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• JM H264 Reference Software quality drop [migrated]

  1er novembre 2012, par Pete

  I've just started messing around with the latest JM 18.4 tool for a bit but after I encode a sample yuv file the video comes out poor.(Everything is on default, I did a clean compile just to make sure I didn't change anything by accident) It turns gray at some frames and looks distorted. I know this isn't the program for encoding videos but I'm using it for my project because of other factors.

  I tried playing the .264 file directly with ffplay and tried using ffmpeg to convert it into an .mp4 format video, both resulted in the same quality. If anyone could enlighten my carelessness I would be greatly appreciative.

  -din

• How to install this nodejs Application

  15 février 2016, par metalbug

  https://github.com/hexator/live4chan

  i have VMware run ubuntu-14.10-server and 15.10-server

  sudo apt-get install -y 
  
       git mongodb imagemagick libcairo2-dev libjpeg8-dev 
  
       libpango1.0-dev libgif-dev build-essential g++ ffmpeg curl

  install success

  git clone https://github.com/hexator/live4chan.git; 
  
  cd live4chan; 
  
  npm install

  but have errors

  test@ubuntu:~/live4chan$ npm start
  
  
  
      LiveChan@0.0.1 start /home/test/live4chan
  
      node lib/index.js
  
  
  
  Missing certificate or private key
  
  Running with insecure server
  
  info - socket.io started
  
  connect.limit() will be removed in connect 3.0
  
  connect.multipart() will be removed in connect 3.0
  
  visit https://github.com/senchalabs/connect/wiki/Connect-3.0 for alternatives
  
  connect.limit() will be removed in connect 3.0
  
  
  
  module.js:340
  
  throw err;
  
  ^
  
  Error: Cannot find module 'carrier'
  
  at Function.Module._resolveFilename (module.js:338:15)
  
  at Function.Module._load (module.js:280:25)
  
  at Module.require (module.js:364:17)
  
  at require (module.js:380:17)
  
  at Object. (/home/test/ircd.js/lib/server.js:24:15)
  
  at Module._compile (module.js:456:26)
  
  at Object.Module._extensions..js (module.js:474:10)
  
  at Module.load (module.js:356:32)
  
  at Function.Module._load (module.js:312:12)
  
  at Module.require (module.js:364:17)
  
  
  
  npm ERR! Linux 4.2.0-16-generic
  
  npm ERR! argv "node" "/usr/local/bin/npm" "start"
  
  npm ERR! node v0.10.42
  
  npm ERR! npm v3.7.2
  
  npm ERR! code ELIFECYCLE
  
  npm ERR! LiveChan@0.0.1 start: node lib/index.js
  
  npm ERR! Exit status 8
  
  npm ERR!
  
  npm ERR! Failed at the LiveChan@0.0.1 start script 'node lib/index.js'.
  
  npm ERR! Make sure you have the latest version of node.js and npm installed.
  
  npm ERR! If you do, this is most likely a problem with the LiveChan package,
  
  npm ERR! not with npm itself.
  
  npm ERR! Tell the author that this fails on your system:
  
  npm ERR! node lib/index.js
  
  npm ERR! You can get information on how to open an issue for this project with:
  
  npm ERR! npm bugs LiveChan
  
  npm ERR! Or if that isn't available, you can get their info via:
  
  npm ERR! npm owner ls LiveChan
  
  npm ERR! There is likely additional logging output above.
  
  
  
  npm ERR! Please include the following file with any support request:
  
  npm ERR! /home/test/live4chan/npm-debug.log
  
  
  
  ==========================================================
  
  /home/test/live4chan/npm-debug.log
  
  
  
  0 info it worked if it ends with ok
  
  1 verbose cli [ 'node', '/usr/local/bin/npm', 'start' ]
  
  2 info using npm@3.7.2
  
  3 info using node@v0.10.42
  
  4 verbose run-script [ 'prestart', 'start', 'poststart' ]
  
  5 info lifecycle LiveChan@0.0.1~prestart: LiveChan@0.0.1
  
  6 silly lifecycle LiveChan@0.0.1~prestart: no script for prestart, continuing
  
  7 info lifecycle LiveChan@0.0.1~start: LiveChan@0.0.1
  
  8 verbose lifecycle LiveChan@0.0.1~start: unsafe-perm in lifecycle true
  
  9 verbose lifecycle LiveChan@0.0.1~start: PATH: /usr/local/lib/node_modules/npm/bin/node-gyp-bin:/home/test/live4chan/node_modules/.bin:/usr/local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
  
  10 verbose lifecycle LiveChan@0.0.1~start: CWD: /home/test/live4chan
  
  11 silly lifecycle LiveChan@0.0.1~start: Args: [ '-c', 'node lib/index.js' ]
  
  12 silly lifecycle LiveChan@0.0.1~start: Returned: code: 8 signal: null
  
  13 info lifecycle LiveChan@0.0.1~start: Failed to exec start script
  
  14 verbose stack Error: LiveChan@0.0.1 start: node lib/index.js
  
  14 verbose stack Exit status 8
  
  14 verbose stack at EventEmitter. (/usr/local/lib/node_modules/npm/lib/utils/lifecycle.js:239:16)
  
  14 verbose stack at EventEmitter.emit (events.js:98:17)
  
  14 verbose stack at ChildProcess. (/usr/local/lib/node_modules/npm/lib/utils/spawn.js:24:14)
  
  14 verbose stack at ChildProcess.emit (events.js:98:17)
  
  14 verbose stack at maybeClose (child_process.js:766:16)
  
  14 verbose stack at Process.ChildProcess._handle.onexit (child_process.js:833:5)
  
  15 verbose pkgid LiveChan@0.0.1
  
  16 verbose cwd /home/test/live4chan
  
  17 error Linux 4.2.0-16-generic
  
  18 error argv "node" "/usr/local/bin/npm" "start"
  
  19 error node v0.10.42
  
  20 error npm v3.7.2
  
  21 error code ELIFECYCLE
  
  22 error LiveChan@0.0.1 start: node lib/index.js
  
  22 error Exit status 8
  
  23 error Failed at the LiveChan@0.0.1 start script 'node lib/index.js'.
  
  23 error Make sure you have the latest version of node.js and npm installed.
  
  23 error If you do, this is most likely a problem with the LiveChan package,
  
  23 error not with npm itself.
  
  23 error Tell the author that this fails on your system:
  
  23 error node lib/index.js
  
  23 error You can get information on how to open an issue for this project with:
  
  23 error npm bugs LiveChan
  
  23 error Or if that isn't available, you can get their info via:
  
  23 error npm owner ls LiveChan
  
  23 error There is likely additional logging output above.
  
  24 verbose exit [ 1, true ]

  I tried this :
  npm install carrier

  Or an error.

  and install Other versions of nodejs

  wget http://nodejs.org/dist/latest-v0.10.x/node-v0.10.42.tar.gz
  
  wget http://nodejs.org/dist/latest-v0.12.x/node-v0.12.10.tar.gz 
  
  wget http://nodejs.org/dist/latest-v4.x/node-v4.3.0.tar.gz
  
  wget http://nodejs.org/dist/latest-v5.x/node-v5.6.0.tar.gz
  
  tar zxvf node-v4.3.0.tar.gz
  
  cd node-v4.3.0
  
  ./configure 
  
  make
  
  sudo make install

  Nothing happened

  please help me
  Or you can tell me how to install, detailed, thank you very much !

• ffmpeg, -shortest does not work when overlaying PNG sequence on a still

  27 août 2014, par Aviator Addis

  How do you make this work ?

  ffmpeg -loop 1 -i emma.jpg -r 29.97 -i source\source_%%05d.png -filter_complex overlay -r 29.97 -pix_fmt yuv420p -y -shortest sample_source.mp4

  It seems the -shortest option does not work and it just keeps encoding with no stop on the last frame. I’m using the latest static 8-27-2014 64 bit build on windows 8.1 If I assigned -t value it will stop at the specified length, but I need it’s output length set to whatever the sequence might happen to be (at it will vary).