Subject: [AVTCORE] [Technical Errata Reported] RFC2435 (4094)

From: RFC Errata System <[email-masked]>
Date: Thu, 4 Sep 2014 07:33:52 -0700 (PDT)

The following errata report has been submitted for RFC2435,
"RTP Payload Format for JPEG-compressed Video".

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You may review the report below and at:
http://www.rfc-editor.org/errata_search.php?rfc=2435&eid=4094

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Type: Technical
Reported by: Julius Richard Friedman <[email-masked]>

Section: Appendix A

Original Text
-------------
/*
 * Table K.1 from JPEG spec.
 */
static const int jpeg_luma_quantizer[64] = {
        16, 11, 10, 16, 24, 40, 51, 61,
        12, 12, 14, 19, 26, 58, 60, 55,
        14, 13, 16, 24, 40, 57, 69, 56,
        14, 17, 22, 29, 51, 87, 80, 62,
        18, 22, 37, 56, 68, 109, 103, 77,
        24, 35, 55, 64, 81, 104, 113, 92,
        49, 64, 78, 87, 103, 121, 120, 101,
        72, 92, 95, 98, 112, 100, 103, 99
};

/*
 * Table K.2 from JPEG spec.
 */
static const int jpeg_chroma_quantizer[64] = {
        17, 18, 24, 47, 99, 99, 99, 99,
        18, 21, 26, 66, 99, 99, 99, 99,
        24, 26, 56, 99, 99, 99, 99, 99,
        47, 66, 99, 99, 99, 99, 99, 99,
        99, 99, 99, 99, 99, 99, 99, 99,
        99, 99, 99, 99, 99, 99, 99, 99,
        99, 99, 99, 99, 99, 99, 99, 99,
        99, 99, 99, 99, 99, 99, 99, 99
};

Corrected Text
--------------
/*
 * Table K.1 from JPEG spec.
 */
static const int jpeg_luma_quantizer[64] = {
           16, 11, 12, 14, 12, 10, 16, 14,
           13, 14, 18, 17, 16, 19, 24, 40,
           26, 24, 22, 22, 24, 49, 35, 37,
           29, 40, 58, 51, 61, 60, 57, 51,
           56, 55, 64, 72, 92, 78, 64, 68,
           87, 69, 55, 56, 80, 109, 81, 87,
           95, 98, 103, 104, 103, 62, 77, 113,
           121, 112, 100, 120, 92, 101, 103, 99,
};

/*
 * Table K.2 from JPEG spec.
 */
static const int jpeg_chroma_quantizer[64] = {
           17, 18, 18, 24, 21, 24, 47, 26,
           26, 47, 99, 66, 56, 66, 99, 99,
           99, 99, 99, 99, 99, 99, 99, 99,
           99, 99, 99, 99, 99, 99, 99, 99,
           99, 99, 99, 99, 99, 99, 99, 99,
           99, 99, 99, 99, 99, 99, 99, 99,
           99, 99, 99, 99, 99, 99, 99, 99,
           99, 99, 99, 99, 99, 99, 99, 99
};

Notes
-----
Luma and Chroma was not in Zig Zag order and Luma energy has been de-saturated.

Instructions:
-------------
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RFC2435 (no draft string recorded)
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Title               : RTP Payload Format for JPEG-compressed Video
Publication Date    : October 1998
Author(s)           : L. Berc, W. Fenner, R. Frederick, S. McCanne, P. Stewart
Category            : PROPOSED STANDARD
Source              : Audio/Video Transport
Area                : Real-time Applications and Infrastructure
Stream              : IETF
Verifying Party     : IESG