Avatar for Username

Zoeken in Support

Vermijd ondersteuningsscams. We zullen u nooit vragen een telefoonnummer te bellen, er een sms naar te sturen of persoonlijke gegevens te delen. Meld verdachte activiteit met de optie ‘Misbruik melden’.

Meer info

Deze conversatie is gearchiveerd. Stel een nieuwe vraag als u hulp nodig hebt.

MediaRecorder does not resample Opus input audio

  • 3 antwoorden
  • 1 heeft dit probleem
  • 1 weergave
  • Laatste antwoord van raycarino

raycarino
raycarino
more options

I'm on firefox 59. My microphone records audio at a sample rate of 44.1khz. Per OpusTrackEncoder https://github.com/mozilla/gecko-dev/blob/a341b32d064bafac5422f72fef6afe740045105c/dom/media/encoder/OpusTrackEncoder.cpp#L162 and this bug https://bugzilla.mozilla.org/show_bug.cgi?id=922247, I would have expected a MediaRecorder to emit ogg-opus audio at 48khz, but it's still 44.1khz after inspecting the ogg header.

Am I wrong in undrestanding that MediaRecorder should resample to 48khz if the microphone's sample rate is non-standard?

I'm on firefox 59. My microphone records audio at a sample rate of 44.1khz. Per OpusTrackEncoder https://github.com/mozilla/gecko-dev/blob/a341b32d064bafac5422f72fef6afe740045105c/dom/media/encoder/OpusTrackEncoder.cpp#L162 and this bug https://bugzilla.mozilla.org/show_bug.cgi?id=922247, I would have expected a MediaRecorder to emit ogg-opus audio at 48khz, but it's still 44.1khz after inspecting the ogg header. Am I wrong in undrestanding that MediaRecorder should resample to 48khz if the microphone's sample rate is non-standard?

Alle antwoorden (3)

raycarino
raycarino Vraageigenaar
more options

Forgot to mention that I'm using the MediaRecorder like so: https://developer.mozilla.org/en-US/docs/Web/API/MediaRecorder#Example

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 25 Contributor
more options

This topic might be beyond the expertise of this forum. There is a developer mailing list for media-related topics that might be a good place to try next:

https://lists.mozilla.org/listinfo/dev-media

raycarino
raycarino Vraageigenaar
more options

Thank you jscher2000!