meta1v is a command-line tool for viewing and manipulating metadata for Canon EOS-1V files of the EFD format.
Download the latest release for your platform from the releases page.
Extract the archive and optionally add the binary to your PATH:
tar -xzf meta1v_*.tar.gz
sudo mv meta1v /usr/local/bin/Requires Go 1.25.7 or later:
go install github.com/ma-tf/meta1v@latestMan pages are included in the release archives. To install them:
# After extracting the release archive
sudo cp man/*.1 /usr/local/share/man/man1/
sudo mandb # Update man database (Linux)
man meta1vView roll information from an EFD file:
meta1v roll list data.efdExport frame data to CSV:
meta1v frame export data.efd output.csvWrite EXIF metadata to an image:
meta1v exif data.efd 1 image.jpg- CLI Reference - Complete command reference
- Man pages - Use
man meta1vfor offline reference (after installation)
roll- List or export roll information from EFD filesframe- List or export frame information from EFD filesexif- Write EXIF metadata from EFD file to target image filecustomfunctions- List or export custom function settings from EFD filesfocusingpoints- Display autofocus point grids from EFD filesthumbnail- Display embedded thumbnail images from EFD files
Run meta1v --help for detailed usage information, or see the complete CLI reference.
meta1v can be configured via:
- Config file:
$HOME/.meta1v/config.yamlor./config.yaml - Environment variables: Prefix with
META1V_(e.g.,META1V_LOG_LEVEL=debug) - Command-line flags:
--strict,--config, etc.
Example configuration file (~/.meta1v/config.yaml):
log:
level: info
strict: false
timeout: 3m| Option | Type | Default | Description |
|---|---|---|---|
log.level |
string | warn |
Log level: debug, info, warn, error |
strict |
boolean | false |
Enable strict mode (fail on unknown metadata values) |
timeout |
duration | 3m |
Command execution timeout |
--config- Specify custom config file path-s, --strict- Enable strict mode-h, --help- Display help for any command
Copyright (C) 2026 Matt F
This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along with this program. If not, see https://www.gnu.org/licenses/.
To contribute to this project, you'll need:
- Go 1.25.7 or later
- go-licenses for dependency license tracking: go install github.com/google/go-licenses/v2@latest
The pre-commit hook automatically generates a NOTICE file with dependency licenses.