Documentation:Streaming HowTo/Command Line Examples

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VLC Streaming HowTo

Introduction
Streaming, Muxers and Codecs

Main
Easy Streaming
Advanced Streaming Using the Command Line
Command Line Examples

VLM
VLM - Multiple Streaming and Video on Demand

Tutorials and examples
Receive and Save a Stream
Convert files to other formats
Stream a File
Stream a DVD
Stream a DVB Channel
Stream from Encoding Cards and Other Capture Devices
Stream from a DV Camcorder
Streaming for the iPhone

IPv6
Streaming over IPv6
View this alone

Examples for advanced use of VLC's stream output (transcoding, multiple streaming, etc...)

Transcoding

Transcode the input stream and send it to a multicast IP address with the associated SAP announce:

% vlc -vvv input_stream --sout
'#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128,deinterlace}:
rtp{mux=ts,dst=239.255.12.42,sdp=sap,name="TestStream"}' 


Display the input stream, transcode it and send it to a multicast IP address with the associated SAP announce:

% vlc -vvv input_stream --sout
#duplicate{dst=display,dst="transcode{vcodec=mp4v,acodec=mpga,vb=800,
ab=128,deinterlace}:rtp{mux=ts,dst=239.255.12.42,sdp=sap,name="TestStream"}"}' 

Transcode the input stream, display the transcoded stream and send it to a multicast IP address with the associated SAP announce:

% vlc -vvv input_stream --sout
'#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128,deinterlace}:
duplicate{dst=display,dst=rtp{mux=ts,dst=239.255.12.42,sdp=sap,name="TestStream"}}' 

To receive the input stream that is being multicasted above on a client:

vlc rtp://239.255.12.42

More complex transcoding example

Stream a SDI card to H.264 and AAC in TS on udp

% cvlc -vvv --live-caching 2000 decklink://
--decklink-audio-connection embedded --decklink-aspect-ratio 16:9 --decklink-mode hp50 
--sout-x264-preset slow --sout-x264-tune film --sout-transcode-threads 8 --no-sout-x264-interlaced
--sout-x264-keyint 50 --sout-x264-lookahead 100 --sout-x264-vbv-maxrate 6000 --sout-x264-vbv-bufsize 6000  
--sout '#transcode{vcodec=h264,vb=6000,acodec=mp4a,aenc=fdkaac,ab=256}:std{access=udp,mux=ts,dst=192.168.2.1:1234}'

Multiple streaming

Send a stream to a multicast IP address and a unicast IP address:

vlc -vvv input_stream
--sout '#duplicate{dst=rtp{mux=ts,dst=239.255.12.42,sdp=sap,name="TestStream"},dst=rtp{mux=ts,dst=192.168.1.2}}' 

Display the stream and send it to two unicast IP addresses:

vlc -vvv input_stream 
--sout '#duplicate{dst=display,dst=rtp{mux=ts,dst=192.168.1.12},dst=rtp{mux=ts,dst=192.168.1.42}}' 

Send parts of a multiple program input stream:

vlc -vvv multiple_program_input_stream
--sout'#duplicate{dst=rtp{mux=ts,dst=239.255.12.42},select="program=12345",dst=rtp{mux=ts,dst=239.255.12.43},select="video,program=1234-2345"}' 

This command sends the program of the input stream which id is 12345 to 239.255.12.42 and all video programs with id between 1234 and 2345 to 239.255.12.43.

Transcoding and multiple streaming

Transcode the input stream, display the transcoded stream and send it to a multicast IP address with the associated SAP announce and an unicast IP address:

% vlc -vvv input_stream --sout
'#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128,deinterlace}:
duplicate{dst=display,dst=rtp{mux=ts,dst=239.255.12.42,sdp=sap,name="TestStream"},
dst=rtp{mux=ts,dst=192.168.1.2}}' 

Display the input stream, transcode it and send it to two unicast IP addresses:

% vlc -vvv input_stream --sout  '#duplicate{dst=display,dst="transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:
duplicate{dst=rtp{mux=ts,dst=192.168.1.2},dst=rtp{mux=ts,dst=192.168.1.12}"}' 

Send the input stream to a multicast IP address and the transcoded stream to another multicast IP address with the associated SAP announces:

% vlc -vvv input_stream --sout
'#duplicate{dst=rtp{mux=ts,dst=239.255.1.2,sdp=sap,name="OriginalStream"},
dst="transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:
rtp{mux=ts,dst=239.255.1.3,sdp=sap,name="TranscodedStream"}"}' 

More complex multi-transcoding example

Take a SDI input, and transcode it twice, once in HD, and one in SD and send both on udp.

% cvlc -vv --live-caching 2000
--decklink-audio-connection embedded --decklink-aspect-ratio 16:9 --decklink-mode hp50 decklink:// 
--sout-x264-preset fast --sout-x264-tune film --sout-transcode-threads 24 --no-sout-x264-interlaced 
--sout-x264-keyint 50 --sout-x264-lookahead 100 --sout-x264-vbv-maxrate 4000 --sout-x264-vbv-bufsize 4000
--sout '#duplicate{dst="transcode{vcodec=h264,vb=6000,acodec=mp4a,aenc=fdkaac,ab=256}:std{access=udp,mux=ts,dst=192.168.1.2:4013}",
dst="transcode{height=576,vcodec=h264,vb=2000,acodec=mp4a,aenc=fdkaac,ab=128}:std{access=udp,mux=ts,dst=192.168.1.2:4014}"}'

Take a SDI input, and restreaming it once in raw and transcoding it for the second

% cvlc -vv --live-caching 2000
--decklink-audio-connection embedded --decklink-aspect-ratio 16:9 --decklink-mode hp50 decklink:// 
--sout-x264-preset fast --sout-x264-tune film --sout-transcode-threads 24 --no-sout-x264-interlaced 
--sout-x264-keyint 50 --sout-x264-lookahead 100 --sout-x264-vbv-maxrate 4000 --sout-x264-vbv-bufsize 4000
--sout '#duplicate{dst="transcode{vcodec=h264,vb=6000,acodec=mp4a,aenc=fdkaac,ab=256}:std{access=udp,mux=ts,dst=192.168.1.2:4013}",
dst="std{access=udp,mux=ts,dst=192.168.1.2:4014}"}'

HTTP streaming

Stream in HTTP:

  • on the server, run:
% vlc -vvv input_stream --sout '#standard{access=http,mux=ogg,dst=server.example.org:8080}' 
  • on the client(s), run:
% vlc http://server.example.org:8080

Transcode and stream in HTTP:

% vlc -vvv input_stream --sout '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:
standard{access=http,mux=ogg,dst=server.example.org:8080}' 

Recording a live video stream:

% vlc http://example.com/live.asf --sout="#duplicate{dst=std{access=file,mux=asf,
dst='C:\test\test.asf'},dst=nodisplay}" 

For example, if you want to stream an audio CD in Ogg/Vorbis over HTTP:

% vlc -vvv cdda:/dev/cdrom --sout '#transcode{acodec=vorb,ab=128}:standard{access=http,mux=ogg,dst=server.example.org:8080}' 

RTSP live streaming

Stream with RTSP and RTP:

  • Run on the server:
vlc -vvv input_stream --sout '#rtp{dst=192.168.0.12,port=1234,sdp=rtsp://server.example.org:8080/test.sdp}' 
  • Run on the client(s):
vlc rtsp://server.example.org:8080/test.sdp

RTSP on-demand streaming

See Documentation:Streaming HowTo/VLM.

MMS / MMSH streaming to Windows Media Player

% vlc -vvv input_stream --sout '#transcode{vcodec=DIV3,vb=256,scale=1,acodec=mp3,ab=32,
channels=2}:std{access=mmsh,mux=asfh,dst=:8080}' 

VLC media player can connect to this by using the following url: mmsh://server_ip_address:8080. Windows Media Player can connect to this by using the following url: mms://server_ip_address:8080.

Use the es module

Separate audio and video in two PS files:

% vlc -vvv input_stream --sout '#es{access=file,mux=ps,url_audio=audio-%c.%m,url_video=video-%c.%m}' 

Extract the audio track of the input stream to a TS file:

% vlc -vvv input_stream --sout '#es{access_audio=file,mux_audio=ts,url_audio=audio-%c.%m}' 

Stream in unicast the audio track on a port and the video track on another port (NOTE: This will not only work with VLC 0.8.6 or older - FIXME?):

  • on the server side:
% vlc -vvv input_stream --sout '#es{access=rtp,mux=ts,url_audio=192.168.1.2:1212,
url_video=192.168.1.2:1213}' 
  • on the client side:
    • to receive the audio:
% vlc udp://@:1212
    • to receive the video:
% vlc udp://@:1213

Stream in multicast the video and dump the audio in a file:

% vlc -vvv input_stream --sout '#es{access-video=udp,mux-video=ts,dst-video=239.255.12.42,
access-audio=file,mux-audio=ps,dst-audio=audio-%c.%m}' 

Note: You can also combine the es module with the other modules to set-up even more complex solution.

Keeping the stream open

% % vlc -vvv input_stream -sout-keep
-sout=#transcode{acodec=mp3}:duplicate{dst=display{delay=6000},
dst=gather:std{mux=mpeg1,dst=:8080/stream.mp3,access=http},select="novideo"} 

The basic transcoding is an mp3 stream from the file you select (if it is a video file, then the video is ignored). It is streamed via http to localhost:8080/stream.mp3

The combination of :sout-keep and dst=gather:std mean that the stream is kept open and subsequent items are played through the same stream.


This page is part of official VLC media player Documentation (User GuideStreaming HowToHacker GuideModules)
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.