Ubuntu10.04下ffmpeg选项详解
1.1 Ffmpeg选项详解
你可以使用：ffmpeg –help来获得选项内容
1.1.1 通用选项
-L license
-h 帮助
-fromats显示可用的格式，编解码的，协议的
-codecs 显示可用的编解码器
-bsfs 显示bit流过滤器
-protocols显示可用的协议
-pix_fmts显示可用的位图格式
-sample_fmts显示可用的音频采样格式
-loglevel loglevel set libav* logging level
-v loglevel set libav* logging level
-debug flags set debug flags
-fdebug flags set debug flags
-report generate a report
-f fmt强迫采用格式fmt
-i filename输入文件
-y 覆盖输出文件
-c编解码器名字
-t duration 设置纪录时间 hh:mm:ss[.xxx]格式的记录时间也支持
-ss position 搜索到指定的时间 [-]hh:mm:ss[.xxx]的格式也支持
-timestamp time 设置记录时间戳（‘now’指定当前时间）
-title string 设置标题
-author string 设置作者
-copyright string 设置版权
-comment string 设置评论
1.1.2 视频选项
-vframes number 设置记录的视频帧数
-r rate 设置帧率 (Hz value, fraction or abbreviation)
-s size 设置帧的大小 (WxH or abbreviation)
-aspect aspect set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)
-bits_per_raw_sample number set the number of bits per raw sample
-croptop size Removed, use the crop filter instead
-cropbottom size Removed, use the crop filter instead
-cropleft size Removed, use the crop filter instead
-cropright size Removed, use the crop filter instead
-padtop size Removed, use the pad filter instead
-padbottom size Removed, use the pad filter instead
-padleft size Removed, use the pad filter instead
-padright size Removed, use the pad filter instead
-padcolor color Removed, use the pad filter instead
-vn 禁用视频
-vcodec codec force video codec ('copy' to copy stream)
-sameq use same quantizer as source (implies VBR)
-same_quant use same quantizer as source (implies VBR)
-timecode hh:mm:ss[:;.]ff set initial TimeCode value.
-pass n select the pass number (1 or 2)
-passlogfile prefix select two pass log file name prefix
-vf filter list video filters
-b bitrate video bitrate (please use -b:v)
-dn disable data
1.1.3 高级视频选项
-pix_fmt format 设置位图格式
-intra deprecated use -g 1
-vdt n discard threshold
-rc_override override rate control override for specific intervals
-deinterlace this option is deprecated, use the yadif filter instead
-psnr calculate PSNR of compressed frames
-vstats dump video coding statistics to file
-vstats_file file dump video coding statistics to file
-intra_matrix matrix specify intra matrix coeffs
-inter_matrix matrix specify inter matrix coeffs
-top top=1/bottom=0/auto=-1 field first
-dc precision intra_dc_precision
-vtag fourcc/tag force video tag/fourcc
-qphist show QP histogram
-force_fps force the selected framerate, disable the best supported framerate selection
-force_key_frames timestamps force key frames at specified timestamps
-vbsf video bitstream_filters deprecated
-vpre preset set the video options to the indicated preset
1.1.4 音频选项
-aframes number set the number of audio frames to record
-aq quality set audio quality (codec-specific)
-ar rate set audio sampling rate (in Hz)
-ac channels set number of audio channels
-an disable audio
-acodec codec force audio codec ('copy' to copy stream)
-vol volume change audio volume (256=normal)
-af filter list audio filters
1.1.5 音频/视频捕获选项
-vc channel deprecated, use -channel
-tvstd standard deprecated, use -standard
-isync sync read on input
-vd device 设置视频捕获设备。比如/dev/video0
-dv1394 设置DV1394捕获
-av device 设置音频设备比如/dev/dsp
1.1.6 高级选项
-cpuflags flags force specific cpu flags
-map [-]input_file_id[:stream_specifier][,sync_file_id[:stream_s set input stream mapping
-map_channel file.stream.channel[:syncfile.syncstream] map an audio channel from one stream to another
-map_chapters input_file_index set chapters mapping
-benchmark add timings for benchmarking
-benchmark_all add timings for each task
-progress url write program-readable progress information
-dump dump 每个输入包
-hex 当 dumping包时，也dump其荷载
-re read input at native frame rate
-vsync video sync method
-async audio sync method
-adrift_threshold threshold audio drift threshold
-copyts copy timestamps
-copytb mode copy input stream time base when stream copying
-shortest finish encoding within shortest input
-dts_delta_threshold threshold timestamp discontinuity delta threshold
-dts_error_threshold threshold timestamp error delta threshold
-copyinkf copy initial non-keyframes
-q q use fixed quality scale (VBR)
-qscale q use fixed quality scale (VBR)
-profile profile set profile
-filter_complex graph_description create a complex filtergraph
-debug_ts 打印调试信息时间戳
-streamid streamIndex:value set the value of an outfile streamid
-muxdelay seconds set the maximum demux-decode delay
-muxpreload seconds set the initial demux-decode delay
-fpre filename set options from indicated preset file