remove only necessary fields

Author: farkob

labelbox/data/serialization/ndjson/converter.py

@@ -39,4 +39,9 @@ def serialize(
             A generator for accessing the ndjson representation of the data
         """
         for example in NDLabel.from_common(labels):
-            yield example.dict(by_alias=True, exclude_none=True)
+            res = example.dict(by_alias=True)
+            if res.schema_id is None:
+                res.pop('schema_id')
+            if res.name is None:
+                res.pop('name')
+            yield res

labelbox/data/serialization/ndjson/label.py

@@ -95,7 +95,7 @@ def _create_video_annotations(
             if isinstance(
                     annot,
                 (VideoClassificationAnnotation, VideoObjectAnnotation)):
-                video_annotations[annot.name or annot.schema_id].append(annot)
+                video_annotations[annot.schema_id or annot.name].append(annot)
 
         for annotation_group in video_annotations.values():
             consecutive_frames = cls._get_consecutive_frames(