[FFmpeg-cvslog] lavc/qsvenc_hevc: restore the default gop size

[Haihao Xiang]

ffmpeg | branch: master | Haihao Xiang <haihao.xiang at intel.com> | Fri Aug 11 14:35:41 2023 +0800| [a7f24d79b8eeb4f4ab78916ef08cc997f2381cc9] | committer: Haihao Xiang

lavc/qsvenc_hevc: restore the default gop size

commit a3c0a3e changed the default settings and expected the runtime can
choose a best value. However the runtime doesn't set a valid gop size
for hevc encoder, hence the output steam is non-seekable, which is
inconvenient to user [1][2]

[1] https://github.com/intel/media-driver/issues/1576
[2] https://ffmpeg.org/pipermail/ffmpeg-user/2023-August/056716.html

Signed-off-by: Haihao Xiang <haihao.xiang at intel.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a7f24d79b8eeb4f4ab78916ef08cc997f2381cc9
---

 libavcodec/qsvenc_hevc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/qsvenc_hevc.c b/libavcodec/qsvenc_hevc.c
index 5e23ca9647..c5b7ac7cc4 100644
--- a/libavcodec/qsvenc_hevc.c
+++ b/libavcodec/qsvenc_hevc.c
@@ -376,7 +376,7 @@ static const AVClass class = {
 static const FFCodecDefault qsv_enc_defaults[] = {
     { "b",         "1M"    },
     { "refs",      "0"     },
-    { "g",         "-1"    },
+    { "g",         "248"   },
     { "bf",        "-1"    },
     { "qmin",      "-1"    },
     { "qmax",      "-1"    },