rtmp flv metadata

Metadata property name	Data type	Description
lastkeyframetimestamp	Number	The timestamp of the last video keyframe recorded.
width	Number	The width of the video, in pixels.
height	Number	The height of the video, in pixels.
videodatarate	Number	The video bit rate.
audiodatarate	Number	The audio bit rate.
framerate	Number	The frames per second at which the video was recorded.
creationdate	String	The creation date of the file.
createdby	String	The creator of the file.
audiocodecid	Number	The audio codec ID used in the file. Values are: 0 Uncompressed 1 ADPCM 2 MP3 5 Nellymoser 8 kHz Mono 6 Nellymoser 10 HE-AAC 11 Speex
videocodecid	Number	The video codec ID used in the file. Values are: 2 Sorenson H.263 3 Screen video 4 On2 VP6 5 On2 VP6 with transparency 7 H.264
audiodelay	Number	The delay introduced by the audio codec, in seconds.