What is an alpha channel? Generally speaking, red, green and blue works as three basic channels for images while alpha channel turns out to be an optional channel. Since alpha channel can define the transparence of the three channels, it is widely used in software like Photoshop to help users properly anti-alias two or more photos. Therefore, the same situation goes to videos with alpha channel. When using the video with alpha channel as the background of another movie, users can make the connection of the two movies look smooth and crisp.
“How can I use Flash movie as a background video for my recorded video?” “How can I convert Flash animation to AVI video with alpha channel so that I can use the Flash as computer screensaver?” Though many Flash animations are attached with alpha channel, the unique structure of Flash movie makes it unlikely to be used as background video or computer screensaver directly. Therefore, the conversion from Flash movie to AVI video with alpha channel seems to be quite necessary. This post will cover two methods to help users convert Flash SWF to AVI video with alpha channel.
Method One: Export Flash as AVI with alpha channel
With professional video editors like Adobe Premiere, users are allowed to edit the Flash animation and then export it as AVI video with alpha channel. However, since Adobe Premiere is the kind of software with high CPU occupancy, the exporting process will only slow down the computer’s processing speed. Besides that, the exported AVI video is usually extremely large in size. A 10MB Flash file will be exported as a 700MB AVI video.
Step 1: Download and launch Adobe Premiere Pro, open the video editor and then click “Import…” option in the drop-down menu of “File” to input the Flash movie for editing.
Step 2: After edit the Flash movie, click “Export” option in the drop-down menu of “File” and then select “Media…” option to enter into Export Settings panel.
Step 3: In order to convert Flash to AVI with alpha channel, set the output format as “Microsoft AVI”, video codec as “None”, depth as “32bit” and click “OK” button.
Step 4: Then Adobe Media Encoder will be started. Click “Start Queue” button to begin the conversion from Flash to AVI.
Method Two: Convert with Moyea SWF to Video Converter
For users who find the first method complicated and useless, they can manage the conversion from Flash to AVI with alpha channel with the help of converters like Moyea SWF to Video Converter. Within a few clicks, users are allowed to manage the whole conversion process. Moreover, the converted AVI video not only gets fair storage space but also original animated effects.
Step 1: Download and launch Moyea SWF to Video Converter. Open it and then click “From Folder” option in the drop-down menu of “Browser…” to import the local Flash for conversion.
Step 2: Click “Export” tab, check “AVI with alpha” box and then choose the video codec as either RGBA32 or MFZO in the drop-down menu of “Profile”.
Step 3: Click “Convert” tab to enter into corresponding panel where users can start the conversion from Flash movie to AVI video with alpha channel with buttons like “Play and Capture” and “Finish”. As the conversion ends, one can take full advantage of the converted AVI video with alpha channel.