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Showing content from https://gstreamer.freedesktop.org/documentation/encoding/encodebin.html below:

encodebin

EncodeBin provides a bin for encoding/muxing various streams according to a specified GstEncodingProfile.

Based on the profile that was set (via the profile property), EncodeBin will internally select and configure the required elements (encoders, muxers, but also audio and video converters) so that you can provide it raw or pre-encoded streams of data in input and have your encoded/muxed/converted stream in output.

• Automatic encoder and muxer selection based on elements available on the system.

• Conversion of raw audio/video streams (scaling, framerate conversion, colorspace conversion, samplerate conversion) to conform to the profile output format.

• Variable number of streams. If the presence property for a stream encoding profile is 0, you can request any number of sink pads for it via the standard request pad gstreamer API or the request-pad action signal.

• Avoid reencoding (passthrough). If the input stream is already encoded and is compatible with what the GstEncodingProfile expects, then the stream won't be re-encoded but just passed through downstream to the muxer or the output.

• Mix pre-encoded and raw streams as input. In addition to the passthrough feature above, you can feed both raw audio/video AND already-encoded data to a pad. GstEncodeBaseBin will take care of passing through the compatible segments and re-encoding the segments of media that need encoding.

• Standard behaviour is to use a GstEncodingContainerProfile to have both encoding and muxing performed. But you can also provide a single stream profile (like GstEncodingAudioProfile) to only have the encoding done and handle the encoded output yourself.

• Audio imperfection corrections. Incoming audio streams can have non perfect timestamps (jitter), like the streams coming from ASF files. GstEncodeBaseBin will automatically fix those imperfections for you. See audio-jitter-tolerance for more details.

• Variable or Constant video framerate. If your GstEncodingVideoProfile has the variableframerate property deactivated (default), then the incoming raw video stream will be retimestampped in order to produce a constant framerate.

• Cross-boundary re-encoding. When feeding compatible pre-encoded streams that fall on segment boundaries, and for supported formats (right now only H263), the GOP will be decoded/reencoded when needed to produce an encoded output that fits exactly within the request GstSegment.

• Missing plugin support. If a GstElement is missing to encode/mux to the request profile formats, a missing-plugin GstMessage will be posted on the GstBus, allowing systems that support the missing-plugin system to offer the user a way to install the missing element.

Authors: – Edward Hervey

Classification: – Generic/Bin/Encoder

Rank – none

Plugin – encoding

Package – GStreamer Base Plug-ins

ANY

Presence – request

Direction – sink

Object type – GstPad

ANY

Presence – request

Direction – sink

Object type – GstPad

ANY

Presence – always

Direction – src

Object type – GstPad

ANY

Presence – request

Direction – sink

Object type – GstPad

g_signal_emit_by_name (param_0, "request-pad", arg0, &ret);

ret = param_0.emit ("request-pad", arg0)

let ret = param_0.emit ("request-pad", arg0);

Flags: Run Last / Action

g_signal_emit_by_name (param_0, "request-profile-pad", arg0, &ret);

ret = param_0.emit ("request-profile-pad", arg0)

let ret = param_0.emit ("request-profile-pad", arg0);

Flags: Run Last / Action

“audio-jitter-tolerance” guint64

Amount of timestamp jitter/imperfection to allow on audio streams before inserting/dropping samples (ns)

Flags : Read / Write

Default value : 20000000

“avoid-reencoding” gboolean

Whether to re-encode portions of compatible video streams that lay on segment boundaries

Flags : Read / Write

Default value : false

“flags” GstEncodeBinFlags *

Flags to control behaviour

Flags : Read / Write

Default value : (none)

“profile” GstEncodingProfile *

The GstEncodingProfile to use

Flags : Read / Write

“queue-buffers-max” guint

Max. number of buffers in the queue (0=disable)

Flags : Read / Write

Default value : 200

“queue-bytes-max” guint

Max. amount of data in the queue (bytes, 0=disable)

Flags : Read / Write

Default value : 10485760

“queue-time-max” guint64

Max. amount of data in the queue (in ns, 0=disable)

Flags : Read / Write

Default value : 1000000000

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