From
https://msdn.microsoft.com/en-us/library/windows/desktop/dd318229%28v=vs.85%29.aspx:
"If biCompression equals BI_RGB and the bitmap uses 8 bpp or less, the
bitmap has a color table immediatelly following the BITMAPINFOHEADER
structure. The color table consists of an array of RGBQUAD values. The
size of the array is given by the biClrUsed member. If biClrUsed is
zero, the array contains the maximum number of colors for the given
bitdepth; that is, 2^biBitCount colors."
Nothing about "monochrome" here. Unfortunately, pal8 to monow conversion
seems a bit flaky, but that's another story.
Mats
--
Mats Peterson
http://matsp888.no-ip.org/~mats/
>From 92939adb957e928d154fd2ca778e2d097f02380c Mon Sep 17 00:00:00 2001
From: Mats Peterson <matsp...@yahoo.com>
Date: Thu, 28 Jan 2016 05:43:54 +0100
Subject: [PATCH 5/5] lavc/rawdec: Use AV_PIX_FMT_PAL8 for raw 1 bpp video in AVI
---
libavcodec/raw.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/raw.c b/libavcodec/raw.c
index 888f554..4f7417a 100644
--- a/libavcodec/raw.c
+++ b/libavcodec/raw.c
@@ -282,7 +282,7 @@ unsigned int avcodec_pix_fmt_to_codec_tag(enum AVPixelFormat fmt)
}
const PixelFormatTag avpriv_pix_fmt_bps_avi[] = {
- { AV_PIX_FMT_MONOWHITE, 1 },
+ { AV_PIX_FMT_PAL8, 1 },
{ AV_PIX_FMT_PAL8, 2 },
{ AV_PIX_FMT_PAL8, 4 },
{ AV_PIX_FMT_PAL8, 8 },
--
1.7.10.4
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