Replay Media Catcher allows to extract AAC audio tracks from FLV files to M4A and M4B.



How to convert YouTube FLV and MP4 video to M4A without losing quality with Replay Media Catcher (RMC) 4 after downloading YouTube video automatically:

• Open Replay Media Catcher.
• Start Recording
• Select the "Audio Extraction (Extract AAC to M4A)" conversion preset
• Navigate to YouTube and start playing videos
• YouTube .FLV, .MP4 streams will be downloaded/captured automatically. Then AAC audio tracks will be extracted to M4A files automatically.

How to convert YouTube FLV and MP4 video to M4B without losing quality with Replay Media Catcher (RMC) 4 after downloading YouTube video automatically:

• Open Replay Media Catcher.
• Start Recording
• Select the "Audio Extraction (Extract AAC to M4B)" conversion preset
• Navigate to YouTube and start playing videos
• YouTube .FLV, .MP4 streams will be downloaded/captured automatically. Then AAC audio tracks will be extracted to M4B files automatically.