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Changing footage interpretation

From: Premiere Pro CS4 Beyond the Basics

Video: Changing footage interpretation

Premiere usually does a great job of interpreting footage. Oftentimes you bring stuff in, you don't really have to worry about the pixel aspect ratios much and things like that, because Premiere just guesses and understands and it kind of helps your footage work together. But sometimes on rare occasion things don't quite work out right and that could be and usually is because there is wrong information embedded in the file and that's exactly what's taken place here. If you look at my sequence here, our sequence is 720x480, 0.9 pixel aspect ratio and if you look at our footage, it's the same thing, 720x480, 0.9 and so it should look normal.

Changing footage interpretation

Premiere usually does a great job of interpreting footage. Oftentimes you bring stuff in, you don't really have to worry about the pixel aspect ratios much and things like that, because Premiere just guesses and understands and it kind of helps your footage work together. But sometimes on rare occasion things don't quite work out right and that could be and usually is because there is wrong information embedded in the file and that's exactly what's taken place here. If you look at my sequence here, our sequence is 720x480, 0.9 pixel aspect ratio and if you look at our footage, it's the same thing, 720x480, 0.9 and so it should look normal.

But unfortunately, I am like 10,000 times fatter than this, so what we need to do is fix the pixel aspect ratio and make this look correctly. I have to force the interpretation by changing it, by right-clicking on the footage and we'll go to Interpret Footage. With Interpret Footage and then under Pixel Aspect Ratio, we'll change Use Pixel Aspect Ratio from the File, which is incorrect. We'll conform this to, and then we've a whole host of pixel aspect ratios to choose from. It actually should have been Widescreen 1.2. So I'm going to go ahead and choose that, click OK and that looks a little bit more realistic unfortunately.

So that's me there and also as well, if there are some problems, I think that's being interpreted correctly here, but if I right-click and go back to Interpret Footage, if you're having issues from fields, in other words, you're getting like artifacting, like stair stepping. It's not looking right. You can select Conform to, and you could have it be Progressive or interlaced with Upper Field First or interlaced with the Lower Field First. And then actually most of time when I have Interpret Footage issues with Premiere, it's usually this.

Usually I need to take the fields and convert it to Progressive Scan. And although we're not looking at an example of this in this case, you could also change the Frame Rate here and you could also adjust the Alpha Channel. You could have it ignore the Alpha Channel or you could have it invert it. So whatever areas are transparent are opaque and vice-versa. Now, I should also point out that once we change it here in the Project panel, it automatically updated the clip that was being used in the sequence. So that is how to reinterpret footage.

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This video is part of

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Premiere Pro CS4 Beyond the Basics

82 video lessons · 20002 viewers

Chad Perkins
Author

 
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  1. 4m 11s
    1. Welcome
      56s
    2. What's new in the dot release
      57s
    3. Using the exercise files
      2m 18s
  2. 18m 54s
    1. Capturing ambient audio
      3m 12s
    2. Getting plenty of coverage
      1m 48s
    3. Telling a story with camera angles
      3m 18s
    4. The 180 degree rule
      2m 13s
    5. Framing shots
      3m 25s
    6. Allowing "emotional space"
      1m 40s
    7. Overcranking and time lapse
      3m 18s
  3. 11m 38s
    1. Why is metadata important?
      1m 40s
    2. Browsing and adding metadata
      6m 4s
    3. Creating metadata with Speech Search
      3m 54s
  4. 33m 12s
    1. When to cut
      7m 38s
    2. Avoiding bad edits
      9m 17s
    3. Using emotional cutaways
      1m 53s
    4. Fixing problems with cutaways
      3m 53s
    5. Pacing edits
      3m 49s
    6. Matching action
      4m 14s
    7. The power of suggestive editing
      2m 28s
  5. 26m 31s
    1. Contrasting targeting and selecting
      3m 17s
    2. Copying and pasting clips
      2m 36s
    3. Replacing clips
      4m 8s
    4. Editing to music
      5m 0s
    5. Using sample rate for precise editing
      5m 34s
    6. Creating J and L cuts
      3m 33s
    7. Working with subclips
      2m 23s
  6. 11m 17s
    1. Ingesting media
      1m 39s
    2. Examining P2 file structure
      1m 31s
    3. Importing P2 files with the Media Browser
      5m 15s
    4. Converting DVCPRO HD to standard 720p
      2m 52s
  7. 38m 11s
    1. Using the Reference Monitor
      3m 0s
    2. Using scopes
      8m 33s
    3. Primary color correction
      10m 11s
    4. Secondary color correction
      8m 28s
    5. Creating a vignette
      2m 28s
    6. Creating a day-for-night shot
      5m 31s
  8. 37m 19s
    1. Censoring video
      5m 30s
    2. Creating a waving flag
      6m 5s
    3. Creating a lens flare
      3m 36s
    4. Creating background textures
      6m 19s
    5. Playing with time
      6m 4s
    6. Using transition effects
      6m 13s
    7. Working with presets
      3m 32s
  9. 15m 30s
    1. Creating a garbage matte
      3m 56s
    2. Removing green screen
      5m 6s
    3. Compositing with blend modes
      3m 32s
    4. Nesting sequences
      2m 56s
  10. 15m 27s
    1. Creating 3D reflections
      5m 0s
    2. Creating growing vines
      5m 52s
    3. Creating a track matte
      2m 39s
    4. Using the History panel
      1m 56s
  11. 42m 25s
    1. Censoring audio using bleeps
      5m 16s
    2. Understanding sample rate
      3m 0s
    3. Normalizing audio across multiple clips
      5m 7s
    4. Recording audio
      2m 24s
    5. Removing audio problems with Soundbooth
      5m 43s
    6. Working with VST plug-in effects
      2m 3s
    7. Mixing audio
      8m 20s
    8. Changing volume over time
      5m 22s
    9. Working with surround sound
      5m 10s
  12. 23m 52s
    1. About this project
      2m 26s
    2. Performing preliminary edits
      2m 35s
    3. Working with multi-camera footage
      7m 27s
    4. Creating a visual "stutter"
      3m 12s
    5. Adjusting color
      8m 12s
  13. 6m 28s
    1. Transferring projects to another machine
      3m 24s
    2. Removing unused footage
      3m 4s
  14. 25m 46s
    1. Choosing a format
      5m 35s
    2. Understanding spatial compression
      2m 5s
    3. Understanding temporal compression
      4m 19s
    4. About HD standards
      5m 46s
    5. Changing footage interpretation
      2m 17s
    6. Getting the film look
      5m 44s
  15. 27m 10s
    1. Working with After Effects
      5m 56s
    2. Creating titles in After Effects
      5m 39s
    3. Working with Photoshop files
      2m 29s
    4. Working with Final Cut Pro
      2m 2s
    5. Working with OnLocation
      3m 12s
    6. Working with Encore
      4m 27s
    7. Introducing Adobe Story for pre-production
      3m 25s
  16. 15s
    1. Goodbye
      15s

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