void ConstructProbeArguments()
{
//probeArguments.AddArg("-show_streams");
// Input file - use short name to avoid UTF-8 issues
string sInputFile = Functions.FileWriter.GetShortPathName(InputFile);
string quotedInputFile = "\"" + sInputFile + "\"";
probeArguments.AddArgCouple("-i", quotedInputFile);
// Redirect to temp file
string quotedTempFile = "\"" + TempFile + "\"";
probeArguments.AddArgCouple(">", quotedTempFile);
probeArguments.AddArg("2>&1"); //http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/redirection.mspx?mfr=true
}
/*
* C:\Program Files (x86)\AirVideoServer\ffmpeg.exe"
* --segment-length 4
* --segment-offset 188
* --conversion-id 548cf790-c04f-488a-96be-aae2968f272bdefd0e1d-2bdf-457d-ab15-3eb6c51ccf85
* --port-number 46631
* -threads 4
* -flags +loop
* -g 30 -keyint_min 1
* -bf 0
* -b_strategy 0
* -flags2 -wpred-dct8x8 -cmp +chroma -deblockalpha 0 -deblockbeta 0 -refs 1 -coder 0 -me_range 16 -subq 5 -partitions +parti4x4+parti8x8+partp8x8
* -trellis 0
* -sc_threshold 40 -i_qfactor 0.71 -qcomp 0.6 -map 0.1:0.1 -map 0.0:0.0 -ss 188.0
* -vf "crop=720:572:0:2, scale=568:320"
* -aspect 720:576
* -y
* -async 1
* -f mpegts
* -vcodec libx264
* -bufsize 1024k
* -b 1200k
* -bt 1300k
* -qmax 48
* -qmin 2
* -r 25.0
* -acodec libmp3lame
* -ab 192k
* -ar 48000
* -ac 2
*/
void ConstructArguments()
{
// Use either the standard ffmpeg template or a custom one
string strFFMpegTemplate = (string.IsNullOrWhiteSpace(EncodingParameters.CustomFFMpegTemplate)) ?
@"{THREADS} {H264PROFILE} {H264LEVEL} -flags +loop -g 30 -keyint_min 1 -bf 0 -b_strategy 0 -flags2 -wpred-dct8x8 -cmp +chroma -deblockalpha 0 -deblockbeta 0 -refs 1 {MOTIONSEARCHRANGE} {SUBQ} {PARTITIONS} -trellis 0 -coder 0 -sc_threshold 40 -i_qfactor 0.71 -qcomp 0.6 -qdiff 4 -rc_eq 'blurCplx^(1-qComp)' {MAPPINGS} {STARTTIME} {INPUTFILE} {ASPECT} {FRAMESIZE} {DEINTERLACE} -y {AUDIOSYNC} -f mpegts -vcodec libx264 {VIDEOBITRATE} {VIDEOBITRATEDEVIATION} -qmax 48 -qmin 2 -r 25 {AUDIOCODEC} {AUDIOBITRATE} {AUDIOSAMPLERATE} {AUDIOCHANNELS} {VOLUMELEVEL}" :
EncodingParameters.CustomFFMpegTemplate;
// Segment length and offset
segmentArguments.AddArgCouple("--segment-length", EncodingParameters.SegmentDuration.ToString());
segmentArguments.AddArgCouple("--segment-offset", StartAtSeconds.ToString());
cmdArguments.AddArg(segmentArguments.ToString());
// Multi threads
strFFMpegTemplate = strFFMpegTemplate.Replace("{THREADS}", "-threads 4");
// Me Range
strFFMpegTemplate = strFFMpegTemplate.Replace("{MOTIONSEARCHRANGE}", ("-me_range " + EncodingParameters.MotionSearchRange.ToString()));
// SUBQ - important as setting it too high can slow things down
strFFMpegTemplate = strFFMpegTemplate.Replace("{SUBQ}", ("-subq " + EncodingParameters.X264SubQ.ToString()));
// Partitions
string strPartitions = (EncodingParameters.PartitionsFlags.Length > 0) ?
"-partitions " + EncodingParameters.PartitionsFlags : "";
strFFMpegTemplate = strFFMpegTemplate.Replace("{PARTITIONS}", strPartitions);
// Add Mappings
string strMapArgs = (string.IsNullOrEmpty(MapArgumentsString)) ? "" : MapArgumentsString;
strFFMpegTemplate = strFFMpegTemplate.Replace("{MAPPINGS}", strMapArgs);
// Start at : MUST BE BEFORE INPUT FILE FLAG -i *** !!!
string strStartTime = (StartAtSeconds <= 0) ? "" : ("-ss " + StartAtSeconds.ToString());
strFFMpegTemplate = strFFMpegTemplate.Replace("{STARTTIME}", strStartTime);
// Input file - make short to avoid issues with UTF-8 in batch files IT IS VERY IMPORTANT WHERE THIS GOES; AFTER SS BUT BEFORE VCODEC AND ACODEC
string shortInputFile = Functions.FileWriter.GetShortPathName(InputFile);
// Quotes around file
string quotedInputFile = "\"" + shortInputFile + "\"";
strFFMpegTemplate = strFFMpegTemplate.Replace("{INPUTFILE}", ("-i " + quotedInputFile));
// Aspect ratio and frame size
string strAspectRatio = (EncodingParameters.OutputSquarePixels) ? "-aspect 1:1" : "-aspect " + EncodingParameters.AspectRatio;
strFFMpegTemplate = strFFMpegTemplate.Replace("{ASPECT}", strAspectRatio);
string strFrameSize = "-s " + EncodingParameters.ConstrainedSize;
strFFMpegTemplate = strFFMpegTemplate.Replace("{FRAMESIZE}", strFrameSize);
// Deinterlace (experimental)
string strDeinterlace = (EncodingParameters.DeInterlace) ? "-deinterlace" : "";
strFFMpegTemplate = strFFMpegTemplate.Replace("{DEINTERLACE}", strDeinterlace);
// OPTIONAL FOR LATER: -vf "crop=720:572:0:2, scale=568:320"
// Think this means crop to the aspect ratio, then scale to the normal frame
// Audio sync amount
string strAudioSync = "-async " + AudioSyncAmount.ToString();
strFFMpegTemplate = strFFMpegTemplate.Replace("{AUDIOSYNC}", strAudioSync);
// Video bitrate
string strVideoBitRateOptions = "-bufsize " + EncodingParameters.VideoBitRate + " -b " + EncodingParameters.VideoBitRate; //cmdArguments.AddArgCouple("-maxrate", VideoBitRate);
strFFMpegTemplate = strFFMpegTemplate.Replace("{VIDEOBITRATE}", strVideoBitRateOptions);
// Max video bitrate (optional)
string strMaxVideoBitRate = "-maxrate " + EncodingParameters.VideoBitRate;
strFFMpegTemplate = strFFMpegTemplate.Replace("{MAXVIDEOBITRATE}", strMaxVideoBitRate);
string strVideoBitRateDeviation = "-bt " + EncodingParameters.BitRateDeviation;
strFFMpegTemplate = strFFMpegTemplate.Replace("{VIDEOBITRATEDEVIATION}", strVideoBitRateDeviation);
// Restrict H264 encoding level (e.g. for iPhone 3G)
string strH264Level = (EncodingParameters.X264Level > 0) ? ("-level " + EncodingParameters.X264Level.ToString()) : "";
strFFMpegTemplate = strFFMpegTemplate.Replace("{H264LEVEL}", strH264Level);
string strH264Profile = (string.IsNullOrWhiteSpace(EncodingParameters.X264Profile)) ? "" : "-profile " + EncodingParameters.X264Profile;
strFFMpegTemplate = strFFMpegTemplate.Replace("{H264PROFILE}", strH264Profile);
// Audio: MP3 - must be after input file flag -i //
string strAudioCodecOptions = "";
switch (EncodingParameters.AudioCodec)
{
case VideoEncodingParameters.AudioCodecTypes.AAC:
strAudioCodecOptions = "-acodec aac -strict experimental";
break;
default:
strAudioCodecOptions = "-acodec libmp3lame";
break;
//// "libfaac");
}
strFFMpegTemplate = strFFMpegTemplate.Replace("{AUDIOCODEC}", strAudioCodecOptions);
// Audio Bitrate
string strAudioBitRate = "-ab " + EncodingParameters.AudioBitRate;
strFFMpegTemplate = strFFMpegTemplate.Replace("{AUDIOBITRATE}", strAudioBitRate);
// Audio sample rate
string strAudioSampleRate = "-ar " + EncodingParameters.AudioSampleRate;
strFFMpegTemplate = strFFMpegTemplate.Replace("{AUDIOSAMPLERATE}", strAudioSampleRate);
// Force stereo
string strAudioChannels = "-ac 2";
strFFMpegTemplate = strFFMpegTemplate.Replace("{AUDIOCHANNELS}", strAudioChannels);
// Volume Level
string strVolumeBoost = "";
if (EncodingParameters.AudioVolumePercent != 100)
{
double fVolumeBytes = (256.0 * (EncodingParameters.AudioVolumePercent / 100.0));
int iVolumeBytes = Convert.ToInt32(fVolumeBytes);
strVolumeBoost = "-vol " + iVolumeBytes.ToString();
}
strFFMpegTemplate = strFFMpegTemplate.Replace("{VOLUMELEVEL}", strVolumeBoost);
// Pipe to segmenter (ie send to standard output now)
strFFMpegTemplate = strFFMpegTemplate + " -";
// Commit - add to the arguments
cmdArguments.AddArg(strFFMpegTemplate);
}