Re: how to encode an.avi readable by ImageJ

Posted by Michael Schmid on Feb 17, 2010; 10:38am
URL: http://imagej.273.s1.nabble.com/how-to-encode-an-avi-readable-by-ImageJ-tp3689341p3689342.html

Hi Everyone,

is the problem of "missing Huffman tables" a frequent one?

If there are many reports about such problems it might be worthwhile  
to add code to fix this problem, but I don't know common JPEG-
encoded .AVI files (aka M-JPEG encoded) without Huffman tables are.  
In principle, such a fix would be possible (it would not help to read  
MPEG-encoded files, however; MPEG is a rather complex encoding).

For those interested in details: (M-)JPEG encoded video files do not  
need to supply Huffman tables in the individual frames, but many (M-)
JPEG-encoded video files include them nonetheless. Currently ImageJ  
can only decode those (M-)JPEG-encoded video files that include  
Huffman tables.


Michael
________________________________________________________________

On 5 Feb 2010, at 17:23, Yann BOURSIAC wrote:

> Hi all,
>
> ImageJ has the possibility to open .avi files. However, when I try,  
> I get the error message "cannot open video files missing Huffman  
> tables".
> So my question is: how can I encode my files (coming from a DVD  
> recorder) into an avi that will be readable by ImageJ?
> I tried some codecs from VLC or virtualdub but never succeeded.
>
> Alternatively, the final aim is to measure the diameter of a round  
> cell along time. Our setup include a microscope camera linked to a  
> DVD recorder. I would like to use an equivalent of the ruler tool  
> from ImageJ. Do you know any possibility or any other alternative?
>
> Thank You
>
> Yann