Re: AVI to JPEG, Huffman informations missing?

Torsten Mohr <[email protected]> Sun, 30 Jan 2011 18:55:17 +0100
Newsgroups gmane.comp.video.mjpeg.devel
Message-ID <[email protected]>
Hello,

> > I wonder now where to get the necessary information when converting an
> > AVI to a sequence of JPEG files.  Are the missing information in the AVI
> > stream header or the AVI main header?  Are they in the chunk "strd"?
> 
> According to the chipspech of the zoran integrated jpeg codec the
> huffman tables are optional. The huffman tabels are loaded by the driver
> to the endocer.
> 
> 
> Have you checked if lavtrans addes a default huffman table, when you
> export a single image ? (-i Option)

No, i haven't tried this.  I came across a script that adds default Huffman 
tables to JPEGs.  With this addition, i can load the JPEGs in any graphics 
program and they show up fine.


Best regards,
Torsten.

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