ffmpeg | branch: master | Limin Wang <lance.lmw...@gmail.com> | Sun Aug  2 
21:07:04 2020 +0800| [ad49dd7694a504d8f205b1a6a9e5347354be12d0] | committer: 
Limin Wang

avcodec/mpeg12enc: support mpeg2 encoder const level

Signed-off-by: Limin Wang <lance.lmw...@gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ad49dd7694a504d8f205b1a6a9e5347354be12d0
---

 doc/encoders.texi      | 10 ++++++++++
 libavcodec/mpeg12enc.c |  6 ++++++
 2 files changed, 16 insertions(+)

diff --git a/doc/encoders.texi b/doc/encoders.texi
index de0472e225..13aa5dee41 100644
--- a/doc/encoders.texi
+++ b/doc/encoders.texi
@@ -2902,6 +2902,16 @@ SNR Scalable
 @item simple
 @end table
 
+@item level
+Select the mpeg2 level to encode:
+
+@table @samp
+@item high
+@item high1440
+@item main
+@item low
+@end table
+
 @item seq_disp_ext @var{integer}
 Specifies if the encoder should write a sequence_display_extension to the
 output.
diff --git a/libavcodec/mpeg12enc.c b/libavcodec/mpeg12enc.c
index 9fbbcef607..f246427eeb 100644
--- a/libavcodec/mpeg12enc.c
+++ b/libavcodec/mpeg12enc.c
@@ -1167,6 +1167,12 @@ static const AVOption mpeg2_options[] = {
     {     "secam",        NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = 
VIDEO_FORMAT_SECAM      },  0, 0, VE, "video_format" },
     {     "mac",          NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = 
VIDEO_FORMAT_MAC        },  0, 0, VE, "video_format" },
     {     "unspecified",  NULL, 0, AV_OPT_TYPE_CONST,  {.i64 = 
VIDEO_FORMAT_UNSPECIFIED},  0, 0, VE, "video_format" },
+#define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, { .i64 = value }, 
0, 0, VE, "avctx.level"
+    { LEVEL("high",     4) },
+    { LEVEL("high1440", 6) },
+    { LEVEL("main",     8) },
+    { LEVEL("low",     10) },
+#undef LEVEL
     FF_MPV_COMMON_OPTS
     FF_MPEG2_PROFILE_OPTS
     { NULL },

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