diff --git a/cmdutils.c b/cmdutils.c
index eeb5e39099..443873b779 100644
--- a/cmdutils.c
+++ b/cmdutils.c
@@ -141,8 +141,8 @@ int64_t parse_time_or_die(const char *context, const char *timestr,
     return us;
 }
 
-void show_help_options(const OptionDef *options, const char *msg, int mask,
-                       int value)
+void show_help_options(const OptionDef *options, const char *msg, int req_flags,
+                       int rej_flags)
 {
     const OptionDef *po;
     int first;
@@ -150,19 +150,23 @@ void show_help_options(const OptionDef *options, const char *msg, int mask,
     first = 1;
     for (po = options; po->name != NULL; po++) {
         char buf[64];
-        if ((po->flags & mask) == value) {
-            if (first) {
-                printf("%s", msg);
-                first = 0;
-            }
-            av_strlcpy(buf, po->name, sizeof(buf));
-            if (po->flags & HAS_ARG) {
-                av_strlcat(buf, " ", sizeof(buf));
-                av_strlcat(buf, po->argname, sizeof(buf));
-            }
-            printf("-%-17s  %s\n", buf, po->help);
+
+        if (((po->flags & req_flags) != req_flags) ||
+            (po->flags & rej_flags))
+            continue;
+
+        if (first) {
+            printf("%s\n", msg);
+            first = 0;
         }
+        av_strlcpy(buf, po->name, sizeof(buf));
+        if (po->flags & HAS_ARG) {
+            av_strlcat(buf, " ", sizeof(buf));
+            av_strlcat(buf, po->argname, sizeof(buf));
+        }
+        printf("-%-17s  %s\n", buf, po->help);
     }
+    printf("\n");
 }
 
 void show_help_children(const AVClass *class, int flags)
diff --git a/cmdutils.h b/cmdutils.h
index f50eb173c0..fb2229fc50 100644
--- a/cmdutils.h
+++ b/cmdutils.h
@@ -148,7 +148,6 @@ typedef struct {
 #define OPT_STRING 0x0008
 #define OPT_VIDEO  0x0010
 #define OPT_AUDIO  0x0020
-#define OPT_GRAB   0x0040
 #define OPT_INT    0x0080
 #define OPT_FLOAT  0x0100
 #define OPT_SUBTITLE 0x0200
@@ -172,8 +171,16 @@ typedef struct {
     const char *argname;
 } OptionDef;
 
-void show_help_options(const OptionDef *options, const char *msg, int mask,
-                       int value);
+/**
+ * Print help for all options matching specified flags.
+ *
+ * @param options a list of options
+ * @param msg title of this group. Only printed if at least one option matches.
+ * @param req_flags print only options which have all those flags set.
+ * @param rej_flags don't print options which have any of those flags set.
+ */
+void show_help_options(const OptionDef *options, const char *msg, int req_flags,
+                       int rej_flags);
 
 /**
  * Show help for all options with given flags in class and all its
diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi
index 89c1eb84c7..ec8bed3c9d 100644
--- a/doc/ffmpeg.texi
+++ b/doc/ffmpeg.texi
@@ -639,13 +639,6 @@ lot.
 
 @end table
 
-@section Audio/Video grab options
-
-@table @option
-@item -isync (@emph{global})
-Synchronize read on input.
-@end table
-
 @section Advanced options
 
 @table @option
diff --git a/ffmpeg_opt.c b/ffmpeg_opt.c
index 0d5fecd16b..aba9a1b6ff 100644
--- a/ffmpeg_opt.c
+++ b/ffmpeg_opt.c
@@ -2144,29 +2144,20 @@ static int show_help(const char *opt, const char *arg)
     int flags = AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM;
     av_log_set_callback(log_callback_help);
     show_usage();
-    show_help_options(options, "Main options:\n",
-                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_SUBTITLE | OPT_GRAB, 0);
-    show_help_options(options, "\nAdvanced options:\n",
-                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_SUBTITLE | OPT_GRAB,
-                      OPT_EXPERT);
-    show_help_options(options, "\nVideo options:\n",
-                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
-                      OPT_VIDEO);
-    show_help_options(options, "\nAdvanced Video options:\n",
-                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
-                      OPT_VIDEO | OPT_EXPERT);
-    show_help_options(options, "\nAudio options:\n",
-                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
-                      OPT_AUDIO);
-    show_help_options(options, "\nAdvanced Audio options:\n",
-                      OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB,
-                      OPT_AUDIO | OPT_EXPERT);
-    show_help_options(options, "\nSubtitle options:\n",
-                      OPT_SUBTITLE | OPT_GRAB,
-                      OPT_SUBTITLE);
-    show_help_options(options, "\nAudio/Video grab options:\n",
-                      OPT_GRAB,
-                      OPT_GRAB);
+    show_help_options(options, "Main options:",
+                      0, OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_SUBTITLE);
+    show_help_options(options, "Advanced options:",
+                      OPT_EXPERT, OPT_AUDIO | OPT_VIDEO | OPT_SUBTITLE);
+    show_help_options(options, "Video options:",
+                      OPT_VIDEO, OPT_EXPERT | OPT_AUDIO);
+    show_help_options(options, "Advanced Video options:",
+                      OPT_EXPERT | OPT_VIDEO, OPT_AUDIO);
+    show_help_options(options, "Audio options:",
+                      OPT_AUDIO, OPT_EXPERT | OPT_VIDEO);
+    show_help_options(options, "Advanced Audio options:",
+                      OPT_EXPERT | OPT_AUDIO, OPT_VIDEO);
+    show_help_options(options, "Subtitle options:",
+                      OPT_SUBTITLE, 0);
     printf("\n");
     show_help_children(avcodec_get_class(), flags);
     show_help_children(avformat_get_class(), flags);
@@ -2426,12 +2417,11 @@ const OptionDef options[] = {
         "fix subtitles duration" },
 
     /* grab options */
-    { "vc", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_GRAB, { .func_arg = opt_video_channel },
+    { "vc", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_video_channel },
         "deprecated, use -channel", "channel" },
-    { "tvstd", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_GRAB, { .func_arg = opt_video_standard },
+    { "tvstd", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_video_standard },
         "deprecated, use -standard", "standard" },
-    { "isync", OPT_BOOL | OPT_EXPERT | OPT_GRAB, { &input_sync },
-        "sync read on input", "" },
+    { "isync", OPT_BOOL | OPT_EXPERT, { &input_sync }, "this option is deprecated and does nothing", "" },
 
     /* muxer options */
     { "muxdelay",   OPT_FLOAT | HAS_ARG | OPT_EXPERT | OPT_OFFSET, { .off = OFFSET(mux_max_delay) },
diff --git a/ffplay.c b/ffplay.c
index 5c7ab3670a..c28883c498 100644
--- a/ffplay.c
+++ b/ffplay.c
@@ -3027,10 +3027,8 @@ static int show_help(const char *opt, const char *arg)
 {
     av_log_set_callback(log_callback_help);
     show_usage();
-    show_help_options(options, "Main options:\n",
-                      OPT_EXPERT, 0);
-    show_help_options(options, "\nAdvanced options:\n",
-                      OPT_EXPERT, OPT_EXPERT);
+    show_help_options(options, "Main options:", 0, OPT_EXPERT);
+    show_help_options(options, "Advanced options:", OPT_EXPERT, 0);
     printf("\n");
     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
diff --git a/ffprobe.c b/ffprobe.c
index 0038956479..2046ec0f34 100644
--- a/ffprobe.c
+++ b/ffprobe.c
@@ -2076,7 +2076,7 @@ static int show_help(const char *opt, const char *arg)
 {
     av_log_set_callback(log_callback_help);
     show_usage();
-    show_help_options(options, "Main options:\n", 0, 0);
+    show_help_options(options, "Main options:", 0, 0);
     printf("\n");
 
     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
diff --git a/ffserver.c b/ffserver.c
index 51eb07a63e..c03278c0b1 100644
--- a/ffserver.c
+++ b/ffserver.c
@@ -4650,7 +4650,7 @@ static int show_help(const char *opt, const char *arg)
     printf("usage: ffserver [options]\n"
            "Hyper fast multi format Audio/Video streaming server\n");
     printf("\n");
-    show_help_options(options, "Main options:\n", 0, 0);
+    show_help_options(options, "Main options:", 0, 0);
     return 0;
 }