最終更新:2018-06-15 (金) 12:30:44 (2509d)
非圧縮ビデオフォーマットディスクリプタ
Top / 非圧縮ビデオフォーマットディスクリプタ
Uncompressed Video Format Descriptor
フィールド
Offset Field Size Value Description 0 bLength? 1 Number Size of this descriptor in bytes: 27 1 bDescriptorType 1 Constant CS_INTERFACE (0x24) descriptor type 2 bDescriptorSubtype 1 Constant VS_FORMAT_UNCOMPRESSED descriptor subtype 3 bFormatIndex 1 Number Index of this format descriptor 4 bNumFrameDescriptors? 1 Number Number of frame descriptors following that correspond to this format 5 guidFormat 16 GUID Globally Unique Identifier used to identify stream-encoding format 21 bBitsPerPixel? 1 Number Number of bits per pixel used to specify color in the decoded video frame 22 bDefaultFrameIndex? 1 Number Optimum Frame Index (used to select resolution) for this stream 23 bAspectRatioX? 1 Number The X dimension of the picture aspect ratio. 24 bAspectRatioY? 1 Number The Y dimension of the picture aspect ratio. 25 bmInterlaceFlags? 1 Bitmap Specifies interlace information. 26 bCopyProtect? 1 Boolean Specifies whether duplication of the video stream is restricted
25:bmInterlaceFlags?
- Specifies interlace information. If the scanning mode control in the Camera Terminal is supported for this stream, this field shall reflect the field format used in interlaced mode.
- (Top field in PAL is field 1, top field in NTSC is field 2.):
D0 Interlaced stream or variable. 1 = Yes D1 Fields per frame. 0= 2 fields, 1 = 1 field D2 Field 1 first. 1 = Yes D3 Reserved D5..4 Field pattern 00 = Field 1 only
01 = Field 2 only
10 = Regular pattern of fields 1 and 2
11 = Random pattern of fields 1 and 2D7..6 Reserved. Do not use.
26:bCopyProtect?
- 0: No restrictions
- 1: Restrict duplication
