Experimental:File Metadata

Experimental - Skipping Glossary

Movie File Out TOP and Audio File Out CHOP allow users to provide a Table DAT of metadata key value pairs to be written to the file. Similarly Movie File In TOP, Audio File In CHOP and Media File Info DAT can read this metadata in. Below is a list of valid key values for the metadata table.

File Metadata

Audio File Out Formats

• OGG: Supports arbitrary key value pairs stored as a VorbisComment
• MP3: Supports metadata stored in its ID3v2 tag
• AIFF: Supports metadata stored in its INFO chunk
• WAV: Supports metadata stored in RIFF format

Formats

Tag	MP3	WAV	AIFF
copyright	✅	✅	✅
comment	✅	✅	✅
title	✅	✅
author	✅	✅
album	✅		✅
genre	✅		✅
encoder	✅		✅
language	✅		✅
artist	✅		✅
date	✅		✅
composer	✅
album_artist	✅
performer	✅
disc	✅
publisher	✅
track	✅
rating	✅
lyrics	✅
compilation	✅
creation_time	✅
album-sort	✅
artist-sort	✅
title-sort	✅
description	✅
grouping	✅
network	✅
synopsis	✅
show	✅
episode_id	✅
year	✅

Movie File Out Formats

• VP8/VP9: Supports arbitrary key value pairs in its Tag Directory
• Movie formats support the following

Supported tags

artist	title	author	date
comment	description	genre	copyright

• OpenEXR supports arbitrary key value pairs
• TIFF supports Exif metadata
• JPEG supports Exif metadata
• PNG supports Exif metadata

Exif Metadata

• JPEG and PNG are using libexif to generate Exif data and inserts them into its proper header when recording. Supported tags
• TIFF is using libtiff to manage its Exif writing. Supported tags
• Tags supporting multiple components can specify the components in a comma separated entry. i.e. 43,39,52.44

An example Exif headersdat

ImageDescription	my description
GPSLatitudeRef	N
GPSLatitude	43,38,52.44
GPSLongitudeRef	W
GPSLongitude	79,23,42.072
ISOSpeed	800
ApertureValue	1.4
ShutterSpeedValue	1/300

See Also

• Movie File Out TOP, Audio File Out CHOP,Movie File In TOP, Audio File In CHOP, Media File Info DAT

Each operator can have a set of text strings that are its "tags". You can set them and search for them within TouchDesigner.