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-rw-r--r--demux/demux_lavf.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/demux/demux_lavf.c b/demux/demux_lavf.c
index 467569a42c..074c6edc7e 100644
--- a/demux/demux_lavf.c
+++ b/demux/demux_lavf.c
@@ -920,6 +920,11 @@ static int demux_open_lavf(demuxer_t *demuxer, enum demux_check check)
demuxer->fully_read = priv->format_hack.fully_read;
+#ifdef AVFMTCTX_UNSEEKABLE
+ if (avfc->ctx_flags & AVFMTCTX_UNSEEKABLE)
+ demuxer->seekable = false;
+#endif
+
if (priv->avfc->duration > 0) {
demuxer->duration = (double)priv->avfc->duration / AV_TIME_BASE;
} else {