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• Revision f6582d6928 : Revert "Simplify mask checking in loop filters" Jingning saw bitstream change w

  4 décembre 2013, par Yunqing Wang

  Changed Paths :
   Modify /vp9/common/vp9_loopfilter.c

  
  
  Revert "Simplify mask checking in loop filters"

  Jingning saw bitstream change with this patch. It could be true
  that (mask_16x16_0 & 1) is 1, but (mask_16x16_1 & 1) is 0 in some
  edge cases.

  This reverts commit 8f05e70340533b9922be5b1c97c37e50607fd862.

  Change-Id : I0a529435ce816a1e14653eb510d5090de276070a

• What is the official website for libavcodec ?

  8 mars 2013, par Ken

  I would like to use libavcodec for a project, the problem is i don't understand where i'm supposed to get the official release, this library is so popular that i can't tell what is the official website.

  for example there are 2 major projects like libav and ffmpeg that are using it but i can't find the official source.

  Where is this website ?

• Low latency routing of rtp input to rtsp output with ffmpeg on a server

  29 mai 2020, par guillefix

  I want to be able to do some simple low-latency screen share. I know peer-to-peer would be the lowest latency, but it seems using an intermediate server is a lot easier to setup. I have found this awesome little library, which sets up an RTSP server, which I'm running on my digital ocean server. I then :

  



  

  1. Set up OBS to stream using RTP to the server on port 8558 with libx264 encoding.

  


  2. Run ffmpeg -re -stream_loop -1 -i rtp://127.0.0.1:8558 -c:v libx264 -c:a aac -f rtsp rtsp://localhost:8554/mystream on the server.

  


  3. Open rtsp://<server ip="ip">:8554/mystream</server> on VLC.

  


  



  However, the latency seems to be quite high. With my crappy internet it must have been like half a minute. A friend with better internet saw it fluctuating between 4-15 seconds. Furthermore, there seems to be a lot of artifacts on the video (problems with encoding ? I'm not sure why these happen ?)

  



  I attach below my OBS settings, and an example of artifacts.

  



  My question is : is there some settings on OBS and on ffmpeg that would allow this to have as low end-to-end latency as possible, while not having too many bad artifacts ? I'm not very well versed on video encoding and streaming, so this is all quite new to me. I'm willing to learn !