YouTube processing problem

[Kurville]

I was able to successfully upload two videos with IAMF on YouTube two days ago. https://www.youtube.com/@daniel.courville

But it doesn't work anymore and I have no idea why... I get an error near the end of the YouTube processing. I tried uploading the video without audio: it works. I retried video+audio and lowering the audio bitrate to 128 kbps (my first two successful upload were at 256 kbps). It doesn't work.

Was something changed in the last two days with the FFmpeg merge video + audio script?

Edit: from other tests on YouTube, it looks like IAMF is not yet fully implemented on YouTube. YT will mixdown to 2-channel (stereo? binaural?) and once the video is processed, the original multichannel signal is not available, even on the video's author YouTube Studio page.

[rafalfaro18]

It might've been resolved. I was getting that last week. But somehow got magically fixed today and I was able to do a successful upload today. See a full ffprobe of the mp4 used for this test here. I have no idea if it's related to me recently getting youtube premium on the account used to upload it.

[rafalfaro18]

Was something changed in the last two days with the FFmpeg merge video + audio script?

Yes, the example ffmpeg scripts were updated.

[Kurville]

It might've been resolved.

No such luck on my side. Uploaded a video (with 3rd order ambisonics) done with the updated script and it's been processing for more than two hours now...