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fix: samples_per_frame must multiply fps_den for fractional framerates

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sample_rate / fps_num gave 48000/30000 = 1 for 29.97 fps, producing
silence. Correct formula is sample_rate * fps_den / fps_num, matching
the calculation already used in testpattern.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
JohannesItten
2026-07-03 10:06:43 +03:00
parent 2b11411423
commit 9fd41b0312
1 changed files with 1 additions and 1 deletions
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nodes/ndiout/main.cpp
+1 -1
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@@ -72,7 +72,7 @@ class NDIOutNode : public dmf::NodeBase {
const auto audio_flow_id = audio_flow_info.at("id").get<std::string>();
sample_rate = audio_flow_info.value("sample_rate", 48000);
channels = audio_flow_info.value("channels", 2);
samples_per_frame = sample_rate / fps_num;
samples_per_frame = sample_rate * fps_den / fps_num;
log("audio flow=%s %d Hz %dch %d samples/frame",
audio_flow_id.c_str(), sample_rate, channels, samples_per_frame);