Using Chapters With Your Samsung TV

Using Chapters With Your Samsung TV

Samsung introduced Media Chaptering in some of their 2010 TV models (C series and above). Some Samsung TV models support chaptering whereas some do not.

A way to test if your TV supports chaptering is to check with a local USB video file. Pressing the center button on your remote control (or press the Tools button and select Chapter Search onscreen), you should be able to access chapter points and jump to various parts of your video.

For some Samsung TV models, using chaptering is far better than using the FF/REW features which can be quite time consuming.

Mezzmo supports both auto-chaptering and manual chaptering for Samsung TVs.

Auto-chaptering

By default, Mezzmo server will deliver 15 minute chapters to your Samsung TV so that you can quickly navigate to parts of a video. The chapters will appear onscreen with the Mezzmo icon as the chapter thumbnail.

Advanced: Customizing Auto-chaptering

You can change the default 15 minute interval and the default Mezzmo artwork displayed as chapter thumbnails. You need to edit the device profile file that is assigned to your Samsung TV in the Media Devices dialog. We recommend this for advanced users only.

Using a text editor, edit the device profile .PRF file.
In the <device>…</device> section, add a tag as follows:
```
<samsungchaptering duration="15" numchapters="5"></samsungchaptering>
```
where duration is the number of minutes for each chapter and numchapters is the maximum number of chapters.
Optional: Add base64 encoded JPEG image inside the <samsungchaptering></samsungchaptering> tag to replace the Mezzmo default chapter thumbnail.

To make your own custom thumbnails:

Create a JPEG image that you want as a chapter thumbnail. The native resolution of a chapter thumbnail is known to be 110 x 80 pixels (although this may vary with Samsung models).
Base64 encode the contents of the JPEG file and paste the base64 text into the <InlineMedia> tag.

Tip: There are many free online base64 encoders and decoders that you can use. For example, try http://www.opinionatedgeek.com/DotNet/Tools/Base64Encode/

Manual chaptering

If you would more control over your chapters than what Mezzmo's auto-chaptering delivers to your Samsung TV, then you can create your own custom chapters. Your chapters can be at any intervals and have different artwork for each chapter point.

To do this, you need to create a .MTA file for each video file. The .MTA file needs to be in the same folder as your video file and have the same file name.

Example:

Inception.mkv
Inception.mta

Sample .MTA file

The .MTA file below has 8 chapter points split into 15 minute segments and all chapters have a black thumbnail. You can use this as a template to customize your own .MTA chapter file for your video files.

<?xml version="1.0" encoding="UTF-8"?>
<!--Samsung video metadata file generated by SMVideoEngine (Samsung Metadata Video Engine) v1.0, June 2009. (http://www.samsung.com)-->
<SEC:SECMeta xsi:schemaLocation="urn:samsung:metadata:2009 Video_Metadata_v1.0.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SEC="urn:samsung:metadata:2009">
	<SpecVersion>1.0</SpecVersion>
	<MediaInformation>
		<VideoLocator>
			<MediaUri>file://samsung_content.con</MediaUri>
		</VideoLocator>
	</MediaInformation>
	<ContentInformation>
		<Chaptering>
			<ChapterSegment>
				<KeyFrame>
					<InlineMedia>/9j/4AAQSkZJRgABAgIAyADIAAD//gECMOgeBgEAAAAOAAAAAAAAAAAAAAAAAAAArAEAAB4AAAAFAAAAAAAAAKcBAAABAAAAAwAAAAEAAACpAQAAAgAAAAIAAAACAAAAqgEAAAMAAAABAAAAAwAAAKsBAAAEAAAAAQAAAAQAAAAJAAAABQAAAKMBAAAEAAAAqwEAAAUAAAAAAAAABQAAAAcAAAAGAAAApQEAAAUAAACsAQAABgAAAAAAAAAGAAAABgAAAAcAAACmAQAABgAAAKwBAAAHAAAAAAAAAAcAAAAFAAAACQAAAKcBAAAHAAAArAEAAAkAAAAAAAAACQAAAAQAAAAeAAAAqAEAAAkAAACsAQAAHgAAAP/AABEIAFAAbgMBIgACEQEDEQH/2wCEAAUDAwQDAwUEBAQFBQUGBw0IBwcHBxALDAkNExAUExIQEhIVFx4ZFRYcFhISGiMaHB8gISIhFBklJyQgJx4hISABBQUFBwYHDwgIDyAVEhUVICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIP/EAaIAAAEFAQEBAQEBAAAAAAAAAAABAgMEBQYHCAkKCxAAAgEDAwIEAwUFBAQAAAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWmp6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6AQADAQEBAQEBAQEBAAAAAAAAAQIDBAUGBwgJCgsRAAIBAgQEAwQHBQQEAAECdwABAgMRBAUhMQYSQVEHYXETIjKBCBRCkaGxwQkjM1LwFWJy0QoWJDThJfEXGBkaJicoKSo1Njc4OTpDREVGR0hJSlNUVVZXWFlaY2RlZmdoaWpzdHV2d3h5eoKDhIWGh4iJipKTlJWWl5iZmqKjpKWmp6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uLj5OXm5+jp6vLz9PX29/j5+v/aAAwDAQACEQMRAD8A+MqKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigD//Z</InlineMedia>
				</KeyFrame>
				<MediaPosition>
					<MediaTime timePoint="900"/>
				</MediaPosition>
			</ChapterSegment>
			<ChapterSegment>
				<KeyFrame>
					<InlineMedia>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</InlineMedia>
				</KeyFrame>
				<MediaPosition>
					<MediaTime timePoint="1800"/>
				</MediaPosition>
			</ChapterSegment>
			<ChapterSegment>
				<KeyFrame>
					<InlineMedia>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</InlineMedia>
				</KeyFrame>
				<MediaPosition>
					<MediaTime timePoint="2700"/>
				</MediaPosition>
			</ChapterSegment>
			<ChapterSegment>
				<KeyFrame>
					<InlineMedia>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</InlineMedia>
				</KeyFrame>
				<MediaPosition>
					<MediaTime timePoint="3600"/>
				</MediaPosition>
			</ChapterSegment>
			<ChapterSegment>
				<KeyFrame>
					<InlineMedia>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</InlineMedia>
				</KeyFrame>
				<MediaPosition>
					<MediaTime timePoint="4500"/>
				</MediaPosition>
			</ChapterSegment>
			<ChapterSegment>
				<KeyFrame>
					<InlineMedia>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</InlineMedia>
				</KeyFrame>
				<MediaPosition>
					<MediaTime timePoint="5400"/>
				</MediaPosition>
			</ChapterSegment>
			<ChapterSegment>
				<KeyFrame>
					<InlineMedia>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</InlineMedia>
				</KeyFrame>
				<MediaPosition>
					<MediaTime timePoint="6300"/>
				</MediaPosition>
			</ChapterSegment>
			<ChapterSegment>
				<KeyFrame>
					<InlineMedia>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</InlineMedia>
				</KeyFrame>
				<MediaPosition>
					<MediaTime timePoint="7200"/>
				</MediaPosition>
			</ChapterSegment>
		</Chaptering>
	</ContentInformation>
</SEC:SECMeta>

.MTA file structure

.MTA files are text files with XML formatting.

You will see each chapter data between the tags:

<ChapterSegment>
 ...
</ChapterSegment>

The chapter time stamps are in the <MediaTime> tags. For example:

<MediaTime timePoint="900"/>

The number in quotes is the seconds timeline. In the above example, a chapter point is set a minute 15. You will then see each chapter point increase by the amount you want for your next chapter point (e.g. by 900 seconds).

The thumbnail images are in the <InlineMedia> tags. For example:

<InlineMedia>/9j/4AAQSk.........//Z</InlineMedia>

The data inside the tags are JPEG files with base64 encoding.

To make your own custom chapter thumbnails:

Create a JPEG image that you want as a chapter thumbnail. The native resolution of a chapter thumbnail is known to be 110 x 80 pixels (although this may vary with Samsung models).
Base64 encode the contents of the JPEG file and paste the base64 text into the <InlineMedia>…</InlineMedia> tag.