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[TTML] Fix clock-time fractional seconds parsing #2125

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Merged
CastagnaIT merged 1 commit into from
Oct 15, 2026
Merged

[TTML] Fix clock-time fractional seconds parsing #2125

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10 changes: 7 additions & 3 deletions src/codechandler/ttml/TTML.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -444,7 +444,7 @@ uint64_t TTML2SRT::GetTime(std::string timeExpr)
unsigned long long h{0};
unsigned long long m{0};
unsigned long long s{0};
unsigned long long ms{0};
unsigned long long fs{0};
unsigned long long f{0};
unsigned long long sf{0};

Expand Down Expand Up @@ -512,9 +512,13 @@ uint64_t TTML2SRT::GetTime(std::string timeExpr)
ts += (m_timescale * sf * m_frameRateDen / m_subFrameRate) / m_frameRateNum;
}
}
else if (sscanf(timeExpr.c_str(), "%llu:%llu:%llu.%llu", &h, &m, &s, &ms) == 4)
else if (sscanf(timeExpr.c_str(), "%llu:%llu:%llu.%9llu", &h, &m, &s, &fs) == 4)
{
ts = (h * 3600 + m * 60 + s) * m_timescale + ms;
// pad to 9 digits: ".5" -> 500000000, ".05" -> 50000000
for (size_t n = timeExpr.size() - timeExpr.find('.') - 1; n < 9; ++n)
fs *= 10;

ts = (h * 3600 + m * 60 + s) * m_timescale + fs * m_timescale / 1000000000ULL;
}
else if (sscanf(timeExpr.c_str(), "%llu:%llu:%llu:%llu.%llu", &h, &m, &s, &f, &sf) == 5)
{
Expand Down
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