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• Piwik and Piwik PRO featured in TrustRadius buyer’s guide

  3 septembre 2014, par Piwik Core Team — About, Meta

  We are proud that Piwik and Piwik PRO are being featured in the TrustRadius Buyer’s Guide to Digital Analytics Software and scooping up two awards :

  

  Piwik Named A Leader in TrustRadius Digital Analytics TrustMap™ for Small Businesses.

  Piwik Rated Strong Performer in TrustRadius Digital Analytics TrustMap ™ for Enterprise.

  Rankings Based on User Ratings and Market Segment Adoption

  Learn more

  The TrustRadius TrustMaps™ guide features reviews from authenticated TrustRadius users on a number of digital analytics platforms from the biggest names in the digital analytics industry – Piwik and Piwik PRO being two of them. You can download your free copy of the buyer’s guide here (Note : there is a form to fill before you can download the PDF).

  Read the TrustRadius user reviews about Piwik on their website.

  Or view other awards won by Piwik here.

• Online RTMP radio with Python + FFmpeg + Nginx : unable to have a continuous output stream

  2 décembre 2023, par Igor Longo

  Thinking about an application similar to an online radio, I'm trying to transmit a sequence of audio files chosen by the user, where he chooses which file will be played in the sequence, sufficiently in advance for the reproduction not to be muted. I'm using FFmpeg in a Python script and an RTMP server running Nginx.
The problem is that interrupting the transmission between one file and another appears to be breaking the transmission on output. Sometimes files are skipped and other times it simply crashes for the client.

  


  I have already tried transmitting the sequence of files in real time, using '-re', and I have also tried not using '-re', creating a custom queue manager in Python with the intention of trying to keep only 'n' files in the server buffer .
Below is an excerpt of the code :

  


  ffmpeg_command = [
'ffmpeg',
'-loglevel', 'warning',
# '-re', # read input at native frame rate
'-i', file_path,
'-c:a', 'aac',
'-ar', '44100',
'-bufsize', '1024k',
'-af', 'atempo=1.0',
'-b:a', '128k',
'-f', 'flv',
'-flvflags', 'no_duration_filesize',
rtmp_url # server url
]
subprocess.run(ffmpeg_command, check=True)

  


  Any tips on how I can resolve this ?

  


• How to open a remote radio stream with ffmpeg's `avformat_open_input` without segfault ?

  19 août 2020, par Keyboard embossed forhead

  I'm at the beginning stage of writing a small app to stream internet radio stations. For the moment I'm just trying to get the detected info of the input stream. Whilst I am successful in getting all the stream's details via the the command line tool (ffmpeg -i ${URL}), calling the library's avformat_open_input(...) method call results in a SEGFAULT (a stack overflow to be precise when checked in valgrind).

  


  Passing a local file url works fine though in both the command line utility and the library call.

  


  Here's a minimal example :

  


  int test() {
    const char      * station_url = "http://stream.srg-ssr.ch/m/rsc_de/aacp_96";
    const char      * test_file   = "test.mp3"; //works
    AVFormatContext * av_ctx      = avformat_alloc_context();
    int               ret         = 0;

    avformat_network_init();

    if( ( ret = avformat_open_input( &av_ctx, station_url, NULL, NULL ) ) < 0 ) { //SEGFAULT   
        printf( "Could not open file '%s': %i", station_url, ret );
        return -1;
    }

    printf( "Format %s, duration %ld us", av_ctx->iformat->long_name, av_ctx->duration );

    avformat_network_deinit();
    return 0;
}


  


  If anyone with experience in dealing with acquiring remote streams using ffmpeg libraries in C has some insights I'd be grateful. Thanks in advance.

  


  I'm using ffmpeg v4.3.1 on Linux.