add DTS extractors that work with native timestamp

[aler9]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 70.60606% with 97 lines in your changes missing coverage. Please review.

Project coverage is 81.07%. Comparing base (393a408) to head (2a5f006).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/codecs/h265/dts_extractor2.go	65.68%	42 Missing and 16 partials ⚠️
pkg/codecs/h264/dts_extractor2.go	75.77%	27 Missing and 12 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #149      +/-   ##
==========================================
- Coverage   81.50%   81.07%   -0.43%     
==========================================
  Files          77       79       +2     
  Lines        7055     7246     +191     
==========================================
+ Hits         5750     5875     +125     
- Misses        948      994      +46     
- Partials      357      377      +20     

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