Rendered mix tempo fast?

[Zargon the Destroyer]

Hello!

Help me out here please, as this is making my eyes sweat.

I export some rough mixes at 48/24 (same as project) to send to a collaborator.

He imports them into Reaper and says they are now slightly fast (say 105bpm instead of 95bpm).

I can't work out what has happened. My renders line up perfectly in the original projects (as you would expect).

What do you reckon has happened?

[norbury brook]

Originally Posted by Zargon the Destroyer

Hello!

Help me out here please, as this is making my eyes sweat.

I export some rough mixes at 48/24 (same as project) to send to a collaborator.

He imports them into Reaper and says they are now slightly fast (say 105bpm instead of 95bpm).

I can't work out what has happened. My renders line up perfectly in the original projects (as you would expect).

What do you reckon has happened?

he's using 44.1k?

M

[Zargon the Destroyer]

Originally Posted by norbury brook

he's using 44.1k?

M

Wouldn't that slow it down though? My brain is so slow today!

[domzy]

i don't think the sample rate is likely to be the issue if you are both using Reaper (due to it's resampling capabilities) unless there's been some sort of hardware mix up, resulting in an incorrect file header or something.
I assume you have checked that you are both using the same project tempo and that the files are set to a playrate of 1.0, and also the master playrate?

[Zargon the Destroyer]

Originally Posted by domzy

i don't think the sample rate is likely to be the issue if you are both using Reaper (due to it's resampling capabilities) unless there's been some sort of hardware mix up, resulting in an incorrect file header or something.
I assume you have checked that you are both using the same project tempo and that the files are set to a playrate of 1.0, and also the master playrate?

Would project tempo make any difference? I thought importing a Wav is importing a wav; I didn't think there was any processing done ref tempo, unless you choose to do that?

I dunno.

I sent over mini projects instead and those worked as expected.

The chap is not somebody I've worked with before, so I don't want to start grilling him about his Reaper settings!

I thought maybe there was a common 'schoolboy error' type thing that might bring about this behaviour.

The difference between the correct and incorrect speed (about 10%) does seem to correlate with the difference between 44 and 48khz though...

[norbury brook]

Originally Posted by Zargon the Destroyer

Would project tempo make any difference? I thought importing a Wav is importing a wav; I didn't think there was any processing done ref tempo, unless you choose to do that?

I dunno.

I sent over mini projects instead and those worked as expected.

The chap is not somebody I've worked with before, so I don't want to start grilling him about his Reaper settings!

I thought maybe there was a common 'schoolboy error' type thing that might bring about this behaviour.

The difference between the correct and incorrect speed (about 10%) does seem to correlate with the difference between 44 and 48khz though...

I'm in the studio today with no clients send it to me if yo want me to check for you.

PM me and Ill give you my email address.

M

[Zargon the Destroyer]

Originally Posted by norbury brook

I'm in the studio today with no clients send it to me if yo want me to check for you.

PM me and Ill give you my email address.

M

That's very kind thanks! I don't think I'll pursue this further unless it happens again. Hopefully it never will!