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There should be a universal object structure for lyrics and subtitles. More ideas will be written down in this issue, and there will be a lot of pull requests to achieve this goal.

• LRC (legacy) part of CXL specification should resemble TRC specification to reduce complexity
• CXL (Compact eXtended Lyrics) should be renamed to MXL (Modulized eXtended Lyrics)

There are several specifications that resembles or based on the LRC specification. Currently there are two to be known: xLRC and TRC, which both had word timing added. All meta tags of LRC were preserved.

Taking a deeper dive into the TRC format, we will find something like this (example from a certain Chinese site):

[00:16.54]<250>当<300>你<1852>要<249>离<452>开<201>的<451>时<3801>候

And let's see an example of xLRC files (example from Wikipedia):

[00:06.47] <00:07.67> And <00:07.94> all <00:08.36> the <00:08.63> joy <00:10.28> within <00:10.53> you <00:13.09> dies

We can see that the timing tags of TRC and xLRC are both placed before each seperate "unit". Timing tags in TRC describes the duration of each word in milliseconds, while in xLRC describes when will each word end in the normal human-readable format. This means the parser of both xLRC and TRC can be merged inside the LRC parser with some dynamic adjustments when the parser reads each line.

Because there are a lot of lyrics that do not use either UTF-8 or UTF-16 as their encoding, there should also be some compatibility with detecting and decoding existing encoding schemes.