avformat/utils: Update codec_id before using it in the parser init

Fixes assertion failure

Fixes: input.avi

Found-by: 连一汉 <lianyihan@360.cn>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavformat/utils.c

@@ -3383,6 +3383,17 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
             if (!avctx->time_base.num)
                 avctx->time_base = st->time_base;
         }
+
+        /* check if the caller has overridden the codec id */
+#if FF_API_LAVF_AVCTX
+FF_DISABLE_DEPRECATION_WARNINGS
+        if (st->codec->codec_id != st->internal->orig_codec_id) {
+            st->codecpar->codec_id   = st->codec->codec_id;
+            st->codecpar->codec_type = st->codec->codec_type;
+            st->internal->orig_codec_id = st->codec->codec_id;
+        }
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
         // only for the split stuff
         if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
             st->parser = av_parser_init(st->codecpar->codec_id);
@@ -3399,16 +3410,6 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
             }
         }
 
-        /* check if the caller has overridden the codec id */
-#if FF_API_LAVF_AVCTX
-FF_DISABLE_DEPRECATION_WARNINGS
-        if (st->codec->codec_id != st->internal->orig_codec_id) {
-            st->codecpar->codec_id   = st->codec->codec_id;
-            st->codecpar->codec_type = st->codec->codec_type;
-            st->internal->orig_codec_id = st->codec->codec_id;
-        }
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
         if (st->codecpar->codec_id != st->internal->orig_codec_id)
             st->internal->orig_codec_id = st->codecpar->codec_id;