*/ int frame_size; int frame_number; ///< audio or video frame number ... char codec_name[32]; enum AVMediaType codec_type; /* see AVMEDIA_TYPE_xxx */ enum CodecID codec_id; /* see CODEC_ID_xxx */ /** * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) ...
*/ int frame_size; int frame_number; ///< audio or video frame number ... char codec_name[32]; enum AVMediaType codec_type; /* see AVMEDIA_TYPE_xxx */ enum CodecID codec_id; /* see CODEC_ID_xxx */ /** * fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) ...
AI代码解释 For planar sample formats,each audio channel isina separate data plane,*and linesize is the buffer size,inbytes,fora single plane.All data*planes must be the same size.For packed sample formats,only the first data*plane is used,and samplesforeach channel are interleaved.Inthiscase,...
6、将一个mp4文件的音视频流实时转码之后发送给某个远程设备,远程设备可以通过http获取的sdp文件来接收rtp媒体数据。 ffmpeg-re-i example.mp4-acodec copy-vcodec libx264-s480x270-map0:0-f rtp rtp://10.131.202.62:1234 -map 0:1 -f rtp rtp://10.131.202.62:1238 > /var/www/live.sdp 编译和裁剪...
ffmpeg -i rtsp://10.11.111.162:8554/live -vcodec copy -an -y capture_without_audio.mp4 上面的命令捕获 rtsp 协议直播流的内容,然后去除捕获内容中的音频流数据,只将捕获内容中的视频流内容存储到本地文件“capture_without_audio.mp4”中。 -an (input/output): ...
ffmpeg is a very fastvideo and audio converterthat can also grab from a live audio/video source. It can alsoconvert between arbitrary sample rates and resize videoon the fly with a high quality polyphase filter. ffmpeg主要作用是音视频转换, 这里转换有两个含义, 一个是封装容器的转换(比如mp4转...
avcodec_encode_audio2():编码一个音频AVFrame为AVPacket。 av_interleaved_write_frame():将编码后的AVPacket写入文件。 代码 贴上代码 /* *最简单的基于FFmpeg的转码器 *Simplest FFmpeg Transcoder * *雷霄骅 Lei Xiaohua *leixiaohua1020@126.com
/* remux this frame without reencoding */ av_packet_rescale_ts(&packet, ifmt_ctx->streams[stream_index]->time_base, ofmt_ctx->streams[stream_index]->time_base); ret = av_interleaved_write_frame(ofmt_ctx, &packet); if (ret < 0) ...
-re以本地帧频读数据,主要用于模拟捕获设备 -loop循环输入流。只工作于图像流,用于ffserver测试 四.FFMPEG与x264的编译 参考: FFmpegx264encodingguide May17th,2010LeaveacommentGotocomments PresetfilesareavailablefromtheFFmpegsourcecodeintheffpresetssubdirectory.Usingthe ...
int Decode_packet(IOFileName &files, DemuxingVideoAudioContex &va_ctx, int *got_frame, int cached) { int ret = 0; int decoded = va_ctx.pkt.size; static int video_frame_count = 0; static int audio_frame_count = 0; *got_frame = 0; if (va_ctx.pkt.stream_index == va_ctx.vide...