Användarhandbok Avbryt

Converting movies

  1. After Effects User Guide
  2. Beta releases
    1. Beta Program Overview
    2. After Effects Beta Home
  3. Getting started
    1. Get started with After Effects
    2. What's new in After Effects 
    3. Release Notes | After Effects
    4. After Effects system requirements
    5. Keyboard shortcuts in After Effects
    6. Supported File formats | After Effects
    7. Hardware recommendations
    8. After Effects for Apple silicon
    9. Planning and setup
  4. Workspaces
    1. General user interface items
    2. Get to know After Effects interface
    3. Workflows
    4. Workspaces, panels, and viewers
  5. Projects and compositions
    1. Projects
    2. Composition basics
    3. Precomposing, nesting, and pre-rendering
    4. View detailed performance information with the Composition Profiler
    5. CINEMA 4D Composition Renderer
  6. Importing footage
    1. Preparing and importing still images
    2. Importing from After Effects and Adobe Premiere Pro
    3. Importing and interpreting video and audio
    4. Preparing and importing 3D image files
    5. Importing and interpreting footage items
    6. Working with footage items
    7. Detect edit points using Scene Edit Detection
    8. XMP metadata
  7. Text and Graphics
    1. Text
      1. Formatting characters and the Character panel
      2. Text effects
      3. Creating and editing text layers
      4. Formatting paragraphs and the Paragraph panel
      5. Extruding text and shape layers
      6. Animating text
      7. Examples and resources for text animation
      8. Live Text Templates
    2. Motion Graphics
      1. Work with Motion Graphics templates in After Effects
      2. Use expressions to create drop-down lists in Motion Graphics templates
      3. Work with Essential Properties to create Motion Graphics templates
      4. Replace images and videos in Motion Graphics templates and Essential Properties
      5. Animate faster and easier using the Properties panel
  8. Drawing, Painting, and Paths
    1. Overview of shape layers, paths, and vector graphics
    2. Paint tools: Brush, Clone Stamp, and Eraser
    3. Taper shape strokes
    4. Shape attributes, paint operations, and path operations for shape layers
    5. Use Offset Paths shape effect to alter shapes
    6. Creating shapes
    7. Create masks
    8. Remove objects from your videos with the Content-Aware Fill panel
    9. Roto Brush and Refine Matte
  9. Layers, Markers, and Camera
    1. Selecting and arranging layers
    2. Blending modes and layer styles
    3. 3D layers
    4. Layer properties
    5. Creating layers
    6. Managing layers
    7. Layer markers and composition markers
    8. Cameras, lights, and points of interest
  10. Animation, Keyframes, Motion Tracking, and Keying
    1. Animation
      1. Animation basics
      2. Animating with Puppet tools
      3. Managing and animating shape paths and masks
      4. Animating Sketch and Capture shapes using After Effects
      5. Assorted animation tools
      6. Work with Data-driven animation
    2. Keyframe
      1. Keyframe interpolation
      2. Setting, selecting, and deleting keyframes
      3. Editing, moving, and copying keyframes
    3. Motion tracking
      1. Tracking and stabilizing motion
      2. Face Tracking
      3. Mask Tracking
      4. Mask Reference
      5. Speed
      6. Time-stretching and time-remapping
      7. Timecode and time display units
    4. Keying
      1. Keying
      2. Keying effects
  11. Transparency and Compositing
    1. Compositing and transparency overview and resources
    2. Alpha channels and masks
    3. Track Mattes and Traveling Mattes
  12. Adjusting color
    1. Color basics
    2. Color management
    3. Color Correction effects
    4. OpenColorIO and ACES color management
  13. Effects and Animation Presets
    1. Effects and animation presets overview
    2. Effect list
    3. Effect Manager
    4. Simulation effects
    5. Stylize effects
    6. Audio effects
    7. Distort effects
    8. Perspective effects
    9. Channel effects
    10. Generate effects
    11. Time effects
    12. Transition effects
    13. The Rolling Shutter Repair effect
    14. Blur and Sharpen effects
    15. 3D Channel effects
    16. Utility effects
    17. Matte effects
    18. Noise and Grain effects
    19. Detail-preserving Upscale effect
    20. Obsolete effects
  14. Expressions and Automation
    1. Expressions
      1. Expression basics
      2. Understanding the expression language
      3. Using expression controls
      4. Syntax differences between the JavaScript and Legacy ExtendScript expression engines
      5. Editing expressions
      6. Expression errors
      7. Using the Expressions editor
      8. Use expressions to edit and access text properties
      9. Expression language reference
      10. Expression examples
    2. Automation
      1. Automation
      2. Scripts
  15. Immersive video, VR, and 3D
    1. Construct VR environments in After Effects
    2. Apply immersive video effects
    3. Compositing tools for VR/360 videos
    4. Advanced 3D Renderer
    5. Import and add 3D models to your composition
    6. Import 3D models from Creative Cloud Libraries
    7. Image-Based Lighting
    8. Extract and animate lights and cameras from 3D models
    9. Tracking 3D camera movement
    10. Cast and accept shadows
    11. Embedded 3D model animations
    12. Shadow Catcher
    13. 3D depth data extraction
    14. Modify materials properties of a 3D layer
    15. Work in 3D Design Space
    16. 3D Transform Gizmos
    17. Do more with 3D animation
    18. Preview changes to 3D designs real time with the Mercury 3D engine
    19. Add responsive design to your graphics 
  16. Views and Previews
    1. Previewing
    2. Video preview with Mercury Transmit
    3. Modifying and using views
  17. Rendering and Exporting
    1. Basics of rendering and exporting
    2. H.264 Encoding in After Effects
    3. Export an After Effects project as an Adobe Premiere Pro project
    4. Converting movies
    5. Multi-frame rendering
    6. Automated rendering and network rendering
    7. Rendering and exporting still images and still-image sequences
    8. Using the GoPro CineForm codec in After Effects
  18. Working with other applications
    1. Dynamic Link and After Effects
    2. Working with After Effects and other applications
      1. Export After Effects project as Premiere Pro project
    3. Sync Settings in After Effects
    4. Creative Cloud Libraries in After Effects
    5. Plug-ins
    6. Cinema 4D and Cineware
  19. Collaboration: Frame.io, and Team Projects
    1. Collaboration in Premiere Pro and After Effects
    2. Frame.io
      1. Install and activate Frame.io
      2. Use Frame.io with Premiere Pro and After Effects
      3. Frequently asked questions
    3. Team Projects
      1. Get Started with Team Projects
      2. Create a Team Project
      3. Collaborate with Team Projects
  20. Memory, storage, performance
    1. Memory and storage
    2. How After Effects handles low memory issues while previewing    
    3. Improve performance
    4. Preferences
    5. GPU and GPU driver requirements for After Effects
  21. Knowledge Base
    1. Known issues
    2. Fixed issues
    3. Frequently asked questions
    4. After Effects and macOS Ventura
    5. How After Effects handles low memory issues while previewing

Convert footage items between video formats

You can use After Effects to convert one kind of video to another. When converting video, keep in mind the following guidelines:

  • Changes in resolution may result in a loss of picture clarity, especially when up-converting from a standard-definition format to a high-definition format.

  • Changes in frame rate may require the use of frame blending to smooth out the interpolated frames. For longer footage items, the use of frame blending can result in very long render times.

  1. Import the footage you’re converting into a composition using the preset of the format you’re converting to. Example: if you’re converting NTSC to PAL, add your NTSC footage item to a composition with the appropriate PAL composition settings preset.
  2. Select the layer with the footage to be converted and choose Layer > Transform > Fit To Comp Width (or Fit To Comp Height).
    Obs!

    For converting between two formats with the same frame aspect ratio, either of these two Fit commands does the same thing; if the frame aspect ratios differ (for example, going from 4:3 to 16:9), fitting to width or height chooses between cropping or letterboxing the resulting image.

  3. Do one of the following:
    • If your footage has no scene cuts, choose Layer > Frame Blending > Pixel Motion. Pixel Motion provides the best results for interpolation of frames, but may require long rendering times.

    • If your footage has scene cuts, or if you want to sacrifice quality for shorter rendering times, choose Layer > Frame Blending > Frame Mix.

  4. Choose Composition > Add To Render Queue.
  5. In the Render Queue panel, next to Render Settings, choose the appropriate preset from the menu. For example, if you’re converting to DV footage, select DV Settings from the menu.
  6. In the Render Queue panel, next to Output Module, choose the appropriate output module preset from the menu, or choose Custom to enter custom settings. For example, if you’re converting to DV PAL, choose the D1/DV-PAL output module preset with the audio sampling rate that you require.
  7. Click the name of the output module preset that you chose in step 6 to select additional Format Options.
  8. Specify a name and destination for the output file using the controls to the right of the Output To heading in the Render Queue panel. (See Specify filenames and locations for rendered output.)
  9. Click the Render button to render your movie.

Convert DV footage from PAL to NTSC using pulldown

Because After Effects can easily convert film (24 fps) to video (29.97 fps) using 3:2 pulldown, you can perform a clean PAL-to-NTSC transfer by setting up 25-fps PAL video to act like 24-fps film. This lets you apply 3:2 pulldown to the footage when converting to 29.97 fps. This technique works especially well for progressive (noninterlaced) PAL video.

  1. Create a new composition with the DV NTSC or DV NTSC Widescreen preset.
  2. Import your DV PAL footage into the new composition.
  3. Select the layer with the DV PAL footage, and choose Layer > Transform > Fit To Comp Width (or Fit To Comp Height).
  4. Do one of the following:
    • To preserve audio synchronization but slightly lower the pitch, choose Layer > Time > Time Stretch, and then enter 95.904 in the Stretch Factor box.

    • To preserve audio pitch but not synchronization, or for clips without audio, right-click (Windows) or Control-click (Mac OS) the footage item in the Project panel, select Interpret Footage > Main, select Conform To Frame Rate, and then enter 23.976 in the Conform To Frame Rate box.

  5. Choose Composition > Add To Render Queue.
  6. Choose Custom from the Render Settings menu.
  7. In the Render Settings pane, enable Field Rendering (choose the field order required by your output type), select any option from the 3:2 Pulldown menu, and then click OK.
  8. Choose the output type from the Render Queue Output Module menu (for example, Microsoft DV NTSC 32 kHz).
  9. Specify a name and destination for the output file using the controls to the right of the Output To heading in the Render Queue panel. (See Specify filenames and locations for rendered output.)
  10. Click the Render button to render your movie.

Scaling a movie down

Several methods exist for producing a reduced-size movie from your composition, each with tradeoffs between speed and quality:

Nest the composition

Create a new composition at the smaller dimensions, and nest the large composition inside it. For example, if you create a 640x480 composition, place it in a 320x240 composition. Use the Fit To Comp command to scale the composition to fit the new smaller composition size: Press Ctrl+Alt+F (Windows) or Command+Option+F (Mac OS), and then collapse transformations by choosing Layer > Switches > Collapse. The resulting composition rendered at full resolution and best quality will have excellent image quality, better than if you had rendered using a reduced resolution.

Resize the composition

This method produces the highest quality reduced-size movie but is slower than nesting. For example, if you create a 640x480 composition and render it at full resolution, you can set the Resize value in the Output Module Settings dialog box to 50% to create a 320x240 movie. For a composition rendered at full resolution, the image quality is excellent when the Resize Quality is set to High.

Obs!

Do not use resizing to change the vertical dimensions of a movie when field rendering is on. Resizing vertically mixes the field order, which distorts motion. Use either cropping or composition nesting if you need to vertically resize a field-rendered movie.

Crop the composition

This method is ideal for reducing the size of a movie by a few pixels. Use the Crop options in the Output Module Settings dialog box. Remember that cropping cuts off part of the movie, so objects centered in the composition may not appear centered unless the movie is cropped evenly on opposite edges.

Obs!

In some special cases, After Effects will automatically crop rather than scale when creating an output movie with dimensions that don’t match the dimensions of the composition. For example, when creating a 720x480 movie with a pixel aspect ratio of 0.91 or 1.21 from a 720x486 composition, After Effects will crop instead of scale.

Crop to a region of interest

To render just a portion of the composition frame, define a region of interest in the Composition panel. Then, select the Region Of Interest option in the Output Module Settings dialog box before rendering. (See Region of interest (ROI).)

Obs!

Cropping an odd number of pixels from the top of a field-rendered movie reverses the field order. For example, if you crop one row of pixels from the top of a movie with Upper Field First field rendering, the field-rendering order then becomes Lower Field First. Remember that if you crop pixels from the top of the movie, you need to add to the bottom row of the movie to maintain the original size. If you don’t mind losing one scan line, this technique gives you a way to output two movies from one render, each with a different field order.

Render the composition at a reduced resolution

This method is the fastest for creating reduced-size movies. For example, if you create a 640x480 composition, you can set the composition resolution to one half, reducing the size of the rendered composition to 320x240. You can then create movies or images at this size. The reduced resolution reduces the sharpness of the image and is best used for creating preview or draft movies.

Obs!

When rendering at reduced resolution, set the quality of the composition to Draft. Rendering at Best quality while reducing resolution does not produce a clean image and takes longer to render than rendering at Draft quality.

Scaling a movie up

Increasing the size of the output from a rendered composition reduces the image quality of a movie and is not recommended. If you must enlarge a movie, to maintain highest image quality, enlarge a composition that was rendered at full resolution and highest quality using one of the following methods:

Nest the composition

Create a new composition at the larger dimensions and nest the smaller composition inside it. For example, if you create a 320x240 composition, you can place it in a 640x480 composition. Resize the composition to fit the new larger composition size, and then collapse transformations by choosing Layers > Switches > Collapse. The resulting composition rendered at full resolution and best quality will have better image quality than if you had resized the movie. However, this method also renders slower than if you created a composition and resized it.

Obs!

To create a draft movie with specific dimensions, use both the Resize option and reduced resolution in the rendered composition.

Resize the composition

For example, if you create a 320x240 composition and render it at full resolution, you can set the Resize value in the Output Module Settings dialog box to 200% to create a 640x480 movie. For a composition rendered at full resolution, the image quality is usually acceptable.

Obs!

Do not use resizing to change the vertical dimensions of a movie with field rendering. Resizing vertically mixes the field order, which distorts any motion. Use either cropping or composition nesting if you need to vertically resize a field-rendered movie.

Crop the composition

To enlarge a movie by a few pixels, increase the size using negative values for the Crop options in the Output Module Settings dialog box. For example, to increase the size of a movie by 2 pixels, enter –2 in the Cropping section of the Output Module Settings dialog box. Remember that negative cropping adds to one side of a movie, so objects originally centered in the composition may not appear centered when the movie is cropped.

Obs!

Adding an odd number of pixels to the top of a field-rendered movie reverses the field order. For example, if you add one row of pixels to the top of a movie with Upper Field First field rendering, the field-rendering order then becomes Lower Field First. Remember that if you add pixels to the top of the movie, you need to crop from the bottom row of the movie to maintain the original size.

Obs!

Adobe Photoshop provides fine control over resampling methods used for scaling of images. For fine control of resampling, you can export frames to Photoshop to change the image size and then import the frames back into After Effects.

For a list of plug-ins that provide high-quality scaling—including some designed to create high-definition images from standard-definition sources—see the Toolfarm website.

For a script that scales multiple compositions simultaneously, see the AE Enhancers forum.

Create a composition and render source footage items simultaneously

You can simultaneously create a composition from source footage and prepare it for rendering. This process is useful when you want to change some characteristic of the source footage, such as frame rate or compression method, and have that rendered version available in your project.

  1. Drag one or more footage items from the Project panel to the Render Queue panel, or select the footage items in the Project panel and do one of the following:
    • Choose Composition > Add to Render Queue.

    • Press Ctrl+Shift+/ or Ctrl+M(Windows) or Command+Shift+/ or Command+M (Mac OS).

    Obs!

    If the Use System Shortcut Keys option is enabled in General preferences (Mac OS), the shortcut is Ctrl+Cmd+M.

  2. After Effects creates both a new item in the render queue and a new composition in the Project panel for each footage item.
  3. Adjust the render settings as desired, and click Render.

Introduce 3:2 pulldown

If you are creating output for film that’s been transferred to video, or if you want to simulate a film look for animation, use 3:2 pulldown. Footage items that were originally film transferred to video and had 3:2 pulldown removed when imported into After Effects can be rendered back to video with 3:2 pulldown reintroduced. You can introduce 3:2 pulldown by choosing one of five different phases. (See Remove 3:2 or 24Pa pulldown from video.)

Obs!

It is important to match the phase of a segment that had 3:2 pulldown removed if it will be edited back into the video footage it came from.

  1. In the Render Queue panel, select the render item and then click the underlined text next to the Render Settings heading.
  2. For Field Render, choose a field order.
  3. For 3:2 Pulldown, choose a phase.
  4. Select other settings as appropriate, and then click Render.

Test field-rendering order

When you render a composition containing separated footage, set the Field Rendering option to the same field order as your video equipment. If you field-render with the incorrect settings, the final movie may appear too soft, jerky, or distorted. A simple test can determine the order in which your video equipment requires fields. 

Obs!

The field order might get altered if you change the hardware or software of your production setup. For example, changing your device control software or VCR after setting the field order can reverse your fields. Therefore, any time you change your setup, test the field-rendering order.

The test takes about 15 minutes and involves creating two movie versions of the same composition (one rendered with Upper Field First and one with Lower Field First), and then playing the movies to see which choice looks right.

  1. Create a simple composition with the correct frame size and frame rate. Choose an NTSC or PAL preset in the Composition Settings dialog box, and make the composition at least 3 seconds long.
  2. Within the composition, make a layer that is a small rectangular solid. The layer can be any color as long as it contrasts sharply with the composition background. You may want to add a title (such as “Upper Field First”) to the solid to make identification of the movie easier.
  3. Apply some fast movement to the solid using keyframes in its Position property. Set keyframes from the upper-left of the Composition panel to the lower-right for 1 second.
  4. Save the project, and then drag the composition to the Render Queue panel.
  5. Click the underlined Render Settings name, and then choose Upper Field First from the Field Render menu.
  6. Click OK, and then click Render to make the movie.
  7. In the composition, change the color of the solid in the Composition panel, and add a new title, such as “Lower Field First”, to identify it.
  8. Render the composition again, choosing Lower Field First from the Field Render menu in the Render Settings dialog box.
  9. Record both movies to the same device.
  10. Play both movies.

    One movie will look distorted and have jumpy horizontal motion or shape distortion during vertical motion. The other movie will play back smoothly, with sharply defined edges. Use the field order for the smooth-playing movie whenever you render movies with that particular hardware configuration.

 Adobe

Få hjälp snabbare och enklare

Ny användare?

Adobe MAX 2024

Adobe MAX
Kreativitetskonferensen

14–16 okt i Miami Beach och online

Adobe MAX

Kreativitetskonferensen

14–16 okt i Miami Beach och online

Adobe MAX 2024

Adobe MAX
Kreativitetskonferensen

14–16 okt i Miami Beach och online

Adobe MAX

Kreativitetskonferensen

14–16 okt i Miami Beach och online