tar : tar -zxvf yourfile.tar.gz

https://www.freebsd.org/cgi/man.cgi?tar(1)


     -Z, --compress, --uncompress
      (c mode only) Compress the resulting archive with compress(1).
      In extract or list modes, this option is ignored. Note that,
      unlike other tar implementations, this implementation recognizes
      compress compression automatically when reading archives.


     -x      Extract to disk from the archive. If a file with the same name
      appears more than once in the archive, each copy will be
      extracted, with later copies overwriting (replacing) earlier
      copies.  The long option form is --extract.







































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利用ffmpeg取出ts流中特定的program





















https://trac.ffmpeg.org/wiki/Map    Example 8      MPEG stream selection:   The tricky part with selecting from MPEG TS is it may contain multiple streams/channels, and if you are receiving "live data" just specifying an index might not work because it can change from run to run, so  ffmpeg -i INPUT -map 0:6 OUTPUT # might not work the same every run, DO NOT USE THIS WAY!   Assuming your file is MPEG, you can run "ffmpeg -i INPUT" (not specify an output) to see what program id's and stream id's it contains, like this example (probesize and analyzeduration specified to help "make sure" it picks up all the streams in it, may not be always needed)  $ ffmpeg -probesize 50M -analyzeduration 50M -i INPUT ... Input #0, mpegts, from 'INPUT':   Duration: N/A, start: 22159.226833, bitrate: N/A   Program 1344     Metadata:       service_name    : 7 Digital       service_provider: Seven Network     Stream #0:0[0x401]: Video: mpeg2video (Main) ([2][0][0...








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