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Large AVI file size support #76

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zzyzyman opened this issue Apr 5, 2019 · 2 comments
Open

Large AVI file size support #76

zzyzyman opened this issue Apr 5, 2019 · 2 comments

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@zzyzyman
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zzyzyman commented Apr 5, 2019

Is there any plan afoot to support large AVI file sizes (via OpenDML) with the AVI Reader?

It would seem that files that tip the 32-bit limit of 4GB are truncated at 4GB by ImageJ.
@rasband
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rasband commented Apr 5, 2019

Michael Schmid is the AVI guru.

@zzyzyman
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zzyzyman commented Apr 5, 2019 •
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I found the issue, relating back to issue #56 -- I have extra-large AVI files from a variety of sources.

About two-thirds of them have an 'ix00' tag in them (correct) and the other third have an '00ix' tag in them (incorrect) for an internal index of frames. I modified the code quite simply so that AVIReader accepts either tag. In my case, my 'bad' files used a '00ix' tag for the small number of frames above the 4GB limit which is why they were being dropped.

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@rasband @zzyzyman