(音视频学习笔记):ffmpeg命令音视频录制

  • 【说明】课程学习地址:https://ke.qq.com/course/468797

目录

ffmpeg命令视频录制

音视频录制

查看视频录制的可选参数

查看音频设备可选参数

指定参数录制音视频

ffmpeg命令视频录制

  • ①安装dshow软件 Screen Capturer Recorder,
    • 项目地址:https://sourceforge.net/projects/screencapturer/files/
  • ②查看可用设备名字:
 ffmpeg  -list_devices true -f dshow -i dummy
  • ③输入命令:DirectShow video devices (some may be both video and audio devices)
    • "Integrated Webcam" //笔记本摄像头
    • "screen-capture-recorder"
  • ④输入命令:DirectShow audio devices
    • "麦克风(Realtek Audio)"
    • "virtual-audio-capturer"

音视频录制

【录制视频(默认参数)】

  • 桌面:
ffmpeg -f dshow -i video="screen-capture-recorder" v-out.mp4
  • 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-cap
  • 系统+麦克风声音:
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_transition=2 a-out2.aac

【同时录制声音和视频(默认参数)】

ffmpeg -f dshow -i audio="麦克风 (Realtek Audio)" \
-f dshow -i audio="virtualaudio-capturer" -filter_complex amix=inputs=2:duration=first:dropout_transition=2 \
-f dshow -i video="screen-capture-recorder" -y av-out.flv

查看视频录制的可选参数

  • 命令:
ffmpeg -f dshow -list_options true -i video="screen-capture-recorder"
[dshow @ 02f0d6c0] DirectShow video device options (from video devices)
[dshow @ 02f0d6c0] Pin "Capture" (alternative pin name "1")
[dshow @ 02f0d6c0] pixel_format=bgr0 min s=1x1 fps=0.02 max s=1920x1080 fps=30
[dshow @ 02f0d6c0] pixel_format=bgr0 min s=1x1 fps=0.02 max s=1920x1080 fps=30
[dshow @ 02f0d6c0] pixel_format=bgr24 min s=1x1 fps=0.02 max s=1920x1080 fps=30
[dshow @ 02f0d6c0] pixel_format=rgb555le min s=1x1 fps=0.02 max s=1920x1080 fps=30
[dshow @ 02f0d6c0] pixel_format=rgb555le min s=1x1 fps=0.02 max s=1920x1080 fps=30
[dshow @ 02f0d6c0] pixel_format=rgb8 min s=1x1 fps=0.02 max s=1920x1080 fps=30
[dshow @ 02f0d6c0] pixel_format=yuv420p min s=1x1 fps=0.02 max s=1920x1080 fps=30

查看音频设备可选参数

ffmpeg -f dshow -list_options true -i audio="virtual-audio-capturer“
[dshow @ 05a2d6c0] DirectShow audio only device options (from audio devices)
[dshow @ 05a2d6c0] Pin "Capture Virtual Audio Pin" (alternative pin name "1")
[dshow @ 05a2d6c0] min ch=2 bits=16 rate= 48000 max ch=2 bits=16 rate= 48000
ffmpeg -f dshow -list_options true -i audio="麦克风 (Realtek Audio)

指定参数录制音视频

fmpeg -f dshow -i audio="麦克风 (Realtek Audio)" \
-f dshow -i audio="virtual-audio-capturer" -filter_complex amix=inputs=2:duration=first:dropout_transition=2 \
-f dshow -video_size 1920x1080 -framerate 15 -pixel_format yuv420p -i video="screen-capturerecorder" -vcodec h264_qsv -b:v 3M -y av-out.flv
  • 加上 -r 15
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_transition=2 \
-f dshow -i video="screen-capture-recorder" -vcodec h264_qsv -b:v 3M -r 15 -y avout2.mp4
  • 加上 -framerate 15 -pixel_format yuv420p
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_transition=2 \
-f dshow -framerate 15 -pixel_format yuv420p -i video="screen-capture-recorder" -vcodec
h264_qsv -b:v 3M -r 15 -y av-out3.mp4

 

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