Category: media

Extracting MPEG2-TS from Wireshark capture file

When working with IP multicast streams it can sometimes be useful to convert a captured IP stream file to a corresponding MPEG2 transport stream (TS) file. Wireshark has a built-in capability to extract MPEG2-TS packets from the UDP packets of an IP multicast stream. This feature is somewhat hidden away in the menus and not obvious to find.

An IP multicast stream

First select a frame of the UDP stream you are interested in by clicking on it. Then navigate the menu bar to “Analyze” > “Follow” > “UDP Stream”.

Follow the UDP stream

A new window will open, showing the contents of the UDP stream in one continuous flow of data. Now select “Show and save data as” > “Raw” and hit “Save as …”.

Extract MPEG2-TS from UDP stream

Give the new file a name and hit “Save”.

It is also possible to filter out specific parts of the UDP stream, but in most cases the “Entire conversation” is what is wanted.

The result: a plain MPEG2-TS

That’s it! All MPEG2-TS packets have been extracted from the UDP stream and are stored to a separate file. The MPEG2-TS file can now be used for other tasks, like error checks or timing analysis.

Sourcing in Shenzhen (China)

For everyone who wants to know how to source electronic parts or produce a product cheaply in China, two of the best summaries on how to do this.

The Essential Guide to Electronics in Shenzhen

SOURCE PARTS ON TAOBAO: AN INSIDER’S GUIDE

Strawman Fallacy

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