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瓦苏普。
我有 shell 命令。

ffmpeg -list_devices true -f dshow -i dummy -hide_banner

当我运行该命令时，我得到输出数据（见下文）

[dshow @ 00000281450fbdc0] DirectShow video devices (some may be both video and audio devices)
[dshow @ 00000281450fbdc0]  "HD WebCam"
[dshow @ 00000281450fbdc0]     Alternative name "@device_pnp_\\?\usb#vid_0408&pid_a060&mi_00#6&391c16c1&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global"
[dshow @ 00000281450fbdc0] DirectShow audio devices

[dshow @ 00000281450fbdc0]  "Microphone (Realtek High Definition Audio)"
[dshow @ 00000281450fbdc0]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{4727F33A-DE04-4706-8312-03696FACC791}"
[dshow @ 00000281450fbdc0]  "Stereo mix (Realtek High Definition Audio)"
[dshow @ 00000281450fbdc0]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{534A8FBC-6C02-4384-B51C-D0363BB7F8FD}"
[dshow @ 00000281450fbdc0]  "Microphone (Avsoft Virtual Audio Device)"
[dshow @ 00000281450fbdc0]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{5CE20B48-361E-4B96-B113-B3E02BA448EC}"
dummy: Immediate exit requested

我必须获取所有音频设备的列表。而且我不想解析那个字符串，我会很难的。如何使用 ffmpeg-python 模块获取所有音频设备的列表？感谢你。

UPD：我决定解析那个字符串。但是当我输入：

command = subprocess.check_output('ffmpeg -list_devices true -f dshow -i dummy -hide_banner', shell=True)

我收到此错误：

subprocess.CalledProcessError: Command 'ffmpeg -list_devices true -f dshow -i dummy -hide_banner' returned non-zero exit status 1.


我如何调用该命令并将其结果放入我的变量“命令”中？

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1 回答 1

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command = subprocess.run('ffmpeg -list_devices true -f dshow -i dummy -hide_banner', shell=True, stderr=subprocess.PIPE, text=True, encoding='utf-8')
print(command.stderr)
于 2020-10-03T14:22:17.337 回答