Click File and then Optimize Video
Almost all video editing software can reverse a clip. If it does not it is not worth having.
Mp4 is a good format for iMovie.
To adjust the speed of a clip in iMovie hover the mouse over the clip that you have added to the project and a small blue button with a down arrow will appear in the corner of the clip's thumbnail. Click on the down arrow and select Clip Adjustments from the choices offered. In the panel that opens you have buttons to choose between Clip, Video and Audio. Click the Clip button and in the middle is a speed adjustment/reverse option. It may ask you to convert the video before allowing you to adjust the clip.
First drag the movie you want to do the commenty for into iMovie. Then record yourself speaking in another application on your mac, (watch the clip your speaking over while you speak over it so you know what your saying) then drag that voice clip over the top of the clip which you've placed in iMovie.
Open iMovie and then open the movie that you want to upload to Youtube. Now, open the iMovie to youtube export screen by clicking File>Export>iMovie to Youtube. In the iMovie to Youtube export screen, set the video clip to upload, the video quality, the title and description to upload, the category and tags to upload, the youtube channel to upload to(optional), the advanced settings and then press the upload button.
To listen to audio in iMovie, first ensure your video clip is selected in the timeline. Press the spacebar to play the video and audio simultaneously. You can also use the volume slider in the audio settings to adjust the audio level. If you want to listen without video playback, you can select the audio waveform in the timeline and play it independently.
To reverse a clip in iMovie select the clip to be reversed, open the Inspector, in the Speed section click the Convert Clip button, and once the clip is converted tick the Reverse box.
Double click the clip.
iMovie '09 has basic Green Screen editing built in. To access this ensure that the Advanced Tools option is ticked in the general section of iMovies Preferences.Drag your "green screen" video onto your background video clip in your project. Select Green Screen from the menu that appears. You can move the clip around or double click it to open the inspector to make further adjustments.
The short answer is no. You cannot record video via iMovie without sound. But it is super easy to edit out the sound! 1. Open up the clip inspector by double clicking the clip you want to remove sound from. 2. Press "a" on your keyboard. This should bring you to your audio editing panel. From here you can adjust the volume with a lever! Hope this helps!
To add an intro to an Elgato HD60 game clip, you'll first need to import the recorded video into video editing software, such as Adobe Premiere Pro, iMovie, or Shotcut. Create or select your intro video, then drag and drop it to the beginning of your game clip on the timeline. Adjust the duration and transitions as needed, and finally export the edited video in your desired format.
If you have a mac, you just go to imovie and right click your video and then hit clip adjustments and audio adjustments