The Media File Correction Section

The Media File Correction section is a collection of useful tasks:

Extract Original - for reverse transcode
Extract IMF Essence - to withdraw the essence tracks, demux, or attach a Dolby Vision metadata file
Transcode

Media File Correction tasks that are in progress or completed are displayed as lists in each section.

Media File Correction Tasks

Clicking Expand/Collapse All expands or collapses all tasks from the current list.

Clicking Collapse/Expand expands or collapses the specific task from the current list.

Clicking on Workflow Execution Settings displays the workflow of the task in the AWS Management Console.

Extract Original

Extract Original allows you to perform a reverse transcode through the following actions on a source video item:

To deinterlace a media item:

On the Media Item Details page, from the Media File Correction section, click Run in the Extract Original subsection. The Extract Original dialog is displayed.
The Extract Original Dialog
Choose an Action and, additionally, fill the Aspect Ratio and Sample Start Time fields, then click Start.
The progress of the task is described below the Extract Original subsection, as a Reverse Transcode task. The generated file is displayed in the Associated Files section, under the Children subsection.

Extract IMF Essence allows you to perform the following actions on a media item:

To demux a file with mapped audio streams:

On the Media Item Details page, from the Media File Correction section, click Run in the Extract IMF Essence subsection. The Extract IMF Essence Page is displayed.
The Extract IMF Essence Page
On the Image Output tab, type an Output Location.
Additionally, choose which image streams to exclude.
On the Audio Output tab, map the channels to the tracks. Repeat for each channel setup (Stereo, 2.1, 5.1, etc.)
Audio Mapping
Type an Output Location for the audio track and choose a Language.
Additionally, choose which audio streams to exclude and choose a CPL Output Location to also generate a composition playlist for the resulting media item.
Note: Click Add Audio File to Mux to add another input audio track to demux.
Choose a Demux Profile.
Click Start. The progress of the task is described below the Extract IMF subsection, as multiple Track Demuxing tasks, depending on the number of streams in the file. The generated file is displayed in the Associated Files section, under the Children subsection.

To attach a Dolby Vision Metadata file to the current image sequence file:

On the Media Item Details page, from the Tracks section, click the video track. The Edit Video Track dialog is displayed.
The Edit Video Track Dialog
Fill in the fields, then click Save.
From the Media File Correction section, click Run in the Extract IMF Essence subsection. The Extract IMF Essence Page dialog is displayed.
The Extract IMF Essence Page
Choose an Output Location for the video stream.
Choose a Dolby Metadata File, then fill in the First Frame field.
Select a Demux Profile configured for Dolby Vision metadata extraction.
Click Start. The progress of the task is described below the Transcode subsection.
Once completed, the Ingest task list is updated to display Extract Dolby Vision Metadata and the Tracks section is updated with a new track of dv_metadata type.

Transcode allows you to process a source video item by using a specific transcoder profile.

To transcode a video item:

On the Media Item Details page, from the Media File Correction section, click Run in the Transcode subsection. The Transcode dialog is displayed.
The Transcode Dialog
Choose a Transcoder Profile and an Output Location. You can also click to automatically fill in the output location according to the defined audio-video naming convention. See About File Naming Conventions.
Click Start. The progress of the task is described below the Transcode subsection. The generated file is displayed in the Associated Files section, under the Children subsection.