//输出DirectShow支持的设备列表 ffmpeg -list_devices true -f dshow -i dummy //打开摄像头 ffmpeg -f dshow -i video=”Camera” //打开摄像头和麦克风 ffmpeg -f dshow -i video="Camera":audio="Microphone" //输出选择设备支持的选项列表 ffmpeg -list_options true -f dshow -i video="Camera" 5...
AVDictionary* options =NULL;av_dict_set(&options,"list_devices","true",0);//0表示不区分大小写AVInputFormat* iformat =av_find_input_format("dshow");printf("===Device Info===\n");avformat_open_input(&pFormatCtx,"video=dummy", iformat, &options);printf("===\n");avformat_free_conte...
cmd中输入下面语句即可查询摄像头信息 ffmpeg -list_options true -f dshow -i video="USB2.0 PC CAMERA" ffmpeg -list_options true -f dshow -i video="USB2.0 PC CAMERA" USB2.0 PC CAMERA摄像头信息 cmd中输入下面语句即可查询麦克风信息 ffmpeg -list_options true -f dshow -i audio="麦克风 (2- U...
cmd中输入下面语句即可查询摄像头信息 ffmpeg -list_options true -f dshow -i video="USB2.0 PC CAMERA" image USB2.0 PC CAMERA摄像头信息 cmd中输入下面语句即可查询麦克风信息 ffmpeg -list_options true -f dshow -i audio="麦克风 (2- USB2.0 MIC)" image 麦克风(2- USB2.0 MIC)信息 6、本地视频的...
ffmpeg -f dshow -list_options true -i video="screen-capture-recorder" 播放视频 ffplay /** ffmpeg将视频分割 ffmpeg命令eg: ffmpeg -ss 00:00:00 -i test.mp4 -c copy -t 600 output.mp4 此处是将视频test.mp4从00:00:00处分割600s,分割出的视频名字是output.mp4 ...
```bash ffmpeg -f dshow -list_options true -i audio="麦克风 (Realtek Audio)" ``` 指定参数录制音视频 代码语言:javascript 复制 ```bash ffmpeg -f dshow -i audio="麦克风(Realtek Audio)" -f dshow -i audio="virtual-audio-capturer" -filter_complex amix=inputs=2:duration=first:dropout_tran...
AVFoundation input device AVOptions: -list_devices <int> .D... list available devices (from 0 to 1) (default false) true .D... false .D... -video_device_index <int> .D... select video device by index for devices with same name (starts at 0) (from -1 to INT_MAX) (default...
通过查看 ffmpeg 的 help full 参数可以看到 AVCodecContext AVOptions,在这个选项下面的所有参数均为编解码可以使用的参数: b:设置音频与视频码率,可以认为是音视频加起来的码率,默认为 200k;使用这个参数可以根据b:v设置视频码率,b:a设置音频码率; ab:设置音频的码率, 默认是 128k; ...
ffmpeg -f dshow -list_options true -i audio="virtual-audio-capturer“ [dshow @ 01471440] DirectShow audio only device options (from audio devices) [dshow @ 01471440] Pin "Capture Virtual Audio Pin" (alternative pin name "1") [dshow @ 01471440] min ch=2 bits=16 rate= 48000 max ch=...
-sources device list sources of the input device -sinks device list sinks of the output device -hwaccels show available HW acceleration methods Global options (affect whole program instead of just one file): -loglevel loglevel set logging level ...