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Activity Forums Apple Final Cut Pro X Almost sync sound With Tentacle track E recorder

  • Almost sync sound With Tentacle track E recorder

    Posted by Mark Smith on November 30, 2022 at 12:26 pm

    I’ve been using some Tentacle track E recorders which work very well. The issue I am having is in post where even though I have synced timecode between the track E an a tentacle mounted on camera, in this case a Pocket 6 K pro. When I sync the audio file with the camera file using timecode the Track E recording is 30 ish subframes ahead of the camera audio and always needs to be brought into alignment. I don’t recall this happening when I first started using the track E’s . I do suppose I could sync the audio and camera files with waveform since I usually have at least one decent audio track on camera recording.

    Has anyone else had this issue, and what is the solution?

    Hypothetically, with a track E on a subject and an on board camera mic feeding sound to the camera there would be some measurable delay between the recorder on the subject and the camera recording if the distance between camera and subject was significant, but that is not what I am dealing with here.

    Ben Balser replied 1 year, 6 months ago 2 Members · 5 Replies
  • 5 Replies
  • Ben Balser

    November 30, 2022 at 3:09 pm

    Verify the sample rates being recorded on the TrackE and the cameras. 90% of the time for this symptom they won’t match. All audio sources used in video must be 48kHz sample rate.

  • Mark Smith

    November 30, 2022 at 10:33 pm

    Recording on a BMPC6K pro and Track E . 6K Pro is 48K sample, Track E is 48 K sample though 32 bit float vs 24 bit for 6K so the sample mismatch is not sampling rate just bits. I haven’t tried Track E at 24 bit, which could be an open avenue.

  • Ben Balser

    November 30, 2022 at 10:44 pm

    Bit-depth won’t matter at all, it’s all about sample rate. Video is recorded in frames, audio in samples. HHHmmm… And have you verified the timecode actually matching in both files? I assume there’s no weirdness like some “offset” setting somewhere in the E or camera. hhhmmm… odd…

  • Mark Smith

    December 1, 2022 at 2:46 am

    In resolve- fairlight – I count 7 subframes offset with the TrackE ahead of the camera audio . Timecode is the same .

  • Ben Balser

    December 1, 2022 at 3:25 am

    Well, I’m stumped…

    But I would recommend posting this issue on as that is a much more active FCP forum with some really knowledgable folks.

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