1. Asynchronization of video and audio
Reason: Most flash to video conversion tools take the audio file in a Flash file by recording the sound. And they play a Flash file two times. The first time is to process the video and the second time is to record the audio. Because to record the audio, capture the video and compress it into a video file at the same time is beyond the capability of most computers. Since converting video involves capturing Flash frames and compress them into a video, the time it takes to process the video will be much longer than the time recording the audio takes, which results in that the lower system configuration a computer has the less synchronization you will get.
Solution offered by Moyea Flash to Video Converter: Our program does not play a Flash file twice, does not get the audio by recording it, and does not capture the video by playing the Flash file in a normal speed. We adopt the technology of Lower-Playback-Speed while converting, and both extract the audio and covert the video just by playing the Flash file once. Therefore, with our program, the synchronization issue does not exist at all regardless of your computer system configuration.
2. Low sound quality, jumpy sound, or no sound
Reason: This is also caused by recording audio. If there is no sound, the reason may be that the method of recording sound with no microphone is not supported by many sound cards. If the sound is jumpy or in low quality, the reason maybe be that there is a quality loss when the audio is being played, and records some other sounds from the computer, which makes it almost impossible to get the original sound quality.
Solution offered by Moyea Flash to Video Converter: Our program does not get the audio by recording it but by extracting the audio from a Flash file.