sample rate question...

[bodenzord]

So...to start...this is my first time posting on this message board. But, I've been lurking and gaining a lot of education from it for the past several months now. This place rocks!!!!

Anyway, I have a potential gig in the near future which will be a video shoot that I will be hired to multitrack the band. The final product will be a DVD release. Now where I'm stuck at is how to incorporate my Tascam MX2424 into the equation with regards to video sync, time code, and the proper sample rate. But before I dive into that, I think you should all know that I work professionally in the Post Production World of audio for Film and Television. In fact, I am currently working at Blu Wave Audio at Universal Studios. Okay...enough of that. Here's how I see working out the situation:

Basically, I know that the camera's will be running at 59.94Hz with either Non-drop or Drop Frame time code generated by some box at a rate of 29.97fps. Obviously, I well take a split of the time code from a DA, regen it via a Distripalizer, and feed that into my recorder. Also, I will assume there will be a house video sync generator that I will grab as well.

Now where my confusion lies is what sample rate should I choose? Isn't it a standard in the music world to record audio at 44.1kHz @ 30fps time code? If so, then that would mean I'd need to do a pull down of my sample rate. In essence, with my recorder referenced to 29.97fps time code at a video rate of 59.94 Hz, my sample rate should be pulled down to 44.056kHz. That would still maintain the "standard" in the music world of 44.1kHz @ 30fps time code.

Well? Is this what other people are doing in these types of situations or are you leaving it at 44.1kHz with 29.97fps time code?

This is all I'm going to ask for now. I do have other questions, but I'll save those for another thread.

Thanks in advance.

Mike

[fifthcircle]

I don't have an MX 2424 right here in front of me, but my recollection is if you reference the sample rate to the video burst and time code it will correct itself for you... (it is a great location box because of this...)

When I work with a project that is shot on 35 mm film, I've usually done 30 NDF.

The sample rate for all projects I've dealt with that end up in Film or Video have always been 48K. For the CD, we sample rate convert. When time code is involved, we pull down as necessary...

--Ben

[Remoteness]

I agree with Ben.

10 out of 10 film / video shoots we've been on were (audio) recorded at a sampling rate of 48K. Convert if applicable.

[bodenzord]

Okay...I just realized that since this project is going to DVD, it should be recorded at 48K because that's the sample rate of a DVD. That would then eliminate the need to do a sample rate conversion.

However, this still doesn't answer the question of whether I need to do a pull down or not. My educated guess says no because the DVD is not pulled down.

[Remoteness]

I believe you are correct sir.

[jwh1192]

i get alot of work with a DVD authoring company and most things we shoot for them. directors commentarys, interviews, any additional material is shot at 29.97 non.drop, and audio is either 16bit 48k or 24bit 48k. if it is 24 bit i believe that it will end up 16 bit when encoded to Dolby Digital or DTS ... you could bring a small sync / blackburst generator (Horita) with you if you have doubts that there will not be one.

did a remote once where the way the production was talking it was going to be an NMT high def truck and it ended up being 5 film guys with DV cameras and they are looking for timecode from us and sync, what is that? at that point we had timecode readers in the venue that they could shoot at the beginning and end of each tape load ...

happy remoting

john