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• live stream mosaic to twitch using nginx and ffmpeg

  17 novembre 2018, par Jorge Vértiz

  I’ve been trying to make a mosaic of two rtmp streams and resend it to Twitch, i´m using a nginx with a rtmp module and ffmpeg. I’ve come out with this but doesnt work :

  exec /usr/bin/ffmpeg - report -i rtmp://localhost/app/input -i rtmp://localhost/app/input -filter_complex "[0:v]scale=480:-1,setsar=1[l];[1:v]scale=480:-1,setsar=1[r];[l][r]hstack;[0:a][1:a]amerge=inputs=2[a]" -map v -map "[a]" -c:v libx264 -preset veryfast -ar 44100 -f flv rtmp://live-mia.twitch.tv/app/xxxxxxxxxx

  The report shows an endless loop

  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)

  how do I get this stream working ?

• Is there a way to Extract frames from .ts files with Http Live Stream in iOS

  12 mai 2016, par user1529412

  I have a current setup in iOS app that streams directly from RTSP and I use ffmpeg library in objective C to extract frames and convert them to RGB/YUV and display them consecutive RGB pics (Video like).

  I have a new requirement for HTTP Live Stream (HLS) which requires .ts files and m3u8 index file. I can play the ts files with AVPlayer, but its not what I am looking for, I want to apply my custom OpenGL View like the baove RTSP, so I need access to the actual frames of the ts, because I need the finer control over the frames to apply some OpenGL manipulation. Does anyone know how I can get at the frames of the .ts in Objective-C ?

• live stream desktop to android tablet and delay

  25 août 2013, par Nani

  I am trying to live stream the desktop to android tablet. Here is what I did

  1) Capture the screen using the ffmpeg

  ffmpeg -y -f x11grab -s 800x600 -r 20 -i :0 http://x.x.x.x:8090/feed1.ffm

  2) Stream using ffserver

  Here is partial ffserver.conf file

  <stream test="test">
  
  Feed feed1.ffm
  
  Format flv
  
  NoAudio                                                
  
  VideoSize 800x600                                      
  
  </stream>

  3) Play the stream on the tablet (Android 4.3) using URL "http://x.x.x.x:8090/test"

  I am able to see the desktop on tablet with few issues
  1) There is around 6 to 8 secs delay in the video
  2) player shows a warning "first frame is no keyframe"

  When I changed the "Format flv" to "Format mpegts" in "ffserver.conf" file the warning is gone. But the delay is still there.

  Is there a way to reduce the delay ?

  Am I using the correct format ?

  I want to achieve at max 2 sec delay for my desktop streaming.