Use an Uploaded Video in a New Project Imovie
In that location are several elements to a Timeline. I'm going to breakup the visual cues for some of the more common and useful parts of a video.
Video files
These are marked past a thumbnail of the full content, and when hovered over, you can see the full duration of the clip.
These video files can exist tied to their own audio within the video, or they may be silent video clips. The divergence between a video clip with its own sound, and ane without its sound is shown below. Detect the blue strip underneath the video file: without audio, the blue strip is empty. On the video file with audio, you can run across the waveform of the clip mapped out in pale-blue.
It is difficult to layer two video files over one another, but not impossible: information technology is best to layer two layers of video when 1 video frame is smaller than another, in an overlay. Yous tin practise this by making sure you are in the "frames" bill of fare on the preview screen, select "Flick in Movie" from the dropdown box as pictured here, and so resizing your movie within each other.
Audio files
These are unremarkably represented as green boxes, and you tin come across the waveform representation of the audio. The waveform marks the frequency and volume of the audio in the clip. Hover over the audio clip, to see the full duration of the clip.
These audio files can be easily layered, to have several layers of sound happening all at one time. You lot can adapt the volume controls past clicking and dragging the yellow line that is depicted here right in the middle of the audio-runway.
Keyframes
These are depicted by little white dots on the audio file's waveform, as seen beneath.
Press 'option+left-click' to add a keyframe to the audio.
Keyframes are a way to control the volume of sure section of audio with more precision. If y'all want only twelve seconds of your sound, right in the middle of your sound to be quiet, for instance, you can arrange that by using a few keyframes to toggle only part of your audio to be quiet.
Video Transitions
These are depicted past translucent arrows between video clips.
Double-click on the arrows to alter the length of the transition to be slower or faster. You tin choose from a diverseness of different Transitions from this button on the toolbar at the elevation of the screen, and drag them down between your video clips.
Text
Text tin can be added into an iMovie in two different singled-out visual ways.
Firstly, it can be added equally an overlay over an existing video. This is useful if you want to add text, as if it is a caption, or a label to what is happening on screen.
To add together captioning or labelling text as an overlay, click on the push "Titles" from the toolbar at the top of the screen, select the advisable text location/duration from the variety of pre-set options, and drag information technology down, over the video file in your Timeline that you want it to label.
It should await similar a modest purple box, clinging to the video files.
Right click on the imperial box to change the duration of the text file in seconds. Double click on the regal box, to exist able to edit the text's content, font and size within the preview box, the box to the right of your screen, equally shown below.
Secondly, you tin can add a carve up text screen within a video. This is useful if y'all desire to accept a titlescreen, a credit scene, or whatsoever kind of text transition between images.
To add a split up text screen, click on the button "Titles" from the toolbar at the top of the screen, select the appropriate text location/duration from the variety of pre-set options, and elevate it downward into your timeline.
Identify it inbetween two video files. It should look similar a green box inbetween your videos. Double click on the text in the preview box, on the right-hand-side of your screen, to edit the text'south content, font and size.
Narration
Narration over a pre-exiting video can be helpful in lodge to properly set up the timing. Although it will expect the same as a regular audio file, you can in fact narrate directly over an iMovie projection that'due south in progress.
In order to do this, select the microphone push button underneath the preview screen. This will change the pause/play buttons underneath the preview screen into a red recording push.
Drag your mouse over to where you wish to begin your narration, and press the record button. You will be given three seconds to prepare yourself earlier yous tin can brainstorm narration and layer it over the video file.
Source: https://guides.library.ucsc.edu/DS/Resources/iMovie
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