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LEAD RTSP Source

The LEAD RTSP Source is a DirectShow filter for streaming data from an RTSP server. The data is streamed on a UDP port in RTP packets conforming to RFC 1889 and RFC 1890 in separate video and audio streams.

Currently, the following formats are supported:

This filter supports the standard IFileSourceFilter interface. Use the IFileSourceFilter::Load method to let the LEAD RTSP Source filter know where to read the data from. Please see the Microsoft documentation for this interface for more information.

The data can be streamed in Unicast mode over UDP (default), multicast over UDP (optional), interleaved over TCP or tunneling over HTTP mode. This is specified using the 'Transport' option through the string passed to IFileSourceFilter::Load.

See the RTSP Source URL Syntax topic for a discussion about the URLs used by RTSP servers. The topic also contains a table with sample URLs for servers that LEAD has tested, together with the video and audio compressions used by each server.

This filter can block for extended periods of time waiting for data. See the Aborting Loading from the RTSP, ONVIF, and UDP Source Filters topic for information on how to avoid blocking the application for extended periods of time and how to abort a pending wait.

Technical details for the filter are provided in the following table:

Component Description
Filter Interfaces IFileSourceFilter
ILMRTSPSrc
ILMSrcCallback
ILMRTSPSrcDataCallback
Interface ID IID_IFileSourceFilter
Input Media Types N/A
Output Media Types Type:
MEDIATYPE_Video
Subtypes:
MEDIASUBTYPE_H264
MEDIASUBTYPE_h265
MEDIASUBTYPE_MP4V
MEDIASUBTYPE_jpeg
Type:
MEDIATYPE_Audio
Subtypes:
MEDIASUBTYPE_mp4a
MEDIASUBTYPE_AMRCBR (format tag = 0x7A21)
KSDATAFORMAT_SUBTYPE_MULAW
MEDIASUBTYPE_KLVA
Filter CLSID CLSID_LMRTSPSrc
Property Page CLSID N/A
Executable LMRTSPSrc.dllDSKernel2.dll
Filter category CLSID_LegacyAmFilterCategory
Header ILMRTSPSrc.hILMSrcCallback.h

Platforms

Win32, x64.

See Also

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