diff --git a/subprojects/gst-plugins-good/docs/gst_plugins_cache.json b/subprojects/gst-plugins-good/docs/gst_plugins_cache.json
index d7543f08fe..6b719d62d1 100644
--- a/subprojects/gst-plugins-good/docs/gst_plugins_cache.json
+++ b/subprojects/gst-plugins-good/docs/gst_plugins_cache.json
@@ -8155,7 +8155,7 @@
                         "type": "GstQTMuxPad"
                     },
                     "video_%%u": {
-                        "caps": "video/mpeg:\n    mpegversion: 4\n   systemstream: false\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-divx:\n    divxversion: 5\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-h264:\n  stream-format: { (string)avc, (string)avc3 }\n      alignment: au\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-h265:\n  stream-format: { (string)hvc1, (string)hev1 }\n      alignment: au\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-mp4-part:\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-av1:\n      alignment: tu\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-vp9:\n        profile: { (string)0, (string)1, (string)2, (string)3 }\n  chroma-format: { (string)4:2:0, (string)4:2:2, (string)4:4:4 }\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\n",
+                        "caps": "video/mpeg:\n    mpegversion: 4\n   systemstream: false\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-divx:\n    divxversion: 5\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-h264:\n  stream-format: { (string)avc, (string)avc3 }\n      alignment: au\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-h265:\n  stream-format: { (string)hvc1, (string)hev1 }\n      alignment: au\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-mp4-part:\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-av1:\n  stream-format: obu-stream\n      alignment: tu\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-vp9:\n        profile: { (string)0, (string)1, (string)2, (string)3 }\n  chroma-format: { (string)4:2:0, (string)4:2:2, (string)4:4:4 }\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\n",
                         "direction": "sink",
                         "presence": "request",
                         "type": "GstQTMuxPad"
@@ -8328,7 +8328,7 @@
                         "type": "GstQTMuxPad"
                     },
                     "video_%%u": {
-                        "caps": "video/x-raw:\n         format: { RGB, UYVY, v210 }\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/mpeg:\n    mpegversion: 4\n   systemstream: false\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-divx:\n    divxversion: 5\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-prores:\n        variant: { (string)standard, (string)lt, (string)hq, (string)proxy, (string)4444, (string)4444xq }\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-cineform:\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-h263:\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-h264:\n  stream-format: { (string)avc, (string)avc3 }\n      alignment: au\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-h265:\n  stream-format: { (string)hvc1, (string)hev1 }\n      alignment: au\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-svq:\n     svqversion: 3\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-dv:\n   systemstream: false\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nimage/jpeg:\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nimage/png:\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-vp8:\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-vp9:\n        profile: { (string)0, (string)1, (string)2, (string)3 }\n  chroma-format: { (string)4:2:0, (string)4:2:2, (string)4:4:4 }\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-dirac:\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-qt-part:\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-av1:\n      alignment: tu\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\n",
+                        "caps": "video/x-raw:\n         format: { RGB, UYVY, v210 }\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/mpeg:\n    mpegversion: 4\n   systemstream: false\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-divx:\n    divxversion: 5\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-prores:\n        variant: { (string)standard, (string)lt, (string)hq, (string)proxy, (string)4444, (string)4444xq }\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-cineform:\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-h263:\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-h264:\n  stream-format: { (string)avc, (string)avc3 }\n      alignment: au\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-h265:\n  stream-format: { (string)hvc1, (string)hev1 }\n      alignment: au\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-svq:\n     svqversion: 3\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-dv:\n   systemstream: false\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nimage/jpeg:\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nimage/png:\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-vp8:\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-vp9:\n        profile: { (string)0, (string)1, (string)2, (string)3 }\n  chroma-format: { (string)4:2:0, (string)4:2:2, (string)4:4:4 }\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-dirac:\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-qt-part:\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\nvideo/x-av1:\n  stream-format: obu-stream\n      alignment: tu\n          width: [ 16, 2147483647 ]\n         height: [ 16, 2147483647 ]\n",
                         "direction": "sink",
                         "presence": "request",
                         "type": "GstQTMuxPad"
diff --git a/subprojects/gst-plugins-good/gst/isomp4/gstqtmuxmap.c b/subprojects/gst-plugins-good/gst/isomp4/gstqtmuxmap.c
index 581089af03..88bc6da2ba 100644
--- a/subprojects/gst-plugins-good/gst/isomp4/gstqtmuxmap.c
+++ b/subprojects/gst-plugins-good/gst/isomp4/gstqtmuxmap.c
@@ -210,17 +210,13 @@ GstQTMuxFormatProp gst_qt_mux_format_list[] = {
             VP9_CAPS "; "
             "video/x-dirac, "
             COMMON_VIDEO_CAPS "; " "video/x-qt-part, " COMMON_VIDEO_CAPS "; "
-            "video/x-av1, " "alignment = (string) \"tu\", "
-            COMMON_VIDEO_CAPS ";"),
-        GST_STATIC_CAPS (PCM_CAPS_FULL "; "
-            PCM_CAPS_UNPOSITIONED " ; "
-            MP123_CAPS " ; "
-            AAC_CAPS " ; "
-            AC3_CAPS " ; "
-            ADPCM_CAPS " ; "
-            "audio/x-alaw, " COMMON_AUDIO_CAPS (2, MAX) "; "
-            "audio/x-mulaw, " COMMON_AUDIO_CAPS (2, MAX) "; "
-            AMR_CAPS " ; " ALAC_CAPS " ; " OPUS_CAPS),
+            "video/x-av1, " "stream-format = (string) \"obu-stream\", "
+            "alignment = (string) \"tu\", " COMMON_VIDEO_CAPS ";"),
+        GST_STATIC_CAPS (PCM_CAPS_FULL "; " PCM_CAPS_UNPOSITIONED " ; "
+            MP123_CAPS " ; " AAC_CAPS " ; " AC3_CAPS " ; " ADPCM_CAPS " ; "
+            "audio/x-alaw, " COMMON_AUDIO_CAPS (2,
+                MAX) "; " "audio/x-mulaw, " COMMON_AUDIO_CAPS (2,
+                MAX) "; " AMR_CAPS " ; " ALAC_CAPS " ; " OPUS_CAPS),
         GST_STATIC_CAPS (TEXT_UTF8),
       GST_STATIC_CAPS (CEA608_CAPS "; " CEA708_CAPS)}
   ,
@@ -235,10 +231,11 @@ GstQTMuxFormatProp gst_qt_mux_format_list[] = {
         GST_STATIC_CAPS ("video/quicktime, variant = (string) iso"),
         GST_STATIC_CAPS (MPEG4V_CAPS "; " H264_CAPS ";" H265_CAPS ";"
             "video/x-mp4-part," COMMON_VIDEO_CAPS "; "
-            "video/x-av1, " "alignment = (string) \"tu\", "
-            COMMON_VIDEO_CAPS "; " VP9_CAPS "; "),
-        GST_STATIC_CAPS (MP123_CAPS "; "
-            AAC_CAPS " ; " AC3_CAPS " ; " ALAC_CAPS " ; " OPUS_CAPS),
+            "video/x-av1, " "stream-format = (string) \"obu-stream\", "
+            "alignment = (string) \"tu\", " COMMON_VIDEO_CAPS "; " VP9_CAPS
+            "; "),
+        GST_STATIC_CAPS (MP123_CAPS "; " AAC_CAPS " ; " AC3_CAPS " ; " ALAC_CAPS
+            " ; " OPUS_CAPS),
         GST_STATIC_CAPS (TEXT_UTF8),
       GST_STATIC_CAPS_NONE}
   ,
diff --git a/subprojects/gst-plugins-good/gst/isomp4/qtdemux.c b/subprojects/gst-plugins-good/gst/isomp4/qtdemux.c
index 2eb94a55ca..23eafe0de6 100644
--- a/subprojects/gst-plugins-good/gst/isomp4/qtdemux.c
+++ b/subprojects/gst-plugins-good/gst/isomp4/qtdemux.c
@@ -15018,6 +15018,7 @@ qtdemux_video_caps (GstQTDemux * qtdemux, QtDemuxStream * stream,
     case FOURCC_av01:
       _codec ("AV1");
       caps = gst_caps_new_simple ("video/x-av1",
+          "stream-format", G_TYPE_STRING, "obu-stream",
           "alignment", G_TYPE_STRING, "tu", NULL);
       break;
     case GST_MAKE_FOURCC ('k', 'p', 'c', 'd'):