GIF Tags
This table lists information extracted from GIF images. See
http://www.w3.org/Graphics/GIF/spec-gif89a.txt for the official GIF89a
specification.
| 
| Tag Name | Writable | Values / Notes | 
|---|
 
| Comment | yes |  |  
| Duration | no | (duration of a single animation iteration) |  
| Extensions | - | --> GIF Extensions Tags |  
| FrameCount | no | (number of animated images) |  
| GIFVersion | no |  |  
| ScreenDescriptor | - | --> GIF Screen Tags |  
| Text | no | (text displayed in image) |  | 
Tags extracted from GIF89a application extensions.
Information extracted from the MIDI control block extension.
| 
| Index1 | Tag Name | Writable | Values / Notes | 
|---|
 
| 0 | MIDIControlVersion | no |  |  
| 1 | SequenceNumber | no |  |  
| 2 | MelodicPolyphony | no |  |  
| 3 | PercussivePolyphony | no |  |  
| 4 | ChannelUsage | no |  |  
| 6 | DelayTime | no |  |  | 
Information extracted from the "NETSCAPE2.0" animation extension.
| 
| Index1 | Tag Name | Writable | Values / Notes | 
|---|
 
| 1 | AnimationIterations | no |  |  | 
Information extracted from the GIF logical screen descriptor.
| 
| Index1 | Tag Name | Writable | Values / Notes | 
|---|
 
| 0 | ImageWidth | no |  |  
| 2 | ImageHeight | no |  |  
| 4.1 | HasColorMap | no | [val >> 7 & 0x1] 0 = No
 1 = Yes
 |  
| 4.2 | ColorResolutionDepth | no | [val >> 4 & 0x7] |  
| 4.3 | BitsPerPixel | no | [val & 0x7] |  
| 5 | BackgroundColor | no |  |  | 
(This document generated automatically by Image::ExifTool::BuildTagLookup)
Last revised Oct 24, 2018
<-- ExifTool Tag Names