io-read-seek.patch

From db6f249e3d95b124c388f26e39f95b855b15dcdf Mon Sep 17 00:00:00 2001
From: Aman Gupta <aman@tmm1.net>
Date: Fri, 22 Mar 2019 17:54:38 -0700
Subject: [PATCH] avformat/utils: add hack to allow read seeks via io context

Signed-off-by: Aman Gupta <aman@tmm1.net>
---
 libavformat/utils.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavformat/utils.c b/libavformat/utils.c
index e5b85a31d9..05dc75c4ec 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -2486,6 +2486,9 @@ static int seek_frame_internal(AVFormatContext *s, int stream_index,
     if (s->iformat->read_seek) {
         ff_read_frame_flush(s);
         ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
+    } else if (s->pb->read_seek) {
+        ff_read_frame_flush(s);
+        ret = s->pb->read_seek(s->pb->opaque, stream_index, timestamp, flags);
     } else
         ret = -1;
     if (ret >= 0)