Beispiel #1
0
        static string BuildCommandLine(VideoSegment segment)
        {
            var sb = new StringBuilder();

            sb.Append(" -hide_banner");
            sb.Append($" -ss {segment.CutFrom}");
            sb.Append($" -i \"{segment.SourceFile}\"");
            sb.Append($" -t {segment.CutDuration}");
            sb.Append(" -avoid_negative_ts make_zero");

            if (Settings.Instance.RemoveAudio)
            {
                sb.Append($" -an {segment.CutFrom}");
            }
            else
            {
                sb.Append(" -acodec copy");
            }

            sb.Append(" -vcodec copy");
            sb.Append(" -scodec copy");

            if (!Settings.Instance.IncludeAllStreams)
            {
                sb.Append(" -map 0");
            }

            sb.Append(" -map_metadata 0");
            sb.Append(" -ignore_unknown");

            sb.Append($" -y \"{segment.OutputFile}\"");

            return(sb.ToString());
        }
Beispiel #2
0
        public async Task Cut(VideoSegment segment)
        {
            var commandLine = BuildCommandLine(segment);

            using var ffmpegProcess = new Process
                  {
                      StartInfo = new ProcessStartInfo
                      {
                          Arguments              = commandLine,
                          FileName               = FfmpegStatics.FfmpegPath,
                          CreateNoWindow         = true,
                          RedirectStandardInput  = true,
                          RedirectStandardOutput = true,
                          RedirectStandardError  = true,
                          UseShellExecute        = false,
                          WindowStyle            = ProcessWindowStyle.Hidden
                      }
                  };

            ffmpegProcess.ErrorDataReceived += (sender, e) =>
            {
                if (e.Data == null)
                {
                    return;
                }
                var c = FfmpegStatics.ProgressRegex.Matches(e.Data);
                if (c.Count == 0 || c[0].Groups.Count < 2)
                {
                    return;
                }
                if (!TimeSpan.TryParse(c[0].Groups[1].Value, out TimeSpan progress))
                {
                    return;
                }

                Progress?.Invoke(new ProgressEventArgs(progress / segment.CutDuration));
            };

            await ffmpegProcess.WaitForExitAsync(null);

            if (ffmpegProcess.ExitCode != 0)
            {
                throw new Exception("Failed to cut. Uncheck 'Include all streams' and try again. Otherwise run ffmpeg yourself and see what reports to you");
            }
        }