FLV files can contain a SCRIPTDATA tag named onMetadata, documented in section E.5 of the FLV and F4V specification [
| MAWG | Relation | Flash (FLV) | How to do the mapping | Datatype | XPath | RDF tested |
|---|---|---|---|---|---|---|
| Descriptive Properties (Core Set) | ||||||
| Identification | ||||||
| identifier | N/A | N/A | N/A | |||
| Content description | ||||||
| description | N/A | N/A | N/A | |||
| Technical Properties | ||||||
| frameSize | exact | The width and height fields from the onMetadata tag. The units are always pixels. | DOUBLE, 64-bit IEEE float | N/A | yes | |
| compression | Not directly represented. Implicit in the audiocodecid and videocodecid fields from the onMetadata tag. | N/A | no | |||
| duration | exact | The duration field from the onMetadata tag. The unit is always seconds. | DOUBLE, 64-bit IEEE float | N/A | yes | |
| format | exact | video/x-flv | static | MIME type | N/A | yes |
| samplingRate | exact | The audiosamplerate field from the onMetadata tag. The unit is always samples per second. | DOUBLE, 64-bit IEEE float | N/A | yes | |
| frameRate | exact | The framerate field from the onMetadata tag. The unit is always frames per second. | DOUBLE, 64-bit IEEE float | N/A | yes | |
| averageBitRate | exact | The sum of the audiodatarate and videodatarate fields from the onMetadata tag. The units are always kilobits per second. | DOUBLE, 64-bit IEEE float | N/A | no | |
| numTracks | exact | FLV files contain at most 1 audio track and at most 1 video track. There are 1-bit flags in the FLV header telling if audio or video are present. | N/A | no | ||