# Output with Dolby Digital Plus (EC2, EAC3) codec
<a name="dolby-metadata-output-dolby-digital-plus-codec"></a>


| Named metadata parameters | Category | Field | API tag (stream\$1assembly\$1 audio\$1description\$1ac3\$1settings) | Default | 
| --- | --- | --- | --- | --- | 
| Dialogue Level | D | Dialnorm | dialnorm | Not set | 
| Channel Mode | D | Coding Mode | coding\$1mode | 3/2 – L,R,C,LS,Rs | 
| LFE Channel | D | When Coding Mode is 7 or 3/2, the LFE checkbox appears three lines below that checkbox. | lfe | Enabled | 
| Bitstream Mode | D | Bitstream Mode | bitstream\$1mode | Complete Main | 
| Line Mode Compression | D | DRC Line Mode Profile | drc\$1line  | Film Std. | 
| RF Mode Compression | D | DRC RF Mode Profile | drc\$1rf  | Film Std. | 
| RF Overmodulation Protection | D | No user control | - |   | 
| Center Downmix Level | D | No user control | - | -3dB | 
| Surround Downmix Level | D | Stereo Downmix | stereo\$1downmix | Not indicated | 
| Dolby Surround Mode | D | No user control | - | Disabled | 
| Audio Production Information | D | No user control | - | 0 (does not exist) | 
| Mix Level | D | No user control | - | Not set | 
| Room Type | D | No user control | - | Note set | 
| Copyright Bit | D | No user control | - | 0 | 
| Original Bitstream | D | No user control | - | 0 | 
| Preferred Stereo Downmix | D | No user control | - | Not indicated | 
| Lt/Rt Center Downmix Level | D | Lt/Rt Center Mix Level | lt\$1rt\$1center\$1mix\$1level | -3.0 dB | 
| Lt/Rt Surround Downmix Level | D | Lt/Rt Surround Mix Level | lt\$1rt\$1surround\$1mix\$1level | -3.0 dB | 
| Lo/Ro Center Downmix Level | D | Lo/Ro Center Mix Level | lo\$1ro\$1center\$1mix\$1level | -3.0 dB | 
| Lo/Ro Surround Downmix Level | D | Lo/Ro Surround Mix Level | lo\$1ro\$1surround\$1mix\$1level | -3.0 dB | 
| Dolby Surround EX Mode | D | Surround EX Mode | surround\$1ex\$1mode | Disabled | 
| A/D Converter Type | D | No user control |   | 0 (standard) | 
| DC Filter | EC | CD Highpass Filter | dc\$1filter | Enabled | 
| LFE Lowpass Filter | EC | LFE Filter | lfe\$1filter | Enabled | 
| Surround 3 dB Attenuation | EC | 3 dB Attenuation | attenuate\$13\$1db | Disabled | 
| Surround Phase Shift | EC | 90-degree Phase Shift | phase\$1shift\$190\$1degree | Enabled | 
| Surround Mode | D | When Coding Mode is 2/0, the Surround Mode checkbox appears. | surround\$1mode | Not indicated |