ff_ffplay: merge e971eef8c0d2ebe461bb17f19a590b53511cc8f2

Set -scan_all_pmts 1 in ffmpeg, ffplay and ffprobe if not set by user.

Fixes ticket #3762.

ijkmedia/ijkplayer/ff_ffplay.c

@@ -2158,6 +2158,7 @@ static int read_thread(void *arg)
     AVDictionary **opts;
     int orig_nb_streams;
     SDL_mutex *wait_mutex = SDL_CreateMutex();
+    int scan_all_pmts_set = 0;
     int last_error = 0;
     int64_t prev_io_tick_counter = 0;
     int64_t io_tick_counter = SDL_GetTickHR();
@@ -2172,6 +2173,10 @@ static int read_thread(void *arg)
     ic = avformat_alloc_context();
     ic->interrupt_callback.callback = decode_interrupt_cb;
     ic->interrupt_callback.opaque = is;
+    if (!av_dict_get(ffp->format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
+        av_dict_set(&ffp->format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
+        scan_all_pmts_set = 1;
+    }
     if (ffp->format_control_message) {
         av_format_set_control_message_cb(ic, ffp_format_control_message);
         av_format_set_opaque(ic, ffp);
@@ -2182,6 +2187,9 @@ static int read_thread(void *arg)
         ret = -1;
         goto fail;
     }
+    if (scan_all_pmts_set)
+        av_dict_set(&ffp->format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
+
     if ((t = av_dict_get(ffp->format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
 #ifdef FFP_MERGE