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The Slip - Artworks
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
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Sur d’autres sites (7959)
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Reduce HLS latency from +30 seconds
4 juin 2014, par RickUbuntu 12.04
nginx 1.2.4
avconv -version
avconv version 0.8.10-4:0.8.10-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav developers
built on Feb 6 2014 20:56:59 with gcc 4.6.3
avconv 0.8.10-4:0.8.10-0ubuntu0.12.04.1
libavutil 51. 22. 2 / 51. 22. 2
libavcodec 53. 35. 0 / 53. 35. 0
libavformat 53. 21. 1 / 53. 21. 1
libavdevice 53. 2. 0 / 53. 2. 0
libavfilter 2. 15. 0 / 2. 15. 0
libswscale 2. 1. 0 / 2. 1. 0
libpostproc 52. 0. 0 / 52. 0. 0I’m using avconv and nginx to create an HLS stream but right now my latency is regularly well over 30 seconds. After much reading I am aware that HLS has built in latency and that 10s is expected and even preferred but 30s seems quite extreme.
I’ve seen a lot of discussion on the nginx-rtmp google group, this thread in particular had a lot of suggestions. I have attempted to reduce solve my issue by reducing the
hls_fragment
and thehls_playlist_length
but they haven’t had a significant effect.nginx.conf :
#user nobody;
worker_processes 1;
error_log logs/error.log debug;
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
sendfile on;
keepalive_timeout 65;
server {
listen 8888;
server_name localhost;
add_header 'Access-Control-Allow-Origin' "*";
location /hls {
types {
application/vnd.apple.mpegurl m3u8;
video/mp2t ts;
}
root /tmp;
}
# rtmp stat
location /stat {
rtmp_stat all;
rtmp_stat_stylesheet stat.xsl;
}
location /stat.xsl {
# you can move stat.xsl to a different location
root /usr/build/nginx-rtmp-module;
}
# rtmp control
location /control {
rtmp_control all;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
}
}
rtmp {
server {
listen 1935;
ping 30s;
notify_method get;
application myapp {
live on;
hls on;
hls_path /tmp/hls;
hls_base_url http://x.x.x.x:8888/hls/;
hls_sync 2ms;
hls_fragment 2s;
#hls_variant _low BANDWIDTH=160000;
#hls_variant _mid BANDWIDTH=320000;
#hls_variant _hi BANDWIDTH=640000;
}
}
}avconv command :
avconv -r 30 -y -f image2pipe -codec:v mjpeg -i - -f flv -codec:v libx264 -profile:v baseline -preset ultrafast -tune zerolatency -an -f flv rtmp://127.0.0.1:1935/myapp/mystream
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FFMEG dumping a RTSP streaming works on Windows but not in Ubuntu
8 août 2016, par cuentafalsa7I have a camera with a
RTSP
server. When I try to save the streaming, usingFFMPEG
in Windows works ; in Ubuntu,FFMPEG
it doesn’t.The command, in Windows is :
ffmpeg.exe -i "rtsp://192.168.1.10:1236/?videoapi=mc&h264=1000-20-1280-960" -r 20 test.mp4
In Linux :
ffmpeg -i "rtsp://192.168.1.10:1236/?videoapi=mc&h264=1000-20-1280-960" -r 20 test.mp4
The output in Linux is :
$ ffmpeg -i "rtsp://192.168.1.10:1236/?videoapi=mr&h264=1000-20-1280-960" -r 20 test.mp4
ffmpeg version 2.8.6-1ubuntu2 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.3.1 (Ubuntu 5.3.1-11ubuntu1) 20160311
configuration: --prefix=/usr --extra-version=1ubuntu2 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 60.100 / 56. 60.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 40.101 / 5. 40.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
[rtsp @ 0x1f18340] UDP timeout, retrying with TCP
[rtsp @ 0x1f18340] Nonmatching transport in server reply
[rtsp @ 0x1f18340] Could not find codec parameters for stream 0 (Video: h264, none): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
rtsp://192.168.1.10:1236/?videoapi=mr&h264=1000-20-1280-960: could not find codec parameters
Input #0, rtsp, from 'rtsp://192.168.1.10:1236/?videoapi=mr&h264=1000-20-1280-960':
Metadata:
title : Unnamed
comment : N/A
Duration: N/A, bitrate: N/A
Stream #0:0: Video: h264, none, 90k tbr, 90k tbn, 180k tbc
Output #0, mp4, to 'test.mp4':
Output file #0 does not contain any streamThe ffmpeg.exe output is :
>ffmpeg.exe
ffmpeg version N-81300-gce2217b Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.4.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-lib
ebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfree
type --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-lib
openjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame
--enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-
libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
libavutil 55. 28.100 / 55. 28.100
libavcodec 57. 51.100 / 57. 51.100
libavformat 57. 46.100 / 57. 46.100
libavdevice 57. 0.102 / 57. 0.102
libavfilter 6. 50.100 / 6. 50.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 1.100 / 2. 1.100
libpostproc 54. 0.100 / 54. 0.100
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
Use -h to get full help or, even better, run 'man ffmpeg'The ffmpeg output in Ubuntu is :
$ ffmpeg
ffmpeg version 2.8.6-1ubuntu2 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.3.1 (Ubuntu 5.3.1-11ubuntu1) 20160311
configuration: --prefix=/usr --extra-version=1ubuntu2 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 60.100 / 56. 60.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 40.101 / 5. 40.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
Use -h to get full help or, even better, run 'man ffmpeg'I’m using Windows 7 64 bits and Ubuntu 16.04.
I have tried to increase the suggested values but didn’t work either.
Any idea, except switching to Windows ? -
ffmpeg libz.so dependency
26 février 2014, par malaprop malapropwe are trying to install ffmpeg on our RH linux servers.
Trouble is that it works on one not on the other and we have no idea why. The working and the non working server have the same config information :
ffmpeg version 0.10.2 Copyright (c) 2000-2012 the FFmpeg developers
built on Apr 19 2012 14:00:25 with gcc 4.1.2 20080704 (Red Hat 4.1.2-51)
configuration : —enable-gpl —enable-version3 —enable-shared —enable-nonfree —enable-postproc —enable-libfaac —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libtheora —enable-libvorbis —enable-libvpx —enable-libx264 —enable-libxvid —enable-x11grab —extra-cflags=-I/usr/local/include —extra-ldflags=-L/usr/local/lib
libavutil 51. 35.100 / 51. 35.100
libavcodec 53. 61.100 / 53. 61.100
libavformat 53. 32.100 / 53. 32.100
libavdevice 53. 4.100 / 53. 4.100
libavfilter 2. 61.100 / 2. 61.100
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 6.100 / 0. 6.100
libpostproc 52. 0.100 / 52. 0.100
Hyper fast Audio and Video encoderThe error we are getting is :
ffmpeg version 0.10.2 Copyright (c) 2000-2012 the FFmpeg developers
built on Apr 19 2012 14:00:25 with gcc 4.1.2 20080704 (Red Hat 4.1.2-51)
configuration : —enable-gpl —enable-version3 —enable-shared —enable-nonfree —enable-postproc —enable-libfaac —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libtheora —enable-libvorbis —enable-libvpx —enable-libx264 —enable-libxvid —enable-x11grab —extra-cflags=-I/usr/local/include —extra-ldflags=-L/usr/local/lib
libavutil 51. 35.100 / 51. 35.100
libavcodec 53. 61.100 / 53. 61.100
libavformat 53. 32.100 / 53. 32.100
libavdevice 53. 4.100 / 53. 4.100
libavfilter 2. 61.100 / 2. 61.100
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 6.100 / 0. 6.100
libpostproc 52. 0.100 / 52. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '4598_Testvideo_MP4-H264-6MBit_AAC-44KHz-192KBit_720p.mp4' :
Metadata :
major_brand : mp42
minor_version : 0
compatible_brands : mp42mp41
creation_time : 2012-01-25 10:58:21
Duration : 00:02:13.56, start : 0.000000, bitrate : 5472 kb/s
Stream #0:0(eng) : Video : h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 5280 kb/s, 25 fps, 25 tbr, 25k tbn, 50 tbc
Metadata :
creation_time : 2012-01-25 10:58:21
handler_name : Mainconcept MP4 Video Media Handler
Stream #0:1(eng) : Audio : aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 189 kb/s
Metadata :
creation_time : 2012-01-25 10:58:21
handler_name : Mainconcept MP4 Sound Media Handler
[buffer @ 0x3160ea0] w:1280 h:720 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param :
[scale @ 0x31629a0] w:1280 h:720 fmt:yuv420p -> w:480 h:270 fmt:yuv420p flags:0x4
[libvpx @ 0x314ab40] v0.9.6
[libvpx @ 0x314ab40] Failed to initialize encoder : ABI version mismatch
Output #0, webm, to 'outputvideo.webm' :
Metadata :
major_brand : mp42
minor_version : 0
compatible_brands : mp42mp41
creation_time : 2012-01-25 10:58:21
Stream #0:0(eng) : Video : vp8, yuv420p, 480x270 [SAR 1:1 DAR 16:9], q=-1—1, 2500 kb/s, 90k tbn, 25 tbc
Metadata :
creation_time : 2012-01-25 10:58:21
handler_name : Mainconcept MP4 Video Media Handler
Stream #0:1(eng) : Audio : none, 44100 Hz, stereo, s16, 128 kb/s
Metadata :
creation_time : 2012-01-25 10:58:21
handler_name : Mainconcept MP4 Sound Media Handler
Stream mapping :
Stream #0:0 -> #0:0 (h264 -> libvpx)
Stream #0:1 -> #0:1 (aac -> libvorbis)
Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or heightI've looked at the dependent libraries using ldd and did find one differenct. the library libz.so was not listet in the system that doesn't work. ie
/lib64/ld-linux-x86-64.so.2 (0x00000035a9000000)
libavcodec.so.53 => /usr/local/lib/libavcodec.so.53 (0x00002ae5189a8000)
libavdevice.so.53 => /usr/local/lib/libavdevice.so.53 (0x00002ae518204000)
libavfilter.so.2 => /usr/local/lib/libavfilter.so.2 (0x00002ae51840e000)
libavformat.so.53 => /usr/local/lib/libavformat.so.53 (0x00002ae51869c000)
libavutil.so.51 => /usr/local/lib/libavutil.so.51 (0x00002ae519e17000)
libc.so.6 => /lib64/libc.so.6 (0x00000035a9400000)
libfaac.so.0 => /usr/lib64/libfaac.so.0 (0x0000003407800000)
libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00000035ac000000)
libmp3lame.so.0 => /usr/lib64/libmp3lame.so.0 (0x0000003407000000)
libm.so.6 => /lib64/libm.so.6 (0x00000035aa000000)
libogg.so.0 => /usr/local/lib/libogg.so.0 (0x00002ae51b35b000)
libopencore-amrnb.so.0 => /usr/lib64/libopencore-amrnb.so.0 (0x0000003409800000)
libopencore-amrwb.so.0 => /usr/lib64/libopencore-amrwb.so.0 (0x0000003407c00000)
libpostproc.so.52 => /usr/local/lib/libpostproc.so.52 (0x00002ae5197ba000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00000035a9c00000)
libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00000035aa400000)
libswresample.so.0 => /usr/local/lib/libswresample.so.0 (0x00002ae5199c6000)
libswscale.so.2 => /usr/local/lib/libswscale.so.2 (0x00002ae519bce000)
libtheoradec.so.1 => /usr/local/lib/libtheoradec.so.1 (0x00002ae51b141000)
libtheoraenc.so.1 => /usr/local/lib/libtheoraenc.so.1 (0x00002ae51af05000)
libvorbisenc.so.2 => /usr/lib64/libvorbisenc.so.2 (0x00002ae51a8fe000)
libvorbis.so.0 => /usr/lib64/libvorbis.so.0 (0x00002ae51acd9000)
libvpx.so.0 => /usr/lib64/libvpx.so.0 (0x00002ae51a687000)
libx264.so.120 => /usr/local/lib/libx264.so.120 (0x00002ae51a320000)
libxvidcore.so.4 => /usr/lib64/libxvidcore.so.4 (0x00002ae51a03a000)
linux-vdso.so.1 => (0x00007ffff63f6000)as opposed to
/lib64/ld-linux-x86-64.so.2 (0x0000003074c00000)
libavcodec.so.53 => /usr/local/lib/libavcodec.so.53 (0x00002b2038eeb000)
libavdevice.so.53 => /usr/local/lib/libavdevice.so.53 (0x00002b2038746000)
libavfilter.so.2 => /usr/local/lib/libavfilter.so.2 (0x00002b2038950000)
libavformat.so.53 => /usr/local/lib/libavformat.so.53 (0x00002b2038bdf000)
libavutil.so.51 => /usr/local/lib/libavutil.so.51 (0x00002b203a368000)
libc.so.6 => /lib64/libc.so.6 (0x0000003075000000)
libfaac.so.0 => /usr/lib64/libfaac.so.0 (0x00002b203bcef000)
libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x0000003003400000)
libmp3lame.so.0 => /usr/lib64/libmp3lame.so.0 (0x000000310ae00000)
libm.so.6 => /lib64/libm.so.6 (0x0000003075c00000)
libogg.so.0 => /usr/lib64/libogg.so.0 (0x00002b203bf01000)
libopencore-amrnb.so.0 => /usr/lib64/libopencore-amrnb.so.0 (0x00002b203bac1000)
libopencore-amrwb.so.0 => /usr/lib64/libopencore-amrwb.so.0 (0x00002b203b8ab000)
libpostproc.so.52 => /usr/local/lib/libpostproc.so.52 (0x00002b2039d0b000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x0000003075800000)
libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x000000360ea00000)
libswresample.so.0 => /usr/local/lib/libswresample.so.0 (0x00002b2039f18000)
libswscale.so.2 => /usr/local/lib/libswscale.so.2 (0x00002b203a11f000)
libtheoradec.so.1 => /usr/local/lib/libtheoradec.so.1 (0x00002b203b693000)
libtheoraenc.so.1 => /usr/local/lib/libtheoraenc.so.1 (0x00002b203b457000)
libvorbisenc.so.2 => /usr/lib64/libvorbisenc.so.2 (0x00002b203ae50000)
libvorbis.so.0 => /usr/lib64/libvorbis.so.0 (0x00002b203b22a000)
libvpx.so.0 => /usr/lib64/libvpx.so.0 (0x00002b203abd9000)
libx264.so.120 => /usr/local/lib/libx264.so.120 (0x00002b203a871000)`enter code here`
libxvidcore.so.4 => /usr/lib64/libxvidcore.so.4 (0x00002b203a58c000)
libz.so.1 => /lib64/libz.so.1 (0x0000003076000000)
linux-vdso.so.1 => (0x00007fff6adfd000)I wanted to ask whether this has something to do with the problem. before i try to figure out how come the libz.so appears i nthe one list and not the other.
btw the ld.so.conf files are identical.