View Full Version : Edirol R-44 and timecode


Dean Sensui
April 21st, 2009, 02:30 AM
I just got the Edirol R-44 this evening and am getting to know it a bit.

For those who might have been wondering if the Edirol R-44 can embed time-of-day timecode and be able to read it in Final Cut Pro, the answer is: Yes!

I recorded a 4-track test in the BWF format. The result was four .wav files on the SD card. I drag/dropped them into Final Cut Pro and double-tapped it. The file appeared in the viewer along with the time-of-day timecode embedded.

This is an important feature for me. I want to be able to record audio separately from video. The EX1 records only two channels and quite often I need to put four people on discrete tracks. This would allow me to lav four people on discrete tracks, and have two more tracks with my on-camera mics.

The camera give me time-of-day timecode. It's then a simple matter of finding the matching codes to locate the associated audio tracks.

The only thing I have to figure out is how to drop all four individual WAV files into a sequence without having to drag/drop each one so they all line up properly. Would be nice to be able to get them to align themselves.

Dean Sensui
April 21st, 2009, 02:41 AM
More experimentation: To make a 4-track clip out of four individual clips, highlight all clips in the bin, then go to Modify --> Merge Clips. Select the "timecode" option and it creates a four-track clip that can be dropped into a sequence.

David Morgan
August 7th, 2009, 04:23 PM
Dean,
what do u know about the following:

Clock drift. I record a lot of 2 hr theatre shows. Does it drift out of sync?

Word clock: Is the word clock jack an input, output or can be either?
thx
dm

Dean Sensui
August 7th, 2009, 05:30 PM
Hi David...

I haven't tested for drift but should.

When I do I'll post the results here.

Bill Warshaw
August 12th, 2009, 05:08 PM
The Tascam HD-P2 takes composite video in to sync with a camera - no drift.

/BILLW

Nicole Hankerson
November 25th, 2009, 06:49 PM
@Dean

How does the day of time and day of time in the camera stay together for the Edirol. Like what are your steps on making sure it matches up. Say using a HVX200. Cause the R-44 has no TC on it.

Dean Sensui
November 25th, 2009, 10:24 PM
Nicole...

The TOD TC free-runs in both devices and can drift independently from one another over the course of a day. It's not a perfect solution. It's a good idea to back it with a "slate" every so often.

However what it does provide is a quick and easy way to correlate video and audio media. In my case it's a few very large audio clips and a few hundred video clips. SequenceLiner will match up audio and video to within a few seconds. And I'll mass-sync a large number of clips by dragging them en masse, using the waveform as a sync reference.

Here's a sample of coverage that was shot with this system.

Hi Ho Silvers, Part 1 (http://hawaiigoesfishing.com/shelter2009_silver1.html)
Black cod at Anchor Point Lodge, part 1. (http://hawaiigoesfishing.com/205anchor1.html)

Phivo Christodoulou
November 25th, 2009, 10:24 PM
I can tell you that I did a 30 minute recording test with the following devices and they did not go out of sync, not by even a single frame.

Fostex FR2-LE
Zoom H4N
Sony Z1
Sony Z5
Canon 5D Mark II

I doubt very much that the Roland will go out of sync.

Frank Simpson
November 28th, 2009, 09:32 PM
I use an Edirol R-4 and three Canon GL-2 cameras. I use a slate for syncing and have done single shots up to an hour long with ZERO sync drift. I am extremely happy with this set up!

Chris Sweet
December 7th, 2009, 03:13 PM
oops.. didnt see this thread
http://www.dvinfo.net/forum/all-things-audio/469076-edirol-r44-timecode.html

Steve House
December 7th, 2009, 05:51 PM
When you guys claim these inexpensive consumer grade recorders maintain dead sync with various cameras, all sorts of alarm bells go off. Many network QC departments require zero tolerance off of dead sync for sound to lead picture and a maximum of 1/4 frame from off of dead sync for sound lagging picture over the duration of the entire program. To obtain that level of sync lock between multiple cameras and sound recorders requires all the devices to be slaved to a common timebase signal. Broadcast studios go to elaborate and expensive lengths to provide stable house clock to the devices in the studio, even to the point of correcting for the propagation delay in the cables. Location shoots where untethered operation is important put tuned and synchronized Lockit boxes on every camera and recorder and at a kilobuck each that's not a trivial cost. I'm sorry, but I just can't believe that a recorder costing half the price of a Lockit and a camera costing the same as one will have sufficiently stable timebases to deliver the sync performance claimed. Why would any dollar conscious producer put a $1000 Lockit on a camera and sync it with a $2500 SD 702T if he could get the same result recording sound without the Lockit by simply using a $400 Zoom recorder instead? Sorry guys, it just makes no sense. No offense, but your testing process must be faulty.

Jon Fairhurst
December 7th, 2009, 06:05 PM
Steve, you're right. If you're not sync'd to color black (or some other signal), you're not sync'd.

It's absolutely possible that a given test would sync up great when unlocked. Try the test again in Death Valley and then on Mt. Whitney and the results will probably be... different.

Dean Sensui
December 7th, 2009, 07:45 PM
For my own work my first concern is correlating audio with video shot during the day. As long as it's within a reasonable vicinity it's a huge help to keep it all organized.

Between starting and stopping the camera, and changing batteries on the recorder and the camera, wild sync is bound to shift. And for me it does, but I work with what I got.

For precision sync, my shots need to be in sync only for a few seconds. Maybe 15 or 30 seconds at the most as almost everything is shot in short bursts. I'll listen for phase shifting to quickly see if clips are out of sync after the first of a group of clips are lined up en masse.

Otherwise I'm using a simple slate at the beginning of a multi-cam shoot to make sure everything is in sync. It's more tedious that way but it's affordable and accurate.

Zack Allen
December 9th, 2009, 01:50 AM
I've tried locking an R4-Pro to my 702T a few times only to see the R4 drift rather quickly once pulling the TC link off and let it free run. The crystals in these lower end devices are not reliable I've found.

Phivo Christodoulou
December 9th, 2009, 04:14 AM
Dean I would like to record audio separately from now on also. I think it will make all productions more professional.

I have just been given a loan R-44 from Factory Sound to test. I will buy it if it does the following (and i am pretty sure it will):

I wish to record four channels of audio on the R-44 Pro and then use the "Timecode Out" connection to send out a timecode signal to a cheap wireless transmitter and then receive the signal on using a receiver plugged into my camera (left or right channel).

I would then be able to "sync to timecode" on my editing software. All the footage would automatically sync up to the four channels of audio.

In simpler terms, I would be able to record four channels of audio instead of two in the camera, and the quality is much higher, and I would no longer have to waste time syncing up audio to the video.

Steve House
December 9th, 2009, 04:24 AM
I would then be able to "sync to timecode" on my editing software. All the footage would automatically sync up to the four channels of audio. Make sure your NLE reads timecode from an audio track. Not all do.

Dean Sensui
December 9th, 2009, 04:46 AM
Phivo...

From your description you seem to be saying that you'll take timecode from the R-44, and send it to your camera via a wireless connection?

The R-44 has a Control-Sync jack, but it's to link two R-44s to create an 8-track recording system. I don't think it can feed sync data to a camera. And it's doubtful a camera will slave to an audio recorder.

Here's what I do: get the camera and recorder to the same "time of day" at the start of the day. Then use that embedded data in post to line up the continuous audio tracks with the individual video clips.

A couple of caveats: It's impossible to get both recorder and camera to get perfect time-of-day sync. So clips have to be nudged into perfect sync in post. The BWF files created by the R-44 are stamped with timecode at the start of the file, and the rest of the file's timecode is based on assumptions of sample rate and duration. There's always the risk of drift. But I always check and make corrections as needed.

Generally speaking, it all works. But it does require manually attaining audio/video sync.

I like the R-44. It's compact. Seems solidly built. It's easy to operate in the field. The audio quality is just great for what I do, even when recording voiceovers in a studio environment.

Phivo Christodoulou
December 9th, 2009, 05:38 AM
Thanks for your reply Dean. Yes that is what I intended to do and yes in an ideal world what i hope it does would be fantastic. The rep at Roland believes I will be able to achieve these results, but they lent it to me so that I can check and make sure.

I use Edius and i was told that it would do this. From the research I have done a number of people told me that sending timecode to an audio channel is common and doable.

I should know within the next couple of days when i finally get an opportunity to test it.

If it does not work the way i intend, then Dean i guess i would have to fall back on your suggestion - it sounds like the next best thing.

Fingers crossed!

Phivo Christodoulou
December 9th, 2009, 07:44 AM
correction... my mistake. Sorry guys i have gotten the models mixed up. I am referring to the R-4 Pro, not the R44. The R-4 Pro does timecode sync. My bad.

Dean Sensui
December 9th, 2009, 08:21 PM
As Gilda Radner used to say as Rosanne Rosannadanna, "Oops. Never mind!"

Phivo Christodoulou
December 9th, 2009, 08:55 PM
Yep sorry. Too many similar model numbers it gets confusing.

Dean have you considered going up to the R-4 Pro? I know it's a couple of grand more and I guess it's up to every individual to weigh up the time you save in syncing is worth the money over time.

It only recently occurred to me that that video producers (myself included) are happy to part with large amounts of money every 1-2 years for cameras, yet will not spend less than half that amount once off for audio equipment that will last at least 10 years.

It's an interesting topic.

Adam Gold
December 10th, 2009, 12:45 AM
As Gilda Radner used to say as Rosanne Rosannadanna, "Oops. Never mind!"Um, that would be Emily Litella. Roseanne Roseannadanna used to say, "It's always something."

Robert Gordon
February 27th, 2010, 08:42 AM
I have an R4 Pro and an HD-P2 (my backup recorder). Sometimes I sync the Tascam's TC-in to the Edirol's TC-out to give me six tracks when we're using two booms plus three or four body mics. Or I use it to create the guide track mix from the Edirol's stereo line outs. Needless to say, I'm considering shelling out for an eight or ten-track (Deva or Fusion, the Fostex - or has anyone checked out the new Tascam HS-P82? - it seems like a great deal, but of the course the pre-amps are always the biggest question mark with "great deals").

D.R. Gates
April 4th, 2011, 07:22 AM
When you guys claim these inexpensive consumer grade recorders maintain dead sync with various cameras, all sorts of alarm bells go off.

What about this lav recorder?

Zaxcom ZFR200 Miniature Digital Audio Recorder :: Professional Recorders :: Recorders :: Coffey Sound (http://www.coffeysound.com/Zaxcom-ZFR200-Miniature-Digital-Audio-Recorder.html)

Steve House
April 5th, 2011, 03:17 AM
What about this lav recorder?

Zaxcom ZFR200 Miniature Digital Audio Recorder :: Professional Recorders :: Recorders :: Coffey Sound (http://www.coffeysound.com/Zaxcom-ZFR200-Miniature-Digital-Audio-Recorder.html)

I don't have any direct experience with that recorder but knowing Zaxcom I would expect it to have accurate and stable clocks and hold sync far tighter than any of the Zooms or other 'pocket recorders'. The only way one can be sure of maintaining sync for shots running longer than 5 or 10 minutes is to drive both the camera and audio recorder sample clocks from a common timebase.