* - decoding: may be set by some decoders to indicate constant frame size */intframe_size; 根据2,尝试设置 AV_CODEC_CAP_VARIABLE_FRAME_SIZE ,设置方式如下: audioCodec->capabilities =AV_CODEC_CAP_VARIABLE_FRAME_SIZE; 问题解决 3、解决方法 方法一: 设置 编码器 capabilities 属性 为 AV_CODEC_C...
-r rate set frame rate (Hz value, fraction or abbreviation)设置帧率,单位Hz -s size set frame size (WxH or abbreviation)设置帧的大小 -aspect aspect set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)设置视频画面的宽高比 -bits_per_raw_sample number set the number of bits per raw sample设...
func: set frame size (WxH or abbreviation), needed for videos which do not contain a header with the frame size like raw YUV. This option has been deprecated in favor of private options, try -video_size. example: 此命令时同时设置宽高,但是执行结果却让人感到意外,提示-s这个参数已经被弃用,...
-fpsmax rate set max frame rate (Hz value, fraction or abbreviation) -s size set frame size (WxH or abbreviation) -aspect aspect set aspect ratio (4:3, 16:9 or 1.3333, 1.7777) -display_rotation angle set pure counter-clockwise rotation in degrees for stream(s) -display_hflip set disp...
-s size set frame size (WxH or abbreviation) -sn disable subtitle -scodec codec force subtitle codec ('copy' to copy stream) -stag fourcc/tag force subtitle tag/fourcc -fix_sub_duration fix subtitles duration -canvas_size size set canvas size (WxH or abbreviation) ...
Subtitle options:-s sizesetframesize(WxH or abbreviation)-sn disable subtitle-scodec codec force subtitlecodec('copy'to copy stream)-stag fourcc/tag force subtitle tag/fourcc-fix_sub_duration fix subtitles duration-canvas_size sizesetcanvassize(WxH or abbreviation)-spre presetsetthe subtitle options...
ffmpeg 中copy 参数表示不对源媒体进行转码，保留原始编码方式 m4a是音频封装（BOX），能封装mp3/aac编码...
-r rate set frame rate (Hz value, fraction or abbreviation) -s size set frame size (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 ...
ffplay -pixel_format rgb24 -video_size 320x240 -framerate 5 -i rgb24_320x240.rgb 播放PCM数据 ffplay -ar 48000 -ac 2 -f f32le 48000_2_f32le.pcm -ar set audio sampling rate (in Hz) (from 0 to INT_MAX) (default 0) -ac set number of audio channels (from 0 to INT_MAX) (...
av_dict_set(¶m, "tune", "zerolatency", 0); 1. 2. 3. 4. 5. 画质,分别是baseline, extended, main, high 1、BaselineProfile:基本画质。支持I/P 帧,只支持无交错(Progressive)和CAVLC; 2、Extendedprofile:进阶画质。支持I/P/B/SP/SI 帧,只支持无交错(Progressive)和CAVLC;(用的少) ...