From dc054938d294ad16f359d048b8e30f7369a9c7df Mon Sep 17 00:00:00 2001
From: Hendrik Leppkes <h.leppkes@gmail.com>
Date: Sun, 11 Aug 2019 02:37:55 +0200
Subject: [PATCH] lavd/lavfi: set timebase for subcc streams

---
 libavdevice/lavfi.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavdevice/lavfi.c b/libavdevice/lavfi.c
index ca8f05f3f7..0040a4ef56 100644
--- a/libavdevice/lavfi.c
+++ b/libavdevice/lavfi.c
@@ -104,11 +104,14 @@ static int create_subcc_streams(AVFormatContext *avctx)
     for (stream_idx = 0; stream_idx < lavfi->nb_sinks; stream_idx++) {
         sink_idx = lavfi->stream_sink_map[stream_idx];
         if (lavfi->sink_stream_subcc_map[sink_idx]) {
+            AVFilterContext *sink = lavfi->sinks[lavfi->stream_sink_map[stream_idx]];
+            AVRational time_base = av_buffersink_get_time_base(sink);
             lavfi->sink_stream_subcc_map[sink_idx] = avctx->nb_streams;
             if (!(st = avformat_new_stream(avctx, NULL)))
                 return AVERROR(ENOMEM);
             st->codecpar->codec_id = AV_CODEC_ID_EIA_608;
             st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
+            avpriv_set_pts_info(st, 64, time_base.num, time_base.den);
         } else {
             lavfi->sink_stream_subcc_map[sink_idx] = -1;
         }
--
2.20.1.windows.1