| Value | Meaning |
|---|---|
| AV_DOWNMIX_TYPE_UNKNOWN0 | < Not indicated. |
| AV_DOWNMIX_TYPE_LORO1 | < Lo/Ro 2-channel downmix (Stereo). |
| AV_DOWNMIX_TYPE_LTRT2 | < Lt/Rt 2-channel downmix, Dolby Surround compatible. |
| AV_DOWNMIX_TYPE_DPLII3 | < Lt/Rt 2-channel downmix, Dolby Pro Logic II compatible. |
| AV_DOWNMIX_TYPE_NB4 | < Number of downmix types. Not part of ABI. |
Possible downmix types.