ALSA sound mix problem (Youtube)
I’m not an expert of system admin or *nix machine. So I need a help.
Maybe it’s not a MM-specific question. Anyway,
WHAT I WANT… :
- playing several videos(Youtube) simultaneously in Electron / Chromium of Raspbian (Stretch)
- I just embedded 2 youtube videos together, then tried to play both by manual.
- When I play a video alone, it worked well.
- But when I play 2 videos at the same time, one is not played. And system spits out this error.
ALSA lib pcm.c:8481:(snd_pcm_set_params) Unable to set hw params for PLAYBACK: Device or resource busy
Is there anyone who experienced this? Or anyone who knows how to solve this? I think it could be related with some
Mixer, but I have no idea about ALSA at all.
In my research,
ALSA dmixis not working properly in Raspbian Stretch (or Jessie)
pulseaudiocould be used for easy mixing, but not be included and not guaranteed to be worked in Raspbian.
in RPI (model 3 B+ / Raspbian Stretch), in
getDom()I rendered belows;
< iframe width="560" height="315" src="https://www.youtube.com/embed/8CdcCD5V-d8" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen>< /iframe>
This works. but
< audio src="test.mp3" > < iframe width="560" height="315" src="https://www.youtube.com/embed/8CdcCD5V-d8" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen>< /iframe>
This doesn’t work often. but I don’t know why and when.
audiotag exists before
youtube, 100% failed. When after, sometime worked, sometime didn’t. I suspect Electron(Chromium) on RPI cannot handle multi-sound output.
I’m rebuilding my
MMM-AssistantMk2more stable, lighter and independent from some annoying dependencies, but I’m stuck on this. I’m even considering to drop youtube features from module if I cannot solve this problem. (But who cares… )