Results 1 to 8 of 8

Thread: Syncing audio from digital recorder.

  1. #1

    Default Syncing audio from digital recorder.

    Can anyone tell me if this would be realistic?

    I have a very basic camera (Flip HD), that I am trying to use to capture elaborate pranks and social experiments. However, I need to place the camera at a distance, but I still need to capture what people are saying.

    I was thinking of taking a digital voice recorder and putting it in a shirt pocket, then syncing the audio to the video in the mixing stage.

    Does anyone know any tips or tricks to make this process a little less tedious?

    Thanks

    -Marcus

  2. #2
    Join Date
    Feb 2006
    Location
    Surrey, UK
    Posts
    10,847
    Blog Entries
    1

    Default

    The usual way is to record a short sharp sound. This is one of the functions of a clapperboard, but a crisp hand-clap will do. This will give you a spike on the timeline for the audio of both clips. Simply align the one from the digital recrder with the one from the camera.
    If it's a really long way - such that the Flip cannot pick up the sound of the handclap, make it very visual as well.
    Tim

  3. #3

    Thumbs up

    Thanks for the help Tim. That makes perfect sense... that way I can just sync the individual sound and the whole video will be in time.

  4. #4
    Join Date
    Feb 2006
    Location
    Surrey, UK
    Posts
    10,847
    Blog Entries
    1

    Default

    Another tip. If you're recording one long take (ie 30 minutes or more) try to insert a sharp noise every few minutes in case of any drift.
    Tim

  5. #5
    Join Date
    Mar 2005
    Posts
    4,192
    Blog Entries
    2

    Default

    Like in a classical concert, especially soft romantic ones. Have a word with the percussionist and see if he can, at the end of particularly soft sections, stand up and give a couple of cymbals a really good crash. That way you see the cymbals (like a clapper board) and you get a spike on the audio.

    Sorry Tim, bit of a Viz moment there.

  6. #6
    Join Date
    Feb 2006
    Location
    Surrey, UK
    Posts
    10,847
    Blog Entries
    1

    Default

    Quote Originally Posted by The Gaffer View Post
    Have a word with the percussionist ...stand up and give a couple of cymbals a really good crash.
    Genuine laugh out loud moment, Gaffer
    Tim

  7. #7

    Default

    aaaa so drift can occur, i have been worried about this.

    is it common ? and easy to correct ?

  8. #8
    Join Date
    Mar 2005
    Posts
    4,192
    Blog Entries
    2

    Default

    It does happen but is quite rare on short sequences. Current digital technology is almost painfully accurate and at the end of a half hour sequence you'd be really unlucky if you were more than a couple of frames out.

    It depends on the recorder. A halfway decent digital recorder such as a Zoom, Marantz or Edirol will have virually no drift. Some Mini-disc systems did tend to move off sync and we had guys on this forum who had to correct every minute, others who got a whole hour show in sync.

    It's very easy to correct the sound-sync in post.

Similar Threads

  1. Pinnacle 12 - Audio Syncing/Lagging Problems
    By Ataris in forum Pinnacle Studio, Edition including Avid Xpress and Liquid
    Replies: 3
    Last Post: 03-07-2010, 08:32 PM
  2. Syncing audio without crossfades: overlapping?
    By sirdemon in forum Sony Vegas video editing apps
    Replies: 6
    Last Post: 10-22-2009, 09:49 AM
  3. Syncing audio to video
    By lokkydesigns in forum Adobe Premiere, Premiere Elements, and After Effects
    Replies: 3
    Last Post: 01-17-2009, 12:35 AM
  4. Syncing audio & multi cam
    By simonwilliams in forum Adobe Premiere, Premiere Elements, and After Effects
    Replies: 0
    Last Post: 09-16-2007, 10:32 PM
  5. Two Camcorders / Same Event / Syncing Audio / Easy Way?
    By seize in forum Pinnacle Studio, Edition including Avid Xpress and Liquid
    Replies: 1
    Last Post: 06-02-2006, 08:31 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •