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Properties
| gchar * | font-desc | Write |
| GstTextRenderHAlign | halignment | Read / Write |
| GstTextRenderLineAlign | line-alignment | Read / Write |
| GstTextRenderVAlign | valignment | Read / Write |
| gint | xpad | Read / Write |
| gint | ypad | Read / Write |
Types and Values
| struct | GstTextRender |
| enum | GstTextRenderHAlign |
| enum | GstTextRenderLineAlign |
| enum | GstTextRenderVAlign |
Description
This plugin renders text received on the text sink pad to a video buffer (retaining the alpha channel), so it can later be overlayed on top of video streams using other elements.
The text can contain newline characters. (FIXME: What about text wrapping? It does not make sense in this context)
Example launch lines
1 |
gst-launch-1.0 -v filesrc location=subtitles.srt ! subparse ! textrender ! videoconvert ! autovideosink |
Synopsis
Element Information
plugin |
pango |
author |
David Schleef <ds@schleef.org>, GStreamer maintainers <gstreamer-devel@lists.freedesktop.org> |
class |
Filter/Editor/Video |
Element Pads
name |
sink |
direction |
sink |
presence |
always |
details |
text/x-raw, format=(string){ pango-markup, utf8 } |
name |
src |
direction |
source |
presence |
always |
details |
video/x-raw, format=(string){ AYUV, ARGB }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ] |
Types and Values
Property Details
The “font-desc” property
“font-desc” gchar *
Pango font description of font to be used for rendering. See documentation of pango_font_description_from_string for syntax.
Flags: Write
Default value: ""
The “halignment” property
“halignment” GstTextRenderHAlign
Horizontal alignment of the text.
Flags: Read / Write
Default value: center
The “line-alignment” property
“line-alignment” GstTextRenderLineAlign
Alignment of text lines relative to each other.
Flags: Read / Write
Default value: center
The “valignment” property
“valignment” GstTextRenderVAlign
Vertical alignment of the text.
Flags: Read / Write
Default value: baseline
The “xpad” property
“xpad” gint
Horizontal paddding when using left/right alignment.
Flags: Read / Write
Allowed values: >= 0
Default value: 25
The “ypad” property
“ypad” gint
Vertical padding when using top/bottom alignment.
Flags: Read / Write
Allowed values: >= 0
Default value: 25