FFMpegCore/FFMpegCore/FFMPEG/Argument/FFArgumentBuilder.cs

using System;
using System.Linq;

namespace FFMpegCore.FFMPEG.Argument
{
    /// <summary>
    /// Builds parameters string from <see cref="ArgumentContainer"/> that would be passed to ffmpeg process
    /// </summary>
    public class FFArgumentBuilder : IArgumentBuilder
    {
        /// <summary>
        /// Builds parameters string from <see cref="ArgumentContainer"/> that would be passed to ffmpeg process
        /// </summary>
        /// <param name="container">Container of arguments</param>
        /// <returns>Parameters string</returns>
        public string BuildArguments(ArgumentContainer container)
        {
            if (!container.ContainsInputOutput())
                throw new ArgumentException("No input or output parameter found", nameof(container));

            return string.Join(" ", container.Select(argument => argument.Value.GetStringValue()));
        }
    }
}