WebRTC/RTP Server: Technical Specs

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This page is a copy of the original page on the AVObjects' web site and can also be viewed here.

Filter properties

Filter Interfaces IBaseFilter, IAMFilterMiscFlags, IMediaSeeking, IPersistStream, ISpecifyPropertyPages, IAVOWRtpServer
Input Pin Media Types AVC/H264:
  • MEDIATYPE_Video
  • MEDIASUBTYPE_H264, MEDIASUBTYPE_AVC1, MEDIASUBTYPE_H264ByteStream
  • FORMAT_MPEG2Video, FORMAT_VideoInfo, FORMAT_VideoInfo2 
MEDIASUBTYPE_H264ByteStream = 8D2D71CB-243F-45E3-B2D8-5FD7967EC09B
ITU-T Rec. H.264 (03/2005), Annex.B: Byte stream format
Used in MainConcept H.264 splitter and MainConcept MPEG-2 Demultiplexer for H264 in TS

VP8 ( Fourcc = VP80):

  • MEDIATYPE_Video / Fourcc subtype / FORMAT_VideoInfo2 or FORMAT_VideoInfo

VP9 ( Fourcc = VP90):

  • MEDIATYPE_Video / Fourcc subtype / FORMAT_VideoInfo2 or FORMAT_VideoInfo

Opus:

  • MEDIATYPE_Audio / MEDIASUBTYPE_OPUS / FORMAT_WaveFormatEx 
MEDIASUBTYPE_OPUS = {B940AE21-195E-4CE6-B324-E703AE733AEC}
pbFormat is WAVEFORMATEXTENSIBLE
WAVEFORMATEX::wFormatTag = WAVE_FORMAT_EXTENSIBLE
WAVEFORMATEX::nChannels = 1 or 2
WAVEFORMATEX::wBitsPerSample = 16
WAVEFORMATEXTENSIBLE::SubFormat = KSDATAFORMAT_SUBTYPE_OPUS = {1DAD5025-02FA-4330-9A60-EC0121E3CE3D}

L16 (PCM):

  • MEDIATYPE_Audio / MEDIASUBTYPE_PCM / FORMAT_WaveFormatEx 
pbFormat is WAVEFORMATEX
WAVEFORMATEX::wFormatTag = WAVE_FORMAT_PCM
WAVEFORMATEX::nSamplesPerSec = 44100
WAVEFORMATEX::nChannels = 1 or 2
WAVEFORMATEX::wBitsPerSample = 16

A-Law (PCMA):

  • MEDIATYPE_Audio / KSDATAFORMAT_SUBTYPE_ALAW / FORMAT_WaveFormatEx 
pbFormat is WAVEFORMATEX
WAVEFORMATEX::wFormatTag = WAVE_FORMAT_ALAW
WAVEFORMATEX::nSamplesPerSec = 8000
WAVEFORMATEX::nChannels = 1
WAVEFORMATEX::wBitsPerSample = 8

U-Law (PCMU):

  • MEDIATYPE_Audio / KSDATAFORMAT_SUBTYPE_MULAW / FORMAT_WaveFormatEx 
pbFormat is WAVEFORMATEX
WAVEFORMATEX::wFormatTag = WAVE_FORMAT_MULAW
WAVEFORMATEX::nSamplesPerSec = 8000
WAVEFORMATEX::nChannels = 1
WAVEFORMATEX::wBitsPerSample = 8
Input Pin Interfaces IPin
Merit MERIT_NORMAL
Filter Categories DirectShow filters, AVObjects filters
Filter Name AVObjects WRtpServer
Executable WRtpServer.dll
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