<?xml version="1.0"?>
<query>
<userid><<id>></userid> <!-- required-->
<userkey><<key>></userkey> <!-- required-->
<action>[Action]</action> <!-- required-->
<source>[SourceFile]</source> <!-- required -->
<format>
<output>[OutputFormat]</output> <!-- required -->
<audio_stream>
<use_stream_id>[SourceMediaAudioStreamID]</use_stream_id>
<natural_order>[yes|no]</natural_order>
<language>[ISO639-2 language identifier]</language>
<!-- Common audio settings -->
<channel>
<id>[OutputChannelID]</id>
<in>
<id>[SourceTrackID:SourceChannelID]</id>
<gain>[ChannelGainLevel]</gain>
<program_id>[ProgramID]</program_id>
</in>
<in>
<!-- input channel params -->
</in>
<split_layout>[SplitLayout]</split_layout>
</channel>
<channel>
<!-- audio channel params -->
</channel>
<normalize>[yes|no]</normalize>
<layout>[AudioLayoutName]</layout>
<audio_channels_number>[ChannelsNumber]</audio_channels_number>
<automix_channels>[yes|no]</automix_channels>
<lfe_low>[LfeLow]</lfe_low>
<lfe_high>[LfeHigh]</lfe_high>
<split_channels>[yes|no]</split_channels>
<validate>
<on_error>[pass|fail|report]</on_error>
<repair>[yes|no]</repair>
<loudness_diff>[LoudnessDiff]<loudness_diff>
<stereo_diff>[StereoDiff]</stereo_diff>
<side_diff>[SideDiff]</side_diff>
</validate>
<metadata_channel_layout>[LayoutMetaData]</metadata_channel_layout>
<upmix_channel_gain>
<fl>[FLGain]</fl>
<fr>[FRGain]</fr>
<fc>[FCGain]</fc>
<lfe>[LFGain]</lfe>
<sl>[SLGain]</sl>
<sr>[SRGain]</sr>
<bl>[BLGain]</bl>
<br>[BRGain]</br>
<bc>[BCGain]</bc>
</upmix_channel_gain>
<disposition>[visual_impaired|hearing_impaired]</disposition>
<program_id>[ProgramID]</program_id>
<audio_tune>
<low_pass_filter>[FilterFrequency]</low_pass_filter>
<high_pass_filter>[FilterFrequency]</high_pass_filter>
<compand_points>[CompandFilter]</compand_points>
<channel>
<id>[ChannelID]</id>
<low_pass_filter>[FilterFrequency]</low_pass_filter>
<high_pass_filter>[FilterFrequency]</high_pass_filter>
<compand_points>[CompandFilter]</compand_points>
<gain>[ChannelGainLevel]</gain>
<max_peak>[MaxPeakLevel]</max_peak>
</channel>
<channel>
<!-- audio tune channel params -->
</channel>
</audio_tune>
<adjust_lra>[LRALevel]</adjust_lra>
<accepted_loudness_interval>[LoudnessInterval]</accepted_loudness_interval>
</audio_stream>
<!-- multiple audio_streams -->
<audio_stream>
<!-- audio_stream params -->
</audio_stream>
<!-- format params -->
</format>
</query>
{
"query": {
"userid": "<<id>>", // required
"userkey": "<<key>>", // required
"action": "[Action]", // required
"source": "[SourceFile]", // required
"format": {
"output": "[OutputFormat]", // required
"audio_stream": [
{
"use_stream_id": "[SourceMediaAudioStreamID]",
"natural_order": "[yes|no]",
"language": "[ISO639-2 language identifier]",
"channel": [
{
"id": "[OutputChannelID]",
"in": [
{
"id": "[SourceTrackID:SourceChannelID]",
"gain": "[ChannelGainLevel]",
"program_id": "[ProgramID]"
},
{
// input channel params
}
],
"split_layout": "[SplitLayout]"
},
{
// audio channel params
}
],
"normalize": "[yes|no]",
"layout": "[AudioLayoutName]",
"audio_channels_number": "[ChannelsNumber]",
"automix_channels": "[yes|no]",
"lfe_low": "[LfeLow]",
"lfe_high": "[LfeHigh]",
"split_channels": "[yes|no]",
"validate": {
"on_error": "[pass|fail|report]",
"repair": "[yes|no]",
"loudness_diff": "[LoudnessDiff]",
"stereo_diff": "[StereoDiff]",
"side_diff": "[SideDiff]"
},
"metadata_channel_layout": "[LayoutMetaData]",
"upmix_channel_gain": {
"fl": "[FLGain]",
"fr": "[FRGain]",
"fc": "[FCGain]",
"lfe": "[LFGain]",
"sl": "[SLGain]",
"sr": "[SRGain]",
"bl": "[BLGain]",
"br": "[BRGain]",
"bc": "[BCGain]"
},
"disposition": "[visual_impaired|hearing_impaired]",
"program_id": "[ProgramID]",
"audio_tune": {
"low_pass_filter": "[FilterFrequency]",
"high_pass_filter": "[FilterFrequency]",
"compand_points": "[CompandFilter]",
"channel": [
{
"id": "[ChannelID]",
"low_pass_filter": "[FilterFrequency]",
"high_pass_filter": "[FilterFrequency]",
"compand_points": "[CompandFilter]",
"gain": "[ChannelGainLevel]",
"max_peak": "[MaxPeakLevel]"
},
{
// audio tune channel params
}
]
},
"adjust_lra": "[LRALevel]",
"accepted_loudness_interval": "[LoudnessInterval]"
},
{
// audio_stream params
}
]
// format params
}
}
}
| Parameter | Description | Allowed Values | Default Values |
|---|---|---|---|
| Audio Stresm Parameters | |||
| use_stream_id | Specify the source media stream ID. | Non negative integer number | By default # of **<audio_stream /> param will be used. |
| natural_order | If set to yes then value of <use_stream_id /> will mean number of source's audio stream, not number of stream in all type streams list. | yes, no | no |
| language | Specify the track language. | A language code in 3 lowercase letters according to ISO639-2. | none |
| normalize | Enable the renormalization output track to avoid clipping noise. | yes, no | none |
| layout | Specify the output channels layout. | One of these channel layouts: mono — FC stereo — FL+FR 2.1 — FL+FR+LFE 3.0 — FL+FR+FC 3.0-back — FL+FR+BC 4.0 — FL+FR+FC+BC quad — FL+FR+BL+BR quad-side — FL+FR+SL+SR 3.1 — FL+FR+FC+LFE 5.0 — FL+FR+FC+BL+BR 5.0-side — FL+FR+FC+SL+SR 4.1 — FL+FR+FC+LFE+BC 5.1 — FL+FR+FC+LFE+BL+BR 5.1-side — FL+FR+FC+LFE+SL+SR 6.0 — FL+FR+FC+BC+SL+SR 6.0-front — FL+FR+FLC+FRC+SL+SR hexagonal — FL+FR+FC+BL+BR+BC 6.1 — FL+FR+FC+LFE+BC+SL+SR 6.1 — FL+FR+FC+LFE+BL+BR+BC 6.1-front — FL+FR+LFE+FLC+FRC+SL+SR 7.0 — FL+FR+FC+BL+BR+SL+SR 7.0-front — FL+FR+FC+FLC+FRC+SL+SR 7.1 — FL+FR+FC+LFE+BL+BR+SL+SR 7.1-wide — FL+FR+FC+LFE+BL+BR+FLC+FRC 7.1-wide-side — FL+FR+FC+LFE+FLC+FRC+SL+SR octagonal — FL+FR+FC+BL+BR+BC+SL+SR downmix — DL+DR | none |
| automix_channels | Automatically upmix or downmix audio stream to the specified number of channels in <audio_channels_number /> | yes, no | no |
| lfe_low | LFE low cut off frequency | Integer number between 3 and 255 | 20 |
| lfe_high | LFE high cut off frequency | Integer number between 3 and 512 | 120 |
| split_channels | Mux PCM audio stream channels into output as individual tracks. | yes, no | no |
| program_id | Output stream program id | Non-negative integer number | none |
| adjust_lra | LRA value audio normalization that would be applied for large audio streams | Positive float number between 1 and 20 inclusive | none |
| accepted_loudness_interval | Loudness interval of iterative loudness normalization for large audio streams | Positive float number between 0.1 and 1 inclusive | 1 |
| Output Audio Channel Parameters | |||
| id | Specify the output channel ID. | Channel number or one of these channel names: FL — front left FR — front right FC — front center LFE — low frequency BL — back left BR — back right FLC — front left-of-center FRC — front right-of-center BC — back center SL — side left SR — side right TC — top center TFL — top front left TFC — top front center TFR — top front right TBL — top back left TBC — top back center TBR — top back right DL — downmix left DR — downmix right WL — wide left WR — wide right SDL — surround direct left SDR — surround direct right LFE2 — low frequency 2 | none |
| split_layout | Set stream layout name for if <split_channels />set to yes | fl, fr, fc, lfe, bl, br, flc, frc, bc, sl, sr, tc, tfl, tfc, tfr, tbl, tbc, tbr, dl, dr, wl, wr, sdl, sdr, rsl, rsr, lw, rw, lfe2, lt, rt, - | none |
| Input Audio Channel Parameters | |||
| id | Specify input audio channel ID. | Input channel ID in format [track_id]:[channel_id] | none |
| gain | Sepcify the input audio channel gain level. | Float positive number from 0 to 1 | none |
| program_id | Input channel program id | Non-negative integer number | none |
| Validate Parameters | See dedicated article | ||
| metadata_channel_layout | Force channel layout value in the stream metadata | For mov and dnxhd output format: c – C, l_r – L R, l_r_head – L R Head, lt_rt – Lt Rt, m_s – M S, x_y – X Y, w_x_y_z – W X Y Z, l_r_ls_rs – L R Ls Rs, l_r_lrs_rrs_c – L R Lrs Rrs C, l_r_lrs_rrs_c_cs – L R Lrs Rrs C Cs, l_r_lrs_rrs_c_crs_ls_rs – L R Lrs Rrs C Crs Ls Rs, l_r_lrs_rrs_vhl_vhr_vhlrs_vhrrs – L R Lrs Rrs Vhl Vhr Vhlrs Vhrrs, l_r_c – L R C, c_l_r – C L R, l_r_c_cs – L R C Cs, c_l_r_cs – C L R Cs, l_r_c_ls_rs – L R C Ls Rs, l_r_ls_rs_c – L R Ls Rs C, l_c_r_ls_rs – L C R Ls Rs, c_l_r_ls_rs – C L R Ls Rs, l_r_c_lfe_ls_rs – L R C LFE Ls Rs, l_r_ls_rs_c_lfe – L R Ls Rs C LFE, l_c_r_ls_rs_lfe – L C R Ls Rs LFE, c_l_r_ls_rs_lfe – C L R Ls Rs LFE, l_r_c_lfe_ls_rs_cs – L R C LFE Ls Rs Cs, l_r_c_lfe_ls_rs_lc_rc – L R C LFE Ls Rs Lc Rc, c_lc_rc_l_r_ls_rs_lfe – C Lc Rc L R Ls Rs LFE, l_r_c_lfe_ls_r_rls_rrs – L R C LFE Ls R Rls Rrs, l_r_ls_rs_c_lfe_lc_rc – L R Ls Rs C LFE Lc Rc, l_r_c_lfe_ls_rs_lt_rt – L R C LFE Ls Rs Lt Rt, l_r_cs – L R Cs, l_r_lfe – L R LFE, l_r_lfe_cs – L R LFE Cs, l_r_lfe_ls_rs – L R LFE Ls Rs, l_r_c_lfe – L R C LFE, l_r_c_lfe_cs – L R C LFE Cs, l_r_ls_rs_lfe – L R Ls Rs LFE, l_r_ls_rs_c_cs – L R Ls Rs C Cs, l_r_ls_rs_c_rls_rrs – L R Ls Rs C Rls Rrs, c_l_r_ls_rs_cs – C L R Ls Rs Cs, c_l_r_ls_rs_cs_lfe – C L R Ls Rs Cs LFE, c_l_r_ls_rs_rls_rrs – C L R Ls Rs Rls Rrs, c_l_r_ls_rs_rls_rrs_cs – C L R Ls Rs Rls Rrs Cs, l_r_c_vhc_lsd_rsd_ls_rs_vhl_vhr_lw_rw_csd_cs_lfe1_lfe2 – L R C Vhc Lsd Rsd Ls Rs Vhl Vhr Lw Rw Csd Cs LFE1 LFE2, l_r_c_vhc_lsd_rsd_ls_rs_vhl_vhr_lw_rw_csd_cs_lfe1_lfe2_lc_rc_hi_vi_haptic – L R C Vhc Lsd Rsd Ls Rs Vhl Vhr Lw Rw Csd Cs LFE1 LFE2 Lc Rc HI VI Haptic For mxf_op1a output format: L, FL, R, FR, C, FC, LFE, Ls, BL, Rs, BR, Lc, FLC, RC, FRC, Cs, BC, Lsd, SL, Rsd, SR, Ts, TC, Ltf, TFL, Ctf, TFC, Rtf, TFR, Ltr, Trl, TBL, Ctr, Trc, TBC, Rtr, Trr, TBR, Lts, TSL, Lw, Rw, LFE2, Lrs, Rrs, Lt, Rt, M | none |
| disposition | Audio stream disposition type | visual_impaired, hearing_impaired | none |
| Upmix Channel Gain Parameters | |||
| fl | Left channel gain | Float number between 0 and 1 inclusive | none |
| fr | Right channel gain | Float number between 0 and 1 inclusive | none |
| fc | Center channel gain | Float number between 0 and 1 inclusive | none |
| lfe | LFE channel gain | Float number between 0 and 1 inclusive | none |
| sl | Side left channel gain | Float number between 0 and 1 inclusive | none |
| sr | Side right channel gain | Float number between 0 and 1 inclusive | none |
| bl | Back left channel gain | Float number between 0 and 1 inclusive | none |
| br | Back right channel gain | Float number between 0 and 1 inclusive | none |
| bc | Back center channel gain | Float number between 0 and 1 inclusive | none |
| Audio Tune Parameters | |||
| low_pass_filter | Low Pass filter frequency | Non-negative integer number | none |
| high_pass_filter | High Pass filter frequency | Non-negative integer number | none |
| compand_points | Compand filter points separated by pipe symbol | Valid compand filter string | none |
| Audio Tune Channel Parameters | |||
| id | Channel ID starting from 0 | Non-negative integer number | none |
| low_pass_filter | Low Pass filter frequency | Non-negative integer number | none |
| high_pass_filter | High Pass filter frequency | Non-negative integer number | none |
| compand_points | Compand filter points separated by pipe symbol | Valid compand filter string | none |
| gain | Channel gain level | Float number between -100 and 100 exclusive | none |
| max_peak | Maximum true peak level. Channel volume will be decreased to hit the specified value if the channel peak value overshoot the limit | Negative float number greater than -100 | none |
For lfe_low and lfe_hight
<lfe_low /> and <lfe_hight /> parameters will be allied only in case of channel upmixing.
For split_channels
The <split_channels /> parameter available only for PCM audio codecs.
For metadata_channel_layout
The <metadata_channel_layout /> parameter available only for mov, dnxhd and mxf_op1a output formats.
For adjust_lra and accepted_loudness_interval
The <adjust_lra /> and <accepted_loudness_interval /> parameters only applied for DEE processing for large audio streams with size over 4GB
For accepted_loudness_interval
We discovered, that sometimes loudness normalization performed by our default audio encoder doesn't work well, especially on complex audio with a high loudness range. Therefore an iterative loudness correction procedure may be applied. The accepted_loudness_interval parameter tunes the exit criteria for this procedure by setting an acceptable loudness interval. Corresponding to the EBU recommendation we use default value equals to 1.