Create a new STREAM_START event. The stream start event can only
travel downstream synchronized with the buffer flow. It is expected
to be the first event that is sent for a new stream.
Source elements, demuxers and other elements that create new streams
are supposed to send this event as the first event of a new stream. It
should not be sent after a flushing seek or in similar situations
and is used to mark the beginning of a new logical stream. Elements
combining multiple streams must ensure that this event is only forwarded
downstream once and not for every single input stream.
The stream_id should be a unique string that consists of the upstream
stream-id, / as separator and a unique stream-id for this specific
stream. A new stream-id should only be created for a stream if the upstream
stream is split into (potentially) multiple new streams, e.g. in a demuxer,
but not for every single element in the pipeline.
gst.pad.Pad.createStreamId or gst.pad.Pad.createStreamIdPrintf can be
used to create a stream-id. There are no particular semantics for the
stream-id, though it should be deterministic (to support stream matching)
and it might be used to order streams (besides any information conveyed by
stream flags).
Create a new STREAM_START event. The stream start event can only travel downstream synchronized with the buffer flow. It is expected to be the first event that is sent for a new stream.
Source elements, demuxers and other elements that create new streams are supposed to send this event as the first event of a new stream. It should not be sent after a flushing seek or in similar situations and is used to mark the beginning of a new logical stream. Elements combining multiple streams must ensure that this event is only forwarded downstream once and not for every single input stream.
The stream_id should be a unique string that consists of the upstream stream-id, / as separator and a unique stream-id for this specific stream. A new stream-id should only be created for a stream if the upstream stream is split into (potentially) multiple new streams, e.g. in a demuxer, but not for every single element in the pipeline. gst.pad.Pad.createStreamId or gst.pad.Pad.createStreamIdPrintf can be used to create a stream-id. There are no particular semantics for the stream-id, though it should be deterministic (to support stream matching) and it might be used to order streams (besides any information conveyed by stream flags).