Stream specification

Overview

Encoded Media appliance streams can be delivered via RTSP unicast, UDP multicast or directed UDP unicast streams. You can test these streams in third party products such as the desktop and mobile app versions of VLC media player.

Testing streams in VLC media player

Windows and macOS

  1. In the VLC media player desktop application, open the Media menu and choose Network Stream
  2. For a unicast stream, paste the RTSP link directly e.g.
    rtsp://192.168.5.123/live/AUX1
    	
  3. For a multicast stream, paste the multicast IP and port number e.g.
    udp://@226.176.238.142:10000
    	

iPhone and Android

  1. In the VLC media player app, tap the VLC cone in the top corner and choose Network Stream
  2. For a unicast stream, provide the RTSP link directly e.g.
    rtsp://192.168.5.123/live/AUX1
    	

Stream nuts and bolts

MPEG transport stream (MPEG-TS) is raw UDP. Packet size is 1,316 bytes (1,358 bytes including UDP and IP headers). TTL is settable, with the system default being either 15 (platform 3 and later) or 5 (platform 2 and earlier).

Freeview SD

Video

ID : 501 (0x1F5)
Menu ID : 4352 (0x1100)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings, BVOP : Yes
Format settings, Matrix : Custom
Format settings, GOP : M=3, N=36
Codec ID : 2
Duration : 24mn 58s
Bit rate mode : Variable
Bit rate : 1 991 Kbps
Maximum bit rate : 15.0 Mbps
Width : 704 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Active Format Description : Letterbox 16:9 image, with alternative 14:9 center
Frame rate : 25.000 fps
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.196
Stream size : 356 MiB (89%)

Audio

ID : 502 (0x1F6)
Menu ID : 4352 (0x1100)
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
Mode : Joint stereo
Codec ID : 3
Duration : 24mn 58s
Bit rate mode : Constant
Bit rate : 128 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Compression mode : Lossy
Delay relative to video : -970ms
Stream size : 22.9 MiB (6%)
Language : English

Freeview HD

Video

ID : 101 (0x65)
Menu ID : 40960 (0xA000)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.0
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : 27
Duration : 1mn 49s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Standard : Component
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Scan order : Top Field First
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

Audio

ID : 102 (0x66)
Menu ID : 40960 (0xA000)
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Muxing mode : LATM
Codec ID : 17
Duration : 1mn 50s
Bit rate mode : Variable
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Delay relative to video : -833ms
Language : English

Freesat SD

Video

ID : 2362 (0x93A)
Menu ID : 50882 (0xC6C2)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings, BVOP : Yes
Format settings, Matrix : Custom
Format settings, GOP : M=3, N=12
Codec ID : 2
Duration : 3mn 1s
Bit rate mode : Variable
Bit rate : 3 753 Kbps
Maximum bit rate : 15.0 Mbps
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.362
Time code of first frame : 00:32:59:12
Time code source : Group of pictures header
Stream size : 81.2 MiB (90%)

Audio

ID : 2363 (0x93B)
Menu ID : 50882 (0xC6C2)
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
Mode : Joint stereo
Mode extension : MS Stereo
Codec ID : 4
Duration : 3mn 1s
Bit rate mode : Constant
Bit rate : 192 Kbps
Maximum bit rate : 31.7 Mbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Compression mode : Lossy
Delay relative to video : -496ms
Stream size : 4.16 MiB (5%)
Language : English

Freesat HD

Video

ID : 5300 (0x14B4)
Menu ID : 6943 (0x1B1F)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.0
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : 27
Duration : 2mn 40s
Bit rate : 6 019 Kbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Standard : Component
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Bits/(Pixel*Frame) : 0.116
Stream size : 115 MiB (92%)
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

Audio

ID : 5301 (0x14B5)
Menu ID : 6943 (0x1B1F)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Codec ID : 6
Duration : 2mn 40s
Bit rate mode : Constant
Bit rate : 192 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Compression mode : Lossy
Delay relative to video : -1s 128ms
Stream size : 3.67 MiB (3%)
Language : English

Encoded SD

Video

ID : 104 (0x68)
Menu ID : 1000 (0x3E8)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings, BVOP : Yes
Format settings, Matrix : Custom
Format settings, GOP : M=3, N=15
Codec ID : 2
Duration : 11s 800ms
Bit rate : 3 414 Kbps
Maximum bit rate : 3 200 Kbps
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Standard : PAL
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.329
Time code of first frame : 00:12:05:10
Time code source : Group of pictures header
Stream size : 4.80 MiB (86%)

Audio

ID : 103 (0x67)
Menu ID : 1000 (0x3E8)
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
Codec ID : 4
Duration : 11s 976ms
Bit rate mode : Constant
Bit rate : 320 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Compression mode : Lossy
Delay relative to video : -494ms
Stream size : 468 KiB (8%)

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