$00 (00)
>
> ```
>
> Content type: $00 is other
> $01 is lyrics
> $02 is text transcription
> $03 is movement/part name (e.g. "Adagio")
> $04 is events (e.g. "Don Quijote enters the stage")
> $05 is chord (e.g. "Bb F Fsus")
> $06 is trivia/'pop up' information
> $07 is URLs to webpages
> $08 is URLs to images
>
> Time stamp format:
>
> ```
> $01 Absolute time, 32 bit sized, using MPEG [MPEG] frames as unit
> $02 Absolute time, 32 bit sized, using milliseconds as unit
>
> ```
>
> Absolute time means that every stamp contains the time from the
> beginning of the file.
>
> The text that follows the frame header differs from that of the
> unsynchronised lyrics/text transcription in one major way. Each
> syllable (or whatever size of text is considered to be convenient by
> the encoder) is a null terminated string followed by a time stamp
> denoting where in the sound file it belongs. Each sync thus has the
> following structure:
>
> ```
> Terminated text to be synced (typically a syllable)
> Sync identifier (terminator to above string) $00 (00)
> Time stamp $xx (xx ...)
>
> ```
>
> The 'time stamp' is set to zero or the whole sync is omitted if
> located directly at the beginning of the sound. All time stamps
> should be sorted in chronological order. The sync can be considered
> as a validator of the subsequent string.
>
> Newline characters are allowed in all "SYLT" frames and MUST be used
> after every entry (name, event etc.) in a frame with the content type
> $03 - $04.
>
> A few considerations regarding whitespace characters: Whitespace
> separating words should mark the beginning of a new word, thus
> occurring in front of the first syllable of a new word. This is also
> valid for new line characters. A syllable followed by a comma should
> not be broken apart with a sync (both the syllable and the comma
> should be before the sync).
>
> An example: The "USLT" passage
>
> ```
> "Strangers in the night" $0A "Exchanging glances"
>
> ```
>
> would be "SYLT" encoded as:
>
> ```
> "Strang" $00 xx xx "ers" $00 xx xx " in" $00 xx xx " the" $00 xx xx
> " night" $00 xx xx 0A "Ex" $00 xx xx "chang" $00 xx xx "ing" $00 xx
> xx "glan" $00 xx xx "ces" $00 xx xx
>
> ```
>
> There may be more than one "SYLT" frame in each tag, but only one
> with the same language and content descriptor.
---
### Author:  [@rajanna](https://community.mp3tag.de/u/rajanna)
#### Post date: [July 16, 2023, 7:34am UTC](https://community.mp3tag.de/t/timed-text-markup-language/61568/3 "2023-07-16T07:34:53Z")
Apple is ttml in Apple Music for syncd lyrics
I have not tried to save a external file with ttml extension and see if iTunes picks up the lyrics
Or is there a m4a embedded tag, I don’t know
---
### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [July 16, 2023, 7:44am UTC](https://community.mp3tag.de/t/timed-text-markup-language/61568/4 "2023-07-16T07:44:58Z")
From what I understand, TTML is used to submit lyrics to Apple Music when adding music to their catalog. I don't see any specification on how this is embedded in, e.g., an M4A file.
If you happen to have such a file that shows synced lyrics, you could try and analyze to see if and where the lyrics are embedded.
---
### Author:  [@rajanna](https://community.mp3tag.de/u/rajanna)
#### Post date: [July 16, 2023, 7:49am UTC](https://community.mp3tag.de/t/timed-text-markup-language/61568/5 "2023-07-16T07:49:56Z")
I will explore and let you know.
Flac uses .lrc dir syncd lyrics.
Similarly Apple could support something. They do not document well.
---
### Author:  [@gigi](https://community.mp3tag.de/u/gigi)
#### Post date: [August 18, 2024, 11:08am UTC](https://community.mp3tag.de/t/timed-text-markup-language/61568/6 "2024-08-18T11:08:36Z")
have you found any m4a equivalent tag for ttml or really any way to embed synced lyrics into m4a/mp4 files?
---
### Author:  [@rajanna](https://community.mp3tag.de/u/rajanna)
#### Post date: [April 28, 2025, 6:00am UTC](https://community.mp3tag.de/t/timed-text-markup-language/61568/7 "2025-04-28T06:00:59Z")
no luck yet
I have not been able to make it work
Apple is using xml format for tags