add 32-bit tests; return errors in case of string-to-int overflows

[aler9]

No description provided.

[codecov-commenter]

Codecov Report

Merging #39 (e6296fd) into main (77f9d31) will not change coverage.
The diff coverage is 88.88%.

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@@           Coverage Diff           @@
##             main      #39   +/-   ##
=======================================
  Coverage   71.38%   71.38%           
=======================================
  Files          49       49           
  Lines        4411     4411           
=======================================
  Hits         3149     3149           
  Misses        974      974           
  Partials      288      288           

Impacted Files	Coverage Δ
pkg/playlist/media.go	73.33% <80.00%> (ø)
pkg/playlist/media_skip.go	100.00% <100.00%> (ø)
pkg/playlist/multivariant.go	84.44% <100.00%> (ø)
pkg/playlist/multivariant_variant.go	93.33% <100.00%> (ø)

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