fix:Set the recording timestamp,so can use stream_tags[creation_time]

[cheermao]

Currently recording video files, there is no recording start time label field, add timestamp options , then through the ffprobe command,could get the recording time. ffprobe -v quiet -show_entries stream_tags=creation_time -of default=noprint_wrappers=1:nokey=1 -i [recordfile] | head -1

[jitsi-jenkins]

Hi, thanks for your contribution! If you haven't already done so, could you please make sure you sign our CLA (https://jitsi.org/icla for individuals and https://jitsi.org/ccla for corporations)? We would unfortunately be unable to merge your patch unless we have that piece :(.

[cheermao]

Hi, thanks for your contribution! If you haven't already done so, could you please make sure you sign our CLA (https://jitsi.org/icla for individuals and https://jitsi.org/ccla for corporations)? We would unfortunately be unable to merge your patch unless we have that piece :(.

I have signed the CLA using the email address corresponding to my account. pls,check it out.

[codecov[bot]]

Codecov Report

Merging #527 (a0943e3) into master (098b18c) will increase coverage by 0.04%. Report is 2 commits behind head on master. The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master     #527      +/-   ##
============================================
+ Coverage     48.13%   48.18%   +0.04%     
  Complexity      174      174              
============================================
  Files            72       72              
  Lines          2115     2117       +2     
  Branches        201      201              
============================================
+ Hits           1018     1020       +2     
  Misses         1029     1029              
  Partials         68       68              

Files	Coverage Δ
.../kotlin/org/jitsi/jibri/capture/ffmpeg/Commands.kt	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes

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[aaronkvanmeerten]

Thanks for this one!