FFMPEG-CODECS(1) (NAME) ffmpeg-codecs - FFmpeg (DESCRIPTION) ( ) libavcodec . libavcodec . (CODEC OPTIONS) libavcodec . (private options) . FFmpeg -option value "AVCodecContext" libavutil/opt.h . : b () (bitrate) . 200K . ab () . 128K . bt () . flags (/) . mv4 qpel loop gray psnr pass1 pass2 drop_frame . flags2 (/) fast noout ignorecrop showall export_mvs. time_base . g () (GOP size Intra). ar (/) (audio sampling rate) . ac (/) . cutoff () . frame_size () . qscale () (VBR/CQ). qmin / qmax () . bf () B B. threads (/) (Threads) . 0 auto . thread_type (/) : slice ( ) frame ( ). (DECODERS) (Decoders) . (VIDEO DECODERS) : h264 / hevc AVC/H.264 HEVC/H.265 x86 ARM VAAPI VDPAU NVDEC D3D11VA. vp8 / vp9 / av1 (AOMedia) (libdav1d) AV1. mjpeg JPEG Motion JPEG. rawvideo YUV420P RGB24 NV12. (AUDIO DECODERS) aac AAC ( LC HE-AAC LD ELD). flac FLAC. mp3 / mp3float MPEG-1/2 Audio Layer III . opus / vorbis Opus Ogg Vorbis. (SUBTITLES DECODERS) ass / ssa Advanced SubStation Alpha. subrip / srt SubRip. dvdsub / pgs (Bitmap) DVD Blu-ray. (ENCODERS) (Encoders) . (AUDIO ENCODERS) aac FFmpeg AAC. : aac_coder : twoloop anmr fast. aac_ms / (Mid/Side stereo). libmp3lame LAME MP3 . (-b:a) VBR (-q:a). libopus Opus . (VIDEO ENCODERS) libx264 H.264/MPEG-4 AVC. : preset : ultrafast superfast veryfast faster fast medium () slow slower veryslow. tune : film animation grain stillimage fastdecode zerolatency. crf (Constant Rate Factor) 0 51 ( 23 ). x264opts / x264-params libx264 =. libx265 H.265 / HEVC 4K H.264 . libvpx / libvpx-vp9 VP8 VP9 WebM. libaom-av1 / libsvtav1 AV1 . nvenc / vaapi / qsv NVIDIA Intel (CPU). (SUBTITLES ENCODERS) srt / subrip SubRip. ass Advanced SubStation Alpha. mov_text GPP/MPEG-4 MP4 . (SEE ALSO) ffmpeg(1), ffplay(1), ffprobe(1), ffmpeg-utils(1), ffmpeg-scaler(1), ffmpeg-resampler(1), ffmpeg-bitstream-filters(1), ffmpeg-formats(1), ffmpeg-devices(1), ffmpeg-protocols(1), ffmpeg-filters(1), libavcodec(3) (AUTHORS) FFmpeg. . FFmpeg FFMPEG-CODECS(1)