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minor corrections

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Original commit message from CVS:
minor corrections
This commit is contained in:
David Schleef 2003-06-30 05:13:26 +00:00
parent 4efcdf17bb
commit 491741f564
1 changed files with 9 additions and 3 deletions
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12
docs/random/mimetypes
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@ -28,6 +28,9 @@ GstCaps *caps = GST_CAPS_NEW("video_mpeg_type",
Obviously, mimetypes and their corresponding properties are of major
importance in GStreamer for uniquely identifying media streams.
Official MIME media types are assigned by the IANA. Current
assignments are at http://www.iana.org/assignments/media-types/.
2) The problems
---------------
Some streams may have mimetypes or GstCaps that do not fully describe
@ -57,7 +60,7 @@ There are several types of media streams. The most important distinction
will be container formats, audio codecs and video codecs. Container
formats are bytestreams that contain one or more substreams inside it,
and don't provide any direct media data itself. Examples are Quicktime,
AVI or MPEG (bytestream). They mostly contain of a set of headers that
AVI or MPEG System Stream. They mostly contain of a set of headers that
define the media stream(s) that is packed inside the container and the
media data itself.
Video codecs and audio codecs describe encoded audio or video data.
@ -116,6 +119,7 @@ Preface - (optional) properties for all video formats:
mimetype: video/x-raw-yuv
properties: 'format' = 'XXXX' (fourcc)
known fourccs: YUY2, I420, Y41P, YVYU, UYVY, etc.
properties 'width' and 'height' are required
Note: some raw video formats have implicit alignment rules. We should
discuss this more.
@ -147,6 +151,7 @@ Preface - (optional) properties for all video formats:
'red_mask' = bitmask (0x..) (INT) <- red pixel mask
'green_mask' = bitmask (0x..) (INT) <- green pixel mask
'blue_mask' = bitmask (0x..) (INT) <- blue pixel mask
properties 'width' and 'height' are required
'bpp' is the number of bits of memory used for each pixel. 'depth'
is the color depth.
@ -216,7 +221,8 @@ Preface - (optional) properties for all video formats:
known fourccs: H263, i263, M263, x263, VDOW, VIVO
9 - RealVideo (Real)
mimetype: video/x-real
mimetype: video/x-pn-realvideo
known fourccs: RV10, RV20, RV30
10 - Digital Video (DV)
mimetype: video/dv
@ -327,7 +333,7 @@ Preface - (optional) properties for all audio formats:
refer to technical documentation.
13 - RealAudio (Real)
mimetype: audio/x-real
mimetype: audio/x-pn-realaudio
properties: 'bitrate' = 14400/28800 (INT)
14 - DV Audio