gstreamer/docs/libs/GESTitleSource-children-props.md

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#### `alpha`
alpha of the stream
Value type: #gdouble
#### `color`
Color to use for text (big-endian ARGB).
Value type: #guint
See #timeoverlay:color
#### `font-desc`
Pango font description of font to be used for rendering. See documentation of
pango_font_description_from_string for syntax.
Value type: #gchararray
See #timeoverlay:font-desc
#### `foreground-color`
Foreground color to use (big-endian ARGB)
Value type: #guint
See #videotestsrc:foreground-color
#### `halignment`
Horizontal alignment of the text
Valid values:
- **left** (0) left
- **center** (1) center
- **right** (2) right
- **position** (4) Absolute position clamped to canvas
- **absolute** (5) Absolute position
See #timeoverlay:halignment
#### `height`
height of the source
Value type: #gint
#### `outline-color`
Color to use for outline the text (big-endian ARGB).
Value type: #guint
See #timeoverlay:outline-color
#### `pattern`
Type of test pattern to generate
Valid values:
- **SMPTE 100% color bars** (0) smpte
- **Random (television snow)** (1) snow
- **100% Black** (2) black
- **100% White** (3) white
- **Red** (4) red
- **Green** (5) green
- **Blue** (6) blue
- **Checkers 1px** (7) checkers-1
- **Checkers 2px** (8) checkers-2
- **Checkers 4px** (9) checkers-4
- **Checkers 8px** (10) checkers-8
- **Circular** (11) circular
- **Blink** (12) blink
- **SMPTE 75% color bars** (13) smpte75
- **Zone plate** (14) zone-plate
- **Gamut checkers** (15) gamut
- **Chroma zone plate** (16) chroma-zone-plate
- **Solid color** (17) solid-color
- **Moving ball** (18) ball
- **SMPTE 100% color bars** (19) smpte100
- **Bar** (20) bar
- **Pinwheel** (21) pinwheel
- **Spokes** (22) spokes
- **Gradient** (23) gradient
- **Colors** (24) colors
See #videotestsrc:pattern
#### `posx`
x position of the stream
Value type: #gint
#### `posy`
y position of the stream
Value type: #gint
#### `shaded-background`
Whether to shade the background under the text area
Value type: #gboolean
See #timeoverlay:shaded-background
#### `text`
Text to be display.
Value type: #gchararray
See #timeoverlay:text
#### `text-height`
Resulting height of font rendering
Value type: #guint
See #timeoverlay:text-height
#### `text-width`
Resulting width of font rendering
Value type: #guint
See #timeoverlay:text-width
#### `text-x`
Resulting X position of font rendering.
Value type: #gint
See #timeoverlay:text-x
#### `text-y`
Resulting X position of font rendering.
Value type: #gint
See #timeoverlay:text-y
#### `valignment`
Vertical alignment of the text
Valid values:
- **baseline** (0) baseline
- **bottom** (1) bottom
- **top** (2) top
- **position** (3) Absolute position clamped to canvas
- **center** (4) center
- **absolute** (5) Absolute position
See #timeoverlay:valignment
#### `video-direction`
Video direction: rotation and flipping
Valid values:
- **GST_VIDEO_ORIENTATION_IDENTITY** (0) identity
- **GST_VIDEO_ORIENTATION_90R** (1) 90r
- **GST_VIDEO_ORIENTATION_180** (2) 180
- **GST_VIDEO_ORIENTATION_90L** (3) 90l
- **GST_VIDEO_ORIENTATION_HORIZ** (4) horiz
- **GST_VIDEO_ORIENTATION_VERT** (5) vert
- **GST_VIDEO_ORIENTATION_UL_LR** (6) ul-lr
- **GST_VIDEO_ORIENTATION_UR_LL** (7) ur-ll
- **GST_VIDEO_ORIENTATION_AUTO** (8) auto
- **GST_VIDEO_ORIENTATION_CUSTOM** (9) custom
See #videoflip:video-direction
#### `width`
width of the source
Value type: #gint
#### `x-absolute`
Horizontal position when using absolute alignment
Value type: #gdouble
See #timeoverlay:x-absolute
#### `xpos`
Horizontal position when using clamped position alignment
Value type: #gdouble
See #timeoverlay:xpos
#### `y-absolute`
Vertical position when using absolute alignment
Value type: #gdouble
See #timeoverlay:y-absolute
#### `ypos`
Vertical position when using clamped position alignment
Value type: #gdouble
See #timeoverlay:ypos