av_buffersink_set_frame_size(buffersink_ctx, output_audio_encode_ctx->frame_size); end: //释放对应的输入输出 avfilter_inout_free(&inputs); avfilter_inout_free(&outputs); return ret; } //输出变声之后的数据帧 static int output_frame(AVFrame *frame) { int code; int ret = avcodec_send_...
-vframes number set the number of video frames to output -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 ...
* - 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...
-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 display horizontal flip for stream(s) (overrides any display rotation if it...
-s size set frame size (WxH or abbreviation) -fs force full screen -an disable audio -vn disable video -sn disable subtitling -ss pos seek to a given position in seconds -t duration play "duration" seconds of audio/video -bytes val seek by bytes 0=off 1=on -1=auto ...
-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 ...
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...
一般设置AVFrame.nb_samples = AVCodecContext.frame_size; 所以,每次编码之前必须设置frame的参数,下面的sample是我从PCM文件中读取数据,并编码的程序片段。 pAudioFrame = avcodec_alloc_frame(); pAudioFrame->nb_samples= pAudioEncodeCtx->frame_size; ...
ffmpeg.exe -i F:\闪客之家\闪客之歌.mp3 -ab 56 -ar 22050 -b 500 -r 15 -s 320x240 f:\11.flv ffmpeg -i F:\01.wmv -ab 56 -ar 22050 -b500 -r 15 -s 320x240 f:\test.flv 使用-ss参数 作用(time_off set the start time offset),可以从指定时间点开始转换任务。如: ...