Failed to create MPEG4DEC while MPEG4ENC is running

oh, the EVM package provide the examples, pls check.

I believe you can only have one instance of codec engine open (you can create multiple instances of codecs); therefore, when you say "different processes", I do no envision this as possible.

If you can provide the DVSDK version you are using, I can look into this and confirm.

Thank you, Juan

I'm using dvsdk_1_30_01_41 with codec_engine_2_00_01

Juan is correct that with the current release of the codec engine that it can only be opened by a given process, if a second process attempts to open codec engine while it is still opened by the first process there will be failure. It is possible to open the codec engine multiple times within a single process for each thread so you can have seperate threads going for audio and video, but cross process support for Codec Engine is not currently supported. In a future release opening codec engine from multiple processes will be possible using the Link Arbiter Daemon (LAD), though I am not sure when that will be available in a DVSDK release (probably 1Q09).

Oh, Hope LAD will appear soon. Now it seems I have to implement a daemon process to serialize the codec requests from different client processes. 

Thank you, Juan &  Bernie

It should not take too much longer; therefore (as Bernie suggested 1Q09), if you have other tasks you can work towards in the mean time, I would recommend you focus on those other tasks. 

Good idea.  Thanks, Juan