I recorded a video in a web application (https://app.imma.video) with my iPhone 14 Pro in a mobile browser (Chrome and Vivaldi) but my audio is not recorded.

The web application uses Uppy Dashboard for recording the video.

I also checked the video file with ffprobe -> no audio stream.

When I do the same in Safari or mobile Opera browser, it records video and audio as expected.

Any idea what could cause this issue?