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GetID3 - Bloc informations de fichiers
9 avril 2013, par
Mis à jour : Mai 2013
Langue : français
Type : Image
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GetID3 - Boutons supplémentaires
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Mis à jour : Avril 2013
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Librairies et logiciels spécifiques aux médias
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Sur d’autres sites (4287)
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VLC - Could someone assist me into improving latency in streaming to web based app ?
19 janvier 2017, par zyeekI have been looking for solutions in which I can stream an IP camera’s stream to
HTML 5
. Currently as is it doesn’t supportRTSP
so easily.I am trying to be able to view the camera’s stream as live as possible. I was hoping someone could help me achieve that. I have been playing with it to get something workable, but at the moment I get a 5s delay stream. It is smooth, but wish to get it hopefully within <1-2s delay if possible.
My current setup goes from taking my IP camera’s stream in
RTSP
and converting it to awebm
and streaming it to a url, which then I plan on using that to put else where in a web app.What I would like to achieve
Use a protocol that has low latency with audio was well. Webm was used as test, but I can’t seem to get other commands to get the proper stream to be going.
I would like to use DASH, but from reading
FFMPEG
currently doesn’t support it. I was thinking maybeRTMP
would be good enough for now, being both low latency andHTTP 5
compatible. I am just unable to figure out how to getFFMPEG
to transcode theRTSP
toRTMP
.SETUP :
I am using ffserver and ffmpeg. Overall scope : trying to pull IP camera stream and put it on a web app.
Framework I am use is Meteor JS. So, I am trying to few plugins or outside complex setups as I want to be able to deploy this Meteor app on mobile devices as well. So, I want to stay within the boundaries of what
HTML 5
can support.My current ffserver setup is
ffserver.conf
(this was taking from bunch of different place :HTTPPort 8090 # Port to bind the server to
HTTPBindAddress 0.0.0.0
MaxHTTPConnections 2000
MaxClients 1000
MaxBandwidth 10000 # Maximum bandwidth per client
# set this high enough to exceed stream bitrate
CustomLog -
<feed>
File /tmp/feed.ffm
FileMaxSize 100K
ACL allow 127.0.0.1
</feed>
<stream>
Format webm
Feed feed.ffm
NoAudio
VideoCodec libvpx
VideoFrameRate 24
VideoBitRate 1024
VideoSize 480x270
VideoBufferSize 1024
AVOptionVideo flags +global_header
StartSendOnKey
</stream>
<stream> # Server status URL
Format status
# Only allow local people to get the status
ACL allow localhost
</stream>
<redirect> # Just an URL redirect for index
# Redirect index.html to the appropriate site
URL url/
</redirect>Works normally :
ffserver version 3.2.2 Copyright (c) 2000-2016 the FFmpeg developers
built with Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.1.2/include/openjpeg-2.1 --enable-nonfree --enable-vda
libavutil 55. 34.100 / 55. 34.100
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.100 / 57. 56.100
libavdevice 57. 1.100 / 57. 1.100
libavfilter 6. 65.100 / 6. 65.100
libavresample 3. 1. 0 / 3. 1. 0
libswscale 4. 2.100 / 4. 2.100
libswresample 2. 3.100 / 2. 3.100
libpostproc 54. 1.100 / 54. 1.100
/etc/ffserver.conf:27: Setting default value for video bit rate tolerance = 256000. Use NoDefaults to disable it.
/etc/ffserver.conf:27: Setting default value for video rate control equation = tex^qComp. Use NoDefaults to disable it.
/etc/ffserver.conf:27: Setting default value for video max rate = 2048000. Use NoDefaults to disable it.
Wed Jan 18 17:04:30 2017 FFserver started.Now I give life to the feed with
ffmpeg
. Command I use :ffmpeg -vsync 2 -i rtsp://admin:password@192.168.2.165:88/videoMain -map 0 http://localhost:8090/feed.ffm
which gives the result :
ffmpeg version 3.2.2 Copyright (c) 2000-2016 the FFmpeg developers
built with Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.1.2/include/openjpeg-2.1 --enable-nonfree --enable-vda
libavutil 55. 34.100 / 55. 34.100
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.100 / 57. 56.100
libavdevice 57. 1.100 / 57. 1.100
libavfilter 6. 65.100 / 6. 65.100
libavresample 3. 1. 0 / 3. 1. 0
libswscale 4. 2.100 / 4. 2.100
libswresample 2. 3.100 / 2. 3.100
libpostproc 54. 1.100 / 54. 1.100
Guessed Channel Layout for Input Stream #0.1 : mono
Input #0, rtsp, from 'rtsp://admin:password@192.168.2.165:88/videoMain':
Metadata:
title : IP Camera Video
comment : videoMain
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: h264 (Main), yuv420p(progressive), 1280x720, 90k tbr, 90k tbn, 180k tbc
Stream #0:1: Audio: pcm_mulaw, 8000 Hz, mono, s16, 64 kb/s
[libvpx @ 0x7fd58184a600] v1.6.0
Output #0, ffm, to 'http://localhost:8090/feed.ffm':
Metadata:
title : IP Camera Video
comment : videoMain
creation_time : now
encoder : Lavf57.56.100
Stream #0:0: Video: vp8 (libvpx), yuv420p, 480x270, q=-1--1, 1024 kb/s, 90k fps, 1000k tbn, 24 tbc
Metadata:
encoder : Lavc57.64.101 libvpx
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 8388608 vbv_delay: -1
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> vp8 (libvpx))
Press [q] to stop, [?] for help
[rtsp @ 0x7fd581000000] max delay reached. need to consume packet
[rtsp @ 0x7fd581000000] RTP: missed 5 packets
[h264 @ 0x7fd5818ae800] Increasing reorder buffer to 1
frame= 139 fps= 18 q=0.0 Lsize= 440kB time=00:00:09.25 bitrate= 389.7kbits/s speed=1.19x
video:429kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.663893% -
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