The invention discloses a distributed 
system for 
multimedia trans-coding, which comprises a user terminal, trans-coding servers and a dispatch 
server, wherein each trans-coding 
server consists of an 
active feedback module for feeding back operation state information thereof to the dispatch 
server in real time, and a trans-coding 
processing module for executing the trans-coding 
processing in a corresponding format according to a trans-coding task distributed by the dispatch server and returning executive results of the trans-coding task to the dispatch server; the dispatch server is composed of a register module for registering information of the trans-coding servers in a 
system, a user side interface module for receiving a trans-coding task request submitted by the user terminal and transmitting the executive results of the trans-coding task to the user terminal, a configuration module for configuring transmission parameters to the trans-coding task request, and a task distributing module for distributing trans-coding tasks to the corresponding trans-coding servers based on the transmission parameters and the operation state 
information feedback by the trans-coding server, whereinthe transmission parameters include priority parameters. The distributed 
system can ensure that the distribution of the trans-coding task is more efficient and reasonable, and saves system resources.