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• Evolution #2173 : Date de création / publication

  8 janvier 2012, par Stanislas _

  On peut ajouter qu’une date de création distincte de la date de publication permettrait également de pouvoir fixer la date de publication avant d’effectuer l’action de publication. Devoir publier un article avant de pouvoir modifier la date pour que la publication s’effectue dans le futur est (...)

• Recording from online stream and listening to it at the same time (ffmpeg / ffplay)

  28 juin 2016, par Konstantin

  Sometimes I like to record programmes from online radio channels, live or archived streams too. When there is no interesting actual programmes in the radios, I also would like listening to it at the same time while recording. I am using such command lines, which is called from Ruby script - to help parsing radios’ timetables / programme pages and constructing the proper URLs of archived programmes which usually contains some timecode, such as 20160616_083000.mp3, etc.
  So my command line to call from Ruby script looks like :

      programmes.each{|datepart,programme_length| 
  
        cmd=%Q{ffmpeg -y -i http://example.com/stream/#{datepart}.mp3 -t #{programme_length} -c:a libmp3lame -b:a 160k "#{fname}" -c copy -t #{programme_length} -f mp3 -f rtp rtp://127.0.0.1:8888}
  
        system cmd
  
  }

  It resides in a loop to record the previously parsed and selected programmes. Of cource the programmes are recorded properly and at the same time ffmpeg streams it as an mp3 rtp stream as well on localhost at the given port. In another terminal window I connect to the streamed data with one-liner as follows :

  while true; do ffplay -i rtp://127.0.0.1:8888 -autoexit; done

  I am using the -autoexit switch which should be stop playing the stream when it is ended and the "while" loop should be connect again to the new stream which is served by the programme recording "each" loop. Unfortunately it keeps playing after the end, and doesn’t initiate a new connection to the newly started stream. How to use ffplay properly to stop playing after rtp stream is ended and let it connect again to the new stream ?

• Get a thumb from a partial loaded file with flutter web [closed]

  6 novembre 2024, par JD11

  I use ffmpegwasm javascript port ffmpeg to get thumbnail of video files using flutter. Some time files are very large. Can i download only a part of file (using html header range) and get a thumbnail.

  


  to get part of file i use

  


        var response = await http.get(Uri.parse(bUrl!), headers: {"range": "bytes=0-10000000"});
      data = response.bodyBytes;

ffmpegWasm!.writeFile('temp.mp4', data);

  await ffmpegWasm!.run([
    '-y',
    '-ss',
    '00:00:01',
    '-i',
    'temp.mp4',
    '-vframes',
    '1',
    "-an",
    "-vf",
    "scale=$width:-1",
    outName
  ]); // '-c:a', 'copy'

  return ffmpegWasm!.readFile(outName);


  


  but i get an error reached eof, corrupted STCO atom.

  


  I know that VLC can display image even on incomplete file.

  


  thank you in advance