Movie audio metering
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QMedia
Movie audio metering
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| QM_GetAudioChannelLayout(movieRef; soundTrackID; channelLabels):error | |||
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movieRef | Longint | Movie reference |
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soundTrackID | Longint | Audio track ID |
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channelLabels | Array longint | Channel labels |
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error | Longint | Error result |
Returns the layout of the channels in a sound track.
Parameter movieRef is the reference to the movie instance. The movie reference must have been previously obtained with a call to QM_NewMovieFromFile or QM_NewMovieFromURL.
Parameter soundTrackID is the ID of the sound track.
Parameter channelLabels receives the label identifiers describing the layout of the channels in the sound track.
The following label identifiers are available as constants:
| qm_AudioChannelUnknown | -1 | Unknown channel |
| qm_AudioChannelUnused | 0 | Unused channel |
| qm_AudioChannelMono | 42 | Mono channel |
| qm_AudioChannelLeft | 1 | Left channel |
| qm_AudioChannelRight | 2 | Right channel |
| qm_AudioChannelCenter | 3 | Center channel |
| qm_AudioChannelLFEScreen | 4 | LFE screen channel |
| qm_AudioChannelLeftSurround | 5 | Left surround channel |
| qm_AudioChannelRightSurround | 6 | Right surround channel |
| qm_AudioChannelLeftCenter | 7 | Left/center channel |
| qm_AudioChannelRightCenter | 8 | Right/center channel |
| qm_AudioChannelCenterSurround | 9 | Center surround channel |
| qm_AudioChannelRearSrndLeft | 33 | Rear/left surround channel |
| qm_AudioChannelRearSrndRight | 34 | Rear/right surround channel |
| qm_AudioChannelLeftTotal | 38 | Left total channel |
| qm_AudioChannelRightTotal | 39 | Right total channel |
| qm_AudioChannelLeftSrndDrkt | 10 | Left surround direct channel |
| qm_AudioChannelRightSrndDrkt | 11 | Right surround direct channel |
| qm_AudioChannelTopCenterSrnd | 12 | Top center surround channel |
| qm_AudioChannelVertHeightLeft | 13 | Vertical height left channel |
| qm_AudioChannelVertHeightRght | 15 | Vertical height right channel |
| qm_AudioChannelVertHeightCntr | 14 | Vertical height center channel |
| qm_AudioChannelTopBackLeft | 16 | Top back left channel |
| qm_AudioChannelTopBackCenter | 17 | Top back center channel |
| qm_AudioChannelTopBackRight | 18 | Top back right channel |
| qm_AudioChannelAmbisonic_W | 200 | Ambisonic channel W |
| qm_AudioChannelAmbisonic_X | 201 | Ambisonic channel X |
| qm_AudioChannelAmbisonic_Y | 202 | Ambisonic channel Y |
| qm_AudioChannelAmbisonic_Z | 203 | Ambisonic channel Z |
| qm_AudioChannelMS_Mid | 204 | Mid/Side recording middle channel |
| qm_AudioChannelMS_Side | 205 | Mid/Side recording side channel |
| qm_AudioChannelXY_X | 206 | X-Y recording X channel |
| qm_AudioChannelXY_Y | 207 | X-Y recording Y channel |
| qm_AudioChannelHeadphLeft | 301 | Left headphones channel |
| qm_AudioChannelHeadphRight | 302 | Right headphones channel |
| qm_AudioChannelDiscrete0 | 0x00010000 | Discete channel 0 |
| qm_AudioChannelDiscrete1 | 0x00010001 | Discete channel 1 |
| qm_AudioChannelDiscrete2 | 0x00010002 | Discete channel 2 |
| qm_AudioChannelDiscrete3 | 0x00010003 | Discete channel 3 |
| qm_AudioChannelDiscrete4 | 0x00010004 | Discete channel 4 |
| qm_AudioChannelDiscrete5 | 0x00010005 | Discete channel 5 |
| qm_AudioChannelDiscrete6 | 0x00010006 | Discete channel 6 |
| qm_AudioChannelDiscrete7 | 0x00010007 | Discete channel 7 |
| qm_AudioChannelDiscrete8 | 0x00010008 | Discete channel 8 |
| qm_AudioChannelDiscrete9 | 0x00010009 | Discete channel 9 |
| qm_AudioChannelDiscrete10 | 0x0001000A | Discete channel 10 |
| qm_AudioChannelDiscrete11 | 0x0001000B | Discete channel 11 |
| qm_AudioChannelDiscrete12 | 0x0001000C | Discete channel 12 |
| qm_AudioChannelDiscrete13 | 0x0001000D | Discete channel 13 |
| qm_AudioChannelDiscrete14 | 0x0001000E | Discete channel 14 |
| qm_AudioChannelDiscrete15 | 0x0001000F | Discete channel 15 |
| qm_AudioChannelDiscrete65535 | 0x0001FFFF | Discete channel 65535 |
Related commands
| QM_GetAudioSampleInfo | Returns information about the samples in a sound track. |