Upsampling 44.1 to 48 for video?

[bdunard]

I have a project that has been recorded in 24 bit 44.1 in Sonar 4. I intend to take the tracks and dump them all into Samplitude for overdubs. Once that is finished the client will use the recordings for a video shoot for an electronic press kit. However, when the video is mixed down the editor told me that he needs a 48K sample frequency instead of 44.1.

My question is can I just upsample the individual finished stereo files from 44.1 to 48K and be alright if the client lip-synced to the 44.1?

Or...

Should I continue to overdub in 44.1 and then upsample to 48K for the tracks at the video shoot? This would probably require me to use a laptop for playback at the video shoot which is no big deal instead of a CD.

I will point out that I saw some software from voxengo that did some sort of upsampling that is free.

I have never upsampled anything so it is new to me... so if you have suggestions on it please let me know.



Thanks!

[PlugHead]

I think Chicken software has a SRC - not sure if it's free. A lot of pros use Barbabatch - but it costs...

Are you doing the mixdown, or they? What are they using - FCP/Avid? If it's video, they can take 44.1, but if they said they want 48k, guess that's what you do.

best with it!

[kosi]

It should be okay, to convert later. I'd
continue working in 44.1 and finish it as planned. Then convert the final Mix via any software. If it shouldn't be lipsync, do a hardware playout DA44.1 and AD48 on another workstation or a DAT.
I do upsamping all the time (software conversion via Pro Tools) and never had any sync problems.

kosi

[Darius van H]

I'd do the SRC before you do any final limiting.

[Brad Blackwood]

If it's only to be used as a guide track at the video shoot and not actually the production audio, stick with 44.1...

[bdunard]

Originally posted by Brad Blackwood
If it's only to be used as a guide track at the video shoot and not actually the production audio, stick with 44.1...

it will actually be for both the video sync and the video mix but we may do some extra overdubbing after the video shoot (strings, percussion, etc.) because of a time crunch so it will be about 95% at the video shoot. The editor is using final cut pro, so I don't know if that matters. I was just curious if there would be any "drifting" or sync issues if I upsampled to 48K after the video shoot?

[Mike Tholen]

Anytime I do stuff for Film/Video I'm clocking at 48k.
You will need to deliver at 48k even if it's just a guide for the shoot...no need to confuse anyone at the set.
Their standard for digital audio is 48k, you need to give them what they normally use...no excuses.

[bdunard]

that would be nice but the fact that it has basic tracks in 44.1 is the catch. They just need audio the day of the shoot (2 xlrs = L&R) It's just the mix that he said he needs 48K so that's what I plan to do.