Error: Server Not Accessible

I just installed a fresh copy of Linux Mint, installed the dependencies for Serviio, and then installed Serviio and gave it a couple files to work with. On my Sony KDL-55HX800, which accesses my windows Serviio box just fine, I get a "Error: Server not accessible." screen when I try to play any file off of my Linux box. When I look at the Serviio logs I get:
I have no idea what I am doing wrong. Can anyone help?
- Code:
2014-01-30 09:37:09,557 WARN [ProcessExecutor] Process ffmpeg has a return code of 1! This is a possible error. Detailed output follows.
ffmpeg version 0.8.9-6:0.8.9-0ubuntu0.13.10.1, Copyright (c) 2000-2013 the Libav developers
built on Nov 9 2013 19:09:46 with gcc 4.8.1
*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
Expected number for threads but found: auto
2014-01-30 09:37:19,531 ERROR [ResourceTransportRequestHandler] Error while processing resource, sending back 500 error. Message: Transcoded file '/tmp/Serviio/transcoding-temp-31-sony2010-ORIGINAL.stf' cannot be found, FFmpeg execution probably failed
java.io.IOException: Transcoded file '/tmp/Serviio/transcoding-temp-31-sony2010-ORIGINAL.stf' cannot be found, FFmpeg execution probably failed
at org.serviio.delivery.resource.transcode.FileBasedTranscodingDeliveryStrategy.createInputStream(FileBasedTranscodingDeliveryStrategy.java:47)
at org.serviio.delivery.resource.transcode.AbstractTranscodingDeliveryEngine.retrieveTranscodedResource(AbstractTranscodingDeliveryEngine.java:134)
at org.serviio.delivery.resource.AbstractDeliveryEngine.deliver(AbstractDeliveryEngine.java:110)
at org.serviio.delivery.MediaResourceRetrievalStrategy.retrieveResource(MediaResourceRetrievalStrategy.java:153)
at org.serviio.delivery.GETMethodProcessor.retrieveResource(GETMethodProcessor.java:121)
at org.serviio.delivery.GETMethodProcessor.buildDeliveryContainer(GETMethodProcessor.java:48)
at org.serviio.delivery.AbstractMethodProcessor.handleRequest(AbstractMethodProcessor.java:100)
at org.serviio.delivery.ResourceDeliveryProcessor.deliverContent(ResourceDeliveryProcessor.java:81)
at org.serviio.upnp.webserver.ResourceTransportRequestHandler.handleRequest(ResourceTransportRequestHandler.java:86)
at org.serviio.upnp.webserver.AbstractRequestHandler.handle(AbstractRequestHandler.java:61)
at org.apache.http.protocol.HttpService.doService(HttpService.java:293)
at org.serviio.upnp.webserver.ServiioHttpService.doService(ServiioHttpService.java:77)
at org.apache.http.protocol.HttpService.handleRequest(HttpService.java:212)
at org.serviio.upnp.webserver.WebServer$WorkerThread.run(WebServer.java:192)
2014-01-30 09:39:30,309 WARN [ProcessExecutor] Process ffmpeg has a return code of 1! This is a possible error. Detailed output follows.
ffmpeg version 0.8.9-6:0.8.9-0ubuntu0.13.10.1, Copyright (c) 2000-2013 the Libav developers
built on Nov 9 2013 19:09:46 with gcc 4.8.1
*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
Expected number for threads but found: auto
2014-01-30 09:39:40,274 ERROR [ResourceTransportRequestHandler] Error while processing resource, sending back 500 error. Message: Transcoded file '/tmp/Serviio/transcoding-temp-31-sony2010-ORIGINAL.stf' cannot be found, FFmpeg execution probably failed
java.io.IOException: Transcoded file '/tmp/Serviio/transcoding-temp-31-sony2010-ORIGINAL.stf' cannot be found, FFmpeg execution probably failed
at org.serviio.delivery.resource.transcode.FileBasedTranscodingDeliveryStrategy.createInputStream(FileBasedTranscodingDeliveryStrategy.java:47)
at org.serviio.delivery.resource.transcode.AbstractTranscodingDeliveryEngine.retrieveTranscodedResource(AbstractTranscodingDeliveryEngine.java:134)
at org.serviio.delivery.resource.AbstractDeliveryEngine.deliver(AbstractDeliveryEngine.java:110)
at org.serviio.delivery.MediaResourceRetrievalStrategy.retrieveResource(MediaResourceRetrievalStrategy.java:153)
at org.serviio.delivery.GETMethodProcessor.retrieveResource(GETMethodProcessor.java:121)
at org.serviio.delivery.GETMethodProcessor.buildDeliveryContainer(GETMethodProcessor.java:48)
at org.serviio.delivery.AbstractMethodProcessor.handleRequest(AbstractMethodProcessor.java:100)
at org.serviio.delivery.ResourceDeliveryProcessor.deliverContent(ResourceDeliveryProcessor.java:81)
at org.serviio.upnp.webserver.ResourceTransportRequestHandler.handleRequest(ResourceTransportRequestHandler.java:86)
at org.serviio.upnp.webserver.AbstractRequestHandler.handle(AbstractRequestHandler.java:61)
at org.apache.http.protocol.HttpService.doService(HttpService.java:293)
at org.serviio.upnp.webserver.ServiioHttpService.doService(ServiioHttpService.java:77)
at org.apache.http.protocol.HttpService.handleRequest(HttpService.java:212)
at org.serviio.upnp.webserver.WebServer$WorkerThread.run(WebServer.java:192)
I have no idea what I am doing wrong. Can anyone help?