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• Is there a way to fit a given time frame of a a video to fit a specific file size ?

  21 février 2020, par Exosylver

  Is there a ffmpeg command to fit part of a video into a certain file size ? For example, if it is a 645mb video that is 70 minutes long, and I want 7 parts (each part 10 mins)- to limit each part to 93 mb (the average estimated file size) ?

  (I already tried to break it up by timestamp,but the files don’t end up the same size)

• How to remove a specific segment from an audio file using timestamps ? [closed]

  9 février, par Hilal Khan

  I am working on a C# project where I need to remove a specific segment from an audio file (e.g., WAV, MP3) based on start and end timestamps, while keeping the rest of the audio intact.

  


  For example, given a 20-minute audio file, I want to remove the section from 17:00 to 19:00 and be left with a new audio file containing only 0:00-17:00 and 19:00-20:00 (i.e., keeping the parts before and after the cut).

  


  I have used NAudio and FFmpeg to trim a file by cutting from the start or end, but I only get my desired snippet as a separate file which is not what I am looking for as I want it to be removed from the audio itself

  


  Heres what I have so far :

  


  static void RemoveSegment(string inputPath, string outputPath, double startTime, double endTime)
{
    using (var reader = new Mp3FileReader(inputPath))
    {
        var writer = new FileStream(outputPath, FileMode.Create, FileAccess.Write);

        int bytesPerMillisecond = reader.WaveFormat.AverageBytesPerSecond / 1000;
        long startPosition = (long)(startTime * 1000) * bytesPerMillisecond;
        long endPosition = (long)(endTime * 1000) * bytesPerMillisecond;

        byte[] buffer = new byte[4096];
        int bytesRead;

        while ((bytesRead = reader.Read(buffer, 0, buffer.Length)) > 0)
        {
            if (reader.Position < startPosition || reader.Position > endPosition)
            {
                writer.Write(buffer, 0, bytesRead);
            }
        }

        writer.Close();
    }

    Console.WriteLine("Segment removed successfully!");
}


  


• How to Remove a Specific Segment from an Audio File Using Timestamps in C# ? [closed]

  8 février, par Hilal Khan

  I am working on a C# project where I need to remove a specific segment from an audio file (e.g., WAV, MP3) based on start and end timestamps, while keeping the rest of the audio intact.

  


  For example, given a 20-minute audio file, I want to remove the section from 17:00 to 19:00 and be left with a new audio file containing only 0:00-17:00 and 19:00-20:00 (i.e., keeping the parts before and after the cut).

  


  I have used NAudio and FFmpeg to trim a file by cutting from the start or end, but I only get my desired snippet as a separate file which is not what I am looking for as I want it to be removed from the audio itself

  


  Heres what I have so far :

  


  static void RemoveSegment(string inputPath, string outputPath, double startTime, double endTime)
{
    using (var reader = new Mp3FileReader(inputPath))
    {
        var writer = new FileStream(outputPath, FileMode.Create, FileAccess.Write);

        int bytesPerMillisecond = reader.WaveFormat.AverageBytesPerSecond / 1000;
        long startPosition = (long)(startTime * 1000) * bytesPerMillisecond;
        long endPosition = (long)(endTime * 1000) * bytesPerMillisecond;

        byte[] buffer = new byte[4096];
        int bytesRead;

        while ((bytesRead = reader.Read(buffer, 0, buffer.Length)) > 0)
        {
            if (reader.Position < startPosition || reader.Position > endPosition)
            {
                writer.Write(buffer, 0, bytesRead);
            }
        }

        writer.Close();
    }

    Console.WriteLine("Segment removed successfully!");
}