diff --git a/tests/check/check_signed_video_auth.c b/tests/check/check_signed_video_auth.c
index 2086a20..f5698ab 100644
--- a/tests/check/check_signed_video_auth.c
+++ b/tests/check/check_signed_video_auth.c
@@ -277,7 +277,6 @@ END_TEST
  */
 START_TEST(intact_stream)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   // Create a list of NAL Units given the input string.
   test_stream_t *list = create_signed_nalus("IPPIPPIPPIPPIPPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPPISPPISPPISPPISPPISPPISP");
@@ -296,6 +295,7 @@ END_TEST
 
 START_TEST(intact_multislice_stream)
 {
+  // For AV1, multi-slices are covered in one single OBU (OBU Frame).
   if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = create_signed_nalus("IiPpPpIiPpPpIiPp", settings[_i]);
   test_stream_check_types(list, "IiPpPpIiSPpPpIiSPp");
@@ -314,7 +314,6 @@ END_TEST
 
 START_TEST(intact_stream_with_splitted_nalus)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   // Create a list of NAL Units given the input string.
   test_stream_t *list = create_signed_splitted_nalus("IPPIPPIPPIPPIPPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPPISPPISPPISPPISPPISPPISP");
@@ -337,7 +336,6 @@ END_TEST
  * SEI(s) before the PPS. */
 START_TEST(intact_stream_with_pps_nalu_stream)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = create_signed_nalus("VIPPIPPIP", settings[_i]);
   test_stream_check_types(list, "VIPPISPPISP");
 
@@ -356,6 +354,7 @@ END_TEST
 
 START_TEST(intact_ms_stream_with_pps_nalu_stream)
 {
+  // For AV1, multi-slices are covered in one single OBU (OBU Frame).
   if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = create_signed_nalus("VIiPpPpIiPpPpIiPp", settings[_i]);
   test_stream_check_types(list, "VIiPpPpIiSPpPpIiSPp");
@@ -383,7 +382,6 @@ END_TEST
  */
 START_TEST(intact_with_undefined_nalu_in_stream)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = create_signed_nalus("IPXPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPXPISPPISP");
 
@@ -401,6 +399,7 @@ END_TEST
 
 START_TEST(intact_with_undefined_multislice_nalu_in_stream)
 {
+  // For AV1, multi-slices are covered in one single OBU (OBU Frame).
   if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = create_signed_nalus("IiPpXPpIiPpPpIiPp", settings[_i]);
   test_stream_check_types(list, "IiPpXPpIiSPpPpIiSPp");
@@ -425,7 +424,6 @@ END_TEST
  */
 START_TEST(remove_one_p_nalu)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = create_signed_nalus("IPPIPPPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPPISPPPISPPISP");
 
@@ -471,7 +469,6 @@ END_TEST
  */
 START_TEST(interchange_two_p_nalus)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = create_signed_nalus("IPPIPPPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPPISPPPISPPISP");
 
@@ -510,7 +507,6 @@ END_TEST
  */
 START_TEST(modify_one_p_nalu)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = create_signed_nalus("IPPIPPPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPPISPPPISPPISP");
 
@@ -539,7 +535,6 @@ END_TEST
 
 START_TEST(modify_one_i_nalu)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = create_signed_nalus("IPPIPPPIPPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPPISPPPISPPISPPISP");
 
@@ -576,7 +571,6 @@ END_TEST
 
 START_TEST(modify_one_sei)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = create_signed_nalus("IPPIPPPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPPISPPPISPPISP");
 
@@ -616,7 +610,6 @@ END_TEST
  * 3. Check the authentication result */
 START_TEST(remove_the_g_nalu)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = create_signed_nalus("IPPIPPIPPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPPISPPISPPISPPISP");
 
@@ -647,7 +640,6 @@ END_TEST
 
 START_TEST(remove_the_i_nalu)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = create_signed_nalus("IPPIPPIPPIPPIPPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPPISPPISPPISPPISPPISPPISP");
 
@@ -681,7 +673,6 @@ END_TEST
 
 START_TEST(remove_the_gi_nalus)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = create_signed_nalus("IPPIPPIPPIPPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPPISPPISPPISPPISPPISP");
 
@@ -724,7 +715,6 @@ END_TEST
 
 START_TEST(two_lost_seis)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = create_signed_nalus("IPPIPPIPPIPPIPPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPPISPPISPPISPPISPPISPPISP");
 
@@ -762,7 +752,6 @@ END_TEST
  */
 START_TEST(sei_arrives_late)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = create_signed_nalus("IPPPIPPPIPPPIP", settings[_i]);
   test_stream_check_types(list, "IPPPISPPPISPPPISP");
 
@@ -831,7 +820,6 @@ generate_delayed_sei_list(struct sv_setting setting, bool extra_delay)
  */
 START_TEST(all_seis_arrive_late)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = generate_delayed_sei_list(settings[_i], true);
 
   // IPPPPIPPPIPPSPIPPSPIPPSSPISPISP
@@ -859,7 +847,6 @@ END_TEST
 
 START_TEST(all_seis_arrive_late_first_gop_scrapped)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = generate_delayed_sei_list(settings[_i], true);
 
   // Remove the first GOP: IPPPP IPPPIPPSPIPPSPIPPSSPISPISP
@@ -891,7 +878,6 @@ END_TEST
 
 START_TEST(all_seis_arrive_late_two_gops_scrapped)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = generate_delayed_sei_list(settings[_i], true);
 
   // Remove the first two GOPs: IPPPPIPPP IPPSPIPPSPIPPSSPISPISP
@@ -925,7 +911,6 @@ END_TEST
  */
 START_TEST(lost_g_before_late_sei_arrival)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = create_signed_nalus("IPPPIPPPIPPPIPPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPPPISPPPISPPPISPPISPPISP");
 
@@ -967,7 +952,6 @@ END_TEST
  */
 START_TEST(lost_g_and_gop_with_late_sei_arrival)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   if (TMP_FIX_TO_ALLOW_TWO_INVALID_SEIS_AT_STARTUP) return;
 
   // TODO: This test is not up-to-date, since it is currently not used.
@@ -1024,7 +1008,6 @@ END_TEST
  * Verify that we can validate authenticity correctly if we lose all NAL Units between two SEIs. */
 START_TEST(lost_all_nalus_between_two_seis)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = create_signed_nalus("IPPPIPPPIPPPIPPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPPPISPPPISPPPISPPISPPISP");
 
@@ -1068,21 +1051,26 @@ END_TEST
  */
 START_TEST(add_one_sei_nalu_after_signing)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
+  SignedVideoCodec codec = settings[_i].codec;
   test_stream_t *list = create_signed_nalus("IPPIPPPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPPISPPPISPPISP");
 
   const uint8_t id = 0;
-  test_stream_item_t *sei = test_stream_item_create_from_type('Z', id, settings[_i].codec);
+  test_stream_item_t *sei = test_stream_item_create_from_type('Z', id, codec);
 
   // Append the middle 'P' in second GOP: IPPISP P(Z) PISPPISP
   const int append_nalu_number = 7;
   test_stream_append_item(list, sei, append_nalu_number);
   test_stream_check_types(list, "IPPISPPZPISPPISP");
 
+  // For AV1 OBU metadata are hashed, hence adding one will break the authenticity.
+  SignedVideoAuthenticityResult authenticity =
+      codec != SV_CODEC_AV1 ? SV_AUTH_RESULT_OK : SV_AUTH_RESULT_NOT_OK;
   signed_video_accumulated_validation_t final_validation = {
-      SV_AUTH_RESULT_OK, false, 16, 13, 3, SV_PUBKEY_VALIDATION_NOT_FEASIBLE, true, 0, 0};
-  const struct validation_stats expected = {.valid_gops = 3,
+      authenticity, false, 16, 13, 3, SV_PUBKEY_VALIDATION_NOT_FEASIBLE, true, 0, 0};
+  const struct validation_stats expected = {.valid_gops = codec != SV_CODEC_AV1 ? 3 : 2,
+      .invalid_gops = codec != SV_CODEC_AV1 ? 0 : 1,
+      .missed_nalus = codec != SV_CODEC_AV1 ? 0 : -1,
       .pending_nalus = 3 + 4,
       .unsigned_gops = 1,
       .final_validation = &final_validation};
@@ -1098,7 +1086,6 @@ END_TEST
  */
 START_TEST(remove_two_gop_in_start_of_stream)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   // Create a list of NAL Units given the input string.
   test_stream_t *list = create_signed_nalus("IPIPIPPPIPPPPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPISPISPPPISPPPPISPPISP");
@@ -1153,7 +1140,6 @@ END_TEST
  */
 START_TEST(camera_reset_on_signing_side)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   // Generate 2 GOPs
   test_stream_t *list = create_signed_nalus("IPPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPPISPPISP");
@@ -1204,7 +1190,6 @@ END_TEST
  */
 START_TEST(detect_change_of_public_key)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   // Generate 2 GOPs
   test_stream_t *list = create_signed_nalus("IPPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPPISPPISP");
@@ -1318,7 +1303,6 @@ mimic_au_fast_forward_and_get_list(signed_video_t *sv, struct sv_setting setting
 
 START_TEST(fast_forward_stream_with_reset)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   // Create a session.
   signed_video_t *sv = get_initialized_signed_video(settings[_i], false);
   ck_assert(sv);
@@ -1347,7 +1331,6 @@ END_TEST
 
 START_TEST(fast_forward_stream_without_reset)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   // Create a session.
   signed_video_t *sv = get_initialized_signed_video(settings[_i], false);
   ck_assert(sv);
@@ -1416,7 +1399,6 @@ mimic_au_fast_forward_on_late_seis_and_get_list(signed_video_t *sv, struct sv_se
 
 START_TEST(fast_forward_stream_with_delayed_seis)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   // Create a new session.
   signed_video_t *sv = get_initialized_signed_video(settings[_i], false);
   ck_assert(sv);
@@ -1510,7 +1492,6 @@ mimic_file_export(struct sv_setting setting, bool delayed_seis)
 
 START_TEST(file_export_with_dangling_end)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = mimic_file_export(settings[_i], false);
 
   // VISPPISPPISPPISPP
@@ -1534,7 +1515,6 @@ END_TEST
 
 START_TEST(file_export_with_two_useless_seis)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = generate_delayed_sei_list(settings[_i], true);
   // Remove the first three GOPs.
   // IPPPPIPPPIPPSP IPPSPIPPSSPISPISP
@@ -1567,7 +1547,6 @@ END_TEST
  */
 START_TEST(no_signature)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = test_stream_create("IPPIPPIPPIPPI", settings[_i].codec);
   test_stream_check_types(list, "IPPIPPIPPIPPI");
 
@@ -1595,6 +1574,7 @@ END_TEST
 
 START_TEST(multislice_no_signature)
 {
+  // For AV1, multi-slices are covered in one single OBU (OBU Frame).
   if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = test_stream_create("IiPpPpIiPpPpIiPpPpIiPpPpIi", settings[_i].codec);
   test_stream_check_types(list, "IiPpPpIiPpPpIiPpPpIiPpPpIi");
@@ -1633,7 +1613,6 @@ END_TEST
  */
 START_TEST(fallback_to_gop_level)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   const size_t kFallbackSize = 10;
   signed_video_t *sv = get_initialized_signed_video(settings[_i], false);
   ck_assert(sv);
@@ -1662,7 +1641,6 @@ END_TEST
  * APIs in vendors/axis-communications are used and tests both signing and validation parts. */
 START_TEST(vendor_axis_communications_operation)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   SignedVideoReturnCode sv_rc;
   struct sv_setting setting = settings[_i];
   SignedVideoCodec codec = settings[_i].codec;
@@ -1872,7 +1850,6 @@ validate_public_key_scenario(signed_video_t *sv,
  */
 START_TEST(test_public_key_scenarios)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   struct pk_setting {
     bool pk_in_sei;
     bool use_wrong_pk;
@@ -1953,7 +1930,6 @@ END_TEST
 /* Test description */
 START_TEST(no_public_key_in_sei_and_bad_public_key_on_validation_side)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   SignedVideoReturnCode sv_rc;
   SignedVideoCodec codec = settings[_i].codec;
   test_stream_item_t *i_nalu = test_stream_item_create_from_type('I', 0, codec);
@@ -2023,6 +1999,7 @@ END_TEST
  * the other case is the default and executed for all other tests. */
 START_TEST(no_emulation_prevention_bytes)
 {
+  // Emulation prevention does not apply for AV1.
   if (settings[_i].codec == SV_CODEC_AV1) return;
   struct sv_setting setting = settings[_i];
   SignedVideoCodec codec = settings[_i].codec;
@@ -2154,7 +2131,6 @@ END_TEST
  */
 START_TEST(with_blocked_signing)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = create_signed_nalus("IPPIPPIPPIPPIPPIP", settings[_i]);
   test_stream_check_types(list, "IPPISPPISPPISPPISPPISP");
   test_stream_item_t *sei = test_stream_item_remove(list, 17);
@@ -2198,7 +2174,6 @@ END_TEST
  */
 START_TEST(golden_sei_principle)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   struct sv_setting setting = settings[_i];
   setting.with_golden_sei = true;
 
@@ -2234,7 +2209,6 @@ END_TEST
  */
 START_TEST(legacy_stream)
 {
-  if (settings[_i].codec == SV_CODEC_AV1) return;
   test_stream_t *list = get_legacy_stream(_i, settings[_i].codec);
   if (!list) return;
 
diff --git a/tests/check/legacy_test_data.c b/tests/check/legacy_test_data.c
index 1e4dbf0..f44fc63 100644
--- a/tests/check/legacy_test_data.c
+++ b/tests/check/legacy_test_data.c
@@ -1008,6 +1008,14 @@ static const legacy_data_t legacy_data[NUM_SETTINGS][LEGACY_STREAM_LENGTH] = {
     // {SV_CODEC_H264, SV_AUTHENTICITY_LEVEL_FRAME, signed_video_generate_ecdsa_private_key, 0,
     //     "sha512"},
     // Not valid for legacy streams.
+    {{0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL},
+        {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}},
+    // AV1 tests
+    // TODO: Add test data for AV1.
+    // {SV_CODEC_AV1, SV_AUTHENTICITY_LEVEL_GOP, true, false, false, 0, NULL, 0, 1, false, false},
+    {{0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL},
+        {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}},
+    // {SV_CODEC_AV1, SV_AUTHENTICITY_LEVEL_FRAME, true, false, false, 0, NULL, 0, 1, false, false},
     {{0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL},
         {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}, {0, NULL}}};
 #if 0