DASH Manifest sets audioSamplingRate to "0"

[idanya]

For some files in our library, I can see the dash manifest audio representation contains audioSamplingRate="0"
In these cases, MPD is playing well in chrome and firefox but in IE/EDGE I get an error saying "Video Element Error: MEDIA_ERR_RC_NOT_SUPPORTED" (playing in dashif.org).

Changing the audioSamplingRate key to any other value fixes the issue and the video is playing on IE/EDGE.

All files in our library are transcoded the same way... What can cause this value to be 0?

[erankor]

The sampling rate is coming from the mp4 stsd atom, it's probably not set correctly there.
Can you share a sample file?

[idanya]

sample

[erankor]

Try this pull #890

[idanya]

Seems to set the audioSamplingRate correctly. it's now audioSamplingRate="96000"
But video still not playing in EDGE browser. same error.
weird, because when I changed it manually to the same value it worked...

[idanya]

Now that I've checked, HLS of the same video is also not working on EDGE.

[erankor]

From a short google on this - https://docs.microsoft.com/en-us/windows/desktop/medfound/aac-decoder
"Sampling rates above 48 kHz are not supported."
So, assuming Edge uses Media Foundation for decoding, this is not supposed to work.

[idanya]

Great find! Thanks!
I'll try transcoding it with 48 kHz

[jessp01]

Hi @idanya - can this be closed? Thanks.