diff --git a/player/command.c b/player/command.c
index 809e3ed4d6..4f2eb4741d 100644
--- a/player/command.c
+++ b/player/command.c
@@ -4188,7 +4188,7 @@ static void recreate_overlays(struct MPContext *mpctx)
     struct command_ctx *cmd = mpctx->command_ctx;
     int overlay_next = !cmd->overlay_osd_current;
     struct sub_bitmaps *new = &cmd->overlay_osd[overlay_next];
-    new->format = SUBBITMAP_RGBA;
+    new->format = SUBBITMAP_BGRA;
     new->change_id = 1;
 
     bool valid = false;
diff --git a/sub/ass_mp.c b/sub/ass_mp.c
index 45328fb920..8d0ab96e7d 100644
--- a/sub/ass_mp.c
+++ b/sub/ass_mp.c
@@ -285,7 +285,7 @@ static bool pack_rgba(struct mp_ass_packer *p, struct sub_bitmaps *res)
 
     struct sub_bitmaps imgs = {
         .change_id = res->change_id,
-        .format = SUBBITMAP_RGBA,
+        .format = SUBBITMAP_BGRA,
         .parts = p->rgba_imgs,
         .num_parts = num_bb,
     };
@@ -341,7 +341,7 @@ void mp_ass_packer_pack(struct mp_ass_packer *p, ASS_Image **image_lists,
                         int num_image_lists, bool image_lists_changed,
                         int preferred_osd_format, struct sub_bitmaps *out)
 {
-    int format = preferred_osd_format == SUBBITMAP_RGBA ? SUBBITMAP_RGBA
+    int format = preferred_osd_format == SUBBITMAP_BGRA ? SUBBITMAP_BGRA
                                                         : SUBBITMAP_LIBASS;
 
     if (p->cached_subs_valid && !image_lists_changed &&
@@ -379,7 +379,7 @@ void mp_ass_packer_pack(struct mp_ass_packer *p, ASS_Image **image_lists,
     }
 
     bool r = false;
-    if (format == SUBBITMAP_RGBA) {
+    if (format == SUBBITMAP_BGRA) {
         r = pack_rgba(p, &res);
     } else {
         r = pack_libass(p, &res);
diff --git a/sub/draw_bmp.c b/sub/draw_bmp.c
index f7f8982051..37e57a1991 100644
--- a/sub/draw_bmp.c
+++ b/sub/draw_bmp.c
@@ -32,7 +32,7 @@
 
 const bool mp_draw_sub_formats[SUBBITMAP_COUNT] = {
     [SUBBITMAP_LIBASS] = true,
-    [SUBBITMAP_RGBA] = true,
+    [SUBBITMAP_BGRA] = true,
 };
 
 struct part {
@@ -84,7 +84,7 @@ struct mp_draw_sub_cache
     struct mp_sws_context *alpha_to_calpha; // scaler for overlay -> calpha
     bool scale_in_tiles;
 
-    struct mp_sws_context *sub_scale; // scaler for SUBBITMAP_RGBA
+    struct mp_sws_context *sub_scale; // scaler for SUBBITMAP_BGRA
 
     struct mp_repack *overlay_to_f32; // convert video_overlay to float
     struct mp_image *overlay_tmp;   // slice in float32
@@ -363,7 +363,7 @@ static void draw_rgba(uint8_t *dst, ptrdiff_t dst_stride,
 static bool render_rgba(struct mp_draw_sub_cache *p, struct part *part,
                         struct sub_bitmaps *sb)
 {
-    assert(sb->format == SUBBITMAP_RGBA);
+    assert(sb->format == SUBBITMAP_BGRA);
 
     if (part->change_id != sb->change_id) {
         for (int n = 0; n < part->num_imgs; n++)
@@ -462,7 +462,7 @@ static bool render_sb(struct mp_draw_sub_cache *p, struct sub_bitmaps *sb)
     case SUBBITMAP_LIBASS:
         render_ass(p, sb);
         return true;
-    case SUBBITMAP_RGBA:
+    case SUBBITMAP_BGRA:
         return render_rgba(p, part, sb);
     }
 
diff --git a/sub/osd.c b/sub/osd.c
index b06fd242a3..e422716ada 100644
--- a/sub/osd.c
+++ b/sub/osd.c
@@ -284,7 +284,7 @@ static struct sub_bitmaps *render_object(struct osd_state *osd,
 {
     int format = SUBBITMAP_LIBASS;
     if (!sub_formats[format] || osd->opts->force_rgba_osd)
-        format = SUBBITMAP_RGBA;
+        format = SUBBITMAP_BGRA;
 
     struct sub_bitmaps *res = NULL;
 
diff --git a/sub/osd.h b/sub/osd.h
index 9b680b8bf8..168f86320e 100644
--- a/sub/osd.h
+++ b/sub/osd.h
@@ -24,11 +24,11 @@
 
 #include "options/m_option.h"
 
-// NOTE: VOs must support at least SUBBITMAP_RGBA.
+// NOTE: VOs must support at least SUBBITMAP_BGRA.
 enum sub_bitmap_format {
     SUBBITMAP_EMPTY = 0,// no bitmaps; always has num_parts==0
     SUBBITMAP_LIBASS,   // A8, with a per-surface blend color (libass.color)
-    SUBBITMAP_RGBA,     // IMGFMT_BGRA (MSB=A, LSB=B), scaled, premultiplied alpha
+    SUBBITMAP_BGRA,     // IMGFMT_BGRA (MSB=A, LSB=B), scaled, premultiplied alpha
 
     SUBBITMAP_COUNT
 };
@@ -64,7 +64,7 @@ struct sub_bitmaps {
     // Packed representation of the bitmap data. If non-NULL, then the
     // parts[].bitmap pointer points into the image data here (and stride will
     // correspond to packed->stride[0]).
-    //  SUBBITMAP_RGBA: IMGFMT_BGRA (exact match)
+    //  SUBBITMAP_BGRA: IMGFMT_BGRA (exact match)
     //  SUBBITMAP_LIBASS: IMGFMT_Y8 (not the same, but compatible layout)
     // Other formats have this set to NULL.
     struct mp_image *packed;
@@ -82,7 +82,7 @@ struct sub_bitmap_list {
     int64_t change_id;
 
     // Bounding box for rendering. It's notable that SUBBITMAP_LIBASS images are
-    // always within these bounds, while SUBBITMAP_RGBA is not necessarily.
+    // always within these bounds, while SUBBITMAP_BGRA is not necessarily.
     int w, h;
 
     // Sorted by sub_bitmaps.render_index. Unused parts are not in the array,
diff --git a/sub/sd_lavc.c b/sub/sd_lavc.c
index e8da942a76..ce0ef11a0a 100644
--- a/sub/sd_lavc.c
+++ b/sub/sd_lavc.c
@@ -433,7 +433,7 @@ static struct sub_bitmaps *get_bitmaps(struct sd *sd, struct mp_osd_res d,
     res->packed = current->data;
     res->packed_w = current->bound_w;
     res->packed_h = current->bound_h;
-    res->format = SUBBITMAP_RGBA;
+    res->format = SUBBITMAP_BGRA;
 
     double video_par = 0;
     if (priv->avctx->codec_id == AV_CODEC_ID_DVD_SUBTITLE &&
diff --git a/video/out/gpu/osd.c b/video/out/gpu/osd.c
index 63a04481d2..75538dbdf4 100644
--- a/video/out/gpu/osd.c
+++ b/video/out/gpu/osd.c
@@ -31,7 +31,7 @@
 static const int blend_factors[SUBBITMAP_COUNT][4] = {
     [SUBBITMAP_LIBASS] = {RA_BLEND_SRC_ALPHA, RA_BLEND_ONE_MINUS_SRC_ALPHA,
                           RA_BLEND_ONE,       RA_BLEND_ONE_MINUS_SRC_ALPHA},
-    [SUBBITMAP_RGBA] =   {RA_BLEND_ONE,       RA_BLEND_ONE_MINUS_SRC_ALPHA,
+    [SUBBITMAP_BGRA] =   {RA_BLEND_ONE,       RA_BLEND_ONE_MINUS_SRC_ALPHA,
                           RA_BLEND_ONE,       RA_BLEND_ONE_MINUS_SRC_ALPHA},
 };
 
@@ -86,7 +86,7 @@ struct mpgl_osd *mpgl_osd_init(struct ra *ra, struct mp_log *log,
     };
 
     ctx->fmt_table[SUBBITMAP_LIBASS] = ra_find_unorm_format(ra, 1, 1);
-    ctx->fmt_table[SUBBITMAP_RGBA]   = ra_find_unorm_format(ra, 1, 4);
+    ctx->fmt_table[SUBBITMAP_BGRA]   = ra_find_unorm_format(ra, 1, 4);
 
     for (int n = 0; n < MAX_OSD_PARTS; n++)
         ctx->parts[n] = talloc_zero(ctx, struct mpgl_osd_part);
@@ -215,7 +215,7 @@ bool mpgl_osd_draw_prepare(struct mpgl_osd *ctx, int index,
 
     gl_sc_uniform_texture(sc, "osdtex", part->texture);
     switch (fmt) {
-    case SUBBITMAP_RGBA: {
+    case SUBBITMAP_BGRA: {
         GLSL(color = texture(osdtex, texcoord).bgra;)
         break;
     }
diff --git a/video/out/vo_gpu_next.c b/video/out/vo_gpu_next.c
index 98c673eb57..40b142bc50 100644
--- a/video/out/vo_gpu_next.c
+++ b/video/out/vo_gpu_next.c
@@ -215,7 +215,7 @@ static void write_overlays(struct vo *vo, struct mp_osd_res res, double pts,
     struct priv *p = vo->priv;
     static const bool subfmt_all[SUBBITMAP_COUNT] = {
         [SUBBITMAP_LIBASS] = true,
-        [SUBBITMAP_RGBA]   = true,
+        [SUBBITMAP_BGRA]   = true,
     };
 
     struct sub_bitmap_list *subs = osd_render(vo->osd, res, pts, flags, subfmt_all);
@@ -283,7 +283,7 @@ static void write_overlays(struct vo *vo, struct mp_osd_res res, double pts,
         };
 
         switch (item->format) {
-        case SUBBITMAP_RGBA:
+        case SUBBITMAP_BGRA:
             ol->mode = PL_OVERLAY_NORMAL;
             ol->repr.alpha = PL_ALPHA_PREMULTIPLIED;
             break;
@@ -1153,7 +1153,7 @@ static int preinit(struct vo *vo)
     p->rr = pl_renderer_create(p->pllog, p->gpu);
     p->queue = pl_queue_create(p->gpu);
     p->osd_fmt[SUBBITMAP_LIBASS] = pl_find_named_fmt(p->gpu, "r8");
-    p->osd_fmt[SUBBITMAP_RGBA] = pl_find_named_fmt(p->gpu, "rgba8");
+    p->osd_fmt[SUBBITMAP_BGRA] = pl_find_named_fmt(p->gpu, "rgba8");
 
     char *cache_file = get_cache_file(p);
     if (cache_file) {
diff --git a/video/out/vo_sdl.c b/video/out/vo_sdl.c
index b50fc6d94c..adfcfb43d8 100644
--- a/video/out/vo_sdl.c
+++ b/video/out/vo_sdl.c
@@ -62,7 +62,7 @@ const struct formatmap_entry formats[] = {
     {SDL_PIXELFORMAT_RGBX8888, IMGFMT_RGB0, 0}, // has no alpha -> bad for OSD
     {SDL_PIXELFORMAT_BGR888, IMGFMT_0BGR, 0}, // BGR888 means XBGR8888
     {SDL_PIXELFORMAT_BGRX8888, IMGFMT_BGR0, 0}, // has no alpha -> bad for OSD
-    {SDL_PIXELFORMAT_ARGB8888, IMGFMT_ARGB, 1}, // matches SUBBITMAP_RGBA
+    {SDL_PIXELFORMAT_ARGB8888, IMGFMT_ARGB, 1}, // matches SUBBITMAP_BGRA
     {SDL_PIXELFORMAT_RGBA8888, IMGFMT_RGBA, 1},
     {SDL_PIXELFORMAT_ABGR8888, IMGFMT_ABGR, 1},
     {SDL_PIXELFORMAT_BGRA8888, IMGFMT_BGRA, 1},
@@ -71,7 +71,7 @@ const struct formatmap_entry formats[] = {
     {SDL_PIXELFORMAT_RGBX8888, IMGFMT_0BGR, 0}, // has no alpha -> bad for OSD
     {SDL_PIXELFORMAT_BGR888, IMGFMT_RGB0, 0}, // BGR888 means XBGR8888
     {SDL_PIXELFORMAT_BGRX8888, IMGFMT_0RGB, 0}, // has no alpha -> bad for OSD
-    {SDL_PIXELFORMAT_ARGB8888, IMGFMT_BGRA, 1}, // matches SUBBITMAP_RGBA
+    {SDL_PIXELFORMAT_ARGB8888, IMGFMT_BGRA, 1}, // matches SUBBITMAP_BGRA
     {SDL_PIXELFORMAT_RGBA8888, IMGFMT_ABGR, 1},
     {SDL_PIXELFORMAT_ABGR8888, IMGFMT_RGBA, 1},
     {SDL_PIXELFORMAT_BGRA8888, IMGFMT_ARGB, 1},
@@ -800,7 +800,7 @@ static void draw_osd(struct vo *vo)
     struct priv *vc = vo->priv;
 
     static const bool osdformats[SUBBITMAP_COUNT] = {
-        [SUBBITMAP_RGBA] = true,
+        [SUBBITMAP_BGRA] = true,
     };
 
     osd_draw(vo->osd, vc->osd_res, vc->osd_pts, 0, osdformats, draw_osd_cb, vo);
diff --git a/video/out/vo_vdpau.c b/video/out/vo_vdpau.c
index cae28cdd84..a9e115c8fa 100644
--- a/video/out/vo_vdpau.c
+++ b/video/out/vo_vdpau.c
@@ -596,7 +596,7 @@ static void generate_osd_part(struct vo *vo, struct sub_bitmaps *imgs)
     case SUBBITMAP_LIBASS:
         format = VDP_RGBA_FORMAT_A8;
         break;
-    case SUBBITMAP_RGBA:
+    case SUBBITMAP_BGRA:
         format = VDP_RGBA_FORMAT_B8G8R8A8;
         break;
     default:
@@ -687,7 +687,7 @@ static void draw_osd(struct vo *vo)
 
     bool formats[SUBBITMAP_COUNT] = {
         [SUBBITMAP_LIBASS] = vc->supports_a8,
-        [SUBBITMAP_RGBA] = true,
+        [SUBBITMAP_BGRA] = true,
     };
 
     double pts = vc->current_image ? vc->current_image->pts : 0;