avformat/mpegtsenc: make the pes packet length omission optional

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/mpegtsenc.c

@@ -86,6 +86,8 @@ typedef struct MpegTSWrite {
     int flags;
     int copyts;
     int tables_version;
+
+    int omit_video_pes_length
 } MpegTSWrite;
 
 /* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
@@ -124,6 +126,8 @@ static const AVOption options[] = {
       offsetof(MpegTSWrite, copyts), AV_OPT_TYPE_INT, {.i64=-1}, -1, 1, AV_OPT_FLAG_ENCODING_PARAM},
     { "tables_version", "set PAT, PMT and SDT version",
       offsetof(MpegTSWrite, tables_version), AV_OPT_TYPE_INT, {.i64=0}, 0, 31, AV_OPT_FLAG_ENCODING_PARAM},
+    { "omit_video_pes_length", "Ommit the PES packet length for video packets",
+      offsetof(MpegTSWrite, omit_video_pes_length), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
     { NULL },
 };
 
@@ -1066,7 +1070,7 @@ static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
             }
             if (len > 0xffff)
                 len = 0;
-            if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
+            if (ts->omit_video_pes_length && st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
                 len = 0;
             }
             *q++ = len >> 8;