FFMpegSharp.FFMPEG.Exceptions.FFMpegException: Error opening filters!

[markuszeller]

When using ConvertTo method and any VideoSize is used which does not match VideoSize.Orginal, then it crashes with following exception:

Unbehandelte Ausnahme: FFMpegSharp.FFMPEG.Exceptions.FFMpegException: Error opening filters! bei FFMpegSharp.FFMPEG.FFMpeg.RunProcess(String args, FileInfo output) in C:\Users\n4cer\Documents\Visual Studio 2017\Projects\FFMpegSharp-master\FFMpegSharp\FFMPEG\FFMpeg.cs:Zeile 372. bei FFMpegSharp.FFMPEG.FFMpeg.ToMp4(VideoInfo source, FileInfo output, Speed speed, VideoSize size, AudioQuality aQuality, Boolean multithread) in C:\Users\n4cer\Documents\Visual Studio 2017\Projects\FFMpegSharp-master\FFMpegSharp\FFMPEG\FFMpeg.cs:Zeile 111. bei FFMpegSharp.VideoInfo.ConvertTo(VideoType type, FileInfo output, Speed speed, VideoSize size, AudioQuality audio, Boolean multithread, Boolean tryToPurge) in C:\Users\n4cer\Documents\Visual Studio 2017\Projects\FFMpegSharp-master\FFMpegSharp\VideoInfo.cs:Zeile 229. bei FFMpegSharp.Example.Program.Main(String[] args) in c:\Users\n4cer\Documents\Visual Studio 2017\Projects\FFMpegSharp-master\FFMpegSharp.Example\Program.cs:Zeile 26.

The code looks like this:
outputFile = new FileInfo("test.mp4"); video.ConvertTo(VideoType.Mp4, outputFile, Speed.UltraFast, VideoSize.Hd, AudioQuality.Hd, true, false);

I could reproduce this using another Win10 machine in VS2017.

[WhiteLionATX]

Same here. While encoding with scaling works by command line (ffmpeg -i input.mp4 -vf scale=1280:720 output.mp4) this doesn´t work by using the wrapper lib of this project.

[vladjerca]

@markuszeller @WhiteLionATX I'll take a look in the following days.

[markuszeller]

I looks like the params of the exe had changed. It requires to be for example "1280:720" so the width is missing. Thanks in advance for looking at this.

[vladjerca]

@markuszeller the fix was pushed to master 👍