[vlc-devel] [PATCH 2/4] jpeg: support mjpeg codec

Maxim Bublis b at codemonkey.ru
Wed Jan 29 15:39:55 CET 2014

As far as I know, there is no standard for Motion JPEG, and I do not know
how well it is supported by libjpeg.
I've found this Motion JPEG sample publicly available:
I've checked it against your patch, it doesn't work well. I have following
error from libjpeg:

[00007fe1350ba0b8] jpeg decoder error: Huffman table 0x00 was not defined

Seems to me this sample Motion JPEG doesn't have proper Huffman table
identifier in JFIF (or EXIF) data.
After googling on this error string, seems like it is common problem with
Motion JPEG streams from some webcams.

Maxim Bublis
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