fixup! Allow specifying reencode's tmp dir

Author: benoit74

src/zimscraperlib/video/encoding.py

@@ -5,6 +5,7 @@
 from copy import deepcopy
 
 from zimscraperlib import logger
+from zimscraperlib.filesystem import path_from
 from zimscraperlib.logging import nicer_args_join
 
 
@@ -53,7 +54,7 @@ def reencode(
         failsafe - Run in failsafe mode
     """
 
-    with existing_tmp_path or tempfile.TemporaryDirectory() as tmp_dir:
+    with path_from(existing_tmp_path or tempfile.TemporaryDirectory()) as tmp_dir:
 
         tmp_path = pathlib.Path(tmp_dir).joinpath(f"video.tmp{dst_path.suffix}")
         args = _build_ffmpeg_args(