前置左声道 :
FL front left
前置右声道 :
FR front right
前置中间声道 :
FC front center
低音炮 :
LFE low frequency
立体声 = 前置左声道 + 前置右声道
stereo FL+FR
单声道 = 前置中间声道
mono FC
六、显示可用的音频采样格式
帮助文档对应内容 :
-sample_fmts show available audio sample formats // 显示可用的音频采样格式
显示可用的音频采样格式命令 :
ffmpeg -sample_fmts
执行过程 :
命令行输出 :
D:\ffmpeg>ffmpeg -sample_fmts ffmpeg version n4.4-19-g8d172d9409 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 10-win32 (GCC) 20210408 configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --enable-shared --disable-static --disable-w32threads --enable-pthreads --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvorbis --enable-opencl --enable-libvmaf --enable-vulkan --enable-amf --enable-libaom --enable-avisynth --enable-libdav1d --enable-libdavs2 --enable-ffnvcodec --enable-cuda-llvm --enable-libglslang --enable-libgme --enable-libass --enable-libbluray --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --enable-libmfx --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --enable-libvidstab --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-ldexeflags= --extra-libs=-lgomp libavutil 56. 70.100 / 56. 70.100 libavcodec 58.134.100 / 58.134.100 libavformat 58. 76.100 / 58. 76.100 libavdevice 58. 13.100 / 58. 13.100 libavfilter 7.110.100 / 7.110.100 libswscale 5. 9.100 / 5. 9.100 libswresample 3. 9.100 / 3. 9.100 libpostproc 55. 9.100 / 55. 9.100 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 D:\ffmpeg>
每个音频采样为 16 位 ; 注意 s16 与 s16p 是不同的 ;
s16 16 s16p 16
七、显示可用的颜色名称
帮助文档对应内容 :
-colors show available color names // 显示可用的颜色名称
显示可用的颜色名称命令 :
执行过程 :
命令行输出 :
D:\ffmpeg>ffmpeg -colors ffmpeg version n4.4-19-g8d172d9409 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 10-win32 (GCC) 20210408 configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --enable-shared --disable-static --disable-w32threads --enable-pthreads --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvorbis --enable-opencl --enable-libvmaf --enable-vulkan --enable-amf --enable-libaom --enable-avisynth --enable-libdav1d --enable-libdavs2 --enable-ffnvcodec --enable-cuda-llvm --enable-libglslang --enable-libgme --enable-libass --enable-libbluray --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --enable-libmfx --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --enable-libvidstab --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-ldexeflags= --extra-libs=-lgomp libavutil 56. 70.100 / 56. 70.100 libavcodec 58.134.100 / 58.134.100 libavformat 58. 76.100 / 58. 76.100 libavdevice 58. 13.100 / 58. 13.100 libavfilter 7.110.100 / 7.110.100 libswscale 5. 9.100 / 5. 9.100 libswresample 3. 9.100 / 3. 9.100 libpostproc 55. 9.100 / 55. 9.100 name #RRGGBB AliceBlue #f0f8ff AntiqueWhite #faebd7 Aqua #00ffff Aquamarine #7fffd4 Azure #f0ffff Beige #f5f5dc Bisque #ffe4c4 Black #000000 BlanchedAlmond #ffebcd Blue #0000ff BlueViolet #8a2be2 Brown #a52a2a BurlyWood #deb887 CadetBlue #5f9ea0 Chartreuse #7fff00 Chocolate #d2691e Coral #ff7f50 CornflowerBlue #6495ed Cornsilk #fff8dc Crimson #dc143c Cyan #00ffff DarkBlue #00008b DarkCyan #008b8b DarkGoldenRod #b8860b DarkGray #a9a9a9 DarkGreen #006400 DarkKhaki #bdb76b DarkMagenta #8b008b DarkOliveGreen #556b2f Darkorange #ff8c00 DarkOrchid #9932cc DarkRed #8b0000 DarkSalmon #e9967a DarkSeaGreen #8fbc8f DarkSlateBlue #483d8b DarkSlateGray #2f4f4f DarkTurquoise #00ced1 DarkViolet #9400d3 DeepPink #ff1493 DeepSkyBlue #00bfff DimGray #696969 DodgerBlue #1e90ff FireBrick #b22222 FloralWhite #fffaf0 ForestGreen #228b22 Fuchsia #ff00ff Gainsboro #dcdcdc GhostWhite #f8f8ff Gold #ffd700 GoldenRod #daa520 Gray #808080 Green #008000 GreenYellow #adff2f HoneyDew #f0fff0 HotPink #ff69b4 IndianRed #cd5c5c Indigo #4b0082 Ivory #fffff0 Khaki #f0e68c Lavender #e6e6fa LavenderBlush #fff0f5 LawnGreen #7cfc00 LemonChiffon #fffacd LightBlue #add8e6 LightCoral #f08080 LightCyan #e0ffff LightGoldenRodYellow #fafad2 LightGreen #90ee90 LightGrey #d3d3d3 LightPink #ffb6c1 LightSalmon #ffa07a LightSeaGreen #20b2aa LightSkyBlue #87cefa LightSlateGray #778899 LightSteelBlue #b0c4de LightYellow #ffffe0 Lime #00ff00 LimeGreen #32cd32 Linen #faf0e6 Magenta #ff00ff Maroon #800000 MediumAquaMarine #66cdaa MediumBlue #0000cd MediumOrchid #ba55d3 MediumPurple #9370d8 MediumSeaGreen #3cb371 MediumSlateBlue #7b68ee MediumSpringGreen #00fa9a MediumTurquoise #48d1cc MediumVioletRed #c71585 MidnightBlue #191970 MintCream #f5fffa MistyRose #ffe4e1 Moccasin #ffe4b5 NavajoWhite #ffdead Navy #000080 OldLace #fdf5e6 Olive #808000 OliveDrab #6b8e23 Orange #ffa500 OrangeRed #ff4500 Orchid #da70d6 PaleGoldenRod #eee8aa PaleGreen #98fb98 PaleTurquoise #afeeee PaleVioletRed #d87093 PapayaWhip #ffefd5 PeachPuff #ffdab9 Peru #cd853f Pink #ffc0cb Plum #dda0dd PowderBlue #b0e0e6 Purple #800080 Red #ff0000 RosyBrown #bc8f8f RoyalBlue #4169e1 SaddleBrown #8b4513 Salmon #fa8072 SandyBrown #f4a460 SeaGreen #2e8b57 SeaShell #fff5ee Sienna #a0522d Silver #c0c0c0 SkyBlue #87ceeb SlateBlue #6a5acd SlateGray #708090 Snow #fffafa SpringGreen #00ff7f SteelBlue #4682b4 Tan #d2b48c Teal #008080 Thistle #d8bfd8 Tomato #ff6347 Turquoise #40e0d0 Violet #ee82ee Wheat #f5deb3 White #ffffff WhiteSmoke #f5f5f5 Yellow #ffff00 YellowGreen #9acd32 D:\ffmpeg>
前者是别名 , 后面是 RGB 颜色值 , 这 3 33 个分量 , 每个分量占 1 11 字节 , 橙色 的颜色值为 # f f a 500 \rm \#ffa500#ffa500 ;
Orange #ffa500
