diff --git a/audio/out/ao_coreaudio_exclusive.c b/audio/out/ao_coreaudio_exclusive.c
index cd94f0e6b8..a60fcc1a97 100644
--- a/audio/out/ao_coreaudio_exclusive.c
+++ b/audio/out/ao_coreaudio_exclusive.c
@@ -461,6 +461,7 @@ const struct ao_driver audio_out_coreaudio_exclusive = {
         .hog_pid = -1,
         .stream = 0,
         .stream_idx = -1,
+        .changed_mixing = false,
     },
     .options = (const struct m_option[]){
         {"spdif-hack", OPT_BOOL(spdif_hack)},
diff --git a/audio/out/ao_oss.c b/audio/out/ao_oss.c
index 6ab0ca03f0..daa35da9d2 100644
--- a/audio/out/ao_oss.c
+++ b/audio/out/ao_oss.c
@@ -404,5 +404,6 @@ const struct ao_driver audio_out_oss = {
     .priv_size = sizeof(struct priv),
     .priv_defaults = &(const struct priv) {
         .dsp_fd = -1,
+        .playing = false,
     },
 };
diff --git a/filters/filter.c b/filters/filter.c
index e07caef131..eb757f5753 100644
--- a/filters/filter.c
+++ b/filters/filter.c
@@ -693,6 +693,7 @@ struct mp_hwdec_ctx *mp_filter_load_hwdec_device(struct mp_filter *f, int imgfmt
 
     struct hwdec_imgfmt_request params = {
         .imgfmt = imgfmt,
+        .probing = false,
     };
     hwdec_devices_request_for_img_fmt(info->hwdec_devs, &params);
 
diff --git a/input/cmd.h b/input/cmd.h
index 3ed07e8028..1c9fb3e815 100644
--- a/input/cmd.h
+++ b/input/cmd.h
@@ -85,6 +85,7 @@ enum mp_cmd_flags {
 struct mp_cmd_arg {
     const struct m_option *type;
     union {
+        bool b;
         int i;
         int64_t i64;
         float f;
diff --git a/input/input.c b/input/input.c
index dec8d0235d..03f75e40b7 100644
--- a/input/input.c
+++ b/input/input.c
@@ -1474,6 +1474,7 @@ void mp_input_bind_key(struct input_ctx *ictx, int key, bstr command)
         .cmd = bstrdup0(bs->binds, command),
         .location = talloc_strdup(bs->binds, "keybind-command"),
         .owner = bs,
+        .is_builtin = false,
         .num_keys = 1,
     };
     memcpy(bind->keys, &key, 1 * sizeof(bind->keys[0]));
diff --git a/player/command.c b/player/command.c
index dda734dc51..79be7aeae2 100644
--- a/player/command.c
+++ b/player/command.c
@@ -4574,8 +4574,8 @@ static void cmd_osd_overlay(void *p)
         .res_x  = cmd->args[3].v.i,
         .res_y  = cmd->args[4].v.i,
         .z      = cmd->args[5].v.i,
-        .hidden = cmd->args[6].v.i,
-        .out_rc = cmd->args[7].v.i ? rc : NULL,
+        .hidden = cmd->args[6].v.b,
+        .out_rc = cmd->args[7].v.b ? rc : NULL,
     };
 
     osd_set_external(mpctx->osd, &ov);
@@ -5516,7 +5516,7 @@ static void cmd_track_add(void *p)
     struct MPContext *mpctx = cmd->mpctx;
     int type = *(int *)cmd->priv;
     bool is_albumart = type == STREAM_VIDEO &&
-                       cmd->args[4].v.i;
+                       cmd->args[4].v.b;
 
     if (mpctx->stop_play) {
         cmd->success = false;
@@ -5694,11 +5694,11 @@ static void cmd_subprocess(void *p)
     struct mp_cmd_ctx *cmd = p;
     struct MPContext *mpctx = cmd->mpctx;
     char **args = cmd->args[0].v.str_list;
-    bool playback_only = cmd->args[1].v.i;
-    bool detach = cmd->args[5].v.i;
+    bool playback_only = cmd->args[1].v.b;
+    bool detach = cmd->args[5].v.b;
     char **env = cmd->args[6].v.str_list;
     bstr stdin_data = bstr0(cmd->args[7].v.s);
-    bool passthrough_stdin = cmd->args[8].v.i;
+    bool passthrough_stdin = cmd->args[8].v.b;
 
     if (env && !env[0])
         env = NULL; // do not actually set an empty environment
@@ -5727,8 +5727,8 @@ static void cmd_subprocess(void *p)
             .msgl = fd == 2 ? MSGL_ERR : MSGL_INFO,
         };
     }
-    fdctx[1].capture = cmd->args[3].v.i;
-    fdctx[2].capture = cmd->args[4].v.i;
+    fdctx[1].capture = cmd->args[3].v.b;
+    fdctx[2].capture = cmd->args[4].v.b;
 
     pthread_mutex_lock(&mpctx->abort_lock);
     cmd->abort->coupled_to_playback = playback_only;
@@ -6367,7 +6367,7 @@ const struct mp_cmd_def mp_cmds[] = {
                 .flags = MP_CMD_OPT_ARG},
             {"title", OPT_STRING(v.s), .flags = MP_CMD_OPT_ARG},
             {"lang", OPT_STRING(v.s), .flags = MP_CMD_OPT_ARG},
-            {"albumart", OPT_FLAG(v.i), .flags = MP_CMD_OPT_ARG},
+            {"albumart", OPT_BOOL(v.b), .flags = MP_CMD_OPT_ARG},
         },
         .priv = &(const int){STREAM_VIDEO},
         .spawn_thread = true,
@@ -6485,15 +6485,15 @@ const struct mp_cmd_def mp_cmds[] = {
     { "subprocess", cmd_subprocess,
         {
             {"args", OPT_STRINGLIST(v.str_list)},
-            {"playback_only", OPT_FLAG(v.i), OPTDEF_INT(1)},
+            {"playback_only", OPT_BOOL(v.b), OPTDEF_INT(1)},
             {"capture_size", OPT_BYTE_SIZE(v.i64), M_RANGE(0, INT_MAX),
                 OPTDEF_INT64(64 * 1024 * 1024)},
-            {"capture_stdout", OPT_FLAG(v.i), .flags = MP_CMD_OPT_ARG},
-            {"capture_stderr", OPT_FLAG(v.i), .flags = MP_CMD_OPT_ARG},
-            {"detach", OPT_FLAG(v.i), .flags = MP_CMD_OPT_ARG},
+            {"capture_stdout", OPT_BOOL(v.b), .flags = MP_CMD_OPT_ARG},
+            {"capture_stderr", OPT_BOOL(v.b), .flags = MP_CMD_OPT_ARG},
+            {"detach", OPT_BOOL(v.b), .flags = MP_CMD_OPT_ARG},
             {"env", OPT_STRINGLIST(v.str_list), .flags = MP_CMD_OPT_ARG},
             {"stdin_data", OPT_STRING(v.s), .flags = MP_CMD_OPT_ARG},
-            {"passthrough_stdin", OPT_FLAG(v.i), .flags = MP_CMD_OPT_ARG},
+            {"passthrough_stdin", OPT_BOOL(v.b), .flags = MP_CMD_OPT_ARG},
         },
         .spawn_thread = true,
         .can_abort = true,
@@ -6596,8 +6596,8 @@ const struct mp_cmd_def mp_cmds[] = {
             {"res_x", OPT_INT(v.i), OPTDEF_INT(0)},
             {"res_y", OPT_INT(v.i), OPTDEF_INT(720)},
             {"z", OPT_INT(v.i), OPTDEF_INT(0)},
-            {"hidden", OPT_FLAG(v.i), OPTDEF_INT(0)},
-            {"compute_bounds", OPT_FLAG(v.i), OPTDEF_INT(0)},
+            {"hidden", OPT_BOOL(v.b), OPTDEF_INT(0)},
+            {"compute_bounds", OPT_BOOL(v.b), OPTDEF_INT(0)},
         },
         .is_noisy = true,
     },
diff --git a/stream/stream_slice.c b/stream/stream_slice.c
index 88a611c4ad..c0dbeeb2af 100644
--- a/stream/stream_slice.c
+++ b/stream/stream_slice.c
@@ -177,4 +177,5 @@ const stream_info_t stream_info_slice = {
     .name = "slice",
     .open2 = open2,
     .protocols = (const char*const[]){ "slice", NULL },
+    .can_write = false,
 };
diff --git a/video/filter/vf_d3d11vpp.c b/video/filter/vf_d3d11vpp.c
index 3f306e4be7..73f7d70dea 100644
--- a/video/filter/vf_d3d11vpp.c
+++ b/video/filter/vf_d3d11vpp.c
@@ -429,6 +429,7 @@ static struct mp_filter *vf_d3d11vpp_create(struct mp_filter *parent,
 
     struct hwdec_imgfmt_request params = {
         .imgfmt = IMGFMT_D3D11,
+        .probing = false,
     };
     hwdec_devices_request_for_img_fmt(info->hwdec_devs, &params);
 
diff --git a/video/out/d3d11/context.c b/video/out/d3d11/context.c
index 2d736203fd..a86b574fdd 100644
--- a/video/out/d3d11/context.c
+++ b/video/out/d3d11/context.c
@@ -221,6 +221,7 @@ static bool d3d11_start_frame(struct ra_swapchain *sw, struct ra_fbo *out_fbo)
 
     *out_fbo = (struct ra_fbo) {
         .tex = p->backbuffer,
+        .flip = false,
         .color_space = p->swapchain_csp
     };
     return true;
diff --git a/video/out/d3d11/hwdec_d3d11va.c b/video/out/d3d11/hwdec_d3d11va.c
index a080e5f618..73c42e94ff 100644
--- a/video/out/d3d11/hwdec_d3d11va.c
+++ b/video/out/d3d11/hwdec_d3d11va.c
@@ -37,8 +37,7 @@ const struct m_sub_options d3d11va_conf = {
         {"d3d11va-zero-copy", OPT_BOOL(zero_copy)},
         {0}
     },
-    .defaults = &(const struct d3d11va_opts) {
-    },
+    .defaults = &(const struct d3d11va_opts) {0},
     .size = sizeof(struct d3d11va_opts)
 };
 
diff --git a/video/out/gpu/user_shaders.c b/video/out/gpu/user_shaders.c
index 03842377f8..708de87485 100644
--- a/video/out/gpu/user_shaders.c
+++ b/video/out/gpu/user_shaders.c
@@ -170,6 +170,7 @@ static bool parse_hook(struct mp_log *log, struct bstr *body,
     *out = (struct gl_user_shader_hook){
         .pass_desc = bstr0("(unknown)"),
         .offset = identity_trans,
+        .align_offset = false,
         .width = {{ SZEXP_VAR_W, { .varname = bstr0("HOOKED") }}},
         .height = {{ SZEXP_VAR_H, { .varname = bstr0("HOOKED") }}},
         .cond = {{ SZEXP_CONST, { .cval = 1.0 }}},
diff --git a/video/out/gpu/video.c b/video/out/gpu/video.c
index 90b22dab23..21c7f50910 100644
--- a/video/out/gpu/video.c
+++ b/video/out/gpu/video.c
@@ -25,7 +25,6 @@
 #include <libavutil/common.h>
 #include <libavutil/lfg.h>
 
-#include "options/m_option.h"
 #include "video.h"
 
 #include "misc/bstr.h"
diff --git a/video/out/placebo/ra_pl.c b/video/out/placebo/ra_pl.c
index a008e28c5f..c7cf19efdc 100644
--- a/video/out/placebo/ra_pl.c
+++ b/video/out/placebo/ra_pl.c
@@ -153,6 +153,7 @@ bool mppl_wrap_tex(struct ra *ra, pl_tex pltex, struct ra_tex *out_tex)
             .downloadable = pltex->params.host_readable,
             // These don't exist upstream, so just pick something reasonable
             .src_linear = pltex->params.format->caps & PL_FMT_CAP_LINEAR,
+            .src_repeat = false,
         },
         .priv = (void *) pltex,
     };