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• Subtitle word scaling with ASS file causing line shifting

  23 April 2024, by Barrard

  I'm trying to make my subtitles scale one word at a time, but I'm running into an issue with the whole line shifting.
Is there a way I can scale a word, and make the other words not move sue to the scale effect?
Here is the ASS File

  


  [Script Info]
ScriptType: v4.00+
PlayResX: 384
PlayResY: 288
ScaledBorderAndShadow: yes
[V4+ Styles]
Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, 
BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, 
BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding
Style: Default,Arial,18,&H00FFFFFF,&H00FFFFFF,&H00000000,&HFF000000,-1,0,0,0,100,100,0,0,3,1,0.6,5,10,10,10,0
[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:0.00,0:00:1.00,Default,,0,0,0,,{\an5\pos(192,144)\alpha&HFF&}And so my fellow Americans,
Dialogue: 0,0:00:0.00,0:00:02.50,Default,,0,0,0,,{\an5\pos(192,144)\fscx90\fscy90\t(0,2500,\fscx120\fscy120)}And{\fscx100\fscy100} so my fellow Americans,
Dialogue: 0,0:00:2.50,0:00:05.00,Default,,0,0,0,,{\an5\pos(192,144)\fscx120\fscy120\t(0,2500,\fscx100\fscy100)}And{\fscx100\fscy100} so my fellow Americans,


  


  this shows the video output.
https://youtube.com/shorts/d4VaoWqTMtQ?feature=share

  


  Thanks in advanced.

  


• FFMPEG, pixelated frames, and webm format

  22 September 2016, by Abel Mohler

  It seems like every time I split a .webm video, half or more of the frames are pixelated and distorted.

  My configuration looks like the following:

  FFmpeg version 0.6.6-4:0.6.6-0ubuntu0.11.04.1, Copyright (c) 2000-2010 the Libav developers
  
    built on Jun 12 2012 16:35:16 with gcc 4.5.2
  
    configuration: --extra-version=4:0.6.6-0ubuntu0.11.04.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static

  Does anyone have any experience with something similar to this? When I play the same videos with a standard ffmpeg player on the same system, they look just fine.

• ffmpeg rotate 2 videos and create split

  1 July 2023, by Евгений Федоров

  I have 2 videos and i need to rotate them and create split video of both

  


  Video 1

  


  

  


  Video 2

  


  

  


  Both videos are same resolution and FPS.
In the and I want to get this (first video rotated on 90 and second on 270 degrees)

  


  

  


  How to correctly specify arguments in filter complex for ffmpeg?

  


  Right now I use the following arguments, but I'm not sure how to specify rotation angle correctly

  


  var outputFile = Path.Combine(folder,  "result.mp4");
            var leftSideFile = @"left.mp4";
            var rightSideFile = @"right.mp4";

            var inputArgs = string.Format("-i \"{1}\" -i \"{2}\" -filter_complex  [0:v]pad=iw*2:ih[int];[0]rotate=PI/2;[int][1:v]overlay=W/2:0[vid] -map [vid] -c:v libx264 -crf 0 -preset veryfast \"{0}\"", outputFile, leftSideFile, rightSideFile);

            var mergeVideos = new Process
            {
                StartInfo =
                            {
                            FileName = ffmpegPath,
                            Arguments = $"{inputArgs}",
                            UseShellExecute = false,
                            CreateNoWindow = false,
                            RedirectStandardInput = true
                            }
            };
            mergeVideos.Start();
            mergeVideos.WaitForExit();


  


  How do I need specify the rotation degree arguments for the first and second video and get the desired result?