NAME

       janus-pp-rec - Janus recordings post-processing utility.

SYNOPSIS

       janus-pp-rec [options] source.mjr [destination.[opus|ogg|mka|wav|webm|mkv|h264|srt]]

DESCRIPTION

       janus-pp-rec  is  a  simple utility that allows you to post-process recordings generated by Janus plugins
       (e.g., VideoRoom or others). More specifically, since Janus  recordings  (.mjr  files)  are  basically  a
       structured  dump of RTP packets, this utility reorders them all and extracts the frames in order to stick
       them together and save them to a playable media file. No transcoding is done.

       The target file depends on the codec used in the recording: for instance, VP8 and VP9 frames can be
       converted to a either a .webm or .mkv file, while H.264 frames can only be converted to a .mp4 or .mkv
       file instead. Right now, you can convert VP8/VP9 recordings to .webm/.mkv, H.264/H.265/AV1 recordings to
       .mp4/.mkv, G.711/G.722 recordings to .wav, Opus recordings to .opus/.ogg/.mka, and Data Channel text
       recordings to .srt. Binary Data Channel recordings can be dumped to files of any extension.

OPTIONS

       -h, --help
              Print help and exit

       -V, --version
              Print version and exit

       -F, --file-extensions
              Only print the supported target file extensions per codec  (default=off)

       -j, --json
              Only print JSON header  (default=off)

       -H, --header
              Only parse .mjr header  (default=off)

       -p, --parse
              Only parse and re-order packets  (default=off)

       -e, --extended-json
              Only print extended JSON report (automatically enables --json)  (default=off)

       -m, --metadata=metadata
              Save this metadata string in the target file

       -i, --ignore-first=count
              Number of first packets to  ignore  when  processing,  e.g.,  in  case  they're  cause  of  issues
              (default=0)

       -P, --payload-type=pt
              Ignore all RTP packets that don't match the specified payload type (default=none)

       -a, --audiolevel-ext=id
              ID of the audio-levels RTP extension (default=none)

       -v, --videoorient-ext=id
              ID of the video-orientation RTP extension (default=none)

       -d, --debug-level=1-7
              Debug/logging level (0=disable debugging, 7=maximum debug level; default=4)

       -D, --debug-timestamps
              Enable debug/logging timestamps  (default=off)

       -o, --disable-colors
              Disable color in the logging  (default=off)

       -f, --format=STRING
              Specifies  the output format (overrides the format from the destination)  (possible values="opus",
              "ogg", "mka", "wav", "webm", "mkv", "mp4", "srt")

       -t, --faststart
              For mp4 files write the MOOV atom at the head of the file  (default=off)

       -S, --audioskew=milliseconds
              Time threshold to trigger an audio skew compensation, disabled if 0 (default=0)

       -C, --silence-distance=count
              RTP packets distance used to detect RTP silence suppression, disabled if 0 (default=0)

       -r, --restamp=count
              If the latency of a packet is bigger than  the  `moving_average_latency  *  (<restamp>/1000)`  the
              timestamps will be corrected, disabled if 0 (default=0)

       -c, --restamp-packets=count
              Number  of  packets  used  for  calculating  moving  average  latency  for  timestamp  correction.
              (default=10)

       -n, --restamp-min-th=milliseconds
              Minimum latency of moving average to reach before starting to correct timestamps. If  the  current
              latency  is below this threshold the timestamps will not be changed. Below the threshold we ignore
              the moving average. (default=500)

EXAMPLES

       janus-pp-rec --header rec1234.mjr - Parse the recordings header (shows metadata info)

       janus-pp-rec --parse rec1234.mjr - Parse the recordings packets without processing them

       janus-pp-rec rec1234.mjr rec1234.webm - Convert a VP8 .mjr recording to a .webm file

       janus-pp-rec --restamp=1500 rec1234.mjr rec1234.opus - Convert audio .mjr recording to .opus while RTP
       correcting timestamps based on moving average latency

BUGS

       If you think you found a bug or want to contribute a feature, you can issue or a pull request on
       https://github.com/meetecho/janus-gateway/issues.

       Anyway, before doing that make sure you read the documentation at https://janus.conf.meetecho.com/docs/
       and that it has not been discussed already at https://groups.google.com/forum/#!forum/meetecho-janus. We
       only use Github for code issues, and NOT for configuration or usage issues: use the group for that.

SEE ALSO

       https://github.com/meetecho/janus-gateway - Official repository

       https://janus.conf.meetecho.com - Demos and documentation

       https://groups.google.com/forum/#!forum/meetecho-janus - Community

       https://www.meetecho.com/blog/ - Tutorials and blog posts on Janus

AUTHORS

       Lorenzo Miniero (lorenzo@meetecho.com)

                                                                                                 JANUS-PP-REC(1)