pcap_to_ts
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pcap_to_ts [2016/12/15 08:00] – walkeradmin | pcap_to_ts [2023/03/09 22:35] (current) – external edit 127.0.0.1 | ||
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====== PCAP to TS ====== | ====== PCAP to TS ====== | ||
+ | <color orange> | ||
---- | ---- | ||
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The format for tcpdump is - tcpdump -i < | The format for tcpdump is - tcpdump -i < | ||
tcpdump -i eth2 -B 64000 dst host 239.0.12.1 and port 1234 and multicast -w / | tcpdump -i eth2 -B 64000 dst host 239.0.12.1 and port 1234 and multicast -w / | ||
+ | |||
| | ||
+ | Example: | ||
+ | tcpdump -i eth2 -B 64000 dst host 239.0.100.1 and port 1234 and multicast -w / | ||
+ | |||
+ | |||
if the syntax is correct, the tcpdump will start: | if the syntax is correct, the tcpdump will start: | ||
tcpdump: listening on eth2, link-type EN10MB (Ethernet), capture size 65535 bytes | tcpdump: listening on eth2, link-type EN10MB (Ethernet), capture size 65535 bytes | ||
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==== Convert .pcap to .ts ==== | ==== Convert .pcap to .ts ==== | ||
+ | <color red>This is done on your computer, not on the MFEL</ | ||
+ | \\ | ||
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Having created a .pcap file means we have all of the information we need to replay and analyse any captured stream. However before we access the stream we need to extract the Transport Stream from the .pcap file and save it as a .ts. | Having created a .pcap file means we have all of the information we need to replay and analyse any captured stream. However before we access the stream we need to extract the Transport Stream from the .pcap file and save it as a .ts. | ||
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There is a tool available called <color red> | There is a tool available called <color red> | ||
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+ | Download the extractor file here {{ : | ||
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extractor source_file.pcap output.ts multicast port | extractor source_file.pcap output.ts multicast port | ||
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- | If I have a source file called <color red> | + | If I have a source file called <color red> |
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+ | <color red> When using tcpdump, after capture you will get a packet count, when using extractor the packet count should be around the same, if not then the extract did not do the entire file.</ | ||
+ | \\ | ||
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- | + | ==== And Finally... ==== | |
- | Finally, see the FFMPEG section where you can convert .ts files to .mpg files (great for converting captures for replay on TVs via USB).[[ffmpeg|FFMPEG]] | + | See the FFMPEG section where you can convert .ts files to .mpg files (great for converting captures for replay on TVs via USB).[[ffmpeg|FFMPEG]] |
pcap_to_ts.1481788803.txt.gz · Last modified: 2023/03/09 22:35 (external edit)