Jump to content

FFmpeg

From Wikipedia, the free encyclopedia
(Redirected fromFfmpeg)
FFmpeg
Original author(s)Fabrice Bellard
Bobby Bingham (libavfilter)[1]
Developer(s)FFmpeg team
Initial releaseDecember 20, 2000;23 years ago(2000-12-20)[2]
Stable release
7.1[3]Edit this on Wikidata / 30 September 2024
Repositorygit.ffmpeg.org/ffmpeg.git
Written inCandAssembly[4]
Operating systemVarious, includingWindows,macOS,andLinux(executableprograms are only available from third parties, as the project only distributessource code)[5][6]
Platformx86,ARM,PowerPC,MIPS,RISC-V,DEC Alpha,Blackfin,AVR32,SH-4,andSPARC;may becompiledfor otherdesktop 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[7]
Websiteffmpeg.org

FFmpegis afree and open-source softwareproject consisting of a suite oflibrariesandprogramsfor handling video, audio, and othermultimediafiles and streams. At its core is thecommand-lineffmpegtool itself, designed for processing video and audio files. It is widely used for formattranscoding,basic editing (trimming andconcatenation),video scaling,videopost-productioneffects, and standards compliance (SMPTE,ITU).

FFmpeg also includes other tools:ffplay,a simple media player, andffprobe,a command-line tool to display media information. Among included libraries arelibavcodec,an audio/videocodeclibrary used by many commercial and free software products,libavformat(Lavf),[8]an audio/videocontainermux and demuxlibrary, and libavfilter, a library for enhancing and editing filters through aGStreamer-like filtergraph.[9]

FFmpeg is part of the workflow of many other software projects, and its libraries are a core part of software media players such asVLC,and has been included in core processing forYouTubeandBilibili.[10]Encoders and decoders for many audio and video file formats are included, making it highly useful for the transcoding of common and uncommon media files.

FFmpeg is published under theLGPL-2.1-or-laterorGPL-2.0-or-later,depending on which options are enabled.[11]

History

[edit]

The project was started byFabrice Bellard[11](using thepseudonym"Gérard Lantau" ) in 2000, and was led by Michael Niedermayer from 2004 until 2015.[12]Some FFmpeg developers were also part of theMPlayerproject.

The name of the project is inspired by theMPEGvideo standards group, together with "FF" for "fast forward", so FFmpeg stands for "Fast Forward Moving Picture Experts Group".[13]The logo represents azigzagscan pattern that shows how MPEG video codecs handleentropy encoding.[14]

On March 13, 2011, a group of FFmpeg developers decided to fork the project under the nameLibav.[15][16][17]The event was related to an issue in project management, in which developers disagreed with the leadership of FFmpeg.[18][19][20]

On January 10, 2014, two Google employees announced that over 1000 bugs had been fixed in FFmpeg during the previous two years by means offuzz testing.[21]

In January 2018, theffservercommand-line program – a long-time component of FFmpeg – was removed.[22]The developers had previously deprecated the program citing high maintenance efforts due to its use of internalapplication programming interfaces.[23]

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 theirsource codeGitversion control system.[24]

Codec history

[edit]

Twovideo coding formatswith corresponding codecs and onecontainer formathave been created within the FFmpeg project so far. The two video codecs are the losslessFFV1,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.[25]

In summer 2010, FFmpeg developers Fiona Glaser, Ronald Bultje, and David Conrad, announced the ffvp8 decoder. Through testing, they determined that ffvp8 was faster than Google's ownlibvpxdecoder.[26][27]Starting with version 0.6, FFmpeg also supportedWebMandVP8.[28]

In October 2013, a nativeVP9[29]decoder and OpenHEVC, an open sourceHigh Efficiency Video Coding(HEVC) decoder, were added to FFmpeg.[30]In 2016 the nativeAACencoder was considered stable, removing support for the two external AAC encoders fromVisualOnandFAAC.FFmpeg 3.0 (nicknamed"Einstein") retained build support for theFraunhofer FDK AACencoder.[31]Since version 3.4"Cantor"FFmpeg supported theFITSimage format.[32]Since November 2018 in version 4.1"al-Khwarizmi"AV1can be muxed inMP4andMatroskaincl.WebM.[33][34]

Components

[edit]

Command-line tools

[edit]
  • ffmpegis 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[35]such as a TV capture card.
  • ffplayis a simple media player utilizingSDLand the FFmpeg libraries.
  • ffprobeis a command-line tool to display media information (text,CSV,XML,JSON), see alsoMediaInfo.

Libraries

[edit]
  • libswresampleis a library containing audioresamplingroutines.
  • libavresampleis a library containing audio resampling routines from theLibavproject, similar tolibswresamplefromffmpeg.
  • libavcodecis 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)[8]is a library containing demuxers and muxers for audio/video container formats.
  • libavutilis a helper library containing routines common to different parts of FFmpeg. This library includes hash functions, ciphers,LZOdecompressor andBase64encoder/decoder.
  • libpostprocis a library containing olderH.263basedvideo postprocessingroutines.
  • libswscaleis a library containing videoimage scalingandcolorspace/pixelformat conversion routines.
  • libavfilteris the substitute for vhook which allows the video/audio to be modified or examined (for debugging) between the decoder and the encoder. Filters have been ported from many projects includingMPlayerandavisynth.
  • libavdeviceis a library containing audio/video io through internal and external devices.

Supported hardware

[edit]

CPUs

[edit]

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

Many widespreadinstruction setsare supported by FFmpeg, includingx86(IA-32andx86-64), PPC (PowerPC),ARM,DEC Alpha,SPARC,andMIPS.[36]

Special purpose hardware

[edit]

There are a variety ofapplication-specific integrated circuits (ASICs)for audio/video compression and decompression. These ASICs can partially or completely offload the computation from the host CPU. Instead of a complete implementation of an algorithm, only theAPIis required to use such an ASIC.[37]

Firm ASIC purpose supported by FFmpeg Details
AMD UVD decoding Yes viaVDPAUAPI andVAAPI
VCE encoding Yes viaVAAPI,considered experimental[38]
Amlogic Amlogic Video Engine decoding ?
BlackMagic DeckLink encoding/decoding Yes real-time ingest and playout
Broadcom Crystal HD decoding Yes
Qualcomm Hexagon encoding/decoding Yes hwaccel[39]
Intel Intel Clear Video decoding Yes (libmfx, VAAPI)
Intel Quick Sync Video encoding/decoding Yes (libmfx, VAAPI)
Nvidia PureVideo / NVDEC decoding Yes via theVDPAUAPI as of FFmpeg v1.2 (deprecated)
viaCUVIDAPI as of FFmpeg v3.1[40]
NVENC encoding Yes as of FFmpeg v2.6

The following APIs are also supported:DirectX Video Acceleration(DXVA2, Windows),Direct3D 11(D3D11VA, Windows),Media Foundation(Windows),Vulkan(VKVA), VideoToolbox (iOS, iPadOS, macOS), RockChip MPP,OpenCL,OpenMAX,MMAL (Raspberry Pi), MediaCodec (Android OS), V4L2 (Linux). Depending on the environment, these APIs may lead to specific ASICs, toGPGPUroutines, or toSIMDCPU code.[41]

Supported codecs and formats

[edit]

Image formats

[edit]

FFmpeg supports many common and some uncommon image formats.

ThePGMYUVimage format is a homebrew variant of the binary (P5) PGMNetpbm format.FFmpeg also supports 16-bit depths of the PGM and PPM formats, and the binary (P7)PAMformat with or without alpha channel, depth 8 bit or 16 bit forpix_fmtsmonob, gray, gray16be, rgb24, rgb48be, ya8, rgba, rgb64be.

Supported formats

[edit]
Further information:libavcodec

In addition toFFV1and 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),[42]H.262/MPEG-2 Part 2,H.263,[42]MPEG-4 Part 2,H.264/MPEG-4 AVC,HEVC/H.265[30](MPEG-H Part 2),MPEG-4 VCB(a.k.a. VP8),Motion JPEG,IECDVvideo andCD+G
Audio MP1,MP2,MP3,AAC,HE-AAC,MPEG-4 ALS,G.711μ-law,G.711A-law,G.721(a.k.a.G.72632k),G.722,G.722.2(a.k.a. AMR-WB),G.723(a.k.a.G.72624k and 40k),G.723.1,G.726,G.729,G.729D,IECDVaudio andDirect Stream Transfer
Subtitle MPEG-4 Timed Text(a.k.a. 3GPP Timed Text)
Image JPEG,Lossless JPEG,JPEG-LS,JPEG 2000,JPEG XL,[43]PNG,CCITT G3andCCITT G4
Alliance for Open Media Video AV1[44]
Image AVIF[45]
EIA Subtitle EIA-608
CEA Subtitle CEA-708
SMPTE Video SMPTE 314M (a.k.a.DVCAMandDVCPRO), 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. AVIDDNxHD)
Audio SMPTE 302M
Image DPX
ATSC/ETSI/DVB Audio Full Rate(GSM 06.10), AC-3 (Dolby Digital), Enhanced AC-3 (Dolby Digital Plus) andDTS 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,QDesignMusic 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) andEnhanced Variable Rate Codec(EVRC. a.k.a. IS-127)
World Wide Web Consortium Video Animated GIF[46]
Subtitle WebVTT
Image GIF,andSVG(vialibrsvg)
IETF Video FFV1
Audio iLBC(via libilbc),OpusandComfort noise
International Voice Association Audio DSS-SP
SAC Video AVS video,AVS2 video[47](via libdavs2), and AVS3 video (via libuavs3d)
Microsoft Video MicrosoftRLE,Microsoft Video 1,Cinepak,MicrosoftMPEG-4v1, v2 and v3,Windows Media Video(WMV1, WMV2, WMV3/VC-1),WMV Screenand Mimic codec
Audio Windows Media Audio(WMA1, WMA2, WMA Pro and WMA Lossless),XMA(XMA1 and XMA2),[48]MSNSiren,MS-GSM and MS-ADPCM
Subtitle SAMI
Image Windows Bitmap,WMV Image(WMV9 Image and WMV9 Image v2),DirectDraw Surface,andMSP[49]
Interactive Multimedia Association Audio IMA ADPCM
Intel/Digital Video Interactive Video RTV 2.1 (Indeo2), Indeo 3, 4 and 5,[42]and Intel H.263
Audio DVI4 (a.k.a. IMA DVI ADPCM), Intel Music Coder, and Indeo Audio Coder
RealNetworks Video RealVideoFractal Codec (a.k.a. Iterated Systems ClearVideo), 1, 2, 3 and 4
Audio RealAudiov1 – v10, and RealAudio Lossless[50]
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 CodecandPixlet[51]
Audio ALAC
Image QuickDrawPICT
Subtitle Spruce subtitle (STL)
Adobe Flash Player(SWF) Video Screen video, Screen video 2,Sorenson SparkandVP6
Audio Adobe SWFADPCMandNellymoser Asao
Adobe/Aldus Image TIFF,PSD,[51]andDNG
Xiph.Org Video Theora
Audio Speex,[52]Vorbis,OpusandFLAC
Subtitle Ogg Writ
Sony Audio Adaptive Transform Acoustic Coding(ATRAC1, ATRAC3, ATRAC3Plus,[53]and ATRAC9[47])[42]and PSX ADPCM
NTT Audio TwinVQ
Google/On2/GIPS Video Duck TrueMotion 1, Duck TrueMotion 2, Duck TrueMotion 2.0 Real Time,VP3,VP4,[54]VP5,[42]VP6,[42]VP7,VP8,[55]VP9[29]and animated WebP
Audio DK ADPCM Audio 3/4,On2 AVCandiLBC(via libilbc)
Image WebP[56]
Epic Games/ RAD Game Tools Video Smacker videoandBink 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
Synaptics/DSP Group Audio Truespeech
Electronic Arts/Criterion Games/Black Box Games/Westwood Studios Video RenderWareTXD,[57]Madcow, CMV, TGV, TGQ, TQI, Midivid VQ (MVDV), MidiVid 3.0 (MV30), Midivid Archival (MVHA), and Vector Quantized Animation (VQA)
Audio Electronic Arts ADPCM variants
Netpbm Image PBM, PGM, PPM, PNM, PAM, PFM and PHM
MIT/X Consortium/The Open Group Image XBM,[50]XPMandxwd
HPE/SGI/Silicon Graphics Video Silicon Graphics RLE 8-bit video,[46]Silicon Graphics MVC1/2[46]
Image Silicon Graphics Image
Oracle/Sun Microsystems Image Sun Raster
IBM Video IBM UltiMotion
Avid Technology/Truevision Video Avid 1:1x, Avid Meridien,[50]AvidDNxHD,Avid DNx444,[53]andDNxHR
Image Targa[46]
Autodesk/Alias Video Autodesk Animator Studio CodecandFLIC
Image Alias PIX
Activision Blizzard/Activision/Infocom Audio ADPCMZork
Konami/Hudson Soft Video HVQM4 Video
Audio Konami MTAF, and ADPCM IMA HVQM4
Grass Valley/Canopus Video HQ, HQA, HQX and Lossless
Vizrt/NewTek Video SpeedHQ
Image Vizrt Binary Image[45]
Academy Software Foundation/ILM Image OpenEXR[50]
Mozilla Corporation Video APNG[56]
Matrox Video Matrox Uncompressed SD (M101) / HD (M102)
AMD/ATI Video ATI VCR1/VCR2
Asus Video ASUS V1/V2 codec
Commodore Video CDXLcodec
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[46]
Bluetooth Special Interest Group Audio SBC,and mSBC
Qualcomm/CSR Audio QCELP,aptX,andaptX HD
Open Mobile Alliance/ WAP Forum Image Wireless Bitmap

Muxers

[edit]

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]
Type Color Packed Planar Palette
Without alpha Withalpha 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 — —
RGBFloat RGB 32bpc 16/32bpc — — — —
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)/12 (P012)/16bpc (P016) —
YVU 4:2:2 — — (8bpc (YV16))[p 4] — (8bpc (NV61)) —
YUV 4:2:2 8 (YUYV[p 6]and UYVY)/10 (Y210)/12bpc (Y212)[p 7] — 8[p 8]/9/10/12/14/16bpc 8/9/10/12/16bpc 8 (NV16)/10 (NV20 and P210)/16bpc (P216) —
YUV 4:4:0 — — 8/10/12bpc — — —
YVU 4:4:4 — — (8bpc (YV24))[p 4] — 8bpc (NV42) —
YUV 4:4:4 8 (VUYX)/10[p 9]/12bpc[p 10] 8[p 11]/ 16bpc (AYUV64)[p 12] 8[p 13]/9/10/12/14/16bpc 8/9/10/12/16bpc 8 (NV24)/10 (P410)/ 16bpc (P416) —
XYZ XYZ 4:4:4[p 14] 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. ^abcdYVU9, YV12, YV16, and YV24 are supported asrawvideocodec in FFmpeg.
  5. ^I420 a.k.a. YUV420P
  6. ^aka YUY2 in Windows
  7. ^UYVY 10bpc without a padding is supported asbitpackedcodec in FFmpeg. UYVY 10bpc with 2-bits padding is supported asv210codec in FFmpeg. 16bpc (Y216) is supported astarga_y216codec in FFmpeg.
  8. ^I422 a.k.a. YUV422P
  9. ^XV30 a.k.a. XVYU2101010
  10. ^XV36
  11. ^VUYA a.k.a. AYUV
  12. ^10bpc (Y410), 12bpc (Y412), and Y416 (16bpc) are not supported.
  13. ^I444 a.k.a. YUV444P
  14. ^used in JPEG2000

FFmpeg does not support IMC1-IMC4, AI44, CYMK,RGBE,Log RGB and other formats. It also does not yet supportARGB1:5:5:5,2:10:10:10,or otherBMP bitfieldformats 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.[68]

Audio

[edit]

Video

[edit]
  • Transformations
    • Cropping(crop, cropdetect)
    • Fading(fade)
    • Scaling(scale)
    • Padding (pad)
    • Rotation (rotate)
    • Transposition (transpose)
    • Others:
      • Lens correction (lenscorrection)
      • OpenCVfiltering (ocv)
      • Perspective correction (perspective)
  • Temporal editing
    • Framerate(fps, framerate)
    • Looping (loop)
    • Trimming (trim)
  • Deinterlacing(bwdif, idet, kerndeint, nnedi, yadif, w3fdif)
  • Inverse Telecine
  • Filtering
  • Denoising(atadenoise, bitplanenoise, dctdnoiz, owdenoise, removegrain)
  • Logo removal (delogo, removelogo)
  • Subtitles(ASS,subtitles)
  • Alphachannel 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
    • Balanceand 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 test patterns

[edit]

Supported LUT formats

[edit]

Supported media and interfaces

[edit]

FFmpeg supports the following devices via external libraries.[70]

Media

[edit]

Physical interfaces

[edit]

Audio IO

[edit]

Video IO

[edit]

Screen capture and output

[edit]

Others

[edit]

Applications

[edit]
[edit]

FFmpeg contains more than 100 codecs,[71]most of which use compression techniques of one kind or another. Many such compression techniques may be subject to legal claims relating tosoftware patents.[72]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 theEuropean Union,for example.[73][original research]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 (notablyx264), then the entire binary is licensed under the GPL.

Projects using FFmpeg

[edit]
Main category:Software that uses FFmpeg

FFmpeg is used by software such asBlender,Cinelerra-GG Infinity,HandBrake,Kodi,MPC-HC,Plex,Shotcut,VirtualDub2(aVirtualDubfork),[74]VLC media player,xineandYouTube.[75][76]It handles video and audio playback inGoogle Chrome[76]and the Linux version of Firefox.[77]GUIfront-endsfor FFmpeg have been developed, including Multimedia Xpert[78]and XMedia Recode.

FFmpeg is used byffdshow,FFmpegInterop, theGStreamer FFmpeg plug-in,LAV Filters andOpenMAX ILto expand the encoding and decoding capabilities of their respective multimedia platforms.

As part ofNASA'sMars 2020mission, FFmpeg is used by thePerseverance roveron Mars for image and video compression before footage is sent to Earth.[79]

See also

[edit]

References

[edit]
  1. ^"Bobby announces work on libavfilter as GsOC project".2008-02-09.Archivedfrom the original on 2021-10-07.Retrieved2021-10-07.
  2. ^"Initial revision - git.videolan.org/ffmpeg.git/commit".git.videolan.org. 2000-12-20. Archived fromthe originalon 2013-12-25.Retrieved2013-05-11.
  3. ^"FFmpeg 7.1" Péter "".30 September 2024.Retrieved30 September2024.
  4. ^"Developer Documentation".ffmpeg.org. 2011-12-08.Archivedfrom the original on 2012-02-04.Retrieved2012-01-04.
  5. ^"Platform Specific Information".FFmpeg.org.Archivedfrom the original on 25 February 2020.Retrieved25 February2020.
  6. ^"Download".ffmpeg.org.FFmpeg.Archivedfrom the original on 2011-10-06.Retrieved2012-01-04.
  7. ^FFmpeg can be compiled with various external libraries, some of which have licenses that areincompatible withthe FFmpeg's primary license, theGNU GPL.
  8. ^ab"FFmpeg: Lavf: I/O and Muxing/Demuxing Library".ffmpeg.org.Archivedfrom the original on 3 December 2016.Retrieved21 October2016.
  9. ^"Libavfilter Documentation".ffmpeg.org.Archivedfrom the original on 2021-10-07.Retrieved2021-10-07.
  10. ^ijkplayer,bilibili, 2021-10-05,archivedfrom the original on 2021-10-05,retrieved2021-10-05
  11. ^Niedermayer, Michael (31 July 2015)."[FFmpeg-devel] FFmpegs future and resigning as leader".Archivedfrom the original on 2015-08-15.Retrieved2015-09-22.
  12. ^Bellard, Fabrice(18 February 2006)."FFmpeg naming and logo".FFmpeg developer mailing list.FFmpeg website.Archivedfrom the original on 26 April 2012.Retrieved24 December2011.
  13. ^Carlsen, Steve (1992-06-03)."TIFF 6.0 specification"(PS).Aldus Corporation.p. 98.Retrieved2016-08-14.Zig-Zag Scan[dead link‍]Alt URLArchived2012-07-03 at theWayback Machine
  14. ^Libav project site,archivedfrom the original on 2012-01-03,retrieved2012-01-04
  15. ^Ronald S. Bultje (2011-03-14),Project renamed to Libav,archived fromthe originalon 2016-11-07,retrieved2012-01-04
  16. ^A group of FFmpeg developers just forked as Libav,Phoronix, 2011-03-14,archivedfrom the original on 2011-09-15,retrieved2012-01-04
  17. ^What happened to FFmpeg,2011-03-30,archivedfrom the original on 2018-09-02,retrieved2012-05-19
  18. ^FFMpeg turmoil,2011-01-19,archivedfrom the original on 2012-01-12,retrieved2012-01-04
  19. ^"The FFmpeg/Libav situation".blog.pkh.me.Archivedfrom the original on 2012-07-01.Retrieved2015-09-22.
  20. ^"FFmpeg and a thousand fixes".googleblog.com.January 10, 2014.Archivedfrom the original on 22 October 2016.Retrieved21 October2016.
  21. ^"ffserver – FFmpeg".trac.ffmpeg.org.Archivedfrom the original on 2018-02-04.Retrieved2018-02-03.
  22. ^"ffserver program being dropped".ffmpeg.org.2016-07-10.Archivedfrom the original on 2016-07-16.Retrieved2018-02-03.
  23. ^"ffmpeg.org/download.html#releases".ffmpeg.org.Archivedfrom the original on 2011-10-06.Retrieved2015-04-27.
  24. ^ab"NUT".Multimedia Wiki. 2012.Archivedfrom the original on 2014-01-03.Retrieved2014-01-03.
  25. ^Glaser, Fiona (2010-07-23),Diary Of An x264 Developer: Announcing the world's fastest VP8 decoder,archived fromthe originalon 2010-09-30,retrieved2012-01-04
  26. ^FFmpeg Announces High-Performance VP8 Decoder,Slashdot, 2010-07-24,archivedfrom the original on 2011-12-21,retrieved2012-01-04
  27. ^"FFmpeg Goes WebM, Enabling VP8 for Boxee & Co".newteevee.com. 2010-06-17. Archived fromthe originalon 2010-06-20.Retrieved2012-01-04....withVLC,Boxee,MythTV,HandbrakeandMPlayerbeing some of the more popular projects utilizing FFmpeg...
  28. ^ab"Native VP9 decoder is now in the Git master branch".Launchpad.2013-10-03.Archivedfrom the original on 2013-10-22.Retrieved2013-10-21.
  29. ^ab"FFmpeg Now Features Native HEVC/H.265 Decoder Support".Softpedia.2013-10-16.Archivedfrom the original on 2014-06-15.Retrieved2013-10-16.
  30. ^FFmpeg(2016-02-15)."February 15th, 2016, FFmpeg 3.0" Einstein "".Archivedfrom the original on 2016-07-16.Retrieved2016-04-02.
  31. ^FFmpeg(2017-10-15)."October 15th, 2017, FFmpeg 3.4" Cantor "".Archivedfrom the original on 2016-07-16.Retrieved2019-05-10.
  32. ^FFmpeg(2018-11-06)."November 6th, 2018, FFmpeg 4.1" al-Khwarizmi "".Archivedfrom the original on 2016-07-16.Retrieved2019-05-10.
  33. ^Jan Ozer (2019-03-04)."Good News: AV1 Encoding Times Drop to Near-Reasonable Levels".StreamingMedia.com.Archivedfrom the original on 2021-05-14.Retrieved2019-05-10.
  34. ^This video of Linux desktop (X11) was captured by ffmpeg and encoded in realtime[circular reference]
  35. ^"FFmpeg Automated Testing Environment".Fate.multimedia.cx.Archivedfrom the original on 2016-04-10.Retrieved2012-01-04.
  36. ^"FFmpeg Hardware Acceleration".ffmpeg.org Wiki.Archivedfrom the original on 2016-12-04.Retrieved2016-11-12.
  37. ^"Hardware/VAAPI – FFmpeg".trac.ffmpeg.org.Archivedfrom the original on 2017-10-16.Retrieved2017-10-16.
  38. ^"HEVC Video Encoder User Manual"(PDF).Qualcomm Developer Network.Archived(PDF)from the original on 2021-04-16.Retrieved2021-02-23.
  39. ^"FFmpeg Changelog".GitHub.Archivedfrom the original on 2017-03-21.Retrieved2016-11-12.
  40. ^"HWAccelIntro – FFmpeg".trac.ffmpeg.org.Archivedfrom the original on 2016-12-04.Retrieved2016-11-12.
  41. ^abcdef"Changelog".FFmpeg trunk SVN.FFmpeg. 17 April 2007.Retrieved26 April2007.[permanent dead link‍]
  42. ^"FFmpeg Lands JPEG-XL Support".www.phoronix.com.Archivedfrom the original on 2022-07-24.Retrieved2022-04-26.
  43. ^"git.ffmpeg.org Git - ffmpeg.git/commit".git.ffmpeg.org.Archivedfrom the original on 2018-04-23.Retrieved2018-04-23.
  44. ^abFFmpeg 5.1 Released With Many Improvements To This Important Multimedia ProjectArchived2022-08-07 at theWayback Machine.Phoronix. July 22, 2022
  45. ^abcdeFFmpeg 1.1 Brings New Support, Encoders/DecodersArchived2022-08-08 at theWayback Machine.Phoronix. January 7, 2013
  46. ^abFFmpeg 4.1 Brings AV1 Parser & Support For AV1 In MP4Archived2022-08-08 at theWayback Machine.Phoronix. November 6, 2018
  47. ^FFmpeg 3.0 Released, Supports VP9 VA-API AccelerationArchived2022-08-08 at theWayback Machine.Phoronix. February 15, 2016
  48. ^FFmpeg 4.4 Released With AV1 VA-API Decoder, SVT-AV1 EncodingArchived2022-08-08 at theWayback Machine.Phoronix. April 9, 2021
  49. ^abcdFFmpeg 0.11 Has Blu-Ray Protocol, New EncodersArchived2022-08-08 at theWayback Machine.Phoronix. May 26, 2012
  50. ^abFFmpeg 3.3 Brings Native Opus Encoder, Support For Spherical VideosArchived2022-08-08 at theWayback Machine.Phoronix. April 17, 2017
  51. ^FFmpeg 5.0 Released For This Popular, Open-Source Multimedia LibraryArchived2022-08-08 at theWayback Machine.Phoronix. January 14, 2022
  52. ^abFFmpeg 2.2 Release Adds The Libx265 EncoderArchived2022-08-08 at theWayback Machine.Phoronix. March 23, 2014
  53. ^FFmpeg 4.2 Released With AV1 Decoding Support, GIF ParserArchived2022-08-08 at theWayback Machine.Phoronix. August 6, 2019
  54. ^FFmpeg 0.6 Released With H.264, VP8 LoveArchived2022-08-08 at theWayback Machine.Phoronix. June 16, 2010
  55. ^abFFmpeg 2.5 Brings Animated PNG, WebP Decoding SupportArchived2022-08-08 at theWayback Machine.Phoronix. December 4, 2014
  56. ^ab"FFmpeg development mailing list".FFmpeg development.FFmpeg. 7 May 2007. Archived fromthe originalon 11 August 2007.Retrieved24 December2010.
  57. ^vitor (13 April 2008)."FFmpeg development mailing list".FFmpeg development.FFmpeg website.Retrieved14 April2008.[permanent dead link‍]
  58. ^vitor (30 March 2008)."FFmpeg development mailing list".FFmpeg development.FFmpeg website.Retrieved30 March2008.[permanent dead link‍]
  59. ^"FFmpeg: MaxisXADemuxContext Struct Reference".FFmpeg development.FFmpeg website.Archivedfrom the original on 17 March 2024.Retrieved17 March2024.
  60. ^Michael Niedermayer, Timothy Gu (2014-12-05)."RELEASE NOTES for FFmpeg 2.5" Bohr "".VideoLAN.Archived fromthe originalon 2014-12-08.Retrieved2014-12-05.
  61. ^ramiro (18 March 2008)."FFmpeg development mailing list".FFmpeg development.FFmpeg website. Archived fromthe originalon 17 August 2008.Retrieved18 March2008.
  62. ^banan (8 June 2008)."FFmpeg development mailing list".FFmpeg development.FFmpeg website. Archived fromthe originalon 14 January 2009.Retrieved8 June2008.
  63. ^faust3 (21 March 2008)."FFmpeg development mailing list".FFmpeg development.FFmpeg website. Archived fromthe originalon 25 April 2008.Retrieved21 March2008.{{cite web}}:CS1 maint: numeric names: authors list (link)
  64. ^van Kesteren, Anne (2010-09-01)."Internet Drafts are not Open Standards".annevankesteren.nl.Self-published.Archivedfrom the original on 2010-09-02.Retrieved2015-03-22.
  65. ^Real Time Streaming Protocol 2.0 (RTSP)Archived2023-10-25 at theWayback MachineP.231
  66. ^"rtsp: Support tls-encapsulated RTSP - git.videolan.org Git - ffmpeg.git/commit".videolan.org.Archivedfrom the original on 18 October 2016.Retrieved21 October2016.
  67. ^"FFmpeg Filters".ffmpeg.org.Archivedfrom the original on 2017-03-28.Retrieved2017-03-27.
  68. ^How it worksearwax.ca
  69. ^"FFmpeg Devices Documentation".ffmpeg.org.Archivedfrom the original on 2021-10-25.Retrieved2021-10-25.
  70. ^"Codecs list".ffmpeg.org.Archivedfrom the original on 2012-01-06.Retrieved2012-01-01.
  71. ^"Legal information on FFmpeg's website".ffmpeg.org.Archivedfrom the original on 2012-01-03.Retrieved2012-01-04.
  72. ^"The European Patent Convention".www.epo.org.European Patent Office.2020-11-29.Archivedfrom the original on 2021-11-19.Retrieved2021-11-24.
  73. ^"VirtualDub2".Archivedfrom the original on 2020-08-07.Retrieved2020-08-15.
  74. ^"Google's YouTube Uses FFmpeg | Breaking Eggs And Making Omelettes".Multimedia.cx. 2011-02-08.Archivedfrom the original on 2012-08-14.Retrieved2012-08-06.
  75. ^ab"FFmpeg-based Projects".ffmpeg.org.Archivedfrom the original on 2016-02-20.Retrieved2012-01-04..
  76. ^"Firefox Enables FFmpeg Support By Default".Phoronix. 2015-11-15.Archivedfrom the original on 2017-09-25.Retrieved2015-11-18.
  77. ^"Multimedia Xpert".Atlas Informatik.Archivedfrom the original on 2023-04-04.Retrieved2022-05-26.
  78. ^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.216(8). Springer Nature Switzerland AG.: 137.Bibcode:2020SSRv..216..137M.doi:10.1007/s11214-020-00765-9.PMC7686239.PMID33268910.
[edit]
Retrieved from "https://en.wikipedia.org/w/index.php?title=FFmpeg&oldid=1261027867"