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  • Install gstreamer on EC2 Amazon Linux AMI ?

    6 décembre 2015, par vy32

    I’m trying to install QT5.5 on Amazon EC2 Linux, which apparently requires that I install some kind of multimedia support. It looks like that comes from gstreamer.

    yum search gstreamer turns up :

    [ec2-user@ip-172-30-1-58 ~]$ yum search gstreamer
    
Loaded plugins: priorities, update-motd, upgrade-helper
    
23 packages excluded due to repository priority protections
    
============================================== N/S matched: gstreamer ==============================================
    
gstreamer-ffmpeg.x86_64 : GStreamer FFmpeg-based plug-ins
    
gstreamer-ffmpeg-debuginfo.x86_64 : Debug information for package gstreamer-ffmpeg
    
gstreamer-plugins-bad.x86_64 : GStreamer streaming media framework "bad" plug-ins
    
gstreamer-plugins-bad-debuginfo.x86_64 : Debug information for package gstreamer-plugins-bad
    
gstreamer-plugins-bad-nonfree.x86_64 : Non Free GStreamer streaming media framework "bad" plug-ins
    
gstreamer-plugins-bad-nonfree-debuginfo.x86_64 : Debug information for package gstreamer-plugins-bad-nonfree
    
gstreamer-plugins-ugly.x86_64 : GStreamer streaming media framework "ugly" plug-ins
    
gstreamer-plugins-ugly-debuginfo.x86_64 : Debug information for package gstreamer-plugins-ugly
    
gstreamer-plugins-ugly-devel-docs.noarch : Development documentation for the GStreamer "ugly" plug-ins
    
gstreamer1-libav.x86_64 : GStreamer 1.0 libav-based plug-ins
    
gstreamer1-libav-debuginfo.x86_64 : Debug information for package gstreamer1-libav
    
gstreamer1-plugins-bad-freeworld.x86_64 : GStreamer 1.0 streaming media framework "bad" plug-ins
    
gstreamer1-plugins-bad-freeworld-debuginfo.x86_64 : Debug information for package gstreamer1-plugins-bad-freeworld
    
gstreamer1-plugins-ugly.x86_64 : GStreamer 1.0 streaming media framework "ugly" plug-ins
    
gstreamer1-plugins-ugly-debuginfo.x86_64 : Debug information for package gstreamer1-plugins-ugly
    
gstreamer1-plugins-ugly-devel-docs.noarch : Development documentation for the GStreamer "ugly" plug-ins
    
gstreamer1-vaapi.x86_64 : GStreamer plugins to use VA API video acceleration
    
gstreamer1-vaapi-debuginfo.x86_64 : Debug information for package gstreamer1-vaapi
    
gstreamer1-vaapi-devel.x86_64 : Development files for gstreamer1-vaapi
    
qt-gstreamer.x86_64 : C++ bindings for GStreamer with a Qt-style API
    
qt-gstreamer-debuginfo.x86_64 : Debug information for package qt-gstreamer
    
qt-gstreamer-devel.x86_64 : Header files and development documentation for qt-gstreamer
    

    
  Name and summary matches only, use "search all" for everything.
    
[ec2-user@ip-172-30-1-58 ~]$ %

    However, when I try to install one of these, I get this error :

    $ sudo yum install -y gstreamer-ffmpeg
    
Loaded plugins: priorities, update-motd, upgrade-helper
    
23 packages excluded due to repository priority protections
    
Resolving Dependencies
    
--> Running transaction check
    
---> Package gstreamer-ffmpeg.x86_64 0:0.10.13-15.el7.nux will be installed
    
--> Processing Dependency: liborc-0.4.so.0()(64bit) for package: gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64
    
--> Processing Dependency: libgstvideo-0.10.so.0()(64bit) for package: gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64
    
--> Processing Dependency: libgstreamer-0.10.so.0()(64bit) for package: gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64
    
--> Processing Dependency: libgstpbutils-0.10.so.0()(64bit) for package: gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64
    
--> Processing Dependency: libgstbase-0.10.so.0()(64bit) for package: gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64
    
--> Processing Dependency: libgstaudio-0.10.so.0()(64bit) for package: gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64
    
--> Finished Dependency Resolution
    
Error: Package: gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64 (nux-dextop)
    
           Requires: liborc-0.4.so.0()(64bit)
    
Error: Package: gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64 (nux-dextop)
    
           Requires: libgstreamer-0.10.so.0()(64bit)
    
Error: Package: gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64 (nux-dextop)
    
           Requires: libgstbase-0.10.so.0()(64bit)
    
Error: Package: gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64 (nux-dextop)
    
           Requires: libgstaudio-0.10.so.0()(64bit)
    
Error: Package: gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64 (nux-dextop)
    
           Requires: libgstpbutils-0.10.so.0()(64bit)
    
Error: Package: gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64 (nux-dextop)
    
           Requires: libgstvideo-0.10.so.0()(64bit)
    
 You could try using --skip-broken to work around the problem
    
 You could try running: rpm -Va --nofiles --nodigest
    
[ec2-user@ip-172-30-1-58 ~]$

    Supplying the suggested --skip-broken doesn’t help :

    [ec2-user@ip-172-30-1-58 ~]$ sudo yum install -y gstreamer-ffmpeg --skip-broken
    
Loaded plugins: priorities, update-motd, upgrade-helper
    
23 packages excluded due to repository priority protections
    
Resolving Dependencies
    
--> Running transaction check
    
---> Package gstreamer-ffmpeg.x86_64 0:0.10.13-15.el7.nux will be installed
    
--> Processing Dependency: liborc-0.4.so.0()(64bit) for package: gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64
    
--> Processing Dependency: libgstvideo-0.10.so.0()(64bit) for package: gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64
    
--> Processing Dependency: libgstreamer-0.10.so.0()(64bit) for package: gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64
    
--> Processing Dependency: libgstpbutils-0.10.so.0()(64bit) for package: gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64
    
--> Processing Dependency: libgstbase-0.10.so.0()(64bit) for package: gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64
    
--> Processing Dependency: libgstaudio-0.10.so.0()(64bit) for package: gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64
    

    
Packages skipped because of dependency problems:
    
    gstreamer-ffmpeg-0.10.13-15.el7.nux.x86_64 from nux-dextop
    
[ec2-user@ip-172-30-1-58 ~]$

    So how do I install gstreamer-ffmpeg ? Why aren’t the dependencies automatically being followed ?

  • What is the right command to convert an mp3 file to the required codec version (MPEG version 2) and bit rate (48 kbps) for Amazon Alexa SSML ?

    6 mai 2017, par Asimov4

    I am trying to convert an mp3 file to the format expected by the audio tag in the Amazon Alexa SSML markup language as described here : https://developer.amazon.com/public/solutions/alexa/alexa-skills-kit/docs/speech-synthesis-markup-language-ssml-reference

    The documentation recommends using https://www.ffmpeg.org/ffmpeg.html

    I tried this command but can’t find the right codec to use :
    ffmpeg -y -i input.mp3 -ar 44100 -ab 48k -codec:a mpeg2 -ac 1 output.mp3

    I know I need to convert the file because Alexa fails with the following error : The audio is not of a supported MPEG version

  • NVIDIA accelerated ffmpeg (nvenc_h264 ) is dead slow on Amazon G2 instance

    16 novembre 2015, par Abhijit Pathak

    FFMPEG when compiled with following options give abysmal performance on Amazon G2 instance( g2.2xlarge, GRID K520) when compared with standalone Dell-Precision-T1700 (Quadro-k620)

    "--enable-nonfree --enable-gpl --enable-version3 --enable-shared --enable pthreads [b]--enable-nvenc[/b] --enable-runtime-cpudetect --disable-doc --enable-libmp3lame"

    Above ffmpeg binary took 66 seconds to transcode 5.22 mins BVE_Localize.mp4 file with following command.

    time ffmpeg -y -i BVE_Localize.mp4 -strict -2 -vcodec nvenc_h264 -b 5000k -acodec aac -ab 256k -f mpegts BVELocalize.ts ( took 1m6.990s on G2)

    When same ffmpeg command is executed on Dell-Precision-T1700 (Xeon Dual core, Quadro K620) based workstation takes 0m41.572s.

    I would like ffmpeg to perform better on Amazon G2 instance. What do you think I might be missing ? My Amazon G2 instance configuration is Ubuntu 14.04 64 bit, Cuda 7.0 , 352.55 drivers, MSI disabled,NVIDIA SDK 5.0.1

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