Recherche avancée

Sur d’autres sites (8684)

• How to optimize FFMPEG/ Editing video ?

  6 mars 2016, par user6964

  I have the next commands for editing video but all the process take a long time. But with the same quality of the original video.

  //First cut original video
  
  exec("ffmpeg -i $video_path_main -ss $first_time1 -t $first_time2 -s 476x268 -r 10 -b 2000k -r 30 -g 100 -ar 22050 -ab 48000 -ac 1 -strict -2 $name_first");
  
  exec("ffmpeg -i $video_path_main -ss $second_time1 -t $second_time2 -s 476x268 -r 10 -b 2000k -r 30 -g 100 -ar 22050 -ab 48000 -ac 1 -strict -2 $name_second");
  
  
  
  $name_edit_second = uniqid() . '.mp4'; //Then editing the second video
  
  exec("ffmpeg -i $name_second -s 476x268 -r 10 -b 2000k -r 30 -g 100 -ar 22050 -ab 48000 -ac 1 -strict -2 -vf movie='" . $image_name . " [watermark]; [in] [watermark] overlay=308:43"."' $name_edit_second");
  
  
  
  //Then merge video file mp4 with Mencoder
  
  $name_total_1 = uniqid() . '.mp4';
  
  exec("mencoder -oac pcm -ovc xvid -vf scale -xvidencopts bitrate=460 -o $name_total_1 ".$name_first.' '.$name_edit_second);
  
  
  
  //Then convert the video to 3 formats that is necessary in my Player.
  
  $name_total = uniqid();
  
  
  
  //Of MP4 a FLV
  
  exec("ffmpeg -i $name_partial -f flv -s 476x268 -r 10 -b 2000k -r 30 -g 100 -ar 22050 -ab 48000 -ac 1 $name_total.flv");
  
  
  
  //Of MP4-Mencoder a MP4-FFMPEG
  
  exec("ffmpeg -i $name_partial -s 476x268 -r 10 -b 2000k -r 30 -g 100 -ar 22050 -ab 48000 -ac 1 -strict -2 $name_total.mp4"));
  
  
  
  //Of MP4 a WEBM
  
  exec("ffmpeg -i $name_partial -acodec libvorbis -s 476x268 -r 10 -b 2000k -r 30 -g 100 -ar 22050 -ab 48000 -ac 2 -f webm $name_total.webm");

  I don’t know if some of parameters take much time for all the process. Or if one of this command take much time.

  Note : Some videos have more than 2 parts of their original videos.

  ---

  UPDATE

  Maybe the parameter -theards 1 help me in NO take a lot of resources of the CPU. Also, I need to optimize the re-encoding because with only 8 users take the 100% of resources.

  I run FFMPEG in a other server that return the video edited to other server where stay my application.

  Sorry for my english.

• How to transcode avi or mov file to mpeg-ts with specific results ?

  15 juillet 2015, par Andy Do

  Can someone please help me convert a mov or mp4 file to mpeg-ts to look like the output below ?

  So far I have this :

  ffmpeg -i test_5.mp4 -c copy -bsf h264_mp4toannexb -b:a test_5.ts

  and want to replicate this :

  Format                                   : MPEG-TS
  
  File size                                : 1.48 GiB
  
  Duration                                 : 11mn 45s
  
  Overall bit rate mode                    : Constant
  
  Overall bit rate                         : 18.0 Mbps
  
  
  
  Video
  
  ID                                       : 481 (0x1E1)
  
  Menu ID                                  : 1 (0x1)
  
  Format                                   : MPEG Video
  
  Format version                           : Version 2
  
  Format profile                           : Main@Main
  
  Format settings, BVOP                    : Yes
  
  Format settings, Matrix                  : Custom
  
  Format settings, GOP                     : M=3, N=15
  
  Format settings, picture structure       : Frame
  
  Codec ID                                 : 2
  
  Duration                                 : 11mn 45s
  
  Bit rate                                 : 16.9 Mbps
  
  Maximum bit rate                         : 15.0 Mbps
  
  Width                                    : 720 pixels
  
  Height                                   : 480 pixels
  
  Display aspect ratio                     : 4:3
  
  Frame rate                               : 29.970 fps
  
  Standard                                 : NTSC
  
  Color space                              : YUV
  
  Chroma subsampling                       : 4:2:0
  
  Bit depth                                : 8 bits
  
  Scan type                                : Interlaced
  
  Scan order                               : Top Field First
  
  Compression mode                         : Lossy
  
  Bits/(Pixel*Frame)                       : 1.633
  
  Time code of first frame                 : 00:00:00;00
  
  Time code source                         : Group of pictures header
  
  Stream size                              : 1.39 GiB (94%)
  
  
  
  Audio
  
  ID                                       : 482 (0x1E2)
  
  Menu ID                                  : 1 (0x1)
  
  Format                                   : AC-3
  
  Format/Info                              : Audio Coding 3
  
  Mode extension                           : CM (complete main)
  
  Format settings, Endianness              : Big
  
  Codec ID                                 : 129
  
  Duration                                 : 11mn 45s
  
  Bit rate mode                            : Constant
  
  Bit rate                                 : 192 Kbps
  
  Channel(s)                               : 2 channels
  
  Channel positions                        : Front: L R
  
  Sampling rate                            : 48.0 KHz
  
  Bit depth                                : 16 bits
  
  Compression mode                         : Lossy
  
  Stream size                              : 16.2 MiB (1%)
  
  Language                                 : English

  Thanks if you can !

• Looking for a Sales Development Representative (Jobs at Piwik)

  20 mai 2015, par Piwik Core Team — Jobs

  This blog post is a job offer at Piwik PRO for a Sales Development Representative. Please share this job ad if you know anyone who may be interested.

  Job description

  As a sales development rep your job will be to work with our sales team to identify and nurture sales opportunities. You will be one of the initial building blocks of our US operation, especially as we begin to scale it, so there will be plenty of opportunities for advancement within the company.

  Responsibilities

  • Generate new sales opportunities
  • Help to develop and improve sales strategies
  • Set up discussions with senior executives and evaluate their business needs
  • Manage and nurture a pipeline of prospects until a given stage
  • Use marketing & sales CRM tools

  Requirements

  • Desire to learn and succeed in sales
  • 1+ years of related experience
  • Advanced research skills
  • Ability to write professional emails
  • Native English proficiency with excellent verbal communication skills
  • Passion for technology

  Compensation

  Salary (full-time) + performance-based incentives

  Location

  Remote

  About Piwik PRO

  At Piwik and Piwik PRO we develop the leading open source web analytics platform, used by over 1.1M websites worldwide and is currently ranked the 7th most used web analytics tool in the world. Our vision is to build the best open alternative to Google Universal Analytics.

  The Piwik platform collects, stores and processes a lot of information : hundreds of millions of data points each month. We create intuitive, simple and beautiful reports that delight our users.

  Apply online

  To apply for this position, please Apply online here. We look forward to receiving your applications !