X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=ffmpeg_opt.c;h=1d0cff20d709b1d2366223ee7620ffcacd37c492;hb=d6e87190fd0725f3517493f67dca6f8f264bb370;hp=23dbb3eba0319f545983334edbd0a529c1107ade;hpb=de31814ab07fd971d24c66a5e1ecf464b7ebe033;p=ffmpeg

diff --git a/ffmpeg_opt.c b/ffmpeg_opt.c
index 23dbb3eba03..1d0cff20d70 100644
--- a/ffmpeg_opt.c
+++ b/ffmpeg_opt.c
@@ -367,7 +367,7 @@ static int opt_map_channel(void *optctx, const char *opt, const char *arg)
 }
 
 /**
- * Parse a metadata specifier in arg.
+ * Parse a metadata specifier passed as 'arg' parameter.
  * @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
  * @param index for type c/p, chapter/program index is written here
  * @param stream_spec for type s, the stream specifier is written here
@@ -541,10 +541,8 @@ static AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVStream *
         return avcodec_find_decoder(st->codec->codec_id);
 }
 
-/**
- * Add all the streams from the given input file to the global
- * list of input streams.
- */
+/* Add all the streams from the given input file to the global
+ * list of input streams. */
 static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
 {
     int i;
@@ -581,6 +579,9 @@ static void add_input_streams(OptionsContext *o, AVFormatContext *ic)
 
         ist->dec = choose_decoder(o, ic, st);
 
+        ist->reinit_filters = -1;
+        MATCH_PER_STREAM_OPT(reinit_filters, i, ist->reinit_filters, ic, st);
+
         switch (dec->codec_type) {
         case AVMEDIA_TYPE_VIDEO:
             if(!ist->dec)
@@ -2160,7 +2161,7 @@ void show_help_default(const char *opt, const char *arg)
     const int per_file = OPT_SPEC | OPT_OFFSET | OPT_PERFILE;
     int show_advanced = 0, show_avoptions = 0;
 
-    if (opt) {
+    if (opt && *opt) {
         if (!strcmp(opt, "long"))
             show_advanced = 1;
         else if (!strcmp(opt, "full"))
@@ -2343,6 +2344,8 @@ const OptionDef options[] = {
         "set profile", "profile" },
     { "filter",         HAS_ARG | OPT_STRING | OPT_SPEC,             { .off = OFFSET(filters) },
         "set stream filterchain", "filter_list" },
+    { "reinit_filter",  HAS_ARG | OPT_INT | OPT_SPEC,                { .off = OFFSET(reinit_filters) },
+        "reinit filtergraph on input parameter changes", "" },
     { "filter_complex", HAS_ARG | OPT_EXPERT,                        { .func_arg = opt_filter_complex },
         "create a complex filtergraph", "graph_description" },
     { "stats",          OPT_BOOL,                                    { &print_stats },