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• FFMPEG - Correct command line parameters to create a H.264 Streaming MP4 from a set of images

  5 janvier 2012, par Adam

  I have no problems viewing a video created by my current parameters in a HTML5 browser, Flash player, Windows Phone 7, Android Phone, etc. However, they won't display on iPhone or iPad. If I modify the video using Super and select "Enable Streaming" checkbox they work on iPhone and iPad suddenly. We are suspecting that my command line parameters are incorrect for enabling h.264 streaming and are instead generating a "progressive download" video.

  I'm pretty new to FFMPEG and don't understand a lot of the parameters. Can anyone help correct my existing parameters, or maybe provide the missing parameters, etc ?

  Thanks in advance.

  My current FFMPEG command line paramters are :

  ffmpeg.exe 
   -r 30 
   -threads 4 
   -f image2 
   -i .\frame%05d.jpg 
   -i audioFile  
   -acodec aac 
   -ab 128k 
   -ar 44100
   -vcodec h264 
   -crf 27 
   -coder 1 
   -flags +loop 
   -cmp +chroma 
   -partitions +parti4x4+partp8x8+partb8x8 
   -me hex 
   -subq 5 
   -me_range 16 
   -g 60 
   -keyint_min 25 
   -sc_threshold 40 
   -i_qfactor 0.71 
   -b_strategy 1 
   out.mp4
  

• Downloading and Uploading FFmpeg [closed]

  24 décembre 2011, par user705339

  I have a Windows OS for development, and a Linux server. I downloaded ffmpeg on my Windows, configured everything, and uploaded the application. The video conversion didn't work. After extensive hours figuring out the culprit, I realized that I downloaded the ffmpeg for Windows, and need to download the Linux version. That seemed harder than downloading the Windows version. I have scoured the net, and have come up with squat

  So, my 2 questions are :

  1. Is there an easy way to download/install the linux version of ffmpeg ? OR
  2. Is there an easier way to install it straight on the server ?

  If it matters, I also have a Linux OS development, but found it hard to install ffmpeg on it anyway.

  Update : After trying apt-get install ffmpeg on my Ubuntu Linux OS, it says it has already been installed. How do I locate what folder it's located ?

• Flv video time is shorter than normal when using flv segment

  7 janvier 2013, par David

  I am working on a project to use flv segments rather than a normal video clip. We use ffmpeg to split a mp4 file into several flv files with headers. The duration of each flv file is 5 second with 15 fps. Given a 10 minutes of video file, after split it, the osmf player only indicates 9:53 as timescale after all content played.

  The code is very simple, after download each flv segment, we use appendBytesAction(NetStreamAppendBytesAction.RESET_BEGIN) and appendBytes() to join all segments.

  Can anyone help me out ? Thanks a lot.