Working on mobile DietPi emby sever, but have audio issue

[NotYourErnst 1]

Hi
I'm working on a mobile Emby Server which I can take with me in the car, plane and vacation for the kids.
As a server I'm using a Dell Wyse 3040 with integrated wifi card and attached a USB stick for the content to it. As OS i'm using Dietpi. Power comes from a powerbank.
Everything works like a charm, with the Emby app, BUT when I try to use a browser from a notebook I don't get audio to work.
I tested several notebooks and browser already.
As the unit has not enough performance I configred it for direct play.

Any idea?

For example:

Stream

 

MKV (5 mbps)

Direktwiedergabe

Video

 

1080p HEVC

Main 120 5 mbps 24 fps

Direktwiedergabe

Dropped Frames

1

Audio

 

German AC3 stereo (Standard)

384 kbps 48000 Hz

Direktwiedergabe

embyserver.txt

[NotYourErnst 1]

After activation of audio transcoding it works fine. Any other possibility without transcoding?
The 3040 doesn't has so much performance if multiple streams are in use.

[Neminem 1846]

I think the best codex for browsers are still.

video : H264

Audio : AAC 2.0

Subs : text based like srt.

So It might be the AC3 is not supported by your browser.

What browser are you using and have you tried with another browser?

[NotYourErnst 1]

1 hour ago, Neminem said:

What browser are you using and have you tried with another browser?

I tried Firefox and Chorme.

[Neminem 1846]

12 minutes ago, NotYourErnst said:

I tried Firefox and Chorme.

Ok then I guess, that's it or transcode the audio to AAC Stereo.

2 hours ago, NotYourErnst said:

The 3040 doesn't has so much performance if multiple streams are in use.

But Transcoding audio should be a task it can handle, most potatoes can do this, without breaking a sweat.

Did you see what cpu usage it was using when transcoding audio?

[NotYourErnst 1]

On 7/21/2026 at 2:24 PM, Neminem said:

Did you see what cpu usage it was using when transcoding audio?

Two streams 50% CPU usage.

Still looking for a Powerbank, which could deliver constant power for it, everything else works fine now.

[Neminem 1846]

This might be overkill for a simple road trip.

Ecoflow but nice to have if you get strandet.

Amazon.com: EF ECOFLOW: 𝐎𝐮𝐭𝐝𝐨𝐨𝐫 𝐒𝐞𝐚𝐬𝐨𝐧 

[NotYourErnst 1]

Absolut overkill  
Currently running a test with an old Anker powercore 13000. Lets see how long it will last with two streams running.