diff --git a/data/notcursesIII.mkv b/data/notcursesIII.mkv
deleted file mode 100644
index 0be419917..000000000
Binary files a/data/notcursesIII.mkv and /dev/null differ
diff --git a/data/notcursesIII.mov b/data/notcursesIII.mov
new file mode 100644
index 000000000..122ca3803
Binary files /dev/null and b/data/notcursesIII.mov differ
diff --git a/src/demo/xray.c b/src/demo/xray.c
index 5061a379d..000c599d4 100644
--- a/src/demo/xray.c
+++ b/src/demo/xray.c
@@ -168,7 +168,7 @@ int xray_demo(struct notcurses* nc){
   unsigned dimx, dimy;
   notcurses_term_dim_yx(nc, &dimy, &dimx);
   ncplane_erase(notcurses_stdplane(nc));
-  char* path = find_data("notcursesIII.mkv");
+  char* path = find_data("notcursesIII.mov");
   struct ncvisual* ncv1 = ncvisual_from_file(path);
   struct ncvisual* ncv2 = ncvisual_from_file(path);
   free(path);
diff --git a/src/tests/media.cpp b/src/tests/media.cpp
index 6e1f4aa8b..385e40be4 100644
--- a/src/tests/media.cpp
+++ b/src/tests/media.cpp
@@ -139,7 +139,7 @@ TEST_CASE("Media") {
     if(notcurses_canopen_videos(nc_)){
       unsigned dimy, dimx;
       ncplane_dim_yx(ncp_, &dimy, &dimx);
-      auto ncv = ncvisual_from_file(find_data("notcursesIII.mkv").get());
+      auto ncv = ncvisual_from_file(find_data("notcursesIII.mov").get());
       REQUIRE(ncv);
       // FIXME can't we use use ncvisual_stream() here?
       for(;;){ // run at the highest speed we can
@@ -163,7 +163,7 @@ TEST_CASE("Media") {
     if(notcurses_canopen_videos(nc_)){
       unsigned dimy, dimx;
       ncplane_dim_yx(ncp_, &dimy, &dimx);
-      auto ncv = ncvisual_from_file(find_data("notcursesIII.mkv").get());
+      auto ncv = ncvisual_from_file(find_data("notcursesIII.mov").get());
       REQUIRE(ncv);
       for(;;){ // run at the highest speed we can
         int ret = ncvisual_decode(ncv);
@@ -187,7 +187,7 @@ TEST_CASE("Media") {
     if(notcurses_canopen_videos(nc_)){
       unsigned dimy, dimx;
       ncplane_dim_yx(ncp_, &dimy, &dimx);
-      auto ncv = ncvisual_from_file(find_data("notcursesIII.mkv").get());
+      auto ncv = ncvisual_from_file(find_data("notcursesIII.mov").get());
       REQUIRE(ncv);
       for(;;){ // run at the highest speed we can
         int ret = ncvisual_decode(ncv);
@@ -210,7 +210,7 @@ TEST_CASE("Media") {
     if(notcurses_canopen_videos(nc_)){
       unsigned dimy, dimx;
       ncplane_dim_yx(ncp_, &dimy, &dimx);
-      auto ncv = ncvisual_from_file(find_data("notcursesIII.mkv").get());
+      auto ncv = ncvisual_from_file(find_data("notcursesIII.mov").get());
       REQUIRE(ncv);
       for(;;){ // run at the highest speed we can
         int ret = ncvisual_decode(ncv);
@@ -233,7 +233,7 @@ TEST_CASE("Media") {
     if(notcurses_canopen_videos(nc_)){
       unsigned dimy, dimx;
       ncplane_dim_yx(ncp_, &dimy, &dimx);
-      auto ncv = ncvisual_from_file(find_data("notcursesIII.mkv").get());
+      auto ncv = ncvisual_from_file(find_data("notcursesIII.mov").get());
       REQUIRE(ncv);
       for(;;){ // run at the highest speed we can
         int ret = ncvisual_decode(ncv);
@@ -258,7 +258,7 @@ TEST_CASE("Media") {
       if(notcurses_canopen_videos(nc_)){
         unsigned dimy, dimx;
         ncplane_dim_yx(ncp_, &dimy, &dimx);
-        auto ncv = ncvisual_from_file(find_data("notcursesIII.mkv").get());
+        auto ncv = ncvisual_from_file(find_data("notcursesIII.mov").get());
         REQUIRE(ncv);
         ncplane_options nopts{};
         // shrink it down so this test runs more quickly
@@ -294,7 +294,7 @@ TEST_CASE("Media") {
       if(notcurses_canopen_videos(nc_)){
         unsigned dimy, dimx;
         ncplane_dim_yx(ncp_, &dimy, &dimx);
-        auto ncv = ncvisual_from_file(find_data("notcursesIII.mkv").get());
+        auto ncv = ncvisual_from_file(find_data("notcursesIII.mov").get());
         REQUIRE(ncv);
         for(;;){ // run at the highest speed we can
           int ret = ncvisual_decode(ncv);
@@ -326,7 +326,7 @@ TEST_CASE("Media") {
     if(notcurses_canopen_videos(nc_)){
       unsigned dimy, dimx;
       ncplane_dim_yx(ncp_, &dimy, &dimx);
-      auto ncv = ncvisual_from_file(find_data("notcursesIII.mkv").get());
+      auto ncv = ncvisual_from_file(find_data("notcursesIII.mov").get());
       REQUIRE(ncv);
       int ret;
       while((ret = ncvisual_decode(ncv)) == 0){
@@ -353,7 +353,7 @@ TEST_CASE("Media") {
     if(notcurses_canopen_videos(nc_)){
       unsigned dimy, dimx;
       ncplane_dim_yx(ncp_, &dimy, &dimx);
-      auto ncv = ncvisual_from_file(find_data("notcursesIII.mkv").get());
+      auto ncv = ncvisual_from_file(find_data("fm6.wmv").get());
       REQUIRE(ncv);
       CHECK(0 == ncvisual_decode(ncv));
       /*CHECK(dimy * 2 == frame->height);