HyperCam is a free Windows program that produces AVI (Audio Video Interleaved) recordings of your computer's screen activity and sound card output. Common uses include recording PowerPoint presentations, "how to" screencast tutorials and gaming activity. Its video recording quality is very good, but users often encounter audio synchronisation problems when replaying movies. You can resolve this by re-synchronising the video and audio in any multi-track video editing program, such as Windows Live Movie Maker.
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Things you need
- Multi-track video editing program.
Open your video editing program and click "Add Files" to import the HyperCam AVI clip. Inspect its video and audio quality in the "Preview" window.
Select the clip in the "Media Assets" tray and drag it to the start of the program's editing timeline. With the playhead positioned at "zero," play the clip to ensure that it can be edited. The program may perform a temporary "render" of the clip at this stage; this will produce a smooth playback. Open the "Save as" dialogue, name the project and save it before proceeding.
Click on the clip once to highlight it. Right-click and select "Unlink" to separate the video and audio tracks, and use the "zoom" tool to magnify the timeline view.
Click "Play" (or tap the space-bar once) and determine the extent of the sync slippage. If the audio track lags behind the video, click the video track once and slide it a few frames to the right, using peaks in the audio track's waveform display to help you. If the lag is one second, slide the track by 30 frames. Play the track and inspect the synchronisation. Repeat the process, making fine adjustments until synchronisation is restored.
Select both the video and audio tracks. Right-click and select "Link" to lock them together. Click "Export" to render a finished export file as "AVI."
Tips and warnings
- If you intend to edit your HyperCam 2 movies, match the screen recording resolution to a standard video specification, such as 1920x1080 or 1280x720 pixels. This will prevent the editing program from distorting the picture.
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