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Understanding sync

From: Avid Media Composer 6 Essential Training

Video: Understanding sync

Trimming is a very powerful tool, but if you don't use it correctly, you can run into some trouble with audio and video sync. Let's take a look at what this means. So, I have a little bit more of a complex sequence. It's mostly interviews with Broll over it. And one thing about this Broll is that it's been positioned exactly over the part of the interview that it concerns. We obviously want to keep this video over the interviews. So, I'm going to go into my first edit. So, I'm going to enter a trim on this first transition.

Understanding sync

Trimming is a very powerful tool, but if you don't use it correctly, you can run into some trouble with audio and video sync. Let's take a look at what this means. So, I have a little bit more of a complex sequence. It's mostly interviews with Broll over it. And one thing about this Broll is that it's been positioned exactly over the part of the interview that it concerns. We obviously want to keep this video over the interviews. So, I'm going to go into my first edit. So, I'm going to enter a trim on this first transition.

I have my V1, A1, and A2 Track Selectors on, and so I'm just going to press U. And let's go ahead and play around this edit. I'll press spacebar. (Female speaker:--fined. One person follows, one person leads.) All right, so we have too much material on the A side. This is going to be an A-Side Single Roller Trim. I am going to press the P key to jump to the A side, and we want to remove frames, so I'm going to go one frame to the left using my comma. And I'm going to enable a waveform, so I can actually see the audio as I do this.

It looks like this is the offending audio, so we'll go ahead and trim to the left by one frame at a time, and I'll release there. It looks like we just got rid of thirty-two frames on the A side. Let's go ahead and play. (Female speaker: The roles are defined. One person follows, one person leads.) Well, we've fixed that problem, but wait a second. It looks like we created a couple more. We now have this gap that we didn't have before. And I'll go ahead and do this again so you can see everything that happened when I did this.

I'm going to press Undo, and I'm going to do that again. Keep your eye on V2 as I do this edit. So, I'm going to trim to the left. And when I release, notice that all of my video and audio on these three tracks moved, but nothing on V2 moved. That's going to create a problem right here and on down the line as well. Let's undo one more time, and we'll talk about how to do this correctly.

I want to trim my V2 track with these other three tracks so that everything will move simultaneously. So, what I'm going to do is I'm going to Shift+Click on this side of the edit, up here on V2, so it's included in that trim. I'll go ahead and trim over to the left by pressing my comma again. And I'll release. Everything stayed in sync. We don't have that gap anymore.

V2 moved at the same rate as every track below it, and we're in good shape. So, bottom line: as you're trimming, make sure not to forget all of your tracks that are involved in the trim. While it might not look like they're involved, they definitely are, because we have these points of sync that we need to maintain. So, make sure that you have the Shift+Clicking of our trim rollers as an available option as you go forward.

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This video is part of

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Avid Media Composer 6 Essential Training

87 video lessons · 14327 viewers

Ashley Kennedy
Author

 
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  1. 3m 55s
    1. Welcome
      1m 16s
    2. Using the exercise files
      2m 39s
  2. 22m 54s
    1. Touring the Select Project window
      4m 45s
    2. Exploring bins
      4m 23s
    3. Customizing user settings
      3m 36s
    4. Setting up and organizing a project
      5m 57s
    5. Saving and backing up the project
      4m 13s
  3. 57m 27s
    1. Touring the Composer Monitor and the Timeline
      2m 29s
    2. Touring the Edit interface
      5m 6s
    3. Splicing shots
      7m 43s
    4. Splicing non-linearly
      2m 43s
    5. Overwriting shots
      4m 35s
    6. Removing shots using Extract and Lift
      4m 38s
    7. Using Segment mode (Extract/Splice) to switch shots
      6m 37s
    8. Using Segment mode (Lift/Overwrite) to move shots
      6m 31s
    9. Using Extract/Splice and Lift/Overwrite together
      3m 32s
    10. Manipulating the Timeline directly
      4m 34s
    11. Creating subclips and subsequences
      3m 48s
    12. Adding multiple video and audio tracks
      5m 11s
  4. 23m 28s
    1. Understanding trimming
      3m 19s
    2. Performing single-roller trims
      5m 15s
    3. Performing dual-roller trims
      3m 54s
    4. Using Ripple Trim and Overwrite Trim
      5m 4s
    5. Understanding sync
      3m 17s
    6. Solving sync problems
      2m 39s
  5. 54m 26s
    1. Navigating with JKL
      3m 26s
    2. Using navigation shortcuts
      4m 47s
    3. Using the Command palette
      6m 4s
    4. Customizing the Timeline
      4m 54s
    5. Using bin layouts
      3m 49s
    6. Using workspaces
      6m 41s
    7. Sorting and sifting clips
      5m 57s
    8. Using the Find tool
      5m 13s
    9. Using markers
      5m 54s
    10. Using PhraseFind
      3m 21s
    11. Using ScriptSync
      4m 20s
  6. 20m 42s
    1. Trimming with JKL
      4m 53s
    2. Performing Slip edits
      6m 1s
    3. Performing Slide edits
      5m 39s
    4. Performing Replace edits
      4m 9s
  7. 27m 17s
    1. Reading audio levels and pan
      5m 42s
    2. Using the audio mixer
      10m 1s
    3. Keyframing audio
      7m 6s
    4. Recording audio adjustments on the fly
      4m 28s
  8. 55m 1s
    1. Using Quick Transition effects
      4m 6s
    2. Using the Transition Manipulation tool
      3m 12s
    3. Using the Effects palette and the Effect Editor
      6m 1s
    4. Keyframing segment effects
      5m 30s
    5. Nesting and auto-nesting
      5m 54s
    6. Saving effect templates
      3m 23s
    7. Building basic composites using vertical effects
      4m 7s
    8. Using the picture-in-picture (PIP) effect
      5m 14s
    9. Using the Color effect
      4m 24s
    10. Creating basic motion effects
      6m 55s
    11. Using Timewarp
      6m 15s
  9. 11m 48s
    1. Understanding system performance
      6m 13s
    2. Rendering intelligently
      5m 35s
  10. 26m 44s
    1. Analyzing footage for problems
      2m 27s
    2. Using the Y-Waveform monitor to set whites and blacks
      7m 16s
    3. Using the RGB Parade to correct color casts
      5m 50s
    4. Using the Vectorscope to improve skin tones
      5m 34s
    5. Using auto color correction
      5m 37s
  11. 30m 10s
    1. Formatting and enhancing text using Avid Marquee
      5m 32s
    2. Using Marquee to apply shapes and gradients
      5m 18s
    3. Using title templates
      3m 45s
    4. Bringing the title into Media Composer
      3m 54s
    5. Revising the title
      2m 17s
    6. Creating rolling and crawling titles
      5m 14s
    7. Using AutoTitler
      4m 10s
  12. 32m 37s
    1. Importing files
      6m 47s
    2. Linking to files using AMA
      3m 36s
    3. Linking to hi-res stills
      5m 59s
    4. Using the Avid Marketplace
      2m 50s
    5. Using the Capture tool
      5m 19s
    6. Capturing footage
      3m 41s
    7. Batch capturing
      4m 25s
  13. 12m 58s
    1. Deleting material from the bin
      5m 29s
    2. Understanding the Media tool
      4m 46s
    3. Deleting unreferenced clips
      2m 43s
  14. 17m 35s
    1. Preparing your sequence for output
      5m 44s
    2. Performing a digital cut
      5m 26s
    3. Exporting your sequence as a file
      6m 25s
  15. 19m 2s
    1. Solving offline media
      6m 48s
    2. Re-linking media
      3m 0s
    3. Resetting Avid settings
      5m 9s
    4. Using the Avid Attic
      4m 5s
  16. 44s
    1. Additional resources
      44s

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