Added support for the WEBM/VP9 video codec

WEBM is the codec name, and VP9 is the encoder (the older encoder "VP8"
is less efficient than VP9).

WEBM/VP9 and h.264 both have options to control the file size versus
compression time (e.g. fast but big, or slow and small, for the same
output quality). Since WEBM/VP9 only has three choices, I've chosen to
map those to 3 of the 9 possible choices of h.264:

- BEST → SLOWER
- GOOD → MEDIUM
- REALTIME → SUPERFAST

The VERYSLOW and ULTRAFAST options give very little extra benefit.

Reviewed by: @Severin

1 files changed, 17 insertions, 0 deletions

diff --git a/source/blender/blenloader/intern/versioning_270.c b/source/blender/blenloader/intern/versioning_270.c
index f1c40aae399..e9de7919d25 100644
--- a/source/blender/blenloader/intern/versioning_270.c
+++ b/source/blender/blenloader/intern/versioning_270.c
@@ -1796,6 +1796,23 @@ void blo_do_versions_270(FileData *fd, Library *UNUSED(lib), Main *main)
 				}
 			}
 		}
+
+		for (Scene *scene = main->scene.first; scene; scene = scene->id.next) {
+			int preset = scene->r.ffcodecdata.ffmpeg_preset;
+			if (preset == FFM_PRESET_NONE || preset >= FFM_PRESET_GOOD) {
+				continue;
+			}
+			if (preset <= FFM_PRESET_FAST) {
+				preset = FFM_PRESET_REALTIME;
+			}
+			else if (preset >= FFM_PRESET_SLOW) {
+				preset = FFM_PRESET_BEST;
+			}
+			else {
+				preset = FFM_PRESET_GOOD;
+			}
+			scene->r.ffcodecdata.ffmpeg_preset = preset;
+		}
 	}
 }