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• Anomalie #2761 : Activation des plugins

  15 juin 2012, par cedric -

  Donc si j’active le plugin menu est que le plugin saisies n’est pas dispo dans plugins/ j’ai un message d’erreur et je perds ma sélection, en effet. Chose que le core nu ne fait pas a contrario dans ce cas (il garde menu selectionné, en erreur). Mais si le plugin saisies est dispo, il est ajouté (...)

• Evolution #3886 : Trier les menus du bandeau de l’espace privé dans l’ordre alphabétique

  5 janvier 2017, par nico d

  Je pense aussi que si le tri alpha n’est pas généralisé dans un menu, ça peut amener de la confusion, ce qui enlèverait tout l’intérêt.

  Mais pour vous faire une idée de ce tri alpha et voir si ça manque de cohérence, le mieux c’est d’essayer le plugin, il est dispo pour 3.0 et 3.1 dans SVP ("Menu privé alphabétique").

• How to send an mpeg_ts stream verbatim over rtp

  30 mars 2018, par Bruce Adams

  I’m trying to write some software to capture and process data from an mpeg_ts stream.
  As part of this I need, for testing, to generate a test mpeg_ts streams for my software to capture

  One option for this is to save a real stream to disk.
  So with that in mind I have a source transport stream which is being unicast via rtp to my box via port 1234. I can view it in vlc using :

  vlc rtp://@:1234

  and I can move between channels via the "programme" menu.
  subtitles are available but no EPG
  kaffeine works as well but only shows the first channel

  I can save this stream using :

  ffmpeg -i rtp://172.16.13.81:1235 -map 0 -copy_unknown -c copy save_ffmpeg.ts

  note : that rtp ://@:1235 does not work you need your full IP address though udp ://@:1235 does work for udp streams - see https://ffmpeg.zeranoe.com/forum/viewtopic.php?t=2386

  However there is a problem. When I try to open the resulting file save_ffmpeg.ts in VLC
  instead of opening one channel at a time it opens a new window for each channel which indicates an issue.

  If on the other hand I save it using :

  cvlc rtp://@:1235 :demux=dump :demuxdump-file=save_vlc.ts

  the resulting ts file can be viewed as normal.
  What is the difference ?

  Looking at the output of mediainfo on save_ffmpeg.ts vs save_vlc.ts
  I can see that ffmpeg has stripped the streams labelled Menu #1 to Menu #5.

  >mediainfo save_ffmpeg.ts  | grep -E '^[A-Za-z]+ #'
  
  Video #1
  
  Video #2
  
  Video #3
  
  Video #4
  
  Video #5
  
  Audio #1
  
  Audio #2
  
  Audio #3
  
  Audio #4
  
  Audio #5
  
  Audio #6
  
  Audio #7
  
  >mediainfo save_vlc.ts  | grep -E '^[A-Za-z]+ #'
  
  Video #1
  
  Video #2
  
  Video #3
  
  Video #4
  
  Video #5
  
  Audio #1
  
  Audio #2
  
  Audio #3
  
  Audio #4
  
  Audio #5
  
  Audio #6
  
  Audio #7
  
  Menu #1
  
  Menu #2
  
  Menu #3
  
  Menu #4
  
  Menu #5

  I tried adding -map_metadata 0 but to no avail.

  Q1 What is wrong with the ffmpeg command ?
  How do I get it to also save the menu streams ?

  Now I can send the ts that has the menu with ffmpeg using :

  ffmpeg -re -i save_vlc.ts -c copy -f mpegts udp://127.0.0.1:9999

  to get one channel
  but again if I try to send everything :

  ffmpeg -re -i ./save_file.ts -map 0 -map_metadata 0 -copy_unknown -c copy -f rtp_mpegts rtp://127.0.0.1:9999

  then :

  vlc rtp://127.0.0.1:9999

  opens a window for each and every channel.

  Q2 How do I fix this ?

  Q3 What would the equivalent gstreamer commands be to send and recieve ts files ?

  The relevance of the final question is that one of the options being considered for implementing the MPEG_TS reader is gstreamer. Though, it probably warrants a question of its own.