Cisco Cisco MXE 3500 (Media Experience Engine) Guida Alla Risoluzione Dei Problemi
MXE−3500: Workaround for Corrupted Source
Videos that Result in Failures
Videos that Result in Failures
Document ID: 116530
Contributed by Chip Schneider, Cisco TAC Engineer.
Oct 04, 2013
Oct 04, 2013
Contents
Introduction
Problem
Solution
Problem
Solution
Introduction
This document describes a problem that occurs when the Media Experience Engine (MXE) 3500 attempts to
transcode some source videos which might contain flaws (or corruption). These flaws may cause the MXE to
not process the video or may create output video files that contain the same flaws exhibited by the source
video (pixelization or artifacts).
transcode some source videos which might contain flaws (or corruption). These flaws may cause the MXE to
not process the video or may create output video files that contain the same flaws exhibited by the source
video (pixelization or artifacts).
Problem
Several examples of this problem might occur. In one example, a user attempts to convert an MP4 file to
Flash Video File (FLV) and the converted video show artifacts in the video. When you view the source video
in VLC Media Player, no artifacts display. However, when the source video is played in Apple QuickTime,
the artifacts are visible. Because MP4 files are transcoded with QuickTime by the MXE, the output file
contained the same flaws that are seen when you play the source video with the QuickTime player. In another
situation, the user is able to upload three of the five Audio Video Interleave (AVI) files through Cisco Show
and Share, and have them process correctly by the MXE. However, two of the videos start through the MXE,
and after some percentage of processing, it aborts and generates ECS error messages such as this:
Flash Video File (FLV) and the converted video show artifacts in the video. When you view the source video
in VLC Media Player, no artifacts display. However, when the source video is played in Apple QuickTime,
the artifacts are visible. Because MP4 files are transcoded with QuickTime by the MXE, the output file
contained the same flaws that are seen when you play the source video with the QuickTime player. In another
situation, the user is able to upload three of the five Audio Video Interleave (AVI) files through Cisco Show
and Share, and have them process correctly by the MXE. However, two of the videos start through the MXE,
and after some percentage of processing, it aborts and generates ECS error messages such as this:
2013−09−12 12:54:19,715 [ServiceWorker−TaskScheduler] ERROR
skSchedulerServiceWorker −[EC_COMPLETED] Task Execution
9078 is now complete. Reason = Failed.
2013−09−12 12:54:19,730 [ServiceWorker−LcsMessage] ERROR
Ecs.LcsMessageWorker − [AME_RESFAILED] [EC:9078]
[Node:localhost] Error, worker (24, prefilter) failed,
unexpectedly closed the connection while running.
In the LCS logs the following messages were seen:
2013−09−12 11:53:53 DBG MXE3500 prefilter 9078 Using reader timeout: [60] sec(s)
2013−09−12 11:53:59 STA MXE3500 prefilter 9078 0% complete, 6 seconds elapsed
2013−09−12 11:54:05 STA MXE3500 prefilter 9078 1% complete, 12 seconds elapsed
2013−09−12 11:54:11 STA MXE3500 prefilter 9078 2% complete, 18 seconds elapsed
2013−09−12 11:54:17 STA MXE3500 prefilter 9078 3% complete, 24 seconds elapsed
2013−09−12 11:54:19 ERR MXE3500 prefilter 9078 −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
2013−09−12 11:54:19 ERR MXE3500 prefilter 9078
Exception code: C0000005 EXCEPTION_ACCESS_VIOLATION
2013−09−12 11:54:19 ERR MXE3500 prefilter 9078 Fault address: 737E3152 01:00002152
C:\WINDOWS\system32\msvidc32.dll
2013−09−12 11:54:19 ERR MXE3500 prefilter 9078 illegal read of address(0x0214A000)