你可以参考producer help
Using RMBatch
RMBatch gives you the conversion and broadcasting capability of the RealProducer Plus main interface, but also allows you to create a batch file and record multiple .rm files with a single command.

Examples
The following example records foo.avi into a RealMedia file for 28 and 56 Kbps audiences, audio set to voice only, video set to normal, file type set to SureStream, and "The Title" as the title of the clip. The output file defaults to foo.rm.


rmbatch /I C:\foo.avi /T 0,1 /A 0 /V 0 /F 1 /B "The Title"

The next example records from a live source to a RealServer with the same settings as above.


rmbatch /L 0,0 /S "myserver:4040/foo.rm" /T 0,1 /A 0 /V 0 /F 1 /B "The Title"

你编一个批处理文件就可以了
此外你可以到www.souxin.com
下载一个批量转换工具也十分方便。