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• how to convert videos to flv using ffmpeg in php ?

  17 février 2014, par Patrioticcow

  i am trying to convert some different video formats to flv using ffmpeg. But it seems that only some videos go through.

  ffmpeg -i /var/www/tmp/91640.avi -ar 22050 -ab 32 -f flv /var/www/videos/91640.flv

  here is some debug info :

  Seems stream 0 codec frame rate differs from container frame rate: 23.98 (65535/2733) -> 23.98 (5000000/208541)
  
  Input #0, avi, from '/var/www/tmp/91640.avi':
  
    Duration: 00:01:12.82, start: 0.000000, bitrate: 5022 kb/s
  
      Stream #0.0: Video: mpeg4, yuv420p, 1280x528 [PAR 1:1 DAR 80:33], 23.98 tbr, 23.98 tbn, 23.98 tbc
  
      Stream #0.1: Audio: ac3, 48000 Hz, 5.1, s16, 448 kb/s
  
  WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s
  
  Output #0, flv, to '/var/www/videos/91640.flv':
  
      Stream #0.0: Video: flv, yuv420p, 1280x528 [PAR 1:1 DAR 80:33], q=2-31, 200 kb/s, 90k tbn, 23.98 tbc
  
      Stream #0.1: Audio: adpcm_swf, 22050 Hz, 5.1, s16, 0 kb/s
  
  Stream mapping:
  
    Stream #0.0 -> #0.0
  
    Stream #0.1 -> #0.1
  
  Error while opening codec for output stream #0.1 - maybe incorrect parameters such as bit_rate, rate, width or height

  also, if i try to grab one frame ad convert it to jpeg i get an error as well

  ffmpeg -i /var/www/tmp/91640.avi  -an -ss 00:00:03 -t 00:00:01 -r 1 -y /var/www/videos/91640.jpg

  debug info

  ...
  
  [mpeg4 @ 0x1d7d810]Invalid and inefficient vfw-avi packed B frames detected
  
  av_interleaved_write_frame(): I/O error occurred
  
  Usually that means that input file is truncated and/or corrupted.

  im thinking that the image fails because the video conversion failed in the first place, not sure though

  any ideas what goes wrong ?

• ffmpeg doesn't stream over live videos

  31 décembre 2015, par Haseeb Ahmad

  ffmpeg work fine for localhost but doesnt work for video which is live

  FFMPEG::Movie.new("http://getpayad-dev.s3.amazonaws.com/ads/videos/000/000/014/original/Ufone_Tarzan_commercial_%28Ufone_Network_Quality%29_most_Funny_Ad.mp4?1451555000")

  It gives an error

  Errno::ENOENT: No such file or directory - the file 'http://getpayad-dev.s3.amazonaws.com/ads/videos/000/000/014/original/Ufone_Tarzan_commercial_%28Ufone_Network_Quality%29_most_Funny_Ad.mp4?1451555000' does not exist
  
  from /home/des0071/.rvm/gems/ruby-2.2.1/gems/streamio-ffmpeg-1.0.0/lib/ffmpeg/movie.rb:11:in `initialize

  How I fix it ?

• FFMPEG add circular mask to videos, convert to black and white and concatenate

  3 mai 2018, par Yassine

  Hello everyone i’m a beginner and i would appreciate your help.

  I’m making a mobile application that generates custom video resumes based on the user’s videos taken from his phone, the user has to upload 5 different videos to the server from the mobile application, in the server side i want to :

  • Add a .png circular mask to each video.
  • Make each video black and white.

  • Concatenate the videos with other already existing title videos
    (e.g [userVideo1] [title1] [userVideo2] [title2]...) Visual Example

    [Edit : I would like more features]

  • Add background music
  • Add watermark logo in the middle
  • Remove silent footage from the beginning and from the end
  • Some input videos might be rotated, i want to rotate videos back to normal if they are rotated.

  So far i managed to add the circular mask, make the videos black and white and concatenate 3 videos including a premade title video, but the second user video has no sound in the output.

  This is the script i ended up with :

  ffmpeg -i uservid1.mov -i uservid2.mp4 -i mask.png -i title1.mp4  -preset 
  
  ultrafast -filter_complex "
  
  
  
  [2:v][0:v]scale2ref[s1][s2];     
  
  [s2][s1]overlay[vid1];  
  
  [2:v][1:v]scale2ref[s3][s4]; 
  
  [s4][s3]overlay[vid2];  
  
  [vid1]hue=s=0[v0]; 
  
  [vid2]hue=s=0[v1];  
  
  [v0]scale=720x400[in0]; 
  
  [v1]scale=720x400[in1]; 
  
  [3:v]scale=720x400[in3]; 
  
  [in0]setsar=sar=0[final0]; 
  
  [in1]setsar=sar=0[final1];      
  
  [in3]setsar=sar=0[final3]; 
  
  [final0][final3][final1]concat=n=3;"
  
  
  
  -codec:a copy finalCV.mp4