[FFmpeg-cvslog] ffmpeg_filter: Check that filters have connected outputs before accessing the output stream

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Sun Jul 19 14:56:09 2015 +0200| [2dbaec690d9f8e25e12b80e1162097e96b30ddc8] | committer: Michael Niedermayer

ffmpeg_filter: Check that filters have connected outputs before accessing the output stream

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2dbaec690d9f8e25e12b80e1162097e96b30ddc8
---

 ffmpeg_filter.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/ffmpeg_filter.c b/ffmpeg_filter.c
index b452fe0..950e4d0 100644
--- a/ffmpeg_filter.c
+++ b/ffmpeg_filter.c
@@ -641,6 +641,11 @@ int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOu
     av_freep(&ofilter->name);
     DESCRIBE_FILTER_LINK(ofilter, out, 0);
 
+    if (!ofilter->ost) {
+        av_log(NULL, AV_LOG_FATAL, "Filter %s has a unconnected output\n", ofilter->name);
+        exit_program(1);
+    }
+
     switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
     case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
     case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);