From fa835d686f7edbaf9617f496a9fee3132577df42 Mon Sep 17 00:00:00 2001
From: Mathieu Duponchelle <mathieu@centricular.com>
Date: Fri, 6 Aug 2021 22:59:23 +0200
Subject: [PATCH] isomp4/qtmux: make sure to switch to next chunk on new caps

For example, with single video sink pad, and new codec_data is
received, current_chunk_offset must be reset to -1 for the
aggregate loop to open a new chunk.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/1047>
---
 gst/isomp4/gstqtmux.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/gst/isomp4/gstqtmux.c b/gst/isomp4/gstqtmux.c
index dc30d711a1..d93d066067 100644
--- a/gst/isomp4/gstqtmux.c
+++ b/gst/isomp4/gstqtmux.c
@@ -6872,6 +6872,14 @@ gst_qt_mux_sink_event (GstAggregator * agg, GstAggregatorPad * agg_pad,
             caps);
       } else {
         ret = qtmux_pad->set_caps (qtmux_pad, caps);
+
+        GST_OBJECT_LOCK (qtmux);
+        if (qtmux->current_pad == qtmux_pad) {
+          qtmux->current_chunk_offset = -1;
+          qtmux->current_chunk_size = 0;
+          qtmux->current_chunk_duration = 0;
+        }
+        GST_OBJECT_UNLOCK (qtmux);
       }
 
       if (ret)