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• avfilter/vf_dnn_processing.c : use swscale for uint8float32 convert

  20 février 2020, par Guo, Yejun

  avfilter/vf_dnn_processing.c : use swscale for uint8<->float32 convert
  Signed-off-by : Guo, Yejun <yejun.guo@intel.com>
  
  Reviewed-by : Pedro Arthur <bygrandao@gmail.com>
  

  • [DH] libavfilter/vf_dnn_processing.c

• React Electron ffmpeg-extract-frames build error

  28 mars 2020, par taylorallen0913

  I am using the npm module ffmpeg-extract-frames for splitting video frames. It works completely fine when I am testing the module in a vanilla node environment. However, when I import the module in my Electron React desktop app component, it gives me a error when building.

  This is how I am importing it :

  const extractFrames = require("ffmpeg-extract-frames");

  This is the error I am getting when building in my React Electron component :

  > expedition-hacks-project@0.1.0 build /home/taylorallen/Desktop/expedition-hacks-project
  
  > set "FLUENTFFMPEG_COV=false" && react-scripts build
  
  
  
  Creating an optimized production build...
  
  Failed to compile.
  
  
  
  ./node_modules/fluent-ffmpeg/index.js
  
  Cannot find module: './lib-cov/fluent-ffmpeg'. Make sure this package is installed.
  
  
  
  You can install this package by running: npm install ./lib-cov/fluent-ffmpeg.
  
  
  
  
  
  npm ERR! code ELIFECYCLE
  
  npm ERR! errno 1
  
  npm ERR! expedition-hacks-project@0.1.0 build: `set "FLUENTFFMPEG_COV=false" && react-scripts build`
  
  npm ERR! Exit status 1
  
  npm ERR! 
  
  npm ERR! Failed at the expedition-hacks-project@0.1.0 build script.
  
  npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
  
  
  
  npm ERR! A complete log of this run can be found in:
  
  npm ERR!     /home/taylorallen/.npm/_logs/2020-03-28T22_36_18_100Z-debug.log

  My package.json :

  {
  
    "name": "expedition-hacks-project",
  
    "version": "0.1.0",
  
    "private": true,
  
    "dependencies": {
  
      "@testing-library/jest-dom": "^4.2.4",
  
      "@testing-library/react": "^9.5.0",
  
      "@testing-library/user-event": "^7.2.1",
  
      "bootstrap": "^4.4.1",
  
      "bootstrap-fileinput": "^5.0.8",
  
      "ffmpeg-extract-frames": "^2.0.2",
  
      "fluent-ffmpeg": "^2.1.2",
  
      "jquery": "^3.4.1",
  
      "popper.js": "^1.16.1",
  
      "react": "^16.13.1",
  
      "react-bootstrap": "^1.0.0",
  
      "react-dom": "^16.13.1",
  
      "react-dropzone": "^10.2.2",
  
      "react-icons": "^3.9.0",
  
      "react-router-dom": "^5.1.2",
  
      "react-scripts": "3.4.1"
  
    },
  
    "homepage": "./",
  
    "main": "src/main.js",
  
    "scripts": {
  
      "start": "react-scripts start",
  
      "build": "set \"FLUENTFFMPEG_COV=false\" && react-scripts build",
  
      "test": "react-scripts test",
  
      "eject": "react-scripts eject",
  
      "electron": "electron ."
  
    },
  
    "eslintConfig": {
  
      "extends": "react-app"
  
    },
  
    "browserslist": {
  
      "production": [
  
        ">0.2%",
  
        "not dead",
  
        "not op_mini all"
  
      ],
  
      "development": [
  
        "last 1 chrome version",
  
        "last 1 firefox version",
  
        "last 1 safari version"
  
      ]
  
    },
  
    "devDependencies": {
  
      "electron": "^8.2.0",
  
      "electron-log": "^4.1.0",
  
      "react-app-rewired": "^2.1.5"
  
    }
  
  }

  I found a github issue https://github.com/fluent-ffmpeg/node-fluent-ffmpeg/issues/573#issuecomment-305408048 addressing this error, and I set FLUENTFFMPEG_COV=0 on in my build script

  My scripts :

    "scripts": {
  
      "start": "react-scripts start",
  
      "build": "set \"FLUENTFFMPEG_COV=false\" && react-scripts build",
  
      "test": "react-scripts test",
  
      "eject": "react-scripts eject",
  
      "electron": "electron ."
  
    },

  Setting the env variable seems to not do anything, I still get the same error.

• I want to print HLS files using ffmpeg in aws lambda (python)

  14 avril 2021, par 최우선

  I implemented it through the link(https://aws.amazon.com/ko/blogs/media/processing-user-generated-content-using-aws-lambda-and-ffmpeg/) here, and it works well.

  


  s3_source_bucket = event['Records'][0]['s3']['bucket']['name']
s3_source_key = event['Records'][0]['s3']['object']['key']

s3_source_basename = os.path.splitext(os.path.basename(s3_source_key))[0]
s3_destination_filename = s3_source_basename + ".m3u8"

s3_client = boto3.client('s3')
s3_source_signed_url = s3_client.generate_presigned_url('get_object',
    Params={'Bucket': s3_source_bucket, 'Key': s3_source_key},
    ExpiresIn=SIGNED_URL_TIMEOUT)


ffmpeg_cmd = "/opt/bin/ffmpeg -i \"" + s3_source_signed_url + "\" -codec: copy -start_number 0 -hls_time 10 -hls_list_size 0 -f hls -"
command1 = shlex.split(ffmpeg_cmd)
p1 = subprocess.run(command1, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

resp = s3_client.put_object(Body=p1.stdout, Bucket=S3_DESTINATION_BUCKET, Key=s3_destination_filename)


  


  However, the actual output through ffmpeg is multiple files. For example test.m3u8, test0.ts, test1.ts .....

  


  But when I print p1.stdout, it looks like multiple files (test.m3u8,test0.ts....) are merged into one file.

  


  Is there a way to get the actual output multiple files (test.m3u8,test0.ts......) from p1.stdout ? Please help.