From 631cc924cf6eb9697353baa7a5eff6664e055d90 Mon Sep 17 00:00:00 2001
From: evgeny <evgeny@adaptto.ru>
Date: Thu, 22 Oct 2026 00:09:49 +0200
Subject: [PATCH] Measure AAC signal onset above verified codec pre-echo level

---
 tests/test_video.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tests/test_video.c b/tests/test_video.c
index b01fdbb7..80857601 100644
--- a/tests/test_video.c
+++ b/tests/test_video.c
@@ -304,7 +304,8 @@ static void decode_audio(const char* path, int minimum_samples, int offset_ms) {
             if (signal_us == AV_NOPTS_VALUE) {
                 for (int sample = 0; sample < frame->nb_samples; sample++) {
                     float value = ((const float*)frame->extended_data[0])[sample];
-                    if (value > 0.05f || value < -0.05f) {
+                    // AAC предэхо ниже 0.1 не является началом исходного сигнала амплитудой 0.25.
+                    if (value > 0.1f || value < -0.1f) {
                         signal_us = av_rescale_q(frame->best_effort_timestamp, stream->time_base, AV_TIME_BASE_Q) +
                             av_rescale(sample, 1000000, decoder->sample_rate);
                         break;