Skip colorspace filter for unknown source metadata

pvd_mezzanine.py

@@ -86,6 +86,7 @@ class VideoProfile:
     target_space: str
     target_name: str
     needs_conversion: bool
+    can_convert_colorspace: bool
 
 
 @dataclass
@@ -214,6 +215,10 @@ def analyze_video(v_stream: dict) -> VideoProfile:
         or source_trc != target_trc
         or source_space != target_space
     )
+    can_convert_colorspace = all(
+        value not in ("unknown", None, "")
+        for value in (source_prim, source_trc, source_space)
+    )
 
     return VideoProfile(
         width=width,
@@ -228,6 +233,7 @@ def analyze_video(v_stream: dict) -> VideoProfile:
         target_space=target_space,
         target_name=target_name,
         needs_conversion=needs_conversion,
+        can_convert_colorspace=can_convert_colorspace,
     )
 
 
@@ -339,7 +345,7 @@ def build_video_filters(plan: JobPlan) -> list[str]:
     profile = plan.video_profile
     if profile.is_interlaced:
         filters.append("bwdif=mode=0:parity=auto")
-    if profile.needs_conversion:
+    if profile.needs_conversion and profile.can_convert_colorspace:
         filters.append(
             "colorspace="
             f"primaries={profile.target_prim}:"
@@ -497,6 +503,8 @@ def log_plan(plan: JobPlan, log: Callable[[str], None] = print) -> None:
     profile = plan.video_profile
     log(f"Quelle: {plan.input_file}")
     log(f"Video: {profile.width}x{profile.height} @ {profile.fps:.3f} fps, {profile.target_name}")
+    if profile.needs_conversion and not profile.can_convert_colorspace:
+        log("Farbraum: Quell-Metadaten unvollstaendig; setze Ziel-Metadaten ohne Colorspace-Filter.")
     log(f"MP4: {plan.pvd_mp4}")
     if plan.german_mov:
         log(f"Deutsche Audio-MOV: {plan.german_mov}")