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• FFmpeg : do not terminate script using loop

  4 novembre 2019, par Punit Gajjar

  I have a collection of a few video URLs, and what I am trying to do is add a watermark to all the videos using a for loop, in a laravel

  inside the loop, this is my FFmpeg code.

  shell_exec('ffmpeg -y -i MY_VIDEO_PATH_HERE -i WATER_MARK_IMAGE_URL -filter_complex "overlay=18:H-h-30" -strict -2 -codec:a copy "MY_PATH_TO_STORE_VIDEO"');

  All this code is done using a queue/job from the laravel.

  My Problem is, If the above command is getting failed and not able to add the watermark

  it does not move the next video to start adding the watermark, instead of it terminate the process and try to add the watermark again for the same video.

  What I want is loop should continue for the next video instead of terminating the script.

  Any solution ?

• How can I create video thumbnails in different Folders in ffmpeg ?

  1er janvier 2020, par termnlencodes

  I’m trying to generate video thumbnails for all my video collection using ffmpeg. Downside is, I don’t know how to create them in they’re respective folders.

  Example : Videos are in the following folders ;

  C :/Media/TV Show/<showname></showname>/<seasonnum></seasonnum>/

  C :/Media/Movies/<moviename></moviename>/

  I want to generate the thumbnails under and folders.

  Here’s the script I’m using rn and I don’t know what to add on it.

  Hope somebody can help me.
  Edit : Whenever I create the thumbnails there’s a ".1" after the file extension. How can I remove it ?

• Android JavaCV FFmpegFrameRecorder Exception Could not open video codec

  11 décembre 2014, par bakua

  I’m working on some encoding in Android and I use JavaCV FFmpegFrameRecorder for that. Thing is that sometims need to restart that process. I have a restart button and on tap I release everything and create it again.

  I do it like that :

  mVideoRecorder.stop();
  
  mVideoRecorder.release();

  And then I :

  mVideoRecorder = new FFmpegFrameRecorder(videoPath, outputResolution.getWidth(), outputResolution.getHeight(), 1);
  
  mVideoRecorder.setFormat(recorderParameters.getVideoOutputFormat());
  
  mVideoRecorder.setSampleRate(recorderParameters.getAudioSamplingRate());
  
  mVideoRecorder.setFrameRate(recorderParameters.getVideoFrameRate());
  
  mVideoRecorder.setVideoCodec(recorderParameters.getVideoCodec());
  
  mVideoRecorder.setVideoQuality(recorderParameters.getVideoQuality());
  
  mVideoRecorder.setAudioQuality(recorderParameters.getVideoQuality());
  
  mVideoRecorder.setAudioCodec(recorderParameters.getAudioCodec());
  
  mVideoRecorder.setVideoBitrate(1000000);
  
  mVideoRecorder.setAudioBitrate(64000);
  
  mVideoRecorder.start();

  But sometimes on the start() line I get this exception :

  com.googlecode.javacv.FrameRecorder$Exception: avcodec_open2() error -22: Could not open video codec.
  
  at com.googlecode.javacv.FFmpegFrameRecorder.start(FFmpegFrameRecorder.java:472)

  I am not able to exactly tell circumstances in which this happens but in most cases it is when I restart two times quickly (double tap the restart button). I am able to catch the exception, but it is useless because it forces app to exit.

  My guess is that it calls start while previous mVideoRecorder is still releasing internally - and therefore has mp4 codec locked for itself or something. But that is just my guess.

  Do you guys have any opinions please ?
  Thank you