It's only an issue with that one program as it's the only one I have set up that way in Vegas.
As you suggested, I have been doing just that, rendering it out and then bringing it into RX9 but since the feature is suppose to be available in Vegas I thought I'd like to have it set up that way. Not a big issue but would be a convenience.

I didn't mean that one program, I meant a problem with Izotope not being able to decode that one mp4 file. I use RX 9 with VP 19 and 20 without issue.

RX9 works fine if I just render and drop the wav file into it and it's a great program. Its saved me quite a few times from annoying background sounds, etc.

I assume it's just an issue with this type of MP4 file then as I haven't seen this problem. Other MP4s work fine. (X-AVCS from a Sony here)

Feel free to share the MediaInfo to narrow down the issue. https://www.vegascreativesoftware.info/us/forum/faq-how-to-post-mediainfo-and-vegas-pro-file-properties--104561/

I've tried several types of files and none of them work when trying to access through V20 and all of them work when opening them directly in RX9 so I'm pretty sure any mediainfo wouldn't be of any help.

Work-a-round: set RX9 as the "Preferred Audio Editor" in "Options> Preferences> Audio" .. assuming VP-20 is like previous builds.

@Roger Bansemer

Did you try Open copy in the audio editor instead of trying to open the file directly?

Yes!! That works, the "open copy in audio editor". However, I did discover that an audio file will not open in RX9 if the clip has been shortened or split.

Work-a-round: set RX9 as the "Preferred Audio Editor" in "Options> Preferences> Audio" .. assuming VP-20 is like previous builds.

Work-a-round: set RX9 as the "Preferred Audio Editor" in "Options> Preferences> Audio" .. assuming VP-20 is like previous builds.

Thanks for your help everyone... Roger

In preferences/ general, is "close media files when not the active application" checked? If not, try checking it. Perhaps somehow Vegas is blocking RX9 from opening these files. Otherwise I am out of ideas for non-workarounds. I'll keep an eye out in case it happens here.

"close media files when not the active application"

+11

If you are not aware already,
"Open copy in audio editor" creates a new 'take' file in VP of just the event's audio to work on in audio editor app over the top of the original event. Multiple 'takes' can be toggled with the 'T' key in Vegas.
"Open in audio editor" opens the entire file in the audio editor (which can be 'destructive editing' permanently changing the original file when saved in the audio editor.

raud, Magix forums moderator

I use Vegas Pro 20 and Sound Forge 17; both "run as administrator." When I right click an audio track in Vegas to "open in audio editor" (Sound Forge), Sound Forge starts to open. I have to then minimize Vegas. SF opens and I work the audio. When finished, I save the file, close the file, and minimize SF. I then maximize Vegas, the files opens in Vegas and all is well. When I go to another audio track and repeat the process - the open SF instance is not recognized and the system opens another instance of SF. Then I have to close the first instance. Used to be in previous versions of Vegas and SF this did not occur - once SF was opened it was recognized and another instance was not opened. Is there a way to correct this minor annoyance? Thanks for any suggestions.

@Frederick-Dispensiere Please start a new thread with a new subject line as this doesn't have anything to do with RX9. I also suggest not running this software as an administrator.

@Roger Bansemer I use izotope RX10 with Vegas 21 via "openAudioEditor" script in the Happy Otter scripts ( @wwaag) and it works like a charm.

You can choose to let it save as a "Take" or a new track, but the take is most convenient.

And "close media files when not the active application" is checked.