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• How YouTube identifies if a movie is shaky [closed]

  28 novembre 2012, par MollyRazor

  After uploading a movie to Youtube, it analyzes the movie and if it's shaky, then it gives the option to correct it. The correction works with ffmpeg, but is there any open source method to analyze whether a movie is shaky ?

  I can't understand StackOverflow moderators. This place is full of self righteous bastards.

  Mr. Moderator says in a comment : ffmpeg is open source. O REALLY ? Then what parameters to use so ffmpeg outputs => yes, this is a shaky movie or no, this isnt. Ah, you can't answer that, so you close this question.

  Have you even read the question thoroughly ? Then do so again please. I think by the age of 50 you can correctly interpret what was written and what the question was.

  Thank you.

• streaming on youtube with ffmpeg [on hold]

  20 septembre 2017, par Bojan Dedić

  I found this code on internet and it works great for streaming live videos on youtube. Only problem is that I need to stream every video which is inside folder "videos", not only just one.

  VBR="2500k"                          
  
  sortie
  
  FPS="30"               
  
  QUAL="medium"                                  
  
  YOUTUBE_URL="rtmp://a.rtmp.youtube.com/live2"  
  
  
  
  SOURCE="video.mp4"    
  
  KEY="..." 
  
  
  
  ffmpeg \
  
     -i "$SOURCE" -deinterlace \
  
     -vcodec libx264 -pix_fmt yuv420p -preset $QUAL -r $FPS -g $(($FPS * 2)) -b:v $VBR \
  
     -acodec libmp3lame -ar 44100 -threads 6 -qscale 3 -b:a 712000 -bufsize 512k \
  
     -f flv "$YOUTUBE_URL/$KEY"

  This is what i came up with :

  for f in *.mp4; do
  
      ffmpeg \
  
          -i "$f" -deinterlace \
  
          -vcodec libx264 -pix_fmt yuv420p -preset $QUAL -r $FPS -g $(($FPS * 2)) -b:v $VBR \
  
          -acodec libmp3lame -ar 44100 -threads 6 -qscale 3 -b:a 712000 -bufsize 512k \
  
          -f flv "$YOUTUBE_URL/$KEY"
  
  done

• Two rtsp streams to youtube on a Pi3

  19 mars 2020, par Sébastien Bonaimé

  I want to stream two rtsp camera from my birdbox to youtube from my raspberry pi 3 with the entrance in Pip (picture in picture) on top left. I don’t need sound.

  192.168.1.13 can do 30 fps with sound that I don’t need
  192.168.1.31 is only 12 fps without sound

  I have some problems of lag between the two camera on the youtube stream which I think is due to the different fps. I compile ffmpeg with h264. Here is what I did

  ffmpeg -re -f lavfi -i anullsrc -rtsp_transport udp -thread_queue_size 1000k -i rtsp://admin:123@192.168.1.13:554 -i rtsp://admin:@192.168.1.31:554 -filter_complex "[1]scale=iw/4:ih/4[pip]; [2][pip] overlay=0:0"   -framerate 13  -bufsize 512k  -b:v 1500k -threads 4 -q:v 3  -c:v h264_omx  -c:a aac -f flv rtmp://a.rtmp.youtube.com/live2/XXX-XXXX-XXX

  and here are the errors

  [h264 @ 0x20ddd30] error while decoding MB 69 67, bytestream -6rate=1589.2kbits/s dup=0 drop=6 speed=0.997x
  
  [h264 @ 0x20ddd30] concealing 100 DC, 100 AC, 100 MV errors in I frame
  
  rtsp://admin:@192.168.1.31:554: corrupt decoded frame in stream 0te=1589.0kbits/s dup=0 drop=6 speed=0.997x
  
  [rtsp @ 0x1f2cea0] max delay reached. need to consume packetbitrate=1589.2kbits/s dup=0 drop=6 speed=0.997x
  
  [rtsp @ 0x1f2cea0] RTP: missed 35 packets
  
  [h264 @ 0x2099580] error while decoding MB 60 30, bytestream -6rate=1589.3kbits/s dup=0 drop=6 speed=0.997x
  
  [h264 @ 0x2099580] concealing 4549 DC, 4549 AC, 4549 MV errors in I frame
  
  rtsp://admin:@192.168.1.31:554: corrupt decoded frame in stream 0
  
  [rtsp @ 0x1f2cea0] max delay reached. need to consume packetbitrate=1588.9

  What can I do to improve the stream ? When a bird enter the box, there is also a quality problem when the image is changing and some lagging.
  You can have a look here
  https://www.youtube.com/watch?v=iisbinyvSFk&feature=youtu.be

  Thank you