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• RTMP streaming not working with fluent-ffmpeg and gl

  15 avril 2023, par Smile

  I'm trying to send opengl rendering results to rtmp using gl and fluent-ffmpeg packages.
  
The render function writes opengl output to glBuf.
  
And the render function is called about 60 times per second.
  
And it calls ffmpeg with that glBuf as input.

  


  import ffmpeg from "fluent-ffmpeg";
import GL from "gl";
import { env } from "./env";
import { PassThrough } from "stream";

const WIDTH = 1920;
const HEIGHT = 1080;
const gl = GL(WIDTH, HEIGHT);

const glBuf = new PassThrough();
const render = () => {
  gl.viewport(0, 0, WIDTH, HEIGHT);
  gl.clearColor(0, 0, 0, 1);
  gl.clear(gl.COLOR_BUFFER_BIT);

  const pixels = new Uint8Array(WIDTH * HEIGHT * 4);
  gl.readPixels(0, 0, WIDTH, HEIGHT, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
  glBuf.write(pixels);
};

const FRAMES = 10;
setInterval(() => {
  for (let i = 0; i < FRAMES; i++) {
    render();
  }
}, FRAMES * 1.1 * (1000 / 60));

ffmpeg()
  .input(glBuf)
  .inputFormat("rawvideo")
  .inputOptions([`-video_size ${WIDTH}x${HEIGHT}`, "-pix_fmt rgba"])
  .inputFPS(60)
  .outputFormat("flv")
  .outputOptions([
    "-c:v libx264",
    "-preset veryfast",
    "-maxrate 3000k",
    "-bufsize 6000k",
    "-pix_fmt yuv420p",
    "-g 60",
    "-c:a aac",
    "-b:a 160k",
    "-ac 2",
  ])
  .on("error", (err) => {
    console.error(err);
  })
  .output(`${env.stream_url}/${env.stream_key}`)
  .run();


  


  However, stream health shows No data. That is, the data is ignored.
  
Not works

  


  So I modified the code to save flv file. It works then.

  


  import ffmpeg from "fluent-ffmpeg";
import GL from "gl";
import { env } from "./env";
import { PassThrough } from "stream";

const WIDTH = 1920;
const HEIGHT = 1080;
const gl = GL(WIDTH, HEIGHT);

const glBuf = new PassThrough();
const render = () => {
  gl.viewport(0, 0, WIDTH, HEIGHT);
  gl.clearColor(0, 0, 0, 1);
  gl.clear(gl.COLOR_BUFFER_BIT);

  const pixels = new Uint8Array(WIDTH * HEIGHT * 4);
  gl.readPixels(0, 0, WIDTH, HEIGHT, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
  glBuf.write(pixels);
};

const FRAMES = 10;
const renderInterval = setInterval(() => {
  for (let i = 0; i < FRAMES; i++) {
    render();
  }
}, FRAMES * 1.1 * (1000 / 60));

setTimeout(() => {
  clearInterval(renderInterval);
  glBuf.end();
  console.log("done!");
}, 3000);

ffmpeg()
  .input(glBuf)
  .inputFormat("rawvideo")
  .inputOptions([`-video_size ${WIDTH}x${HEIGHT}`, "-pix_fmt rgba"])
  .inputFPS(60)
  .outputFormat("flv")
  .outputOptions([
    "-c:v libx264",
    "-preset veryfast",
    "-maxrate 3000k",
    "-bufsize 6000k",
    "-pix_fmt yuv420p",
    "-g 60",
    "-c:a aac",
    "-b:a 160k",
    "-ac 2",
  ])
  .on("error", (err) => {
    console.error(err);
  })
  .output(`output.flv`)
  .run();



  


  It works then

  


  Why doesn't first code work ?

  


• How to debug GitHub Action failure

  9 décembre 2022, par Meltemi

  Just yesterday a stable GitHub Action (CI) started failing rather cryptically and I've run out of tools to debug it.

  


  All I can think of is our BUNDLE_ACCESS_TOKEN went bad somehow but I didn't set that up. It's an Action secret under Repository Secrets that are not visible in GitHub UI. How can I test to see if it's valid ?

  


  Or maybe it's something else ?!? "Bad credentials" is vague...

  


  Here's the meat of the action we're trying to run :

  


  #my_tests.yml
jobs:
  my-test:
    runs-on: ubuntu-latest
    services:
      postgres:
        image: postgres:13.4
        env:
          POSTGRES_USERNAME: postgres
          POSTGRES_PASSWORD: postgres
          POSTGRES_DB: myapp_test
        ports:
          - 5432:5432
        options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
    env:
      RAILS_ENV: test
      POSTGRES_HOST: localhost
      POSTGRES_USERNAME: pg
      POSTGRES_PASSWORD: pg
      GITHUB_TOKEN: ${{ secrets.BUNDLE_ACCESS_TOKEN }}
      BUNDLE_GITHUB__COM: x-access-token:${{ secrets.BUNDLE_ACCESS_TOKEN }}
      CUCUMBER_FORMAT: progress
    steps:
      - uses: actions/checkout@v2
      - uses: FedericoCarboni/setup-ffmpeg@v1
      ...


  


  And with debug turned on here's the Failure (line 20) from GitHub Actions :

  


  Run FedericoCarboni/setup-ffmpeg@v1

1 ------- ##[debug]Evaluating condition for step: 'Run FedericoCarboni/setup-ffmpeg@v1'
2 ##[debug]Evaluating: success()
3 ##[debug]Evaluating success:
4 ##[debug]=> true
5 ##[debug]Result: true
6 ##[debug]Starting: Run FedericoCarboni/setup-ffmpeg@v1
7 ##[debug]Loading inputs
8 ##[debug]Loading env
9 Run FedericoCarboni/setup-ffmpeg@v1
10   with:
11   env:
12     RAILS_ENV: test
13     POSTGRES_HOST: localhost
14     POSTGRES_USERNAME: pg
15     POSTGRES_PASSWORD: pg
16     GITHUB_TOKEN: ***
17     BUNDLE_GITHUB__COM: x-access-token:***
19     CUCUMBER_FORMAT: progress
20 Error: Bad credentials
21 ##[debug]Node Action run completed with exit code 1
22 ##[debug]Finishing: Run FedericoCarboni/setup-ffmpeg@v1


  


  Thanks for any help.

  


• FFmpeg Loop Streaming

  21 septembre 2022, par Dan

  I'm trying to run a stream on YouTube with a video that loops 24/7, using FFmpeg 4.4 from a server with Ubuntu 22, it works but I'm loosing the "Live" red light on YouTube, and here is the message from the "Stream health" tab :

  


  "YouTube is not currently receiving data for this stream. If you believe this is incorrect, ensure you’re sending a stream and that it is configured with the correct stream key."

  


  Here's the script I made :

  


  
VBR="1500k" 
FPS="24" 
QUAL="superfast" 

YOUTUBE_URL="rtmp://a.rtmp.youtube.com/live2" 
SOURCE="/home/ubuntu/Video.mp4" 
KEY="mykey" 
ffmpeg \
-stream_loop -1 -i "$SOURCE" -deinterlace \
-vcodec libx264 -pix_fmt yuv420p -preset $QUAL -r $FPS -g $(($FPS * 2)) -b:v $VBR \
-acodec libmp3lame -ar 44100 -threads 6 -qscale 3 -b:a 712000 -bufsize 512k \
-f flv "$YOUTUBE_URL/$KEY"


  


  Any help would be appreciated.
Thanks.