--- a/script/bootstrap.py
+++ b/script/bootstrap.py
@@ -674,6 +674,7 @@ def build_gpl_x264_encoder(install_dir):
             f'--prefix={posix_install_dir}',
             '--enable-static',
             '--enable-pic',
+            '--disable-lavf',
             shell='bash')
         cmd('make', '-j', CPU_COUNT)
         cmd('make', 'install')
@@ -798,6 +799,7 @@ def ffmpeg_configure_opts(install_dir, a
         '--enable-filter=select',
         '--enable-filter=concat',
         '--enable-filter=ssim',
+        '--enable-lto',
     ]
     if os.name == 'nt':
         result.extend([