| GStreamer Bad Plugins 0.10 Plugins Reference Manual | ||||
|---|---|---|---|---|
| Top | Description | Properties | ||||
"bufsize" gint : Read / Write "format" GstMplexFormat : Read / Write "mux-bitrate" gint : Read / Write "packets-per-pack" gint : Read / Write "sector-size" gint : Read / Write "system-headers" gboolean : Read / Write "vbr" gboolean : Read / Write
This element is an audio/video multiplexer for MPEG-1/2 video streams and (un)compressed audio streams such as AC3, MPEG layer I/II/III. It is based on the mjpegtools library. Documentation on creating MPEG videos in general can be found in the MJPEG Howto and the man-page of the mplex tool documents the properties of this element, which are shared with the mplex tool.
1 |
gst-launch -v videotestsrc num-buffers=1000 ! mpeg2enc ! mplex ! filesink location=videotestsrc.mpg |
If several streams are being multiplexed, there should (as usual) be a queue in each stream, and due to mplex' buffering the capacities of these may have to be set to a few times the default settings to prevent the pipeline stalling.
typedef struct {
GstElement parent;
/* pads */
GSList *pads;
GstPad *srcpad;
guint num_apads, num_vpads;
/* options wrapper */
GstMplexJob *job;
/* lock for syncing */
GMutex *tlock;
/* with TLOCK */
/* muxer writer generated eos */
gboolean eos;
/* flowreturn obtained by muxer task */
GstFlowReturn srcresult;
} GstMplex;
"bufsize" property"bufsize" gint : Read / Write
Target decoders video buffer size (kB) [default determined by format if not explicitly set].
Allowed values: [20,4000]
Default value: 46
"format" property "format" GstMplexFormat : Read / Write
Encoding profile format.
Default value: Generic MPEG-1
"mux-bitrate" property"mux-bitrate" gint : Read / Write
Bitrate of output stream in kbps (0 = autodetect).
Allowed values: [0,15360]
Default value: 0
"packets-per-pack" property"packets-per-pack" gint : Read / Write
Number of packets per pack for generic formats.
Allowed values: [1,100]
Default value: 1
"sector-size" property"sector-size" gint : Read / Write
Specify sector size in bytes for generic formats.
Allowed values: [256,16384]
Default value: 2048
"system-headers" property"system-headers" gboolean : Read / Write
Create system header in every pack for generic formats.
Default value: FALSE
"vbr" property"vbr" gboolean : Read / Write
Whether the input video stream is variable bitrate.
Default value: FALSE