How to play audio from ffmpeg?

[Manieck71]

Hi

System Mobian.
I run in terminal
ffmpeg -i file.wav -f alsa hw:0
but nothing is heard

How to configure?
How to switch between handset and loudspeaker?

[Kevin Kofler]

Use -f pulse, not -f alsa. You want to output through PulseAudio/Pipewire, not directly through ALSA, because the raw ALSA device is normally already opened and reserved by PulseAudio or Pipewire. (Note that Pipewire supports the PulseAudio protocol, so -f pulse will work for both.)

[Manieck71]

Use -f pulse, not -f alsa. You want to output through PulseAudio/Pipewire, not directly through ALSA, because the raw ALSA device is normally already opened and reserved by PulseAudio or Pipewire. (Note that Pipewire supports the PulseAudio protocol, so -f pulse will work for both.)

I did as you wrote, but still no sound.

[Gumur]

The file is "xxx.way" or "xxx.wav"?

[Manieck71]

The file is "xxx.way" or "xxx.wav"?

Of course xxx.wav :-) My mistake.

---

Use -f pulse, not -f alsa. You want to output through PulseAudio/Pipewire, not directly through ALSA, because the raw ALSA device is normally already opened and reserved by PulseAudio or Pipewire. (Note that Pipewire supports the PulseAudio protocol, so -f pulse will work for both.)

Unfortunately using pulse still doesn't work.
I installed Kali System and it plays sound on the speaker using alsa and pulse.
How do I switch to built-in headphones?

[Kevin Kofler]

What do you mean by "built-in headphones"? The earpiece? Or the headphone port (but then the headphones are not "built-in", only the port is)?

The former can be selected with:
pactl set-sink-port 0 '[Out] Earpiece'
the latter with:
pactl set-sink-port 0 '[Out] Headphones'
and to switch back to the speaker, use:
pactl set-sink-port 0 '[Out] Speaker'

[Manieck71]

What do you mean by "built-in headphones"? The earpiece? Or the headphone port (but then the headphones are not "built-in", only the port is)?

The former can be selected with:
pactl set-sink-port 0 '[Out] Earpiece'
the latter with:
pactl set-sink-port 0 '[Out] Headphones'
and to switch back to the speaker, use:
pactl set-sink-port 0 '[Out] Speaker'

Yes, I mean the earpiece.

[Manieck71]

What do you mean by "built-in headphones"? The earpiece? Or the headphone port (but then the headphones are not "built-in", only the port is)?

The former can be selected with:
pactl set-sink-port 0 '[Out] Earpiece'
the latter with:
pactl set-sink-port 0 '[Out] Headphones'
and to switch back to the speaker, use:
pactl set-sink-port 0 '[Out] Speaker'

Yes, I mean the earpiece.

Thank you, it works!

[Manieck71]

It works on Kali and Ubuntu but won't work on Mobian.
I have silence all the time

[Kevin Kofler]

Well, open up a volume control GUI (on Plasma Mobile, it is in the settings under "Audio", I don't know where it is on Phosh) and check that the earpiece is not muted and that its volume is not zero. Normally, if you set a reasonable volume once, it should remember it next time you switch to the earpiece. Though I have seen various volume control bugs resetting some volumes to zero for whatever reason, so I cannot promise that it will not end up back at zero at some point in the future.