[英]Is the format of a Windows audio loopback capture fixed? Or is it sound card dependent?
[英]Windows Ffmpeg - send audio to sound card's output
I have a sound card (Behringer UMC202HD) which connected to a Windows 10 computer by usb cable, i am able to recieve audio from input device with the following ffmpeg command: ffmpeg -f dshow -i audio="IN 1-2 (BEHRINGER UMC 202HD 192k)" -map_channel 0.0.0 -c:a pcm_s24le first_channel.wav -map_channel 0.0.1 -c:a pcm_s24le second_channel.wav
但是我无法使用 ffmpeg 将音频发送到声卡的 output,有什么办法吗? 如果有,我该怎么做?
我在 Windows 中尝试做的 Linux 版本(伪命令):
ffmpeg -i my_input.wav -f alsa alsa.behringer_out
我找不到使用 ffmpeg.exe 的方法,但是,我用 ffplay 找到了一个简单的方法:
Set the system's output to sound card from Windows sound settings and turn on mono audio option, simply run this code for send the output audio card's channel 1:
ffplay -i input.mp4 -af pan="stereo|c1=c1" -nodisp
对于通道 0 和通道 1:
ffplay -i input.mp4 -af pan="stereo|c0=c0|c1=c1" -nodisp
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