media-tagging 2.5.2

Performs tagging of image and videos based on various taggers

Media Tagger

Problem statement

When analyzing large amount of creatives of any nature (being images and videos) it might be challenging to quickly and reliably understand their content and gain insights.

Solution

media-tagger performs tagging of image and videos based on various taggers

• simply provide a path to your media files and media-tagger will do the rest.

Deliverable (implementation)

media-tagger is implemented as a:

• library - Use it in your projects with a help of media_tagging.MediaTaggingService class.
• CLI tool - media-tagger tool is available to be used in the terminal.
• HTTP endpoint - media-tagger can be easily exposed as HTTP endpoint.
• Langchain tool - integrate media-tagger into your Langchain applications.

Deployment

Prerequisites

• Python 3.10+
• A GCP project with billing account attached
• API Enabled:
  • For google-cloud tagger: Video Intelligence API and Vision API enabled.
  • For gemini tagger: Vertex AI API enabled.
• Environmental variables specified:
  • GOOGLE_API_key to access to access Google Gemini.

    export GOOGLE_API_KEY=<YOUR_API_KEY_HERE>
    

  • GOOGLE_CLOUD_PROJECT - points the Google Cloud project with Vertex AI API enabled.

    export GOOGLE_CLOUD_PROJECT=<YOUR_PROJECT_HERE>
    

Installation

Install media-tagger with pip install media-tagging[all] command.

Alternatively you can install subsets of media-tagging library:

• media-tagging[google-cloud] - tagging videos and images with Google Cloud APIs.
  • media-tagging[google-cloud-vision] - only for tagging images.
  • media-tagging[google-cloud-videointelligence] - only for tagging videos.
• media-tagging[gemini] - tagging videos and images with Vertex AI API.
  • media-tagging[google-genai] - only for tagging images via Gemini.
  • media-tagging[google-vertexai] - only for tagging videos via Gemini.
• media-tagging[langchain] - tagging videos and images with Langchain.

Usage

Tagging media

This section is focused on using media-tagger as a CLI tool. Check library, http endpoint, langchain tool sections to learn more.

Once media-tagger is installed you can call it:

media-tagger ACTION MEDIA_PATHs \
  --media-type <MEDIA_TYPE> \
  --tagger <TAGGER_TYPE> \
  --db-uri=<CONNECTION_STRING> \
  --writer <WRITER_TYPE> \
  --output <OUTPUT_FILE_NAME>

where:

• ACTION - either tag or describe.
• MEDIA_PATHs - names of files for tagging (can be urls) separated by spaces.

Instead of reading MEDIA_PATHs as positional arguments you can read them from a file using
--input FILENAME.CSV argument. Use --input.column_name=NAME_OF_COLUMN to specify column name in the file.

• <MEDIA_TYPE> - type of media (YOUTUBE_VIDEO, VIDEO, IMAGE, TEXT).
• <TAGGER_TYPE> - name of tagger, supported options.

Tagger can be customized via tagger.option=value syntax. I.e. if you want to request a specific number of tags you can add --tagger.n-tags=100 CLI flag.

• <CONNECTION_STRING> - Optional connection string to the database with tagging results (i.e. sqlite:///tagging.db). If this parameter is set make sure that DB exists.

To create an empty Sqlite DB execute touch database.db.

• <WRITER_TYPE> - writer identifier (check available options at garf-io library).
• <OUTPUT_FILE_NAME> - name of the file to store results of tagging (by default tagging_results).

Supported taggers

identifier	supported media types	tagging output	options
google-cloud	image, video	tag	n-tags=10
langchain	image, video	tag, description	n-tags=10, tags=tag1,tag2,tag3
gemini	image, video, youtube_video	tag, description	n-tags=10

Tagger customizations

• langchain and gemini taggers can use custom-prompt parameter to adjust built-in prompts.
  Add --tagger.custom-prompt=YOUR_PROMPT_HERE, where YOUR_PROMPT_HERE is either prompt or a file path (local or remote) with .txt extension.

  Example: --tagger.custom_prompt="Is this an advertising? Answer yes or no'

  • When passing custom prompt you can opt out of using built in schemas in media-tagger by using --tagger.no-schema=True or provide a custom schema via --tagger.custom_schema=/path/to/schema.json parameter.
• gemini tagger for video and youtube_video media types supports specifying VideoMetadata parameters (fps, start_offset, end_offset)

  Example: --tagger.fps=5

• gemini tagger can use n_runs=N parameter to repeat tagging process N times, i.e. --tagger.n_runs=10 will tag the same medium 10 times.

Loading tagging results

If you want to import tags to be used later, you can use media-loader utility.

media-loader PATH_TO_FILE \
  --media-type <MEDIA_TYPE> \
  --loader <LOADER_TYPE> \
  --db-uri=<CONNECTION_STRING> \
  --action <ACTION>

where:

• <MEDIA_TYPE> - type of media (YOUTUBE_VIDEO, VIDEO, IMAGE).

For YouTube file uploads specify YOUTUBE_VIDEO type.

• <LOADER_TYPE> - name of loader, currently only file is supported (data are saved to CSV).

Loader can be customized via loader.option=value syntax. I.e. if you want to change the default column name with media tags are located you can specify --loader.tag_name=new_column_name CLI flag.

• <CONNECTION_STRING> - Connection string to the database with tagging results (i.e. sqlite:///tagging.db). If this parameter is set make sure that DB exists.

To create an empty Sqlite DB execute touch database.db.

• ACTION - either tag or describe.

If loading tagging results with file loader, the CSV file should contains the following columns:

• media_url - location of medium (can be remote or local).
• tag - column that contains name of a tag.
• score - column that contains prominence of a tag in the media.