Extract frames from a MP4 file

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I would like to extract frames from an MP4 file and again render a MP4 file after editing the frames.

Posted 11-Nov-14 10:32am

RAFAH SAMIH

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thank you SA ,
I'm working on project to encryption video mp4 by using vb.net
i want to extract only i frame from video stream , can you told me how to determine i-frame and how to extract it

Posted 12-Nov-14 4:17am

RAFAH SAMIH

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Sergey Alexandrovich Kryukov · Accepted Answer · 2014-11-11T11:49:00

The best code I know is FFmpeg or libavcodec: http://en.wikipedia.org/wiki/Ffmpeg[^],
http://ffmpeg.org/[^],
http://en.wikipedia.org/wiki/Libavcodec[^],
http://libav.org/[^].

In both cases, you can get free open-source utilities which can make nearly everything, including extracting video frames and assembling your video from frame pictures.

Now, how to use it programmatically in a .NET application? First, you can use the available utility by running it using System.Diagnostics.Process.Start:
http://msdn.microsoft.com/en-us/library/system.diagnostics.process.start.aspx[^].

If this is not good enough, you can wrap the library in a .NET assembly by yourself or find appropriate wrapper. Please see:
http://www.ffmpeg-csharp.com/[^],
http://sourceforge.net/projects/sharpffmpeg/[^],
http://vbffmpegwrapper.codeplex.com/[^].

After all, try to find some more: http://bit.ly/VpboUJ[^].

If you wish to work at such wrapper by yourself but don't know how, ask a question, I'll give you the basic ideas (using P/Invoke or C++/CLI "mixed-mode" project).

Good luck,

—SA