Implement new re-transcoding API changes

[KMchaudhary]

This pull request refactors how retranscoding requests are handled.

Retranscoding Job Handling

• The logic in wp_media_transcoding (in class-rtgodam-transcoder-handler.php) now checks for an existing rtgodam_transcoding_job_id and, if present, uses a PUT request to update the existing job instead of always creating a new one with a POST request. The API endpoint is also updated to include the job ID when updating. [1] [2] [3]
• The REST API retranscoding endpoint (class-transcoding.php) no longer deletes the existing rtgodam_transcoding_job_id before retranscoding, allowing the update logic to function as intended.
• The AJAX handler method ajax_process_retranscode_request and its associated wp_ajax_retranscodemedia action have been removed from class-rtgodam-retranscodemedia.php, simplifying the retranscoding interface and removing duplicate logic. [1] [2]

Related Issue

• [EPIC] Virtual Media ID Issues #747

[Copilot]

Pull Request Overview

This pull request refactors retranscoding requests to use a PUT/POST pattern for updating existing jobs rather than always creating new ones, and removes the AJAX handler for retranscoding.

• Replaces job creation logic with conditional PUT/POST based on existing job ID
• Removes deletion of transcoding job ID to allow job updates
• Eliminates duplicate AJAX handler for retranscoding requests

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
inc/classes/rest-api/class-transcoding.php	Removes deletion of transcoding job ID to preserve it for updates
admin/class-rtgodam-transcoder-handler.php	Updates transcoding logic to use PUT for existing jobs and POST for new ones
admin/class-rtgodam-retranscodemedia.php	Removes AJAX handler and associated action hook for retranscoding

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[subodhr258]

Validated these items:

• Normal Transcoding with status should work
• reTranscoding should not update job Id and should show Transcoded status
• reTranscoding with settings changed should imply that (Count of thumbnail (lets says initial video had 5 thumbnail re transcode after updating count to 7, after re transcode count should be 7), logo, custom thumbnails)
• Status should have proper progress bar
• Check comment retention after re-transcoding
• Check AI Transcript retention after re-transcoding