//创建解码器 m_VideoDecoder = new VideoDecoder(url); m_AudioDecoder = new AudioDecoder(url); //设置渲染器 m_VideoDecoder->SetVideoRender(OpenGLRender::GetInstance()); m_AudioRender = new OpenSLRender(); m_AudioDecoder->SetVideoRender(m_AudioRender); //设置音频时间戳回调 m_VideoDecoder-...
Stream #0:0: Audio: mp3, 48000 Hz, stereo, fltp, 128 kb/s Stream #0:1: Video: flv1, yuv420p, 1920x1080, 200 kb/s, 25 fps, 25 tbr, 1k tbn $ ffmpeg -i cctv1.flv -vn -acodec aac cctv1.aac $ ffprobe cctv1.aac Input #0, aac, from 'cctv1.aac': Duration: 00:00:...
到这里已经知道了video中frame的显示时间了(秒为单位),下面就描述如果得到Audio的播放时间,并以此时间为基准来安排video中显示时间。 获取Audio Clock Audio Clock,也就是Audio的播放时长,可以在Audio时更新Audio Clock。在函数audio_decode_frame中解码新的packet,这是可以设置Auddio clock为该packet的PTS if (pkt.p...
1、视频分离成图片序列:video—to—images(即视频帧) 2、图片序列合成视频:images—to—video 3、视频分离成无声视频和音频:video—to—video&audio 4、视频剪切:cut [参考](https://fzheng.me/2016/01/08/ffmpeg/) 5、视频格式转换:format transfer 5、调整视频播放速度 (其他倍速调整相应的倍率即可)[参考]...
1.intopen_output(constchar*filename,AVDictionary*opt)2.{3.4.printf("open_output\n");5.staticOutputStream video_st = {0}, audio_st = {0};6.7.AVOutputFormat*fmt;8.AVFormatContext*oc;9.AVCodec*audio_codec, *video_codec;10.intret;11.inthave_video =0, have_audio =0;12.intencode_video...
运行FFmpeg命令addAudioToVideo(videoPath,audioPath,outputPath);}publicstaticvoidaddAudioToVideo(StringvideoPath,StringaudioPath,StringoutputPath){// 构建FFmpeg命令Stringcommand=String.format("ffmpeg -i %s -i %s -c:v copy -c:a aac -strict experimental -shortest %s",videoPath,audioPath,outputPath)...
● 摄像头: ffmpeg -f dshow -i video="Integrated Webcam" -y v-out2.flv (要根据自己摄像头名称) 录制声音(默认参数) ● 系统声音:ffmpeg -f dshow -i audio="virtual-audio-capturer" a-out.aac ● 系统+麦克风声音:ffmpeg -f dshow -i audio="麦克风 (Realtek Audio)"-f dshow -i audio="...
ffmpeg \ -i video1.mp4 \ -map 0:v \ -c copy \ -y output.mp4 The mapping refers only to-map 0:vmeaning the video streams from input #0. Remove a particular audio track If the video file has more than one audio track, you can selectively remove any track. For example, the follo...
enum{AV_SYNC_AUDIO_MASTER,/* default choice */AV_SYNC_VIDEO_MASTER,AV_SYNC_EXTERNAL_CLOCK,/* synchronize to an external clock */}; 2.4.1 time_base time_base是PTS和DTS的时间单位,也称时间基。 不同的封装格式time_base不一样,转码过程中的不同阶段time_base也不一样。
C:/FFMPEG/ffmpeg_x86_4.2.2/bin/ffmpeg.exe -f gdigrab -i desktop -f dshow -i audio="@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{6E399CBA-5F7D-443F-9071-1657DE0F5483}" -vcodec libx264 -acodec libmp3lame -s 1280x720 -r 15 D:/linux-share-dir/video_file/...