FFMPEG进阶系列02-ffmpeg命令详解2

C_GO流媒体后台开发

< 0.01 2018-10-03 23:45 IP属地: 湖南

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查看ffmpeg版本

通过ffmpeg -version查看ffmpeg的版本，这里所查看的版本，是详细的版本，包含libavformat、libavcodec、libavutil、libavfilter、libswscale、libswresample的版本，如图：
ffmpeg.exe -version
built with gcc 7.3.1 (GCC) 20180722 configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fon tconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --ena ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsna ppy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enabl e-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidsta b --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --ena ble-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth libavutil 56. 14.100 / 56. 14.100 libavcodec 58. 18.100 / 58. 18.100 libavformat 58. 12.100 / 58. 12.100 libavdevice 58. 3.100 / 58. 3.100 libavfilter 7. 16.100 / 7. 16.100 libswscale 5. 1.100 / 5. 1.100 libswresample 3. 1.100 / 3. 1.100 libpostproc 55. 1.100 / 55. 1.100
查看formats

有时候使用ffmpeg转码，发现无法解析视频文件，或者无法生成视频文件，报一些不支持生成对应的视频文件的错误，这个时候就需要查看当前使用的ffmpeg是否支对应的视频文件格式，需要使用 ffmpeg -formats 来查看：
built with gcc 7.3.1 (GCC) 20180722 configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-f ontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --e nable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libs nappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --ena ble-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvids tab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --e nable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva 2 --enable-avisynth libavutil 56. 14.100 / 56. 14.100 libavcodec 58. 18.100 / 58. 18.100 libavformat 58. 12.100 / 58. 12.100 libavdevice 58. 3.100 / 58. 3.100 libavfilter 7. 16.100 / 7. 16.100 libswscale 5. 1.100 / 5. 1.100 libswresample 3. 1.100 / 3. 1.100 libpostproc 55. 1.100 / 55. 1.100 File formats: D. = Demuxing supported .E = Muxing supported D 3dostr 3DO STR E 3g2 3GP2 (3GPP2 file format) E 3gp 3GP (3GPP file format) D 4xm 4X Technologies E a64 a64 - video for Commodore 64 D aa Audible AA format files D aac raw ADTS AAC (Advanced Audio Coding) DE ac3 raw AC-3 D acm Interplay ACM D act ACT Voice file format D adf Artworx Data Format D adp ADP D ads Sony PS2 ADS E adts ADTS AAC (Advanced Audio Coding) DE adx CRI ADX D aea MD STUDIO audio D afc AFC DE aiff Audio IFF D aix CRI AIX DE alaw PCM A-law D alias_pix Alias/Wavefront PIX image DE amr 3GPP AMR D amrnb raw AMR-NB D amrwb raw AMR-WB D anm Deluxe Paint Animation D apc CRYO APC D ape Monkey's Audio DE apng Animated Portable Network Graphics DE aptx raw aptX (Audio Processing Technology for Bluetooth) DE aptx_hd raw aptX HD (Audio Processing Technology for Bluetooth) D aqtitle AQTitle subtitles DE asf ASF (Advanced / Active Streaming Format) D asf_o ASF (Advanced / Active Streaming Format) E asf_stream ASF (Advanced / Active Streaming Format) DE ass SSA (SubStation Alpha) subtitle DE ast AST (Audio Stream) DE au Sun AU DE avi AVI (Audio Video Interleaved) D avisynth AviSynth script E avm2 SWF (ShockWave Flash) (AVM2) D avr AVR (Audio Visual Research) D avs AVS D bethsoftvid Bethesda Softworks VID D bfi Brute Force & Ignorance D bfstm BFSTM (Binary Cafe Stream) D bin Binary text D bink Bink DE bit G.729 BIT file format D bmp_pipe piped bmp sequence D bmv Discworld II BMV D boa Black Ops Audio D brender_pix BRender PIX image D brstm BRSTM (Binary Revolution Stream) D c93 Interplay C93 DE caf Apple CAF (Core Audio Format) DE cavsvideo raw Chinese AVS (Audio Video Standard) video D cdg CD Graphics D cdxl Commodore CDXL video D cine Phantom Cine DE codec2 codec2 .c2 muxer DE codec2raw raw codec2 muxer D concat Virtual concatenation script E crc CRC testing DE dash DASH Muxer DE data raw data DE daud D-Cinema audio D dcstr Sega DC STR D dds_pipe piped dds sequence D dfa Chronomaster DFA DE dirac raw Dirac DE dnxhd raw DNxHD (SMPTE VC-3) D dpx_pipe piped dpx sequence D dsf DSD Stream File (DSF) D dshow DirectShow capture D dsicin Delphine Software International CIN D dss Digital Speech Standard (DSS) DE dts raw DTS D dtshd raw DTS-HD DE dv DV (Digital Video) D dvbsub raw dvbsub D dvbtxt dvbtxt E dvd MPEG-2 PS (DVD VOB) D dxa DXA D ea Electronic Arts Multimedia D ea_cdata Electronic Arts cdata DE eac3 raw E-AC-3 D epaf Ensoniq Paris Audio File D exr_pipe piped exr sequence DE f32be PCM 32-bit floating-point big-endian DE f32le PCM 32-bit floating-point little-endian E f4v F4V Adobe Flash Video DE f64be PCM 64-bit floating-point big-endian DE f64le PCM 64-bit floating-point little-endian DE ffmetadata FFmpeg metadata in text E fifo FIFO queue pseudo-muxer E fifo_test Fifo test muxer DE film_cpk Sega FILM / CPK DE filmstrip Adobe Filmstrip DE fits Flexible Image Transport System DE flac raw FLAC D flic FLI/FLC/FLX animation DE flv FLV (Flash Video) E framecrc framecrc testing E framehash Per-frame hash testing E framemd5 Per-frame MD5 testing D frm Megalux Frame D fsb FMOD Sample Bank DE g722 raw G.722 DE g723_1 raw G.723.1 DE g726 raw big-endian G.726 ("left-justified") DE g726le raw little-endian G.726 ("right-justified") D g729 G.729 raw format demuxer D gdigrab GDI API Windows frame grabber D gdv Gremlin Digital Video D genh GENeric Header DE gif GIF Animation DE gsm raw GSM DE gxf GXF (General eXchange Format) DE h261 raw H.261 DE h263 raw H.263 DE h264 raw H.264 video E hash Hash testing E hds HDS Muxer DE hevc raw HEVC video E hls Apple HTTP Live Streaming D hls,applehttp Apple HTTP Live Streaming D hnm Cryo HNM v4 DE ico Microsoft Windows ICO D idcin id Cinematic D idf iCE Draw File D iff IFF (Interchange File Format) DE ilbc iLBC storage DE image2 image2 sequence DE image2pipe piped image2 sequence D ingenient raw Ingenient MJPEG D ipmovie Interplay MVE E ipod iPod H.264 MP4 (MPEG-4 Part 14) DE ircam Berkeley/IRCAM/CARL Sound Format E ismv ISMV/ISMA (Smooth Streaming) D iss Funcom ISS D iv8 IndigoVision 8000 video DE ivf On2 IVF D ivr IVR (Internet Video Recording) D j2k_pipe piped j2k sequence DE jacosub JACOsub subtitle format D jpeg_pipe piped jpeg sequence D jpegls_pipe piped jpegls sequence D jv Bitmap Brothers JV E latm LOAS/LATM D lavfi Libavfilter virtual input device D live_flv live RTMP FLV (Flash Video) D lmlm4 raw lmlm4 D loas LOAS AudioSyncStream DE lrc LRC lyrics D lvf LVF D lxf VR native stream (LXF) DE m4v raw MPEG-4 video E matroska Matroska D matroska,webm Matroska / WebM E md5 MD5 testing D mgsts Metal Gear Solid: The Twin Snakes DE microdvd MicroDVD subtitle format DE mjpeg raw MJPEG video D mjpeg_2000 raw MJPEG 2000 video E mkvtimestamp_v2 extract pts as timecode v2 format, as defined by mkvtoolnix DE mlp raw MLP D mlv Magic Lantern Video (MLV) D mm American Laser Games MM DE mmf Yamaha SMAF E mov QuickTime / MOV D mov,mp4,m4a,3gp,3g2,mj2 QuickTime / MOV E mp2 MP2 (MPEG audio layer 2) DE mp3 MP3 (MPEG audio layer 3) E mp4 MP4 (MPEG-4 Part 14) D mpc Musepack D mpc8 Musepack SV8 DE mpeg MPEG-1 Systems / MPEG program stream E mpeg1video raw MPEG-1 video E mpeg2video raw MPEG-2 video DE mpegts MPEG-TS (MPEG-2 Transport Stream) D mpegtsraw raw MPEG-TS (MPEG-2 Transport Stream) D mpegvideo raw MPEG video DE mpjpeg MIME multipart JPEG D mpl2 MPL2 subtitles D mpsub MPlayer subtitles D msf Sony PS3 MSF D msnwctcp MSN TCP Webcam stream D mtaf Konami PS2 MTAF D mtv MTV DE mulaw PCM mu-law D musx Eurocom MUSX D mv Silicon Graphics Movie D mvi Motion Pixels MVI DE mxf MXF (Material eXchange Format) E mxf_d10 MXF (Material eXchange Format) D-10 Mapping E mxf_opatom MXF (Material eXchange Format) Operational Pattern Atom D mxg MxPEG clip D nc NC camera feed D nistsphere NIST SPeech HEader REsources D nsp Computerized Speech Lab NSP D nsv Nullsoft Streaming Video E null raw null video DE nut NUT D nuv NuppelVideo E oga Ogg Audio DE ogg Ogg E ogv Ogg Video DE oma Sony OpenMG audio E opus Ogg Opus D paf Amazing Studio Packed Animation File D pam_pipe piped pam sequence D pbm_pipe piped pbm sequence D pcx_pipe piped pcx sequence D pgm_pipe piped pgm sequence D pgmyuv_pipe piped pgmyuv sequence D pictor_pipe piped pictor sequence D pjs PJS (Phoenix Japanimation Society) subtitles D pmp Playstation Portable PMP D png_pipe piped png sequence D ppm_pipe piped ppm sequence D psd_pipe piped psd sequence E psp PSP MP4 (MPEG-4 Part 14) D psxstr Sony Playstation STR D pva TechnoTrend PVA D pvf PVF (Portable Voice Format) D qcp QCP D qdraw_pipe piped qdraw sequence D r3d REDCODE R3D DE rawvideo raw video D realtext RealText subtitle format D redspark RedSpark D rl2 RL2 DE rm RealMedia DE roq raw id RoQ D rpl RPL / ARMovie D rsd GameCube RSD DE rso Lego Mindstorms RSO DE rtp RTP output E rtp_mpegts RTP/mpegts output format DE rtsp RTSP output DE s16be PCM signed 16-bit big-endian DE s16le PCM signed 16-bit little-endian DE s24be PCM signed 24-bit big-endian DE s24le PCM signed 24-bit little-endian DE s32be PCM signed 32-bit big-endian DE s32le PCM signed 32-bit little-endian D s337m SMPTE 337M DE s8 PCM signed 8-bit D sami SAMI subtitle format DE sap SAP output DE sbc raw SBC D sbg SBaGen binaural beats script DE scc Scenarist Closed Captions E sdl,sdl2 SDL2 output device D sdp SDP D sdr2 SDR2 D sds MIDI Sample Dump Standard D sdx Sample Dump eXchange E segment segment D sgi_pipe piped sgi sequence D shn raw Shorten D siff Beam Software SIFF E singlejpeg JPEG single image D sln Asterisk raw pcm DE smjpeg Loki SDL MJPEG D smk Smacker E smoothstreaming Smooth Streaming Muxer D smush LucasArts Smush D sol Sierra SOL DE sox SoX native DE spdif IEC 61937 (used on S/PDIF - IEC958) E spx Ogg Speex DE srt SubRip subtitle D stl Spruce subtitle format E stream_segment,ssegment streaming segment muxer D subviewer SubViewer subtitle format D subviewer1 SubViewer v1 subtitle format D sunrast_pipe piped sunrast sequence DE sup raw HDMV Presentation Graphic Stream subtitles D svag Konami PS2 SVAG E svcd MPEG-2 PS (SVCD) D svg_pipe piped svg sequence DE swf SWF (ShockWave Flash) D tak raw TAK D tedcaptions TED Talks captions E tee Multiple muxer tee D thp THP D tiertexseq Tiertex Limited SEQ D tiff_pipe piped tiff sequence D tmv 8088flex TMV DE truehd raw TrueHD DE tta TTA (True Audio) D tty Tele-typewriter D txd Renderware TeXture Dictionary D ty TiVo TY Stream DE u16be PCM unsigned 16-bit big-endian DE u16le PCM unsigned 16-bit little-endian DE u24be PCM unsigned 24-bit big-endian DE u24le PCM unsigned 24-bit little-endian DE u32be PCM unsigned 32-bit big-endian DE u32le PCM unsigned 32-bit little-endian DE u8 PCM unsigned 8-bit E uncodedframecrc uncoded framecrc testing D v210 Uncompressed 4:2:2 10-bit D v210x Uncompressed 4:2:2 10-bit D vag Sony PS2 VAG DE vc1 raw VC-1 video DE vc1test VC-1 test bitstream E vcd MPEG-1 Systems / MPEG program stream (VCD) D vfwcap VfW video capture D vivo Vivo D vmd Sierra VMD E vob MPEG-2 PS (VOB) D vobsub VobSub subtitle format DE voc Creative Voice D vpk Sony PS2 VPK D vplayer VPlayer subtitles D vqf Nippon Telegraph and Telephone Corporation (NTT) TwinVQ DE w64 Sony Wave64 DE wav WAV / WAVE (Waveform Audio) D wc3movie Wing Commander III movie E webm WebM E webm_chunk WebM Chunk Muxer DE webm_dash_manifest WebM DASH Manifest E webp WebP D webp_pipe piped webp sequence DE webvtt WebVTT subtitle D wsaud Westwood Studios audio D wsd Wideband Single-bit Data (WSD) D wsvqa Westwood Studios VQA DE wtv Windows Television (WTV) DE wv raw WavPack D wve Psion 3 audio D xa Maxis XA D xbin eXtended BINary text (XBIN) D xmv Microsoft XMV D xpm_pipe piped xpm sequence D xvag Sony PS3 XVAG D xwma Microsoft xWMA D yop Psygnosis YOP DE yuv4mpegpipe YUV4MPEG pipe
根据上图可以看到，在输出的内容中，分为三部分：

第一列是多媒体文件格式的Demuxing支持与Muxing支持；

第二列是多媒体文件格式；

第三列是文件格式的详细说明。

其他大类的查看
Default audio codec: mp3. flv muxer AVOptions: -flvflags <flags> E........ FLV muxer flags (default 0) aac_seq_header_detect E........ Put AAC sequence header based on stream data no_sequence_end E........ disable sequence end for FLV no_metadata E........ disable metadata for FLV no_duration_filesize E........ disable duration and filesize zero value metadata for FLV add_keyframe_index E........ Add keyframe index metadata
从输出的帮助信息可以看到，FLV的muxer的信息包含两大部分：

第一部分为FLV封装的默认配置描述，如扩展名，MIME类型，默认的视频编码格式，默认的音频编码格式。

第二部分为FLV封装时可以支持的配置参数及相关说明。

查看flv解封装器的参数支持

命令：ffmpeg -h demuxer=flv

Demuxer flv [FLV (Flash Video)]: Common extensions: flv. flvdec AVOptions: -flv_metadata <boolean> .D.V..... Allocate streams according to the onMetaData array (default false) -missing_streams <int> .D.V..XR. (from 0 to 255) (default 0) 从输出的帮助信息可以看到，FLV的demuxer的信息包含两大部分：第一部分为FLV解封装默认的扩展名。第二部分为FLV解封装时可以支持的配置参数及相关说明。查看H264（AVC）的编码参数支持 ffmpeg -h encoder=h264 显示所有的h264编码器 ffmpeg -h encoder=libx264 只显示libx264 这里只显示libx264 Encoder libx264 [libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10]: General capabilities: delay threads Threading capabilities: auto Supported pixel formats: yuv420p yuvj420p yuv422p yuvj422p yuv444p yuvj444p nv12 nv16 nv21 yuv420p10le yuv422p10le y uv444p10le nv20le libx264 AVOptions: -preset <string> E..V..... Set the encoding preset (cf. x264 --fullhelp) (default "medium") -tune <string> E..V..... Tune the encoding params (cf. x264 --fullhelp) -profile <string> E..V..... Set profile restrictions (cf. x264 --fullhelp) -fastfirstpass <boolean> E..V..... Use fast settings when encoding first pass (default true) -level <string> E..V..... Specify level (as defined by Annex A) -passlogfile <string> E..V..... Filename for 2 pass stats -wpredp <string> E..V..... Weighted prediction for P-frames -a53cc <boolean> E..V..... Use A53 Closed Captions (if available) (default true) -x264opts <string> E..V..... x264 options -crf <float> E..V..... Select the quality for constant quality mode (from -1 to FLT_MAX) (default - -crf_max <float> E..V..... In CRF mode, prevents VBV from lowering quality beyond this point. (from -1 to FLT_MAX) (default -1) -qp <int> E..V..... Constant quantization parameter rate control method (from -1 to INT_MAX) (de fault -1) -aq-mode <int> E..V..... AQ method (from -1 to INT_MAX) (default -1) none E..V..... variance E..V..... Variance AQ (complexity mask) autovariance E..V..... Auto-variance AQ autovariance-biased E..V..... Auto-variance AQ with bias to dark scenes -aq-strength <float> E..V..... AQ strength. Reduces blocking and blurring in flat and textured areas. (from -1 to FLT_MAX) (default -1) -psy <boolean> E..V..... Use psychovisual optimizations. (default auto) -psy-rd <string> E..V..... Strength of psychovisual optimization, in <psy-rd>:<psy-trellis> format. -rc-lookahead <int> E..V..... Number of frames to look ahead for frametype and ratecontrol (from -1 to INT _MAX) (default -1) -weightb <boolean> E..V..... Weighted prediction for B-frames. (default auto) -weightp <int> E..V..... Weighted prediction analysis method. (from -1 to INT_MAX) (default -1) none E..V..... simple E..V..... smart E..V..... -ssim <boolean> E..V..... Calculate and print SSIM stats. (default auto) -intra-refresh <boolean> E..V..... Use Periodic Intra Refresh instead of IDR frames. (default auto) -bluray-compat <boolean> E..V..... Bluray compatibility workarounds. (default auto) -b-bias <int> E..V..... Influences how often B-frames are used (from INT_MIN to INT_MAX) (default IN T_MIN) -b-pyramid <int> E..V..... Keep some B-frames as references. (from -1 to INT_MAX) (default -1) none E..V..... strict E..V..... Strictly hierarchical pyramid normal E..V..... Non-strict (not Blu-ray compatible) -mixed-refs <boolean> E..V..... One reference per partition, as opposed to one reference per macroblock (def ault auto) -8x8dct <boolean> E..V..... High profile 8x8 transform. (default auto) -fast-pskip <boolean> E..V..... (default auto) -aud <boolean> E..V..... Use access unit delimiters. (default auto) -mbtree <boolean> E..V..... Use macroblock tree ratecontrol. (default auto) -deblock <string> E..V..... Loop filter parameters, in <alpha:beta> form. -cplxblur <float> E..V..... Reduce fluctuations in QP (before curve compression) (from -1 to FLT_MAX) (d efault -1) -partitions <string> E..V..... A comma-separated list of partitions to consider. Possible values: p8x8, p4x 4, b8x8, i8x8, i4x4, none, all -direct-pred <int> E..V..... Direct MV prediction mode (from -1 to INT_MAX) (default -1) none E..V..... spatial E..V..... temporal E..V..... auto E..V..... -slice-max-size <int> E..V..... Limit the size of each slice in bytes (from -1 to INT_MAX) (default -1) -stats <string> E..V..... Filename for 2 pass stats -nal-hrd <int> E..V..... Signal HRD information (requires vbv-bufsize; cbr not allowed in .mp4) (from -1 to INT_MAX) (default -1) none E..V..... vbr E..V..... cbr E..V..... -avcintra-class <int> E..V..... AVC-Intra class 50/100/200 (from -1 to 200) (default -1) -me_method <int> E..V..... Set motion estimation method (from -1 to 4) (default -1) dia E..V..... hex E..V..... umh E..V..... esa E..V..... tesa E..V..... -motion-est <int> E..V..... Set motion estimation method (from -1 to 4) (default -1) dia E..V..... hex E..V..... umh E..V..... esa E..V..... tesa E..V..... -forced-idr <boolean> E..V..... If forcing keyframes, force them as IDR frames. (default false) -coder <int> E..V..... Coder type (from -1 to 1) (default default) default E..V..... cavlc E..V..... cabac E..V..... vlc E..V..... ac E..V..... -b_strategy <int> E..V..... Strategy to choose between I/P/B-frames (from -1 to 2) (default -1) -chromaoffset <int> E..V..... QP difference between chroma and luma (from INT_MIN to INT_MAX) (default -1) -sc_threshold <int> E..V..... Scene change threshold (from INT_MIN to INT_MAX) (default -1) -noise_reduction <int> E..V..... Noise reduction (from INT_MIN to INT_MAX) (default -1) -x264-params <string> E..V..... Override the x264 configuration using a :-separated list of key=value parame 更多的x264参数见 cf. x264 --fullhelp x264 参数详解查看音频支持的PCM格式以及声道布局 ffmpeg.exe -sample_fmts name depth u8 8 s16 16 s32 32 flt 32 dbl 64 u8p 8 s16p 16 s32p 32 fltp 32 dblp 64 s64 64 s64p 64 ffmpeg.exe -layouts Individual channels: NAME DESCRIPTION FL front left FR front right FC front center LFE low frequency BL back left BR back right FLC front left-of-center FRC front right-of-center BC back center SL side left SR side right TC top center TFL top front left TFC top front center TFR top front right TBL top back left TBC top back center TBR top back right DL downmix left DR downmix right WL wide left WR wide right SDL surround direct left SDR surround direct right LFE2 low frequency 2 Standard channel layouts: NAME DECOMPOSITION mono FC stereo FL+FR 2.1 FL+FR+LFE 3.0 FL+FR+FC 3.0(back) FL+FR+BC 4.0 FL+FR+FC+BC quad FL+FR+BL+BR quad(side) FL+FR+SL+SR 3.1 FL+FR+FC+LFE 5.0 FL+FR+FC+BL+BR 5.0(side) FL+FR+FC+SL+SR 4.1 FL+FR+FC+LFE+BC 5.1 FL+FR+FC+LFE+BL+BR 5.1(side) FL+FR+FC+LFE+SL+SR 6.0 FL+FR+FC+BC+SL+SR 6.0(front) FL+FR+FLC+FRC+SL+SR hexagonal FL+FR+FC+BL+BR+BC 6.1 FL+FR+FC+LFE+BC+SL+SR 6.1(back) FL+FR+FC+LFE+BL+BR+BC 6.1(front) FL+FR+LFE+FLC+FRC+SL+SR 7.0 FL+FR+FC+BL+BR+SL+SR 7.0(front) FL+FR+FC+FLC+FRC+SL+SR 7.1 FL+FR+FC+LFE+BL+BR+SL+SR 7.1(wide) FL+FR+FC+LFE+BL+BR+FLC+FRC 7.1(wide-side) FL+FR+FC+LFE+FLC+FRC+SL+SR octagonal FL+FR+FC+BL+BR+BC+SL+SR hexadecagonal FL+FR+FC+BL+BR+BC+SL+SR+TFL+TFC+TFR+TBL+TBC+TBR+WL+WR downmix DL+DR 更多资料，更多分享音视频技术交流群1 已满音视频技术交流群2 已满音视频技术交流群3 群号782508536