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• ffmpeg for Android - how to use Audio ?

  1er août 2014, par user2976267

  First off - if anyone knows a simpler way to get exact current playback time of audio - please tell.

  The problem with a MediaPlayer in a standard API is after searching through audio it gives back wrong getCurrentTime().

  After searching through net I’ve found that it is a common and unsoleable bug of MediaPlayer and there’s nothing you could do about it.

  So, there’s an ffmpeg library and google search is full of instructions how to compile it which is so complicated for me who know nothing about c++, But the problem - every tutorial about ffmpeg finishes with the Logging some file аnd no info how to play file, search, get current milliseconds of playback, load file, prepare it, etc.

  Can someone give me instructions on that because I can’t google it, only compiling tutorials, or suggest an easier way to playback audio , search through that and get a correct current time because MediaPlayer is correct only when playing it from the beginning

• ffmpeg how to copy one frame for certain duration

  19 août 2018, par user889030

  Am trying to add image Overlay to video it specific duration for specific time period for which i want that video frame to be copied for specific time so that video feels like stationary and image overlay have animated effect on that specific frame .

  ffmpeg -y -i small.mp4 -i google.png -filter_complex "overlay=enable='between=(t,1,4)':x=30+t*28:y=50"  output.mp4 

  the above command insert google.png to video small.mp4 between 1 to 4 sec it x=30 and y =50 where x is added with t * 28 , which create 28 pixel shift it x-axis

  currently am using this command which works ok but the problem is i do no know how to copy the frame for certain duration so that image overlay have animation effect on it

• Output FFMPEG segments to GCS

  28 janvier 2019, par Terrabyte

  Im trying to output an ffmpeg hls stream to google cloud storage after each segment is created or at least after the entire encoding is done. Doesn anyone know how to accomplish this ?

  This is what i have in my bash script :

  $FFMPEG -hide_banner -i "$infile" \
  
      $PASSVAR \
  
      -y \
  
      -codec:v "$VIDEO_CODEC" \
  
      -codec:a "$AUDIO_CODEC" \
  
      -threads "$NUMTHREADS" \
  
      -map 0:v \
  
      -map 0:a \
  
      -flags \
  
      -global_header \
  
      -f segment \
  
      -segment_list "$playlist_name" \
  
      -segment_time "$SEGLENGTH" \
  
      -segment_format mpeg_ts \
  
      -g "$key_frames_interval" \
  
      -keyint_min "$key_frames_interval" \
  
      $resolution \
  
      $bitrate \
  
      $FFMPEG_ADDITIONAL \
  
      $FFMPEG_FLAGS \
  
      "$OUTPUT_DIRECTORY/$output_name" | gsutil -m mv "$OUTPUT_DIRECTORY/$output_name" gs://bucket-vod-example
  
  }

  does anyone know how to output the files to gsutls as it’s being encoded ? I can make the output the mounted storage point of google cloud storage but encoding directly to it is extremely slow so if possible is there way to encode locally then transfer as it’s being encoded ?