[FFmpeg-cvslog] avformat/mxfenc: Remove redundant check

[Andreas Rheinhardt]

ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt at outlook.com> | Sun Nov  7 20:52:24 2021 +0100| [ea81c23c942088bf7099f176ac3cd0b993b64779] | committer: Andreas Rheinhardt

avformat/mxfenc: Remove redundant check

None of the muxers here has the AVFMT_NOSTREAMS flag set,
so it is checked generically that there are streams.

Reviewed-by: Tomas Härdin <tjoppen at acc.umu.se>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ea81c23c942088bf7099f176ac3cd0b993b64779
---

 libavformat/mxfenc.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/libavformat/mxfenc.c b/libavformat/mxfenc.c
index c36ebef932..d84cb6dd29 100644
--- a/libavformat/mxfenc.c
+++ b/libavformat/mxfenc.c
@@ -2507,9 +2507,6 @@ static int mxf_write_header(AVFormatContext *s)
     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
     int64_t timestamp = 0;
 
-    if (!s->nb_streams)
-        return -1;
-
     if (s->oformat == &ff_mxf_opatom_muxer && s->nb_streams !=1) {
         av_log(s, AV_LOG_ERROR, "there must be exactly one stream for mxf opatom\n");
         return -1;