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• How to stream video form device to ingestion server using nodejs

  28 juillet 2021, par rocky

  I'm building a live streaming app (one-to-many) and am using AWS IVS as my ingestion server.

  


  Now, I get the video feed from mediaRecorder api transmits the video using socket.io as a buffer. Now the challenge is to parse the real-time buffers to AWS IVS or any other ingestion server.

  


  I figured that the only way to stream the video is by using ffmpeg and that's where am completely stuck.

  


  Here is my code

  


  // ffmpeg config
const { spawn, exec } = require("child_process");

let ffstr = `-re -stream_loop -1 -i ${input} -r 30 -c:v libx264 -pix_fmt yuv420p -profile:v main -preset veryfast -x264opts "nal-hrd=cbr:no-scenecut" -minrate 3000 -maxrate 3000 -g 60 -c:a aac -b:a 160k -ac 2 -ar 44100 -f flv rtmps://${INGEST_ENDPOINT}:443/app/${STREAM_KEY}`;

let ffmpeg = spawn("ffmpeg", ffstr.split(" "));

// Socket.io
socket.on("binarystream", async (mBuffer) => {
      // TODO: Get the buffer
      // TODO: Ingest/convert to mp4
      // TODO: Stream to IVS

      // TODO: FFMpeg is your best bet
      // console.log(mBuffer);

      ffmpeg.stdin.write(mBuffer);
      
  });


  


  PS : Even if you don't have the direct answers I'm available for discussion

  


• laravel ffmpeg setAdditionalParameters not adding filters when using exportForHLS

  24 juin 2021, par Warren Visser

  I am trying to add additional filters using the setAdditionalParameters method to the bitrate using Laravel Ffmpeg. When I add the additional filters it does not show when used in combination with exportForHLS. It does however work when using the export method.
When using exportForHLS the addFilter method adds a complex filter and not a simple filter. Any idea how to achieve this or is this a bug inside the package.

  


    public function convert(File $file, Movie $movie)
{
    try {
        $additionalParameters = ['-preset:v', 'ultrafast'];

        //  convert video to multiple bitrates
        $higBitrateFormat = (new X264('copy'))
            ->setAudioChannels(2)
            ->setKiloBitrate(3000)
            ->setAdditionalParameters($additionalParameters);

        $mediaOpener = FFMpeg::fromDisk($file->disk)
            ->open($file->path)
            ->exportForHLS()
            ->setSegmentLength(4)
            ->setKeyFrameInterval(48)
            ->addFormat($higBitrateFormat)
            ->toDisk('streamable_videos')
            ->save($file->uuid . '.m3u8');

        $attr = ['converted_at' => Carbon::now()->toDateTimeString()];
        $this->movieRepositoryInterface->update($movie->id, $attr);
        return $mediaOpener;
    } catch (EncodingException $exception) {
        $attr = ['conversion_failed' => 1];
        $this->movieRepositoryInterface->update($movie->id, $attr);
        Log::error('encoding failed.', [$exception->getErrorOutput()]);
        throw new CustomEncodingException($exception->getMessage(), $exception->getCode());
    }
}


  


  Here is the ffmpeg output :

  


  


  -y -threads 12 -i /home/vagrant/code/streaming-api/storage/framework/testing/disks/public/videos/Am1t18C8NnnOlxPCVIx3OiEMzcaXhhEpReDBpBaW.png -map 0 -vcodec libx264 -b:v 3000k -sc_threshold 0 -g 48 -hls_playlist_type vod -hls_time 4 -hls_segment_filename /home/vagrant/code/streaming-api/storage/framework/testing/disks/streamable_videos/9703f521-ec4b-428f-b756-b08946e726b8_0_3000_%05d.ts -master_pl_name temporary_segment_playlist_0.m3u8 -acodec copy -b:a 128k -ac 2 /home/vagrant/code/streaming-api/storage/framework/testing/disks/streamable_videos/9703f521-ec4b-428f-b756-b08946e726b8_0_3000.m3u8

  


  


• ffmpeg images list (text file) to video with overlay watermark

  27 mai 2021, par haseeb

  I have 250 images / day of 4000*3000 pixels in a text file.

  


  file '/home/user/camdata/nonseqdata.jpg'
file '/home/user/camdata/strangedata.jpg'


  


  i created mp4 video with this command

  


  ffmpeg -y -f concat -safe 0 -i ecam.001_20210525.txt -c:v libx264 -vf "scale=1280:720,fps=25,format=yuv420p" out.mp4


  


  Now i need to add watermark to video.(in same command)
closest example i found on web, trying to modify that and use in my case is like..

  


  ffmpeg -r 25 -f image2 -s 1280x720 -i ecam.001_20210525.txt -i wm.png -filter_complex "[0:v][1:v] overlay=0:0" -vcodec libx264 -crf 25  -pix_fmt yuv420p test_overlay.mp4
OR
ffmpeg -r 25 -f concat -safe 0 -s 1280x720 -i ecam.001_20210525.txt -i wm.png -filter_complex "[0:v]pad=width=mainw:height=mainh:x=0:y=0,[1:v] overlay=0:0" -c:v libx264  test_overlay.mp4


  


  BUT it error out to >> Decoder (codec none) not found for input stream #0:0
Q. how exactly to fix this.? i need output to be 720p or 1080p.?