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• Cannot set effect transition in FFmpeg

  27 mars 2023, par ninhnau19

  Im using FFmpeg to create a video from some image .
This is my command :

  


  val command = "-framerate 1/3 -i $photo1Path -framerate 1/3 -i $photo2Path -framerate 1/3 -i $photo3Path -i $mp3File -filter_complex \"[0:v]scale=w=min(1080\\,iw):h=min(1080\\,ih):force_original_aspect_ratio=decrease,fade=t=out:st=2:d=1[0v];[1:v]scale=w=min(1080\\,iw):h=min(1080\\,ih):force_original_aspect_ratio=decrease[1v];[2:v]scale=w=min(1080\\,iw):h=min(1080\\,ih):force_original_aspect_ratio=decrease[2v];[0v][1v][2v]concat=n=3:v=1:a=0[v]\" -map 3:a -map \"[v]\" -shortest -c:v libx264 -b:v 5000k -pix_fmt yuv420p -movflags +faststart $outputFilePath2"


  


  I want to add effect between each image, but it's not work. I have consulted quite a few sources, such as this post

  


  About version FFmpeg, Im using

  


  implementation 'com.arthenica:mobile-ffmpeg-full-gpl:4.3.1'


  


  Can anyone have any idea ?

  


• How to show subtitle on video in ffmpeg

  19 février 2023, par Ammara

  I am working with ffmpeg. I use below code to show subtitle on video. I create video but subtitle did not show. Please help me
Here is my code. here is my abc.srt file. I store this to my download folder of mobile

  


  1&#xA;00:00:00,000 --> 00:00:01,500&#xA;This an example subtitle&#xA;&#xA;2&#xA;00:00:01,600 --> 00:00:02,500&#xA;<i>Italic style</i>&#xA;&#xA;3   &#xA;00:00:03,000 --> 00:00:15,000&#xA; Video by Tiger Lily on pexels.com&#xA;

  


  here is ffmpeg command

  


  String srt=BASE_PATH+'abc.srt';
  String CommandOverlay=' -i ${video1} -i "$srt" -c:v copy -c:a copy -c:s mov_text ${OUTPUT_PATH}';
  await FFmpegKit.execute(CommandOverlay).then((session) async {
    final returnCode = await session.getReturnCode();
    if (ReturnCode.isSuccess(returnCode)) {print("Task Completed");}
    else if (ReturnCode.isCancel(returnCode)) {print("cancel");}
    else {print("error ");}
  });
}else if (await Permission.storage.isPermanentlyDenied) {
  openAppSettings();
}


  


  It generates video without any subtitle

  


• Crash is happening while playing a video where my iOS app is integrated with VideoKit and mobileFFMpeg frameworks

  25 juin 2019, par vinay

  I am using MobileFFMpeg for executing the FFmpeg commands in ios application , As I am using mobileFFMPeg for sending the live stream from ip camera to Azure server ..... And it is working fine

  And the problem is my application is crashing when I integrate the iOS VideoKit with this MobileFFmpeg

  This is the cocoapod that I have used to installed the MobileFFMpeg

  pod 'mobile-ffmpeg-full-gpl', '~> 4.2'

  MobileFFmpeg.execute("-i video.mkv -codec copy video.mp4") ---------- for executing ffmpeg commands

  if(avformat_find_stream_info(_avFmtCtx, opts) < 0) {
  
      [self setDecoderState:kVKDecoderStateConnectionFailed errorCode:kVKErrorStreamInfoNotFound];
  
      return kVKErrorStreamInfoNotFound;
  
  }

  ---------------------------> This is the point where the application is crashing while playing a video with the videoKit framework. :)

  I expect iOS VideoKit with work fine with MobileFFmpeg without any crashes and execute the ffmpeg commands. :)