eflvmux

eflvmux is an extension to the flvmux, capable of multiplexing multiple tracks and signalling advanced codecs in FOURCC format as per Enhanced RTMP (V2) specification.

Note: The audio pad can only send the data in legacy FLV format and the audio_%u can only send it in the Enhanced FLV format. So it is important to specify the corresponding pad template while linking pads using gst_element_link_pads or _parse_launch. Failing to specify the pad template can result in sending the data in the wrong FLV format.

Example launch line streaming 2 audio tracks to Twitch

gst-launch-1.0 videotestsrc pattern=ball ! 'video/x-raw,format=I420,width=1280,height=720,framerate=30/1' ! \
   timeoverlay ! videoconvert ! x264enc tune=zerolatency key-int-max=30 ! h264parse ! eflvmux name=mux ! \
   rtmp2sink location="rtmp://ingest.global-contribute.live-video.net/app/$STREAM_KEY" \
   audiotestsrc wave=ticks ! fdkaacenc ! mux.audio \
   audiotestsrc !  fdkaacenc ! mux.audio_1

Hierarchy

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstAggregator
                    ╰──GstFlvMux
                        ╰──eflvmux

Implemented interfaces

Factory details

Authors: – Taruntej Kanakamalla

Classification: – Codec/Muxer

Rank – primary

Plugin – flv

Package – GStreamer Good Plug-ins

Pad Templates

audio

audio/x-adpcm:
         layout: swf
       channels: { (int)1, (int)2 }
           rate: { (int)5512, (int)11025, (int)22050, (int)44100 }
audio/mpeg:
    mpegversion: 1
          layer: 3
       channels: { (int)1, (int)2 }
           rate: { (int)5512, (int)8000, (int)11025, (int)22050, (int)44100 }
         parsed: true
audio/mpeg:
    mpegversion: { (int)4, (int)2 }
  stream-format: raw
audio/x-nellymoser:
       channels: { (int)1, (int)2 }
           rate: { (int)5512, (int)8000, (int)11025, (int)16000, (int)22050, (int)44100 }
audio/x-raw:
         format: { U8, S16LE }
         layout: interleaved
       channels: { (int)1, (int)2 }
           rate: { (int)5512, (int)11025, (int)22050, (int)44100 }
audio/x-alaw:
       channels: { (int)1, (int)2 }
           rate: 8000
audio/x-mulaw:
       channels: { (int)1, (int)2 }
           rate: 8000
audio/x-speex:
       channels: 1
           rate: 16000

Presence – request

Direction – sink

Object type – GstFlvMuxPad

audio_%u

audio/mpeg:
    mpegversion: 1
          layer: 3
       channels: { (int)1, (int)2 }
           rate: { (int)5512, (int)8000, (int)11025, (int)22050, (int)44100 }
         parsed: true
audio/mpeg:
    mpegversion: { (int)4, (int)2 }
  stream-format: raw

Presence – request

Direction – sink

Object type – GstFlvMuxPad

src

video/x-flv:

Presence – always

Direction – src

Object type – GstAggregatorPad

video

video/x-flash-video:
video/x-flash-screen:
video/x-vp6-flash:
video/x-vp6-alpha:
video/x-h264:
  stream-format: avc

Presence – request

Direction – sink

Object type – GstFlvMuxPad

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