From 5d21502ecffb794333a53bb1fec4155ceb382ae4 Mon Sep 17 00:00:00 2001
From: Romain Beauxis <romain.beauxis@gmail.com>
Date: Thu, 15 Oct 2026 15:03:01 +0200
Subject: [PATCH] tests/fate/mov: add a test for seeking into AAC with
 container priming

Decode 0.15 s of the mono AAC-LC aac-2048-priming.mov starting at 2.3 s,
with the seek done on the input. The seek lands in the middle of a frame,
and the reference output starts at the requested time with the partial
frame. The decoder instead discards the first 1994 samples, as the
container's 2048 samples of priming are applied to the first frame
decoded after the seek, so the output starts late.

The reference records the current output.
---
 tests/fate/mov.mak                       |  4 ++++
 tests/ref/fate/mov-aac-2048-priming-seek | 10 ++++++++++
 2 files changed, 14 insertions(+)
 create mode 100644 tests/ref/fate/mov-aac-2048-priming-seek

diff --git a/tests/fate/mov.mak b/tests/fate/mov.mak
index 70d147f74f..ee3cd5e940 100644
--- a/tests/fate/mov.mak
+++ b/tests/fate/mov.mak
@@ -151,6 +151,10 @@ fate-mov-stream-shorter-than-movie: CMD = framemd5 -flags +bitexact -i $(TARGET_
 
 fate-mov-aac-2048-priming: CMD = run ffprobe$(PROGSSUF)$(EXESUF) -show_packets -print_format compact $(TARGET_SAMPLES)/mov/aac-2048-priming.mov
 
+# Seeking into the stream must not drop samples to the container's priming.
+FATE_MOV-$(call FRAMECRC, MOV, AAC, PCM_S16LE_ENCODER ARESAMPLE_FILTER VOLUME_FILTER) += fate-mov-aac-2048-priming-seek
+fate-mov-aac-2048-priming-seek: CMD = framecrc -ss 2.3 -t 0.15 -i $(TARGET_SAMPLES)/mov/aac-2048-priming.mov -af volume=0,aresample -c:a pcm_s16le
+
 fate-mov-zombie: CMD = run ffprobe$(PROGSSUF)$(EXESUF) -show_streams -show_packets -show_frames -bitexact -print_format compact $(TARGET_SAMPLES)/mov/white_zombie_scrunch-part.mov
 
 fate-mov-init-nonkeyframe: CMD = run ffprobe$(PROGSSUF)$(EXESUF) -show_packets -print_format compact -select_streams v $(TARGET_SAMPLES)/mov/mp4-init-nonkeyframe.mp4
diff --git a/tests/ref/fate/mov-aac-2048-priming-seek b/tests/ref/fate/mov-aac-2048-priming-seek
new file mode 100644
index 0000000000..fb0223e0d2
--- /dev/null
+++ b/tests/ref/fate/mov-aac-2048-priming-seek
@@ -0,0 +1,10 @@
+#tb 0: 1/44100
+#media_type 0: audio
+#codec_id 0: pcm_s16le
+#sample_rate 0: 44100
+#channel_layout_name 0: mono
+0,       1994,       1994,     1024,     2048, 0x00000000
+0,       3018,       3018,     1024,     2048, 0x00000000
+0,       4042,       4042,     1024,     2048, 0x00000000
+0,       5066,       5066,     1024,     2048, 0x00000000
+0,       6090,       6090,      525,     1050, 0x00000000