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• Performant AV1 encoding, does it exist ?

  29 novembre 2022, par V O

  I'm developing a VoD application as a white label product that runs in a SaaS context using K8s. To enable streaming, I take the input video and re-convert it into HLS segments in multiple version and codecs to reach maximum compatibility.

  


  Yesterday I started implementing AV1 as codec, as it will in near future detach h264 as it's more efficient with the same level of compatibility across all the available browsers.
That was the point where things started to get strange, as I want to have this codec instead of h264 ^^.

  


  If you take a look at the following doc pages from ffmpeg : https://trac.ffmpeg.org/wiki/Encode/AV1

  


  You will notice that there are 3 main encoders available to handle encoding to av1. These are : libaom, SVT-AV1 and rav1e. No matter which one of these I try, the performance is slow, even slower than with HEVC. Recently I came along a news article about Netflix and that they are upgrading their library to AV1. If I take a look at the numbers of media elements Netflix offers, the amount is just huge, and I really don't understand how they did it. From what I know, SVT-AV1 is developed by Netflix in cooperation with Intel, So I assume they somehow rely on hardware encoding using an Intel CPU extension.

  


  Does somebody maybe know more and how they did it ? I really can't imagine that they just do CPU only encoding. A movie would take days to get encoded.

  


  Thanks in advance

  


• Looking for a free alternative RTSP server for Node.js [closed]

  2 juin 2020, par Maoration

  I'm looking at running my node.js server as an RTSP streaming server, as well as an http server. the ability to get some ffmpeg video output to stream as rtsp to 'localhost' (which will be the server listening), and for multiple clients to request a stream from the server via the rtsp ://... protocol

  



  The most common online implementation is :
https://www.npmjs.com/package/rtsp-streaming-server

  



  However, this is licensed under GPL-3.0, meaning my product would have to be open-source, or I'll be violating the terms of use. I'm afraid thats not possible..

  



  Other common results when searching for a solution are :

  



  https://www.npmjs.com/package/rtsp-server
which just seems to wrap to lower level rtsp protocol messages.

  



  https://www.npmjs.com/package/node-media-server
which provides solutions to many use cases, but I couldnt figure out how to configure it as an RTSP server, or if this would even be possible.

  



  So, any alternatives ? other suggestions ?

  


• gst-inspect-1.0 do not see avdec_h264

  16 octobre 2020, par Marat Zakirov

  Previously I installed gstreamer via conda and its (good) plugins
next I installed gst-libav via sudo apt-get install gstreamer1.0-libav next I used apt-file list gstreamer1.0-libav to see installation path and found it to be /usr/lib/x86_64-linux-gnu/gstreamer-1.0/ next I read running gstream manual and then

  


  GST_PLUGIN_PATH=/usr/lib/x86_64-linux-gnu/gstreamer-1.0/ gst-inspect-1.0 avdec_h264

(base) marat@user-System-Product-Name:~$ ls -lh /usr/lib/x86_64-linux-gnu/gstreamer-1.0/ | grep av
-rw-r--r-- 1 root root 181K мар 21  2020 libgstavi.so
-rw-r--r-- 1 root root  56K мар 21  2020 libgstinterleave.so
-rw-r--r-- 1 root root 251K дек  9  2019 libgstlibav.so
-rw-r--r-- 1 root root  15K мар 21  2020 libgstnavigationtest.so
-rw-r--r-- 1 root root  40K мар 21  2020 libgstwavenc.so
-rw-r--r-- 1 root root  48K мар 21  2020 libgstwavpack.so
-rw-r--r-- 1 root root  72K мар 21  2020 libgstwavparse.so


  


  It found many new modules but didn't found avdec_h264. What I am missing ?

  


  UPDATE :

  


  I just want way to use gstreamer via conda virtenv python appliation. If you know valid way to do so I will consider your reply as answer.