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--- linux:rtl-sdr-streaming [2018/02/18 20:43]
ma3x
+++ linux:rtl-sdr-streaming [2018/02/21 21:20]
ma3x
@@ Riadok 1: / Riadok 1: @@
-**RTL SDR streaming**
+====== RTL SDR streaming ======
-when is -M modulation set to fm, -s means width of modulation and it has to be the same as first -ar which measn sample rate of source.
+===== RTP stream =====
+When is -M modulation set to fm, -s means width of modulation and it has to be the same as first -ar which measn sample rate of source.
+RTP needs to by pointed to special sever machine where we can listen.
 <code>
@@ Riadok 7: / Riadok 10: @@
 </code>
-rtp usable for streaming inside of network.
+Put link to VLC playlist:
+<code>
+rtp://192.168.1.103:1234
+</code>
+pros:
+  * uncompressed
+cons:
+  * not tested via internet
+===== mp3 stream =====
+For mp3 streaming is required ffstream. Example of ffstream configuration (/etc/ffserver.conf):
+<code>
+# Port on which the server is listening. You must select a different
+# port from your standard HTTP web server if it is running on the same
+# computer.
+HTTPPort 8090
+# Address on which the server is bound. Only useful if you have
+# several network interfaces.
+HTTPBindAddress 0.0.0.0
+# Number of simultaneous HTTP connections that can be handled. It has
+# to be defined *before* the MaxClients parameter, since it defines the
+# MaxClients maximum limit.
+MaxHTTPConnections 2000
+# Number of simultaneous requests that can be handled. Since FFServer
+# is very fast, it is more likely that you will want to leave this high
+# and use MaxBandwidth, below.
+MaxClients 1000
+# This the maximum amount of kbit/sec that you are prepared to
+# consume when streaming to clients.
+MaxBandwidth 1000
+# Access log file (uses standard Apache log file format)
+# '-' is the standard output.
+CustomLog -
+##################################################################
+# Definition of the live feeds. Each live feed contains one video
+# and/or audio sequence coming from an ffmpeg encoder or another
+# ffserver. This sequence may be encoded simultaneously with several
+# codecs at several resolutions.
+<Feed feed1.ffm>
+# You must use 'ffmpeg' to send a live feed to ffserver. In this
+# example, you can type:
+#
+# ffmpeg http://localhost:8090/feed1.ffm
+# ffserver can also do time shifting. It means that it can stream any
+# previously recorded live stream. The request should contain:
+# "http://xxxx?date=[YYYY-MM-DDT][[HH:]MM:]SS[.m...]".You must specify
+# a path where the feed is stored on disk. You also specify the
+# maximum size of the feed, where zero means unlimited. Default:
+# File=/tmp/feed_name.ffm FileMaxSize=5M
+File /tmp/feed1.ffm
+FileMaxSize 200K
+# You could specify
+# ReadOnlyFile /saved/specialvideo.ffm
+# This marks the file as readonly and it will not be deleted or updated.
+# Specify launch in order to start ffmpeg automatically.
+# First ffmpeg must be defined with an appropriate path if needed,
+# after that options can follow, but avoid adding the http:// field
+#Launch ffmpeg
+# Only allow connections from localhost to the feed.
+ACL allow 127.0.0.1
+</Feed>
+# MP3 audio
+<Stream test.mp3>
+Feed feed1.ffm
+Format mp2
+AudioCodec libmp3lame
+AudioBitRate 512
+AudioChannels 1
+AudioSampleRate 44100
+NoVideo
+</Stream>
+# Ogg Vorbis audio
+#<Stream test.ogg>
+#Feed feed1.ffm
+#Metadata title "Stream title"
+#AudioBitRate 64
+#AudioChannels 2
+#AudioSampleRate 44100
+#NoVideo
+#</Stream>
+##################################################################
+# Special streams
+# Server status
+<Stream stat.html>
+Format status
+# Only allow local people to get the status
+ACL allow localhost
+ACL allow 192.168.0.0 192.168.255.255
+#FaviconURL http://pond1.gladstonefamily.net:8080/favicon.ico
+</Stream>
+# Redirect index.html to the appropriate site
+<Redirect index.html>
+URL http://www.ffmpeg.org/
+</Redirect>
+</code>
+Strat server:
+<code>
+ffserver
+</code>
+Start rtl_sdr and stream mp3 to feed1:
+<code>
+ rtl_fm -f 96.5M -M fm -s 170k -A std -l 0 | ffmpeg -f s16le -ac 1 -ar 170000 -i pipe:0 -acodec libmp3lame -ar 44100 http://localhost:8090/feed1.ffm
+</code>
+Put link to VLC playlist:
+<code>
+http://192.168.88.55:8090/test.mp3
+</code>
+pros:
+  * Should work via internet
+  * multi client access
+cons:
+  * compressed
 http://kmkeen.com/rtl-demod-guide/
 https://medium.com/@luigifcruz/listening-live-fm-radio-over-the-network-with-rtl-sdr-2349c5abe878
 https://lansley.com/2014/09/27/using-rtl_fm-and-ffmpeg-to-stream-radio-audio-over-network/
+https://ffmpeg.org/ffserver.html#Configuration-file-syntax
+https://www.ffmpeg.org/sample.html

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