Problem with DirecTV HD-DVR HR21-100

Hi - new here. I have been trying for years to get a transcoder to work with DirecTV, but no luck. TVersity and iSedora have failed completely. Now trying with Serviio. Serviio works OK with my Sony Blu-ray (movies freeze once in a while), but I still cannot get any success with DirecTV. I changed the DirecTV profile to the suggested modded version, but still no luck. I get the following errors in the log:

2011-12-04 22:17:23,106 WARN [ProcessExecutor] Process cmd has a return code of 1! This is a possible error.
2011-12-04 22:17:30,221 ERROR [ResourceTransportRequestHandler] Error while processing resource, sending back 500 error. Message: FFmpeg execution failed
java.io.IOException: FFmpeg execution failed
at org.serviio.delivery.resource.AbstractTranscodingDeliveryEngine.retrieveTranscodedResource(AbstractTranscodingDeliveryEngine.java:117)
at org.serviio.delivery.resource.AbstractDeliveryEngine.deliver(AbstractDeliveryEngine.java:93)
at org.serviio.delivery.MediaResourceRetrievalStrategy.retrieveResource(MediaResourceRetrievalStrategy.java:121)
at org.serviio.upnp.webserver.ResourceTransportRequestHandler.handleRequest(ResourceTransportRequestHandler.java:116)
at org.serviio.upnp.webserver.AbstractRequestHandler.handle(AbstractRequestHandler.java:54)
at org.apache.http.protocol.HttpService.doService(HttpService.java:293)
at org.serviio.upnp.webserver.ServiioHttpService.doService(ServiioHttpService.java:58)
at org.apache.http.protocol.HttpService.handleRequest(HttpService.java:212)
at org.serviio.upnp.webserver.WebServer$WorkerThread.run(WebServer.java:187)

I'm guessing it has something to do with how ffmpeg is talking to the DVR, but I've no idea what that might be. Any suggestions?

Thanks.

[Illico]

FAQ:
Q- I can see the file on my TV and has a thumbnail picture, but when I try to play the file I get an error "The server is Temporarily unavailable".
Serviio log : ERROR [ResourceTransportRequestHandler] Error while processing resource, sending back 500 error. Message: FFmpeg execution failed java.io.IOException: FFmpeg execution failed

A- Turn on detailed logging (see link) you should be able to see the FFmpeg command that is used for the transcode. Try executing the command manually in a terminal window and post the (error) result here.