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Both sides previous revision Predchádzajúca revízia Nasledujúca revízia | Predchádzajúca revízia | ||
linux:rtl-sdr-streaming [2018/02/18 20:43] ma3x |
linux:rtl-sdr-streaming [2018/02/21 21:20] (aktuálne) ma3x |
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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> | <code> | ||
Riadok 7: | Riadok 10: | ||
</code> | </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/ | http://kmkeen.com/rtl-demod-guide/ | ||
https://medium.com/@luigifcruz/listening-live-fm-radio-over-the-network-with-rtl-sdr-2349c5abe878 | 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://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 |