private void SetAudioChannels()
{
m_objMPLaylist.AudioTrackGetByIndex(0, out string desc, out IMAudioTrack audioTrack);
audioTrack.TrackChannelsGet(out int nChIn, out int nChOutIdx, out int nChOut);
for (int i = 0; i < nChOut; i++)
{
int mute;
if (i < 2)
{
// switch on the required audio channels
mute = 0;
}
else
{
// set mute all other audio channels
mute = 1;
}
audioTrack.TrackMuteSet(i, mute, 0.0);
}
}
void StartBug()
{
// playlist initialization
M_VID_PROPS vidProps = new M_VID_PROPS();
vidProps.eVideoFormat = eMVideoFormat.eMVF_Custom;
MPlaylist.FormatVideoSet(eMFormatType.eMFT_Convert, ref vidProps);
M_AUD_PROPS audioProp = new M_AUD_PROPS();
audioProp.nChannels = 0; //because some writer codecs (such as mp3) do not support 16 audio channels.
MPlaylist.FormatAudioSet(eMFormatType.eMFT_Convert, audioProp);
// playlist cue
//set empty background. In this case playlist doesn't output anything until playback isn't started.
MItem myBack;
MPlaylist.PlaylistBackgroundSet(null, "", "", out myBack);
if (myBack != null)
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(myBack);
GC.Collect();
}
// set convert format
M_VID_PROPS mvid;
M_AUD_PROPS maud;
int fmtind;
string fmtname;
MPlaylist.FormatVideoGet(eMFormatType.eMFT_Output, out mvid, out fmtind, out fmtname);
MPlaylist.FormatAudioGet(eMFormatType.eMFT_Output, out maud, out fmtind, out fmtname);
MPlaylist.FormatVideoSet(eMFormatType.eMFT_Convert, ref mvid);
MPlaylist.FormatAudioSet(eMFormatType.eMFT_Convert, ref maud);
// set properties
MPlaylist.PropsSet("loop", "false");
MPlaylist.PropsSet("active_frc", "false");
MPlaylist.PropsSet("preview.drop_frames", "true");
vidProps.eVideoFormat = eMVideoFormat.eMVF_Custom;
MPlaylist.FormatVideoSet(eMFormatType.eMFT_Convert, ref vidProps);
int index = -1;
MItem item;
MPlaylist.PlaylistAdd(null, @"\\192.168.0.100\MLFiles\Trash\Roman\WorkFiles\FilesFromCostumer\2019.05.27 Etere31929\kom_mult_kosmik_007sh_s.mpg", "", ref index, out item);
// writer properties
MWriter.PropsSet("rate_control", "true");
MWriter.PropsSet("pull_mode", "false");
MWriter.PropsSet("external_process", "false");
//set audio mapping on first 2 channels only
string desc;
IMAudioTrack audioTrack;
MPlaylist.AudioTrackGetByIndex(0, out desc, out audioTrack);
int nChIn;
int nChOutIdx;
int nChOut;
audioTrack.TrackChannelsGet(out nChIn, out nChOutIdx, out nChOut);
for (int i = 0; i < nChOut; i++)
{
int mute;
if (i < 2)
{
// switch on the required audio channels
mute = 0;
}
else
{
// set mute all other audio channels
mute = 1;
}
audioTrack.TrackMuteSet(i, mute, 0.0);
}
string encodeConfig = @"format='mp4' start_timecode='00:00:00:00' video::codec='q264sw' video::size='640x360' video::b='1M' video::minrate='1M' video::maxrate='1M' video::ar='' video::ref_frames='3' video::profile='Baseline' video::level='4.1' video::rc_type='cbr' audio::codec='aac' audio::ar='48000'";
MWriter.WriterNameSet(@"\\192.168.0.100\MLFiles\Trash\Roman\WorkFiles\FilesFromCostumer\2019.05.27 Etere31929\test\" + count.ToString() + ".mp4", encodeConfig);
MWriter.ObjectStart(MPlaylist);
MPlaylist.FilePlayStart();
Marshal.ReleaseComObject(item);
//Marshal.ReleaseComObject(myBack);
GC.Collect();
}