---
libavformat/mux.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/libavformat/mux.c b/libavformat/mux.c
index 7a51578..b10180e 100644
--- a/libavformat/mux.c
+++ b/libavformat/mux.c
@@ -127,6 +127,20 @@ FF_DISABLE_DEPRECATION_WARNINGS
FF_ENABLE_DEPRECATION_WARNINGS
#endif
+#if FF_API_LAVF_AVCTX
+FF_DISABLE_DEPRECATION_WARNINGS
+ if (st->codecpar->codec_type == AVMEDIA_TYPE_UNKNOWN &&
+ st->codec->codec_type != AVMEDIA_TYPE_UNKNOWN) {
+ av_log(s, AV_LOG_WARNING, "Using AVStream.codec to pass codec "
+ "parameters to muxers is deprecated, use AVStream.codecpar "
+ "instead.\n");
+ ret = avcodec_parameters_from_context(st->codecpar, st->codec);
+ if (ret < 0)
+ goto fail;
+ }
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+
if (!st->time_base.num) {
/* fall back on the default timebase values */
if (codec->codec_type == AVMEDIA_TYPE_AUDIO && codec->sample_rate)
--
2.0.0
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