I don’t know why Cubase doesn’t support it (WaveLab doesn’t either, although that’s changing with 8.5 I hear.)
But when uploading to YouTube, this is my workflow:
- Render music out to WAV at 44.1kHz, 24-bit.
- Import WAV into my video editor (Sony Movie Studio or Camtasia) and edit the video.
- Render the video as MP4 with AAC audio.
- Upload to YouTube. (Here’s an example.) The audio in that clip was actually rendered out during an earlier Cubase session from the one shown in the video. I just imported the pre-existing WAV and synced it to the video.
So it doesn’t matter (for me) that Cubase doesn’t do AAC; I rely on my video editor for that.
I upload 44.1kHz (and sometimes 48kHz) 24-bit WAV files to SoundCloud only for things like hardware or softsynth shootouts where people might want to be able to download the original recordings for hi-fi listening.
For just songs or whatever, I prefer uploading to SoundCloud as MP3, so folks can download it to their iPods.
My workflow there might be a little… uh different; I don’t know what most other SoundClouders do.
- I render out from Cubase as WAV (again, 44.1/24).
- Open it in WaveLab for loudness normalization.
- Use the LAME encoder to generate an MP3 file with “-V1 -h” (high quality VBR).
- Open the MP3 in iTunes, touch up all the ID3 tags, and add artwork.
- Upload to SoundCloud. (Here’s the SoundCloud version of my earlier example.)