AVIREAD unable to locate decompressor when H264 codec is present

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Richard
Richard 2012-3-15
Old file ran on R2009A/WIN 32 will not run R2009A/ WIN64 using 'AVS Video Remaker' converted file to H.246. Using video = uigetfile ('*.avi') and then info = aviinfo(video) info.VideoCompresion = H264
Using GSpot I confirm that the H264 codec is present.
However using aviread(video) I get error Unable to locate decompressor. I can display the file on several other programs including 'Windows Media Player'
What is the problem? How do I solve it. PS I have read all of the threads posted on this issue.

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Onomitra Ghosh
Onomitra Ghosh 2012-3-15
It may be the case the H.264 decoder present is a 32 bit version and not 64 bit one. Windows Media Player (and many other applications) on win64 is a 32 bit application and hence is able to play it fine.

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Walter Roberson
Walter Roberson 2012-3-15
H.264 was not supported until R2011b (I think it was.)
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Richard
Richard 2012-3-15
Thanks! That is what I am doing for a work around but do not like it. I read the file and convert it to wmv and then read it. So I am changing my program from avi read to mmreader. Nothing is simple any more.

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