@@ -8554,6 +8554,10 @@ useful if not UTF-8.

 @item stream_index, si

 Set subtitles stream index. @code{subtitles} filter only.

+

+@item force_style

+Override default style or script info parameters of the subtitles. It accepts a

+string containing ASS style format @code{KEY=VALUE} couples separated by ",".

 @end table

 If the first key is not specified, it is assumed that the first value

@@ -8580,6 +8584,12 @@ To render the second subtitles stream from that file, use:

 subtitles=video.mkv:si=1

 @end example

+To make the subtitles stream from @file{sub.srt} appear in transparent green

+@code{DejaVu Serif}, use:

+@example

+subtitles=sub.srt:force_style='FontName=DejaVu Serif,PrimaryColour=&HAA00FF00'

+@end example

+

 @section super2xsai

 Scale the input by 2x and smooth using the Super2xSaI (Scale and

@@ -31,7 +31,7 @@

 #define LIBAVFILTER_VERSION_MAJOR  5

 #define LIBAVFILTER_VERSION_MINOR  9

-#define LIBAVFILTER_VERSION_MICRO 103

+#define LIBAVFILTER_VERSION_MICRO 104

 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \

                                                LIBAVFILTER_VERSION_MINOR, \

@@ -51,6 +51,7 @@ typedef struct {

     ASS_Track    *track;

     char *filename;

     char *charenc;

+    char *force_style;

     int stream_index;

     uint8_t rgba_map[4];

     int     pix_step[4];       ///< steps per pixel for each plane of the main output

@@ -260,6 +261,7 @@ static const AVOption subtitles_options[] = {

     {"charenc",      "set input character encoding", OFFSET(charenc),      AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, FLAGS},

     {"stream_index", "set stream index",             OFFSET(stream_index), AV_OPT_TYPE_INT,    { .i64 = -1 }, -1,       INT_MAX,  FLAGS},

     {"si",           "set stream index",             OFFSET(stream_index), AV_OPT_TYPE_INT,    { .i64 = -1 }, -1,       INT_MAX,  FLAGS},

+    {"force_style",  "force subtitle style",         OFFSET(force_style),  AV_OPT_TYPE_STRING, {.str = NULL}, CHAR_MIN, CHAR_MAX, FLAGS},

     {NULL},

 };

@@ -392,6 +394,27 @@ static av_cold int init_subtitles(AVFilterContext *ctx)

     if (ret < 0)

         goto end;

+    if (ass->force_style) {

+        char **list = NULL;

+        char *temp = NULL;

+        char *ptr = av_strtok(ass->force_style, ",", &temp);

+        int i = 0;

+        while (ptr) {

+            av_dynarray_add(&list, &i, ptr);

+            if (!list) {

+                ret = AVERROR(ENOMEM);

+                goto end;

+            }

+            ptr = av_strtok(NULL, ",", &temp);

+        }

+        av_dynarray_add(&list, &i, NULL);

+        if (!list) {

+            ret = AVERROR(ENOMEM);

+            goto end;

+        }

+        ass_set_style_overrides(ass->library, list);

+        av_free(list);

+    }

     /* Decode subtitles and push them into the renderer (libass) */

     if (dec_ctx->subtitle_header)

         ass_process_codec_private(ass->track,