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.
本文介绍了音视频文件中常见的元数据属性及其含义，包括视频尺寸、比特率、帧速率等技术参数，以及音频编解码器和视频编解码器的标识。
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