diff --git a/libavformat/mov.c b/libavformat/mov.c index f0b4edc2ed..49c2d05d21 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -5094,7 +5094,7 @@ static int mov_read_sidx(MOVContext *c, AVIOContext *pb, MOVAtom atom) // See if the remaining bytes are just an mfra which we can ignore. is_complete = offset == stream_size; - if (!is_complete) { + if (!is_complete && (pb->seekable & AVIO_SEEKABLE_NORMAL)) { int64_t ret; int64_t original_pos = avio_tell(pb); int32_t mfra_size;