--- mux.c	2016-09-01 14:21:01.254840644 +0100
+++ new/mux.c	2016-09-01 14:18:01.000000000 +0100
@@ -597,11 +597,11 @@
         pkt->dts = st->pts_buffer[0];
     }
 
-    if (st->cur_dts && st->cur_dts != AV_NOPTS_VALUE &&
-        ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) &&
-          st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE &&
-          st->codecpar->codec_type != AVMEDIA_TYPE_DATA &&
-          st->cur_dts >= pkt->dts) || st->cur_dts > pkt->dts)) {
+// RF This patch helps prevent ffmpeg exiting unecessarily due to DTS issues in subtitles.
+// My idea is that DTS issues don't matter for subs, they only use PTS. In any case timing not mega critical.
+
+//    if (st->cur_dts && st->cur_dts != AV_NOPTS_VALUE && ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) && st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE && st->codecpar->codec_type != AVMEDIA_TYPE_DATA && st->cur_dts >= pkt->dts) || st->cur_dts > pkt->dts)) {
+    if (st->cur_dts && st->cur_dts != AV_NOPTS_VALUE && ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) && st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE && st->codecpar->codec_type != AVMEDIA_TYPE_DATA && st->cur_dts >= pkt->dts) || (st->cur_dts > pkt->dts && st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE && st->codecpar->codec_type != AVMEDIA_TYPE_DATA))) {
         av_log(s, AV_LOG_ERROR,
                "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %s >= %s\n",
                st->index, av_ts2str(st->cur_dts), av_ts2str(pkt->dts));