Innovation Technology

Record computer Audio

Please install the audio driver if you want to record the audio from computer sound card, ComputerAudio can help you to complete it. Please download it from the following.

Sound driver installer download
Sound driver install problem on OS10.10 Yosemite

The sound driver is requested new code sign method on Yosemite by Apple. We apply for new authorization from Apple. Please download the new sound driver from the url: RecordSoundDriverInstaller.

图文展示How to export good GIF File?

How to export good GIF File?

4 Ways to Optimize an Animated GIF File

GIF is the standard format for compressing images with large areas of solid colors and crisp details like those in line art, logos, or type. Being an 8 bit-depth image format it would have disappeared from the web after the introduction of the JPEG and PNG file formats, but GIF is still a favored web file format thanks to its frame animation feature. In this tutorial, we will have a close look at all the available options to convert a video to a GIF animation, and how to optimize its file size. Let's get started!

1. Trimming Animation

First of all you will need to open the video file. Most of the time you won't need the whole sequence for the GIF animation, so you can trim the video in the Timeline Slider. Try to find a good place to trim your video.

2. Reducing Image Size

You can either reduce the image size from GIF Properties. I prefer to drag scale slider to reduce image size.

3. Reduce the Amount of Frames

Input appropriate frame count and delay time in GIF Properties dialog, Your gif file will more smooth.

4. Dithering

Set dither property in GIF Properties dialog.

Since GIF files contain a limited number of colors, we may want to imitate the missing colors with available ones using the dithering.  Dithering adds different-colored pixels in close proximity to each other to simulate secondary colors or smooth gradations in color. Some images must contain dithering to look good, but it's best to use the least amount of dithering possible to keep the smallest file size.

Sometimes no sound when recording video?

The sound may be mute if you select a invalid sound driver. If your recording audio have problem, you need open "sound" tag in System Preferences, check the selected device in Output tag and Input tag and change them to the default device. the Output default device is "Internal Speakers" and the Input default device is "Internal microphone".