diff --git a/doc/APIchanges b/doc/APIchanges
index 9bc3f1acdc..c77a6070c8 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -13,6 +13,10 @@ libavutil:     2013-12-xx
 
 API changes, most recent first:
 
+2014-05-24 - xxxxxxx - lavf 55.19.0 - avformat.h
+  Add strict_std_compliance and related AVOptions to support experimental
+  muxing.
+
 2014-05-19 - xxxxxxx - lavf 55.18.0 - avformat.h
   Add av_stream_get_side_data() to access stream-level side data
   in the same way as av_packet_get_side_data().
diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index f6b38d5778..b17c791eac 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -1158,6 +1158,11 @@ typedef struct AVFormatContext {
      */
     int64_t max_interleave_delta;
 
+    /**
+     * Allow non-standard and experimental extension
+     * @see AVCodecContext.strict_std_compliance
+     */
+    int strict_std_compliance;
     /*****************************************************************
      * All fields below this line are not part of the public API. They
      * may not be used outside of libavformat and can be changed and
diff --git a/libavformat/options_table.h b/libavformat/options_table.h
index 70194202d7..ac052c805b 100644
--- a/libavformat/options_table.h
+++ b/libavformat/options_table.h
@@ -60,6 +60,11 @@ static const AVOption avformat_options[] = {
 {"buffer", "detect improper bitstream length", 0, AV_OPT_TYPE_CONST, {.i64 = AV_EF_BUFFER }, INT_MIN, INT_MAX, D, "err_detect"},
 {"explode", "abort decoding on minor error detection", 0, AV_OPT_TYPE_CONST, {.i64 = AV_EF_EXPLODE }, INT_MIN, INT_MAX, D, "err_detect"},
 {"max_interleave_delta", "maximum buffering duration for interleaving", OFFSET(max_interleave_delta), AV_OPT_TYPE_INT64, { .i64 = 10000000 }, 0, INT64_MAX, E },
+{"f_strict", "how strictly to follow the standards (deprecated; use strict, save via avconv)", OFFSET(strict_std_compliance), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, D|E, "strict"},
+{"strict", "how strictly to follow the standards", OFFSET(strict_std_compliance), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, INT_MIN, INT_MAX, D|E, "strict"},
+{"strict", "strictly conform to all the things in the spec no matter what the consequences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_COMPLIANCE_STRICT }, INT_MIN, INT_MAX, D|E, "strict"},
+{"normal", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_COMPLIANCE_NORMAL }, INT_MIN, INT_MAX, D|E, "strict"},
+{"experimental", "allow non-standardized experimental variants", 0, AV_OPT_TYPE_CONST, {.i64 = FF_COMPLIANCE_EXPERIMENTAL }, INT_MIN, INT_MAX, D|E, "strict"},
 {NULL},
 };
 
diff --git a/libavformat/version.h b/libavformat/version.h
index 20a58d2222..0a9cb06f79 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -30,7 +30,7 @@
 #include "libavutil/version.h"
 
 #define LIBAVFORMAT_VERSION_MAJOR 55
-#define LIBAVFORMAT_VERSION_MINOR 18
+#define LIBAVFORMAT_VERSION_MINOR 19
 #define LIBAVFORMAT_VERSION_MICRO  0
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \