Offset frames?

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I got my tentacle this week and went on to experiment the device with a 7d and my 633.

So, injected TC from 633, checked in 633’s Jam menu and no difference.

BUT, when i synced the two files in the tentacle sync software i saw 2 frames offset between them.

(attached pic)

What am i doing wrong?


Good! Looking forward to hear from you…


Hi Ulrich,

Thank you for your quick reply,

In that case i tend to put the blame on the 7D, I’ll check with other cameras as soon as i have the chance.

Best regards,



Hi Ronan,
this behavior can have two reasons:

1. You can not rely on the time accuracy of your recorder display. It is not unusual that displays and graphic processing routines introduce a delay.

2. Canon DSLR Cameras are known to have a shift of 1-2 frames between audio and video. If your camera does this, then the resulting Timecode will be also 1-2 frames off because it was recorded on the audio track of your camera. To compensate this there are several ways to do this in the Tentacle Sync Software. Just look out for the Offset parameter of the “Read Audio Timecode Function” or the “Set Audio/Video Shift” Function in the Context Menu.