The bitstream filters inserted by this option should not be optional.
They are needed to succesfully mux files in some cases, and to prevent
muxing broken files in others.

This is more in line with AVCodec.bsfs()

Signed-off-by: James Almer <jamr...@gmail.com>
---
 libavformat/avformat.h      | 4 +++-
 libavformat/mux.c           | 3 ---
 libavformat/options_table.h | 6 ++++--
 libavformat/version.h       | 3 +++
 4 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 4f2798a871..e39e5e4ada 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -1449,7 +1449,9 @@ typedef struct AVFormatContext {
 #endif
 #define AVFMT_FLAG_FAST_SEEK   0x80000 ///< Enable fast, but inaccurate seeks 
for some formats
 #define AVFMT_FLAG_SHORTEST   0x100000 ///< Stop muxing when the shortest 
stream stops.
-#define AVFMT_FLAG_AUTO_BSF   0x200000 ///< Add bitstream filters as requested 
by the muxer
+#if FF_API_LAVF_AUTO_BSF_FLAG
+#define AVFMT_FLAG_AUTO_BSF   0x200000 ///< Deprecated, does nothing.
+#endif
 
     /**
      * Maximum size of the data read from input for determining
diff --git a/libavformat/mux.c b/libavformat/mux.c
index ebb9102f11..382c20fc63 100644
--- a/libavformat/mux.c
+++ b/libavformat/mux.c
@@ -825,9 +825,6 @@ static int do_packet_auto_bsf(AVFormatContext *s, AVPacket 
*pkt) {
     AVStream *st = s->streams[pkt->stream_index];
     int i, ret;
 
-    if (!(s->flags & AVFMT_FLAG_AUTO_BSF))
-        return 1;
-
     if (s->oformat->check_bitstream) {
         if (!st->internal->bitstream_checked) {
             if ((ret = s->oformat->check_bitstream(s, pkt)) < 0)
diff --git a/libavformat/options_table.h b/libavformat/options_table.h
index b8fa47c6fd..8b1e6f3d18 100644
--- a/libavformat/options_table.h
+++ b/libavformat/options_table.h
@@ -39,7 +39,7 @@ static const AVOption avformat_options[] = {
 {"probesize", "set probing size", OFFSET(probesize), AV_OPT_TYPE_INT64, {.i64 
= 5000000 }, 32, INT64_MAX, D},
 {"formatprobesize", "number of bytes to probe file format", 
OFFSET(format_probesize), AV_OPT_TYPE_INT, {.i64 = PROBE_BUF_MAX}, 0, 
INT_MAX-1, D},
 {"packetsize", "set packet size", OFFSET(packet_size), AV_OPT_TYPE_INT, {.i64 
= DEFAULT }, 0, INT_MAX, E},
-{"fflags", NULL, OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = AVFMT_FLAG_AUTO_BSF 
}, INT_MIN, INT_MAX, D|E, "fflags"},
+{"fflags", NULL, OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, INT_MIN, 
INT_MAX, D|E, "fflags"},
 {"flush_packets", "reduce the latency by flushing out packets immediately", 0, 
AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_FLUSH_PACKETS }, INT_MIN, INT_MAX, E, 
"fflags"},
 {"ignidx", "ignore index", 0, AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_IGNIDX }, 
INT_MIN, INT_MAX, D, "fflags"},
 {"genpts", "generate pts", 0, AV_OPT_TYPE_CONST, {.i64 = AVFMT_FLAG_GENPTS }, 
INT_MIN, INT_MAX, D, "fflags"},
@@ -57,7 +57,9 @@ static const AVOption avformat_options[] = {
 {"seek2any", "allow seeking to non-keyframes on demuxer level when supported", 
OFFSET(seek2any), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, D},
 {"bitexact", "do not write random/volatile data", 0, AV_OPT_TYPE_CONST, { .i64 
= AVFMT_FLAG_BITEXACT }, 0, 0, E, "fflags" },
 {"shortest", "stop muxing with the shortest stream", 0, AV_OPT_TYPE_CONST, { 
.i64 = AVFMT_FLAG_SHORTEST }, 0, 0, E, "fflags" },
-{"autobsf", "add needed bsfs automatically", 0, AV_OPT_TYPE_CONST, { .i64 = 
AVFMT_FLAG_AUTO_BSF }, 0, 0, E, "fflags" },
+#if FF_API_LAVF_AUTO_BSF_FLAG
+{"autobsf", "deprecated, does nothing", 0, AV_OPT_TYPE_CONST, { .i64 = 
AVFMT_FLAG_AUTO_BSF }, 0, 0, E, "fflags" },
+#endif
 {"analyzeduration", "specify how many microseconds are analyzed to probe the 
input", OFFSET(max_analyze_duration), AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, 
INT64_MAX, D},
 {"cryptokey", "decryption key", OFFSET(key), AV_OPT_TYPE_BINARY, {.dbl = 0}, 
0, 0, D},
 {"indexmem", "max memory used for timestamp index (per stream)", 
OFFSET(max_index_size), AV_OPT_TYPE_INT, {.i64 = 1<<20 }, 0, INT_MAX, D},
diff --git a/libavformat/version.h b/libavformat/version.h
index feb1461c41..d2427dd875 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -82,6 +82,9 @@
 #ifndef FF_API_OLD_AVIO_EOF_0
 #define FF_API_OLD_AVIO_EOF_0           (LIBAVFORMAT_VERSION_MAJOR < 59)
 #endif
+#ifndef FF_API_LAVF_AUTO_BSF_FLAG
+#define FF_API_LAVF_AUTO_BSF_FLAG       (LIBAVFORMAT_VERSION_MAJOR < 59)
+#endif
 
 
 #ifndef FF_API_R_FRAME_RATE
-- 
2.15.0

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