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Can anyone help shed some light on this: Editing a dialogue track for a video & ran into this curious issue. Delivered audio is an M-S track, so I do the following:

[1] take the M-S track & process it to a standard L/R track via direct recording to a new stereo audio track (not a bounce...just set it's output to the audio track's input & record in real time). In this case I used an MS Decoded & muted the sides and added gain to the mid.

[2]I pop into the Finder, copy the newly recorded track out of the Audio Files folder and do some cleaning in RX6. Save the cleaned file with a new name (append RX to it)

[3] Import the cleaned track into DP via drag & drop into the Soundbites sidebar.

Now, when I pull the newly imported & cleaned track into a new track it's longer by 3+ (it was like 3.26 or 3.62...I forget now) seconds. The extra time is all up front (at the head).

Has anyone experienced this before? Could this be because of the pre-record buffer? If so, is there a workaround that doesn't involve remembering to turn off/on the record buffer?

I hope to do some tests myself, but you know the drill...projects lining up & just cranking to stay on top of things. When I get some free time I'm going to try a full test including comparing to a bounce and a Freeze Tracks option as well as real time stem record with & without the record buffer. I was just hoping someone has some experience with this issue and can say definitively what it is that's causing the problem.

Thanks!

DP 8.07
macOS 10.12.6 (Sierra)

It could be the buffer. To be sure, set a different length for the pre-record buffer, and repeat your test. If it matches the new lenght, then it's very likely you found your culprit.

I always keep that thing off (0 lenght), and I've never seen this.

What kind of “cleaning” are you talking about? Noise reduction, in particular, has been responsible for altering file length- both in internal bounces from DP and stand alone apps. I don’t know why, it just is. You should be able to do a clean bounce from DP that matches but be careful that your start and end times match the original tracks exactly. Just hitting “select all”
Is not a precise way of setting those parameters.

I'm thinking, yes, the pre-record buffer.

MIDI Life Crisis wrote:What kind of “cleaning” are you talking about? Noise reduction, in particular, has been responsible for altering file length- both in internal bounces from DP and stand alone apps. I don’t know why, it just is. You should be able to do a clean bounce from DP that matches but be careful that your start and end times match the original tracks exactly. Just hitting “select all”
Is not a precise way of setting those parameters.

Nope, just checked. The pre-cleaned & cleaned are the exact same length. So it's happening during the recording. I haven't had time to try a bounce or freeze yet...hoping to get to that next week.

I'd be really shocked if RX6 was adding time to a file, considering how much it's used in serious audio post situations for TV & movies.

Could any of the tracks have a different SMPTE frame rate?

for those wondering - a bounce to disk yields the expected file length. So I'm nearly certain it's the pre-record buffer setting.

What I haven't done yet was to disable that & try the exact same thing to see if there's a file length difference. I also was wondering if I could get what I want (trim off the pre-record "hidden" stuff) if I freeze the track after doing the record process.

Just waiting for some breathing room to test things...probably not this month! And I'm not complaining...it's great to be this busy. I can test when I slow down over the summer.