Recherche avancée

Sur d’autres sites (12051)

• asp.net core live mp4 streaming

  8 octobre 2020, par kdma

  Prologue :

  


  I have a hikvision ipcamera that streams raw h264 from a rtsp :// url, I need to play this live feed in the browser.

  


  I managed to get a basic RTSP->ffmpeg-> (faststart) mp4 pipeline working and I can play the video when saved to a file.

  


  I don't understand how to make my controller action "streamable".

  


  I've tried various approaches like writing to Response.Body, Transfer-Encoding : chunked but nothing seems to work.
Here is the basic code :

  


  public IActionResult Play5(){    
      var ms = new MemoryStream();
      var muxer = new RTSPToMp4(ms);
      Task.Run(() => muxer.Stream());
      return new FileStreamResult(ms, "video/mp4");
}


  


  The memory stream contains the live feed but the response is empty here is the request\response from chrome :

  


  Request

  


  method: GET
:path: /api/stream/play5
:scheme: https
accept: */*
accept-encoding: identity;q=1, *;q=0
accept-language: it-IT,it;q=0.9,en-US;q=0.8,en;q=0.7
cache-control: no-cache
pragma: no-cache
range: bytes=0-
referer: https://localhost:5001/Stream
sec-fetch-dest: video
sec-fetch-mode: no-cors
sec-fetch-site: same-origin
user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.121 Safari/537.36


  


  Response

  


  content-length: 0
content-type: video/mp4
date: Thu, 08 Oct 2020 14:31:06 GMT
server: Kestrel
status: 200


  


  Am I missing something ?

  


• AWS Lambda Layer FFMPEG in Express API not working

  11 octobre 2020, par WorkoutBuddy

  This is the code I have in my lambda function :

  


  app.post('/api/youtube/download', async (req, res) => {
    const body = req.body;
    const { url } = body;

    res.header('Content-disposition', 'attachment; filename=video.mp3');


    const youTubeStream = await youTube.getStream(url);


    console.log('before convertig')
    const result = spawnSync("/opt/bin/ffmpeg", ['-i', youTubeStream,'-vn', '-ar', '44100', '-ac','2','-b:a','192k', '/tmp/file.mp3'], { stdio: 'inherit' })
    console.log(result)
    const output = result['output']
    console.log(output.toString())
    console.log('after converting')
    const stream = await fs.createReadStream('/tmp/file.mp3')
    stream.pipe(res)
}


  


  ---

  


  This is the output in Cloudwatch :

  


  INFO ,,ffmpeg version 4.1.3-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
configuration : —enable-gpl —enable-version3 —enable-static —disable-debug —disable-ffplay —disable-indev=sndio —disable-outdev=sndio —cc=gcc-6 —enable-fontconfig —enable-frei0r —enable-gnutls —enable-gmp —enable-gray —enable-libaom —enable-libfribidi —enable-libass —enable-libvmaf —enable-libfreetype —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-librubberband —enable-libsoxr —enable-libspeex —enable-libvorbis —enable-libopus —enable-libtheora —enable-libvidstab —enable-libvo-amrwbenc —enable-libvpx —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxml2 —enable-libxvid —enable-libzvbi —enable-libzimg
libavutil 56. 22.100 / 56. 22.100
libavcodec 58. 35.100 / 58. 35.100
libavformat 58. 20.100 / 58. 20.100
libavdevice 58. 5.100 / 58. 5.100
libavfilter 7. 40.101 / 7. 40.101
libswscale 5. 3.100 / 5. 3.100
libswresample 3. 3.100 / 3. 3.100
libpostproc 55. 3.100 / 55. 3.100
[object Object] : No such file or directory // NO IDEA WHERE THIS COMES FROM

  


  ---

  


• AWS Lambda does not log into CW while using ffmpeg binary

  11 octobre 2020, par WorkoutBuddy

  I have simple endpoint for downloading and converting a youtube video :

  


  app.post('/api/youtube/download', async (req, res) => {
    const body = req.body;
    const { url } = body;

    res.header('Content-disposition', 'attachment; filename=video.mp3');

    await youTube.downloadVideo(url)
    
    // Check folder before
    exec('ls -la /tmp', (error, stdout, stderr) => {
      console.log(`stdout:\n${stdout}`);
    });
    
    console.log('before converting')

    spawnSync("/opt/bin/ffmpeg", ['-i', '/tmp/myVideo.flv','-f', 'mp3', '-ab','192000', '/tmp/file.mp3'], {
        stdio: 'pipe',
        stderr: 'pipe'
    })
    console.log('after converting')
    // Check folder after
    exec('ls -la /tmp', (error, stdout, stderr) => {
      console.log(`stdout:\n${stdout}`);
    });
    
    const stream = fs.createReadStream("/tmp/file.mp3")
    stream.pipe(res)


});


  


  I have no idea why no logs occur to debug :


  


  I have already increas the timeout of the lambda function to 30s
When executing the ffmpeg binary locally it takes less than 5 secons to convert anything.