public static void ParseOutputStream(Stream outputStream, out FFmpegEncodingInfo saveData, bool logMessages, bool logProgress)
        {
            StreamReader reader = new StreamReader(outputStream);
            saveData = new FFmpegEncodingInfo();

            bool aborted = false;
            string line;
            while ((line = reader.ReadLine()) != null) {
                try {
                    if (line.StartsWith("frame=")) {
                        // format of an output line (yes, we're doomed as soon as ffmpeg changes it output):
                        // frame=  923 fps=256 q=31.0 size=    2712kB time=00:05:22.56 bitrate= 601.8kbits/s
                        Match match = Regex.Match(line, @"frame=([ 0-9]*) fps=([ 0-9]*) q=[^ ]* L?size=([ 0-9]*)kB time=([0-9]{2}):([0-9]{2}):([0-9]{2})\.[0-9]{2} bitrate=([ .0-9]*)kbits/s", RegexOptions.IgnoreCase);
                        if (match.Success) {
                            lock (saveData) {
                                saveData.CurrentBitrate = Decimal.Parse(match.Groups[7].Value, System.Globalization.CultureInfo.InvariantCulture);
                                saveData.CurrentTime = Int32.Parse(match.Groups[4].Value) * 3600 + Int32.Parse(match.Groups[5].Value) * 60 + Int32.Parse(match.Groups[6].Value);
                                saveData.EncodedFrames = Int32.Parse(match.Groups[1].Value);
                                saveData.EncodingFPS = Int32.Parse(match.Groups[2].Value);
                                saveData.EncodedKb = Int32.Parse(match.Groups[3].Value);
                            }

                            if (!logProgress) {
                                //we don't want to log progress reports
                                continue;
                            }
                        }
                    } else if (line.StartsWith("video:")) {
                        //process the result line (e.g. video:5608kB audio:781kB global headers:0kB muxing overhead 13.235302%)
                        //line to see if it completed successfully
                        Match resultMatch = Regex.Match(line, @"video:([0-9]*)kB audio:([0-9]*)kB global headers:([0-9]*)kB muxing overhead[^%]*%", RegexOptions.IgnoreCase);
                        bool success = false;
                        if (resultMatch.Success) {
                            success = true;
                        }

                        lock (saveData) {
                            saveData.FinishedSuccessfully = success;
                        }
                    } else if (line.Contains("Application provided invalid, non monotonically increasing dts to muxer")) {
                        lock (saveData) {
                            saveData.EncodingErrors = saveData.EncodingErrors | FFMpegEncodingErrors.NonMonotonicallyIncreasingDts;
                        }
                    } else if (line.Contains("start time is not set in av_estimate_timings_from_pts")) {
                        lock (saveData) {
                            saveData.EncodingErrors = saveData.EncodingErrors | FFMpegEncodingErrors.StartTimeNotSetInEstimateTimingsFromPts;
                        }
                    } else if (line.Contains("use -vbsf h264_mp4toannexb")) {
                        lock (saveData) {
                            saveData.EncodingErrors = saveData.EncodingErrors | FFMpegEncodingErrors.UseVbsfH264Mp4ToAnnexb;
                        }
                    }

                    if (logMessages) {
                        Log.Trace(line);
                    }
                } catch (ThreadAbortException) {
                    // allow it to be used in a thread
                    aborted = true; ;
                    reader.Close();
                    break;
                } catch (Exception e) {
                    aborted = true;
                    Log.Error("Failure during parsing of ffmpeg output", e);
                }
            }

            if (aborted) {

            }
            reader.Close();
            return;
        }
 public static void ParseOutputStream(Stream outputStream, out FFmpegEncodingInfo saveData)
 {
     ParseOutputStream(outputStream, out saveData, true, false);
 }