avformat/rtpdec_h264: Ignore invalid sprop-parameter-sets missing PPS

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

libavformat/rtpdec_h264.c

@@ -166,6 +166,10 @@ static int sdp_parse_fmtp_config_h264(AVFormatContext *s,
             parse_profile_level_id(s, h264_data, value);
     } else if (!strcmp(attr, "sprop-parameter-sets")) {
         int ret;
+        if (value[strlen(value) - 1] == ',') {
+            av_log(s, AV_LOG_WARNING, "Missing PPS in sprop-parameter-sets, ignoring\n");
+            return 0;
+        }
         codec->extradata_size = 0;
         av_freep(&codec->extradata);
         ret = ff_h264_parse_sprop_parameter_sets(s, &codec->extradata,