This image purposely displays video tiling, to show how this process is indeed useful to find video stream problems. ts file, which is viewable with VLC as a video stream: Select it, and enter a file name, eventually a filter if you want to extract some part of the stream only (for example a single PID, if the stream contains multiple). You must now see a new item in Wireshark, navigate to Tools > Dump MPEG TS Packets, as shown in the image: In the same folder, append the line at the end of the file named a. Install the LUA MPEG DUMP Wireshark plugin, available here: mpeg_a.įor MAC OS users, you can download the plugin named mpeg_packets_a at the above-linked page, and move it in the path: /Applications/Wireshark.app/Contents/Resources/share/wireshark. In order to decode the packets correctly as MPEG, you can watch this video:Ĭonvert the MPEG Trace into a Viewable Video File Under Current menu choose MP2T in the protocol list and click OKĪfter that, you see MPEG packets, as shown in the image: Select a UDP packet, right click on the protocol header, and select Decode As. You now see UDP packets (Wireshark might decode it as any other UDP protocol, depending on the port number, if you still don't see MPEG packets, continue to the next step). Under Current menu, choose UDP in the protocol list and click OK. Select a UEPI packet, right click on PSP header in the packet detail view, and click on Decode As. Wireshark might not automatically recognize the traffic as MPEG traffic, for example, if it was taken on a link between a Cable Modem Termination System (CMTS) and a Remote PHY Device (RPD), it might decode the traffic as UEPI instead: Problem: Convert a Sniffer Trace to MPEG and View it with VLC The goal is to not only enjoy watching videos for professional reasons on the workplace but also witness quality issues in video stream such as pixellization (macroblocking or tiling issues). The packet capture in this specific case has been taken between a cBR8 and RPHY, and converted into a video stream viewable with VLC. If your network is live, ensure that you understand the potential impact of any command. All of the devices used in this document started with a cleared (default) configuration. The information in this document was created from the devices in a specific lab environment. This document is not restricted to specific software and hardware versions. PrerequisitesĬisco recommends that you have knowledge of these topics: This document describes how to convert a sniffer trace containing MPEG traffic into a video that you can watch with VLC.
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