Wanna convert RA video files to AU audio format? Our RA to AU converter serves you at any time!
RealAudio files were originally identified by a filename extension of .ra (for Real Audio). In 1997, RealNetworks also began offering a video format called RealVideo. The combination of the audio and video formats was called RealMedia and used the file extension .rm. However, the latest version of RealProducer, Real's flagship encoder, reverted to using .ra for audio-only files, and began using .rv for video files (with or without audio), and .rmvb for VBR video files. The .ram (Real Audio Metadata) and .smil (Synchronized Multimedia Integration Language) file formats are sometimes encountered as links from web pages.
The AU file format is a simple audio file format introduced by Sun Microsystems. The format was common on NeXT systems and on early Web pages. Originally it was headerless, being simply 8-bit µ-law-encoded data at an 8000 Hz sample rate. Hardware from other vendors often used sample rates as high as 8192 Hz, often integer factors of video clock signals. Newer files have a header that consists of six unsigned 32-bit words, an optional information chunk and then the data (in big endian format).
How to convert?
Step 1 Add video or audio formats
Press Add to add the RA you want to convert, then select AU as the output format.
Step 2 Edit the file (Optional)
Press to play the files and the timer will start to work. Press to stop.
This feature is designed for you to measure your favorite segment.
When you want to designate the segment, you can press to set starting time and ending time.
Press to listen to the selected segment.
Step 3 Customize the audio (Optional)
As can be seen from the diagram, the panel allows you to set the expected volume and output format of the audio, and to customize the sample rate, Bit rate and channels the audio will contain.
Press to listen to the audio.
Step 4 Customize the metadata information (Optional)
We can see from the picture that the metadata information of the output audio, such as title, author, copyright, comment, album, track, can be customized merely by typing in what you want to display.
Step 5 Get your cool melody
When all settings are completed, just press Start Button to gain your favorite AU from your output directory soon.