ffmpeg-non-standard-hevc-over-flv.patch

diff --git a/libavformat/flv.h b/libavformat/flv.h
index f710963..62297ed 100644
--- a/libavformat/flv.h
+++ b/libavformat/flv.h
@@ -116,6 +116,7 @@ enum {
     FLV_CODECID_H264    = 7,
     FLV_CODECID_REALH263= 8,
     FLV_CODECID_MPEG4   = 9,
+    FLV_CODECID_HEVC    = 12,
 };
 
 enum {
diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c
index 22a9b9e..dfbdaa6 100644
--- a/libavformat/flvdec.c
+++ b/libavformat/flvdec.c
@@ -335,6 +335,7 @@ static int flv_same_video_codec(AVCodecParameters *vpar, uint32_t flv_codecid)
 
     switch (flv_codecid) {
     case MKBETAG('h', 'v', 'c', '1'):
+    case FLV_CODECID_HEVC:
         return vpar->codec_id == AV_CODEC_ID_HEVC;
     case MKBETAG('a', 'v', '0', '1'):
         return vpar->codec_id == AV_CODEC_ID_AV1;
@@ -367,6 +368,7 @@ static int flv_set_video_codec(AVFormatContext *s, AVStream *vstream,
 
     switch (flv_codecid) {
     case MKBETAG('h', 'v', 'c', '1'):
+    case FLV_CODECID_HEVC:
         par->codec_id = AV_CODEC_ID_HEVC;
         vstreami->need_parsing = AVSTREAM_PARSE_HEADERS;
         break;
@@ -1463,7 +1465,7 @@ retry_duration:
         }
 
         if (st->codecpar->codec_id == AV_CODEC_ID_H264 || st->codecpar->codec_id == AV_CODEC_ID_MPEG4 ||
-            (st->codecpar->codec_id == AV_CODEC_ID_HEVC && type == PacketTypeCodedFrames)) {
+            (st->codecpar->codec_id == AV_CODEC_ID_HEVC && (!enhanced_flv || type == PacketTypeCodedFrames))) {
             // sign extension
             int32_t cts = (avio_rb24(s->pb) + 0xff800000) ^ 0xff800000;
             pts = av_sat_add64(dts, cts);