Video decoding
Intel Quick Sync Video encoding/decoding
Nvidia PureVideo / NVDEC decoding via the VDPAU API as of FFmpeg v1.2 (deprecated)
via CUVID API as of FFmpeg v3.1[37]
NVENC encoding as of FFmpeg v2.6

Use with the FFmpeg utility[edit]

Internal hardware acceleration decoding is enabled through the -hwaccel option. It starts decoding normally, but if a decodable stream is detected in hardware, then the decoder designates all significant processing to that hardware, thus accelerating the decoding process. Whereas if no decodable streams are detected (as happens on an unsupported codec or profile), hardware acceleration will be skipped and it will still be decoded in software. -hwaccel_device option is applied when the hardware requires a particular device to function especially there are several graphic cards are available.[citation needed]

Supported codecs and formats[edit]

Image formats[edit]

FFmpeg supports many common and some uncommon image formats.

The PGMYUV image format is a homebrewn variant of the binary (P5) PGM Netpbm format. FFmpeg also supports 16-bit depths of the PGM and PPM formats, and the binary (P7) PAM format with or without alpha channel, depth 8 bit or 16 bit for pix_fmts monob, gray, gray16be, rgb24, rgb48be, ya8, rgba, rgb64be.

Supported formats[edit]

In addition to FFV1 and Snow formats, which were created and developed from within FFmpeg, the project also supports the following formats:

Group Format type Format name
ISO/IEC/ITU-T Video MPEG-1 Part 2, H.261 (Px64),[38] H.262/MPEG-2 Part 2, H.263,[38] MPEG-4 Part 2, H.264/MPEG-4 AVC, HEVC/H.265[21] (MPEG-H Part 2), MPEG-4 VCB (a.k.a. VP8), Motion JPEG, IEC DV video and CD+G
Audio MP1, MP2, MP3, AAC, HE-AAC, MPEG-4 ALS, G.711 μ-law, G.711 A-law, G.721 (a.k.a. G.726 32k), G.722, G.722.2 (a.k.a. AMR-WB), G.723 (a.k.a. G.726 24k and 40k), G.723.1, G.726, G.729, G.729D, IEC DV audio and Direct Stream Transfer
Subtitle MPEG-4 Timed Text (a.k.a. 3GPP Timed Text)
Image JPEG, Lossless JPEG, JPEG-LS, JPEG 2000, PNG, CCITT G3 and CCITT G4
Alliance for Open Media Video AV1[39]
EIA Subtitle EIA-608
CEA Subtitle CEA-708
SMPTE Video SMPTE 314M (a.k.a. DVCAM and DVCPRO), SMPTE 370M (a.k.a. DVCPRO HD), VC-1 (a.k.a. WMV3), VC-2 (a.k.a. Dirac Pro), VC-3 (a.k.a. AVID DNxHD)
Audio SMPTE 302M
Image DPX
ATSC/ETSI/DVB Audio Full Rate (GSM 06.10), AC-3 (Dolby Digital), Enhanced AC-3 (Dolby Digital Plus) and DTS Coherent Acoustics (a.k.a. DTS or DCA)
Subtitle DVB Subtitling (ETSI 300 743)
DVD Forum/Dolby Audio MLP / Dolby TrueHD
Subtitle DVD-Video subtitles
Xperi/DTS, Inc/QDesign Audio DTS Coherent Acoustics (a.k.a. DTS or DCA), DTS Extended Surround (a.k.a. DTS-ES), DTS 96/24, DTS-HD High Resolution Audio, DTS Express (a.k.a. DTS-HD LBR), DTS-HD Master Audio, QDesign Music Codec 1 and 2
Blu-ray Disc Association Subtitle PGS (Presentation Graphics Stream)
3GPP Audio AMR-NB, AMR-WB (a.k.a. G.722.2)
3GPP2 Audio QCELP-8 (a.k.a. SmartRate or IS-96C), QCELP-13 (a.k.a. PureVoice or IS-733) and Enhanced Variable Rate Codec (EVRC. a.k.a. IS-127)
World Wide Web Consortium Video Animated GIF
Subtitle WebVTT
Image GIF, and SVG (via librsvg)
IETF Audio iLBC (via libilbc), Opus and Comfort noise
International Voice Association Audio DSS-SP
SAC Video AVS video, AVS2 video (via libdavs2), and AVS3 video (via libuavs3d)
Microsoft Video Microsoft RLE, Microsoft Video 1, Cinepak, Microsoft MPEG-4 v1, v2 and v3, Windows Media Video (WMV1, WMV2, WMV3/VC-1), WMV Screen and Mimic codec
Audio Windows Media Audio (WMA1, WMA2, WMA Pro and WMA Lossless), XMA (XMA1 and XMA2), MS-GSM and MS-ADPCM
Subtitle SAMI
Image Windows Bitmap, WMV Image (WMV9 Image and WMV9 Image v2), DirectDraw Surface, and MSP
Interactive Multimedia Association Audio IMA ADPCM
Intel / Digital Video Interactive Video RTV 2.1 (Indeo 2), Indeo 3, 4 and 5,[38] and Intel H.263
Audio DVI4 (a.k.a. IMA DVI ADPCM), Intel Music Coder, and Indeo Audio Coder
RealNetworks Video RealVideo Fractal Codec (a.k.a. Iterated Systems ClearVideo), 1, 2, 3 and 4
Audio RealAudio v1 – v10
Subtitle RealText
Apple / Spruce Technologies Video Cinepak (Apple Compact Video), ProRes, Sorenson 3 Codec, QuickTime Animation (Apple Animation), QuickTime Graphics (Apple Graphics), Apple Video, Apple Intermediate Codec and Pixlet
Audio ALAC
Image QuickDraw PICT
Subtitle Spruce subtitle (STL)
Adobe Flash Player (SWF) Video Screen video, Screen video 2, Sorenson Spark and VP6
Audio Adobe SWF ADPCM and Nellymoser Asao
Adobe / Aldus Image TIFF, PSD, and DNG
Xiph.Org Video Theora
Audio Speex (via libspeex), Vorbis, Opus and FLAC
Subtitle Ogg Writ
Sony Audio Adaptive Transform Acoustic Coding (ATRAC1, ATRAC3, ATRAC3Plus and ATRAC9)[38][40] and PSX ADPCM
NTT Audio TwinVQ
Google / On2 / GIPS Video Duck TrueMotion 1, Duck TrueMotion 2, Duck TrueMotion 2.0 Real Time, VP3, VP4, VP5,[38] VP6,[38] VP7, VP8, VP9[20] and animated WebP
Audio DK ADPCM Audio 3/4, On2 AVC and iLBC (via libilbc)
Image WebP
Epic Games / RAD Game Tools Video Smacker video and Bink video
Audio Bink audio
CRI Middleware Audio ADX ADPCM, and HCA
Nintendo / NERD Video Mobiclip video
Audio GCADPCM (a.k.a. ADPCM THP), FastAudio, and ADPCM IMA MOFLEX
DSP Group Audio Truespeech
Electronic Arts / Criterion Games / Black Box Games Video RenderWare TXD,[41] Madcow, CMV, TGV, TGQ, TQI, Midivid VQ (MVDV), MidiVid 3.0 (MV30), and Midivid Archival (MVHA)
Audio Electronic Arts ADPCM variants
Netpbm Image PBM, PGM, PPM, PNM, PAM and PFM
MIT/X Consortium/The Open Group Image XBM, XPM and xwd
HPE / SGI / Silicon Graphics Video Silicon Graphics RLE 8-bit video, Silicon Graphics MVC1/2
Image Silicon Graphics Image
Oracle/Sun Microsystems Image Sun Raster
IBM Video IBM UltiMotion
Avid Technology / Truevision Video Avid 1:1x, Avid Meridien, Avid DNxHD and DNxHR
Image Targa
Autodesk / Alias Video Autodesk Animator Studio Codec and FLIC
Image Alias PIX
Grass Valley / Canopus Video HQ, HQA, HQX and Lossless
Vizrt / NewTek Video SpeedHQ
Academy Software Foundation / ILM Image OpenEXR
Mozilla Corporation Video APNG
Matrox Video Matrox Uncompressed SD (M101) / HD (M102)
Asus Video ASUS V1/V2 codec
Commodore Video CDXL codec
Kodak Image Photo CD
Blackmagic Design / Cintel Image Cintel RAW
Houghton Mifflin Harcourt / The Learning Company / ZSoft Corporation Image PCX
Australian National University Image X-Face
Bluetooth Special Interest Group Audio SBC, and mSBC
Qualcomm / CSR Audio QCELP, aptX, and aptX HD


Output formats (container formats and other ways of creating output streams) in FFmpeg are called "muxers". FFmpeg supports, among others, the following:

Pixel formats[edit]

FFmpeg supports many pixel formats.[49] Some of these formats are only supported as input formats. The command ffmpeg -pix_fmts provides a list of supported pixel formats.

Type Color Packed Planar Palette
Without alpha With alpha Without alpha With alpha Chroma-interleaved With alpha
Monochrome Binary (1-bit monochrome) monoblack, monowhite - - - - -
Grayscale 8/9/10/12/14/16bpp - - 16/32bpp - -
RGB RGB 1:2:1 (4-bit color) 4bpp - - - - -
RGB 3:3:2 (8-bit color) 8bpp - - - - -
RGB 5:5:5 (High color) 16bpp - - - - -
RGB 5:6:5 (High color) 16bpp - - - - -
RGB/BGR 24/30[p 1]/48bpp 32[p 2]/64bpp - - - 8bit->32bpp
GBR[p 3] - - 8/9/10/12/14/16bpc 8/10/12/16bpc - -
RGB Float GBR - - 32bpc 32bpc - -
YUV YVU 4:1:0 - - (9bpp (YVU9))[p 4] - - -
YUV 4:1:0 - - 9bpp - - -
YUV 4:1:1 8bpc (UYYVYY) - 8bpc - (8bpc (NV11)) -
YVU 4:2:0 - - (8bpc (YV12))[p 4] - 8 (NV21) -
YUV 4:2:0 - - 8[p 5]/9/10/12/14/16bpc 8/9/10/16bpc 8 (NV12)/10 (P010)/16bpc (P016) -
YVU 4:2:2 - - (8bpc (YV16))[p 4] - (8bpc (NV61)) -
YUV 4:2:2 8bpc (YUYV[p 6] and UYVY)[p 7] - 8[p 8]/9/10/12/14/16bpc 8/9/10/12/16bpc 8 (NV16)/10bpc (NV20 a.k.a. P210)[p 9] -
YUV 4:4:0 - - 8/10/12bpc - - -
YVU 4:4:4 - - (8bpc (YV24))[p 4] - 8bpc (NV42) -
YUV 4:4:4 (10 (Y410) and 16bpc (Y416)) 16bpc[p 10] 8[p 11]/9/10/12/14/16bpc 8/9/10/12/16bpc 8bpc (NV24) -
XYZ XYZ 4:4:4[p 12] 12bpc - - - - -
Bayer BGGR/RGGB/GBRG/GRBG 8/16bpp - - - - -
  1. ^ 10-bit color components with 2-bit padding (X2RGB10)
  2. ^ RGBx (rgb0) and xBGR (0bgr) are also supported
  3. ^ used in YUV-centric codecs such like H.264
  4. ^ a b c d YVU9, YV12, YV16, and YV24 are supported as rawvideo codec in FFmpeg.
  5. ^ I420 a.k.a. YUV420P
  6. ^ aka YUY2 in Windows
  7. ^ Y210 (YUYV 10bpc) is not supported. UYVY 10bpc without a padding is supported as bitpacked codec in FFmpeg. UYVY 10bpc with 2-bits padding is supported as v210 codec in FFmpeg. 16bpc (Y216) is supported as targa_y216 codec in FFmpeg.
  8. ^ I422 a.k.a. YUV422P
  9. ^ 16bpc (P216) is not supported
  10. ^ 8bpc (AYUV) is not supported
  11. ^ I444 a.k.a. YUV444P
  12. ^ used in JPEG2000

FFmpeg does not support IMC1-IMC4, AI44, CYMK, RGBE, Log RGB and other formats. It also does not yet support ARGB 1:5:5:5, 2:10:10:10, or other BMP bitfield formats that are not commonly used.

Supported protocols[edit]

Open standards[edit]

De facto standards[edit]

Supported filters[edit]

FFmpeg supports, among others, the following filters.[53]



  • Transformations
    • Cropping (crop, cropdetect)
    • Fading (fade)
    • Scaling (scale)
    • Padding (pad)
    • Rotation (rotate)
    • Transposition (transpose)
    • Others:
      • Lens correction (lenscorrection)
      • OpenCV filtering (ocv)
      • Perspective correction (perspective)
  • Temporal editing
    • Framerate (fps, framerate)
    • Looping (loop)
    • Trimming (trim)
  • Deinterlacing (bwdif, idet, kerndeint, nnedi, yadif, w3fdif)
  • Filtering
  • Denoising (atadenoise, bitplanenoise, dctdnoiz, owdenoise, removegrain)
  • Logo removal (delogo, removelogo)
  • Subtitles (ASS, subtitles)
  • Alpha channel editing (alphaextract, alphamerge)
  • Keying (chromakey, colorkey, lumakey)
  • Frame detection
    • Black frame detection (blackdetect, blackframe)
    • Thumbnail selection (thumbnail)
  • Frame Blending (blend, tblend, overlay)
  • Video stabilization (vidstabdetect, vidstabtransform)
  • Color and Level adjustments
    • Balance and levels (colorbalance, colorlevels)
    • Channel mixing (colorchannelmixer)
    • Color space (colorspace)
    • Parametric adjustments (curves, eq)
  • Histograms and visualization
  • Drawing
  • OCR
  • Quality measures
  • Lookup Tables
    • lut, lutrgb, lutyuv, lut2, lut3d, haldclut

Supported LUT formats[edit]


Legal aspects[edit]

FFmpeg contains more than 100 codecs,[55] most of which use compression techniques of one kind or another. Many such compression techniques may be subject to legal claims relating to software patents.[56] Such claims may be enforceable in countries like the United States which have implemented software patents, but are considered unenforceable or void in member countries of the European Union, for example.[citation needed] Patents for many older codecs, including AC3 and all MPEG-1 and MPEG-2 codecs, have expired.[citation needed]

FFmpeg is licensed under the LGPL license, but if a particular build of FFmpeg is linked against any GPL libraries (notably x264), then the entire binary is licensed under the GPL.

Projects using FFmpeg[edit]

FFmpeg is used by software such as VLC media player, xine, Shotcut, Cinelerra-GG video editor, Plex, Kodi, Blender, HandBrake, YouTube,[57] VirtualDub2, a VirtualDub fork,[58] and MPC-HC;[59] it handles video and audio playback in Google Chrome,[59] and Linux version of Firefox.[60] Graphical user interface front-ends for FFmpeg have been developed, including XMedia Recode.

FFmpeg is used by ffdshow, LAV Filters, GStreamer FFmpeg plug-in, Perian, OpenMAX IL, and FFmpegInterop to expand the encoding and decoding capabilities of their respective multimedia platform.

As part of NASA's Mars 2020 mission, FFmpeg is used by the Perseverance rover on Mars for image and video compression before being sent back to Earth.[61]

See also[edit]


  1. ^ "Initial revision - git.videolan.org/ffmpeg.git/commit". git.videolan.org. 2000-12-20. Archived from the original on 2013-12-25. Retrieved 2013-05-11.
  2. ^ "Release n4.4". GitHub. 2021-04-08. Retrieved 2021-04-08.
  3. ^ "Developer Documentation". ffmpeg.org. 2011-12-08. Retrieved 2012-01-04.
  4. ^ "Platform Specific Information". FFmpeg.org. Retrieved 25 February 2020.
  5. ^ "Download". ffmpeg.org. FFmpeg. Retrieved 2012-01-04.
  6. ^ FFmpeg can be compiled with various external libraries, some of which have licenses that are incompatible with the FFmpeg's primary license, the GNU GPL.
  7. ^ a b "FFmpeg: Lavf: I/O and Muxing/Demuxing Library". ffmpeg.org. Retrieved 21 October 2016.
  8. ^ Bellard, Fabrice (18 February 2006). "FFmpeg naming and logo". FFmpeg developer mailing list. FFmpeg website. Retrieved 24 December 2011.
  9. ^ Carlsen, Steve (1992-06-03). "TIFF 6.0 specification" (PS). Aldus Corporation. p. 98. Retrieved 2016-08-14. Zig-Zag Scan[dead link] Alt URL
  10. ^ Niedermayer, Michael. "[FFmpeg-devel] FFmpegs future and resigning as leader". Retrieved 2015-09-22.
  11. ^ "FFmpeg and a thousand fixes". googleblog.com. January 10, 2014. Retrieved 21 October 2016.
  12. ^ "ffserver – FFmpeg". trac.ffmpeg.org. Retrieved 2018-02-03.
  13. ^ "ffserver program being dropped". ffmpeg.org. 2016-07-10. Retrieved 2018-02-03.
  14. ^ "ffmpeg.org/download.html#releases". ffmpeg.org. Retrieved 2015-04-27.
  15. ^ a b "NUT". Multimedia Wiki. 2012. Retrieved 2014-01-03.
  16. ^ Glaser, Fiona (2010-07-23), Diary Of An x264 Developer: Announcing the world's fastest VP8 decoder, archived from the original on 2010-09-30, retrieved 2012-01-04
  17. ^ FFmpeg Announces High-Performance VP8 Decoder, Slashdot, 2010-07-24, retrieved 2012-01-04
  18. ^ "FFmpeg Goes WebM, Enabling VP8 for Boxee & Co". newteevee.com. 2010-06-17. Retrieved 2012-01-04. ...with VLC, Boxee, MythTV, Handbrake and MPlayer being some of the more popular projects utilizing FFmpeg...
  19. ^ a b "Native VP9 decoder is now in the Git master branch". Launchpad. 2013-10-03. Retrieved 2013-10-21.
  20. ^ a b "FFmpeg Now Features Native HEVC/H.265 Decoder Support". Softpedia. 2013-10-16. Retrieved 2013-10-16.
  21. ^ FFmpeg (2016-02-15). "February 15th, 2016, FFmpeg 3.0 "Einstein"". Retrieved 2016-04-02.
  22. ^ FFmpeg (2017-10-15). "October 15th, 2017, FFmpeg 3.4 "Cantor"". Retrieved 2019-05-10.
  23. ^ FFmpeg (2018-11-06). "November 6th, 2018, FFmpeg 4.1 "al-Khwarizmi"". Retrieved 2019-05-10.
  24. ^ Jan Ozer (2019-03-04). "Good News: AV1 Encoding Times Drop to Near-Reasonable Levels". StreamingMedia.com. Retrieved 2019-05-10.
  25. ^ Libav project site, retrieved 2012-01-04
  26. ^ Ronald S. Bultje (2011-03-14), Project renamed to Libav, archived from the original on 2016-11-07, retrieved 2012-01-04
  27. ^ A group of FFmpeg developers just forked as Libav, Phoronix, 2011-03-14, retrieved 2012-01-04
  28. ^ What happened to FFmpeg, 2011-03-30, retrieved 2012-05-19
  29. ^ FFMpeg turmoil, 2011-01-19, retrieved 2012-01-04
  30. ^ "The FFmpeg/Libav situation". blog.pkh.me. Retrieved 2015-09-22.
  31. ^ "This video of Linux desktop (X11) was captured by ffmpeg and encoded in realtime".
  32. ^ "FFmpeg Automated Testing Environment". Fate.multimedia.cx. Retrieved 2012-01-04.
  33. ^ "FFmpeg Hardware Acceleration". ffmpeg.org Wiki. Retrieved 2016-11-12.
  34. ^ "Hardware/VAAPI – FFmpeg". trac.ffmpeg.org. Retrieved 2017-10-16.
  35. ^ "HEVC Video Encoder User Manual" (PDF). Qualcomm Developer Network. Retrieved 2021-02-23.
  36. ^ "FFmpeg Changelog".
  37. ^ a b c d e f "Changelog". FFmpeg trunk SVN. FFmpeg. 17 April 2007. Retrieved 26 April 2007.[permanent dead link]
  38. ^ "git.ffmpeg.org Git - ffmpeg.git/commit". git.ffmpeg.org. Retrieved 2018-04-23.
  39. ^ "ATRAC3plus decoder - git.videolan.org Git - ffmpeg.git/commit". git.videolan.org. 2013-12-28. Archived from the original on 2013-12-30. Retrieved 2013-12-28.
  40. ^ a b "FFmpeg development mailing list". FFmpeg development. FFmpeg. 7 May 2007. Archived from the original on 11 August 2007. Retrieved 24 December 2010.
  41. ^ vitor (13 April 2008). "FFmpeg development mailing list". FFmpeg development. FFmpeg website. Retrieved 14 April 2008.[permanent dead link]
  42. ^ vitor (30 March 2008). "FFmpeg development mailing list". FFmpeg development. FFmpeg website. Retrieved 30 March 2008.[permanent dead link]
  43. ^ benoit (14 April 2008). "FFmpeg development mailing list". FFmpeg development. FFmpeg website. Retrieved 14 April 2008.[permanent dead link]
  44. ^ Michael Niedermayer, Timothy Gu (2014-12-05). "RELEASE NOTES for FFmpeg 2.5 "Bohr"". VideoLAN. Archived from the original on 2014-12-08. Retrieved 2014-12-05.
  45. ^ ramiro (18 March 2008). "FFmpeg development mailing list". FFmpeg development. FFmpeg website. Archived from the original on 17 August 2008. Retrieved 18 March 2008.
  46. ^ banan (8 June 2008). "FFmpeg development mailing list". FFmpeg development. FFmpeg website. Archived from the original on 14 January 2009. Retrieved 8 June 2008.
  47. ^ faust3 (21 March 2008). "FFmpeg development mailing list". FFmpeg development. FFmpeg website. Archived from the original on 25 April 2008. Retrieved 21 March 2008.
  48. ^ "FFmpeg: libavutil/pixfmt.h File Reference - enum AVPixelFormat". FFmpeg Project. 2015-11-17. Retrieved 2015-11-18.
  49. ^ van Kesteren, Anne (2010-09-01). "Internet Drafts are not Open Standards". annevankesteren.nl. Self-published. Retrieved 2015-03-22.
  50. ^ Real Time Streaming Protocol 2.0 (RTSP) draft-ietf-mmusic-rfc2326bis-40 P.231
  51. ^ "rtsp: Support tls-encapsulated RTSP - git.videolan.org Git - ffmpeg.git/commit". videolan.org. Retrieved 21 October 2016.
  52. ^ "FFmpeg Filters". ffmpeg.org. Retrieved 2017-03-27.
  53. ^ How it works earwax.ca
  54. ^ "Codecs list". ffmpeg.org. Retrieved 2012-01-01.
  55. ^ "Legal information on FFmpeg's website". ffmpeg.org. Retrieved 2012-01-04.
  56. ^ "Google's YouTube Uses FFmpeg | Breaking Eggs And Making Omelettes". Multimedia.cx. 2011-02-08. Retrieved 2012-08-06.
  57. ^ VirtualDub2
  58. ^ a b "FFmpeg-based Projects". Ffmpeg.org. Retrieved 2012-01-04.
  59. ^ "Firefox Enables FFmpeg Support By Default". Phoronix. 2015-11-15. Retrieved 2015-11-18.
  60. ^ Maki, J. N.; Gruel, D.; McKinney, C.; Ravine, M. A.; Morales, M.; Lee, D.; Willson, R.; Copley-Woods, D.; Valvo, M.; Goodsall, T.; McGuire, J.; Sellar, R. G.; Schaffner, J. A.; Caplinger, M. A.; Shamah, J. M.; Johnson, A. E.; Ansari, H.; Singh, K.; Litwin, T.; Deen, R.; Culver, A.; Ruoff, N.; Petrizzo, D.; Kessler, D.; Basset, C.; Estlin, T.; Alibay, F.; Nelessen, A.; Algermissen, S. (2020). "The Mars 2020 Engineering Cameras and Microphone on the Perseverance Rover: A Next-Generation Imaging System for Mars Exploration". Space Science Reviews. Springer Nature Switzerland AG. 216 (8): 137. doi:10.1007/s11214-020-00765-9. PMC 7686239. PMID 33268910. Retrieved 22 February 2021.

External links[edit]