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• AR Drone 2 and ffserver + ffmpeg streaming

  5 mars 2013, par BjarkeHS

  I want to be able to restream the video feed of the AR Drone 2 from a Debian Server to Flash.

  I am aware that the AR Drone uses the codec p264. I'm totally green when it comes to video codecs, so I don't know what will be suitable for the goal I want to achieve ?

  I have been able to stream the video feed from the AR Drone but with very high latency and extremely low quality, compared to when I directly connect to the AR Drone using ffplay.

  I currently use the .swf example in the standard ffserver.conf :

  <stream>
  
  Feed feed1.ffm
  
  Format swf
  
  VideoFrameRate 30
  
  VideoIntraOnly
  
  NoAudio
  
  </stream>

  And the settings for the .ffm Feed are as follows :

  <feed>
  
  File /tmp/feed1.ffm
  
  FileMaxSize 17K
  
  ACL allow 127.0.0.1
  
  NoAudio
  
  </feed>

  The command I use for giving input to the ffserver feed :

  ffmpeg -i http://192.168.1.1:5555 http://localhost:8090/feed1.ffm

  How am I able to achieve lower latency and higher quality, since the stream is currently unwatchable ?

• Merge/Blend/Composite transparent webm files with a jpg/png using ffmpeg

  13 avril 2021, par Lokanath

  I previously had generated color.webm and alpha.webm files withffmpeg using png images.
However, when I play the generated videos in my application it consumes quite some resources so I have decided to create a standard video(No alpha needed), I cannot re-record the videos as there are a lot of them at this point.

  


  I am generating the alpha and color video using the following command ffmpeg -framerate 30 -i img%d.png -filter_complex "alphaextract[a]" -map 0:v -c:v libvpx-vp9 -pix_fmt yuv420p -auto-alt-ref 0 -crf 15 -b:v 0 color.webm -map "[a]" -c:v libvpx-vp9 -pix_fmt yuv420p -auto-alt-ref 0 -crf 15 -b:v 0 alpha.webm

  


  I am looking to get a final video output where in alpha values are replaced with the png/jpg image, it's more like replacing the green screen with a background however in my case greenscreen is the alpha channel.

  


  Could any one let me know how to combine alpha.webm, color.webm with a jpg/png image without minimal or no quality loss ?
.

  


• Choose your favourite logo

  28 septembre 2018, par Matomo Core Team — Community

  We’ve been searching for a new logo and we are now down to the final three designs. We want you, the community, to help us choose our logo as we set the scene for a refreshed and vibrant new look for Matomo.

  Please choose your favourite Matomo logo from the three options below. Voting limited to once per person :)

  • Choose your favorite logo*
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