[MPlayer-dev-eng] MPlayer and QuickTime fourcc 'raw '

[Mats Peterson]

MPlayer seems to naively assume that a QuickTime file (or Matroska file 
with V_QUICKTIME, for that matter) with the video fourcc 'raw ' 
(uncompressed RGB) contains 24-bit RGB triplets. The QuickTime File 
Format Specification states the following regarding "Uncompressed RGB":

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* For depths of 1, 2, 4, and 8, the values stored are indexes into the 
color table specified in the color table ID field.

* For a depth of 16, the pixels are stored as 5-5-5 RGB values with the 
high bit of each 16-bit integer set to 0.

* For a depth of 24, the pixels are stored packed together in RGB order.

* For a depth of 32, the pixels are stored with an 8-bit alpha channel, 
followed by 8-bit RGB components."

----

Below are two files with the 'raw ' fourcc from Apple's QuickTime Beta 
CD. These are *not* 24-bit RGB, but 1-bit and 8-bit files. FFplay 
handles this correctly, but MPlayer currently does not. When playing the 
8-bit sample file below for example, it plays without video, and it 
constantly spits out "Frame too small! (19200<76800) Wrong format?" 
lines which is clearly an indication that it thinks the data is 24-bit 
RGB when it is in fact 8-bit.

1-bit sample:
https://drive.google.com/open?id=0B3_pEBoLs0fabm83dG5YLUsybDA

8-bit sample:
https://drive.google.com/open?id=0B3_pEBoLs0fadHF2U1JFZ3NSdjQ

Mats

-- 
Mats Peterson
http://matsp888.no-ip.org/~mats/