[AVTCORE] [Technical Errata Reported] RFC2435 (4096)

RFC Errata System <rfc-editor@rfc-editor.org> Thu, 04 September 2014 15:27 UTC

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Subject: [AVTCORE] [Technical Errata Reported] RFC2435 (4096)
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The following errata report has been submitted for RFC2435,
"RTP Payload Format for JPEG-compressed Video".

--------------------------------------
You may review the report below and at:
http://www.rfc-editor.org/errata_search.php?rfc=2435&eid=4096

--------------------------------------
Type: Technical
Reported by: Julius Richard Friedman <juliusfriedman@gmail.com>

Section: Discussion

Original Text
-------------
 types  component samp. fact. samp. fact. table number
         +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
         |       |  1 (Y)  |     2     |     1     |     0     |
         | 0, 64 |  2 (U)  |     1     |     1     |     1     |
         |       |  3 (V)  |     1     |     1     |     1     |
         +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
         |       |  1 (Y)  |     2     |     2     |     0     |
         | 1, 65 |  2 (U)  |     1     |     1     |     1     |
         |       |  3 (V)  |     1     |     1     |     1     |
         +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+


Corrected Text
--------------
TO BE DETERMINED

Notes
-----
types  component samp. fact. samp. fact. table number
        FROM StartOf Frame (0xFFC0)

Read Nf - Number of image components in frame

if(Nf > 1) 

Read Each Component

          0 1 2 3 4 5 6 7 
         +-+-+-+-+-+-+-+-+
         |   H   |   V   |
         +-+-+-+-+-+-+-+-+

H: Horizontal sampling factor – Specifies the relationship between the component horizontal dimension
and maximum image dimension X (see Jpeg Spec A.1.1); also specifies the number of horizontal data units of component
Ci in each MCU, when more than one component is encoded in a scan.
Vi: Vertical sampling factor – Specifies the relationship between the component vertical dimension and
maximum image dimension Y (see Jpeg Spec A.1.1); also specifies the number of vertical data units of component Ci in
each MCU, when more than one component is encoded in a scan.
Tqi: Implied from the position in parsing

Instructions:
-------------
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--------------------------------------
RFC2435 (no draft string recorded)
--------------------------------------
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