FFmpeg: Added writing of WebM containers

This commit adds support for the WebM container. Previously we only
supported the WebM/VP9 video codec, but still required that it was
stored in a Matroska, MP4, or other compatible container format.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D5156

release/scripts/startup/bl_ui/properties_output.py

@@ -376,7 +376,7 @@ class RENDER_PT_encoding_video(RenderOutputButtonsPanel, Panel):
         layout = self.layout
         ffmpeg = context.scene.render.ffmpeg
 
-        needs_codec = ffmpeg.format in {'AVI', 'QUICKTIME', 'MKV', 'OGG', 'MPEG4'}
+        needs_codec = ffmpeg.format in {'AVI', 'QUICKTIME', 'MKV', 'OGG', 'MPEG4', 'WEBM'}
         if needs_codec:
             layout.prop(ffmpeg, "codec")
 

source/blender/blenkernel/BKE_writeffmpeg.h

@@ -43,6 +43,7 @@ enum {
   FFMPEG_MKV = 9,
   FFMPEG_OGG = 10,
   FFMPEG_INVALID = 11,
+  FFMPEG_WEBM = 12,
 };
 
 enum {

source/blender/blenkernel/intern/writeffmpeg.c

@@ -319,6 +319,10 @@ static const char **get_file_extensions(int format)
       static const char *rv[] = {".ogv", ".ogg", NULL};
       return rv;
     }
+    case FFMPEG_WEBM: {
+      static const char *rv[] = {".webm", NULL};
+      return rv;
+    }
     default:
       return NULL;
   }

source/blender/makesrna/intern/rna_scene.c

@@ -5171,6 +5171,7 @@ static void rna_def_scene_ffmpeg_settings(BlenderRNA *brna)
       {FFMPEG_OGG, "OGG", 0, "Ogg", ""},
       {FFMPEG_MKV, "MKV", 0, "Matroska", ""},
       {FFMPEG_FLV, "FLASH", 0, "Flash", ""},
+      {FFMPEG_WEBM, "WEBM", 0, "WebM", ""},
       {0, NULL, 0, NULL, NULL},
   };