| FFmpeg AVChannel | WAVE dwChannelMask | Apple AudioChannelLabel | Apple Notes |
|---|---|---|---|
| AV_CHAN_FRONT_LEFT | SPEAKER_FRONT_LEFT | kAudioChannelLabel_Left | |
| AV_CHAN_FRONT_RIGHT | SPEAKER_FRONT_RIGHT | kAudioChannelLabel_Right | |
| AV_CHAN_FRONT_CENTER | SPEAKER_FRONT_CENTER | kAudioChannelLabel_Center | |
| AV_CHAN_LOW_FREQUENCY | SPEAKER_LOW_FREQUENCY | kAudioChannelLabel_LFEScreen | |
| AV_CHAN_BACK_LEFT | SPEAKER_BACK_LEFT | kAudioChannelLabel_LeftSurround | |
| AV_CHAN_BACK_RIGHT | SPEAKER_BACK_RIGHT | kAudioChannelLabel_RightSurround | |
| AV_CHAN_FRONT_LEFT_OF_CENTER | SPEAKER_FRONT_LEFT_OF_CENTER | kAudioChannelLabel_LeftCenter | |
| AV_CHAN_FRONT_RIGHT_OF_CENTER | SPEAKER_FRONT_RIGHT_OF_CENTER | kAudioChannelLabel_RightCenter | |
| AV_CHAN_BACK_CENTER | SPEAKER_BACK_CENTER | kAudioChannelLabel_CenterSurround | WAVE: "Back Center" or plain "Rear Surround" |
| AV_CHAN_SIDE_LEFT | SPEAKER_SIDE_LEFT | kAudioChannelLabel_LeftSurroundDirect | |
| AV_CHAN_SIDE_RIGHT | SPEAKER_SIDE_RIGHT | kAudioChannelLabel_RightSurroundDirect | |
| AV_CHAN_TOP_CENTER | SPEAKER_TOP_CENTER | kAudioChannelLabel_TopCenterSurround | |
| AV_CHAN_TOP_FRONT_LEFT | SPEAKER_TOP_FRONT_LEFT | kAudioChannelLabel_VerticalHeightLeft | WAVE: "Top Front Left" |
| AV_CHAN_TOP_FRONT_CENTER | SPEAKER_TOP_FRONT_CENTER | kAudioChannelLabel_VerticalHeightCenter | WAVE: "Top Front Center" |
| AV_CHAN_TOP_FRONT_RIGHT | SPEAKER_TOP_FRONT_RIGHT | kAudioChannelLabel_VerticalHeightRight | WAVE: "Top Front Right" |
| AV_CHAN_TOP_BACK_LEFT | SPEAKER_TOP_BACK_LEFT | kAudioChannelLabel_TopBackLeft | |
| AV_CHAN_TOP_BACK_CENTER | SPEAKER_TOP_BACK_CENTER | kAudioChannelLabel_TopBackCenter | |
| AV_CHAN_TOP_BACK_RIGHT | SPEAKER_TOP_BACK_RIGHT | kAudioChannelLabel_TopBackRight |
| Additional FFmpeg AVChannels |
|---|
| /** Stereo downmix. */ |
| AV_CHAN_STEREO_LEFT |
| /** See above. */ |
| AV_CHAN_STEREO_RIGHT |
| AV_CHAN_WIDE_LEFT |
| AV_CHAN_WIDE_RIGHT |
| AV_CHAN_SURROUND_DIRECT_LEFT |
| AV_CHAN_SURROUND_DIRECT_RIGHT |
| AV_CHAN_LOW_FREQUENCY_2 |
| AV_CHAN_TOP_SIDE_LEFT |
| AV_CHAN_TOP_SIDE_RIGHT |
| AV_CHAN_BOTTOM_FRONT_CENTER |
| AV_CHAN_BOTTOM_FRONT_LEFT |
| AV_CHAN_BOTTOM_FRONT_RIGHT |