MATLAB: How to compress a video

Image Processing Toolboxvideo compression

how to compress a video? i converted the video to frames. My next procedure is to reduce the frames and then to compress it. How to achieve those?

[Merged from duplicate]

my problem with video compression. assume we have 100 images, how can we compress and regenerate video from those images using matlab code.

your ideas will help me so much in my research.

Best Answer

hi,

If you already use "avifile" , then look at its properties :

On Windows: 'Indeo3''Indeo5''Cinepak''MSVC''RLE''None'

Related Solutions

MATLAB: Create a video from frames after compression

You cannot do the compression yourself and have MATLAB used the compressed version to write video. It is possible to ask VideoWriter to compress frames, but you pass it uncompressed frames and it does the compression automatically. You have to ask for compression; See https://www.mathworks.com/help/matlab/ref/videowriter.html#inputarg_profile

MATLAB: Am I unable to use a compression codec with AVIFILE using MATLAB 7.7 (R2008b) on Windows XP/Vista x64 machine

To resolve this issue in MATLAB 7.7 (R2008b), you may create an uncompressed video using

avifile(filename, 'Compression', 'None')

and then compressing the file using a third party tool like:

- Windows Movie Maker
- Windows Media 9 encoder
- VirtualDub (<http://www.virtualdub.org/>)
- Quicktime Pro

VirtualDub has a command line interface so it is possible to drive it using SYSTEM.

The second workaround is to specify a codec for a compression that is installed. The ones that are included with Windows XP 64 are

          *     IYUV — Intel YUV codec (c:\winnt\system32\iyuv_32.dll)
          *     MRLE — Microsoft RLE codec (c:\winnt\system32\msrle32.dll)
          *     MSVC — Microsoft Video 1 codec (c:\winnt\system32\msvidc32.dll)

For example, to use the Intel YUV codec, use the four-CC code:

aviobj = avifile('myvideo.avi', 'compression', 'IYUV');

Other codecs can be found at http://fourcc.org.

Note there are restrictions with some codecs. For example, some codecs can only be used with grayscale images.

Best Answer

Related Solutions

MATLAB: Create a video from frames after compression

MATLAB: Am I unable to use a compression codec with AVIFILE using MATLAB 7.7 (R2008b) on Windows XP/Vista x64 machine

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