Separate recording logic from GUI

dlclivegui/cameras/backends/basler_backend.py

@@ -448,7 +448,7 @@ def _configure_frame_rate(self) -> None:
 
         fps = self._positive_float(getattr(self.settings, "fps", 0.0))
         if fps is None:
-            LOG.info("[Basler] FPS: auto/free-run, not forcing AcquisitionFrameRate")
+            LOG.debug("[Basler] FPS: auto/free-run, not forcing AcquisitionFrameRate")
             return
 
         enable = self._feature("AcquisitionFrameRateEnable")
@@ -465,7 +465,7 @@ def _configure_frame_rate(self) -> None:
             try:
                 min_v = rate.GetMin()
                 max_v = rate.GetMax()
-                LOG.info("[Basler] AcquisitionFrameRate range: min=%s max=%s requested=%s", min_v, max_v, fps)
+                LOG.debug("[Basler] AcquisitionFrameRate range: min=%s max=%s requested=%s", min_v, max_v, fps)
             except Exception:
                 pass
 
@@ -496,7 +496,7 @@ def _configure_frame_rate(self) -> None:
             if feature is not None:
                 readbacks[name] = self._feature_value(feature, None)
 
-        LOG.info("[Basler] FPS readback requested=%s values=%s", fps, readbacks)
+        LOG.debug("[Basler] Readback requested=%s values=%s", fps, readbacks)
 
         try:
             self._actual_fps = float(readbacks.get("AcquisitionFrameRate"))
@@ -521,14 +521,14 @@ def _configure_converter(self) -> None:
 
         if self._should_output_mono():
             self._converter.OutputPixelFormat = pylon.PixelType_Mono8
-            LOG.info(
+            LOG.debug(
                 "[Basler] Converter configured for Mono8 output (camera PixelFormat=%s preserve_mono=%s)",
                 camera_pixel_format,
                 self._preserve_mono,
             )
         else:
             self._converter.OutputPixelFormat = pylon.PixelType_BGR8packed
-            LOG.info(
+            LOG.debug(
                 "[Basler] Converter configured for BGR8 output (camera PixelFormat=%s preserve_mono=%s)",
                 camera_pixel_format,
                 self._preserve_mono,
@@ -559,7 +559,7 @@ def open(self) -> None:
                     self._camera.ExposureTime.SetValue(float(self.settings.exposure))
                 if hasattr(self._camera, "ExposureTimeAbs"):
                     self._camera.ExposureTimeAbs.SetValue(float(self.settings.exposure))
-                LOG.info("[Basler] Exposure set to %s us (auto off)", self.settings.exposure)
+                LOG.debug("[Basler] Exposure set to %s us (auto off)", self.settings.exposure)
             except Exception as exc:
                 LOG.warning("[Basler] Failed to set exposure: %s", exc)
 
@@ -569,7 +569,7 @@ def open(self) -> None:
                 if hasattr(self._camera, "GainAuto"):
                     self._camera.GainAuto.SetValue("Off")
                 self._camera.Gain.SetValue(float(self.settings.gain))
-                LOG.info("[Basler] Gain set to %s dB (auto off)", self.settings.gain)
+                LOG.debug("[Basler] Gain set to %s dB (auto off)", self.settings.gain)
             except Exception as exc:
                 LOG.warning("[Basler] Failed to set gain: %s", exc)
 
@@ -649,15 +649,15 @@ def open(self) -> None:
                 # pylon.GrabStrategy_LatestImageOnly,
                 pylon.GrabStrategy_OneByOne,
             )
-            LOG.info(
+            LOG.debug(
                 "[Basler] grabbing=%s max_buffers=%s",
                 self._camera.IsGrabbing(),
                 self._camera.MaxNumBuffer.GetValue() if hasattr(self._camera, "MaxNumBuffer") else "N/A",
             )
         else:
             LOG.debug("Fast-start probe: skipping StartGrabbing and converter")
 
-        LOG.info(
+        LOG.debug(
             "[Basler] open device_id=%s index=%s fast_start=%s requested=(%sx%s @ %s fps exp=%s gain=%s)",
             getattr(self, "_device_id", None),
             getattr(self.settings, "index", None),
@@ -767,7 +767,7 @@ def read(self) -> CapturedFrame:
 
             if not self._logged_first_frame:
                 self._logged_first_frame = True
-                LOG.info(
+                LOG.debug(
                     "[Basler] first frame device_id=%s shape=%s dtype=%s nbytes=%.2f MB "
                     "camera_pixel_format=%s output_format=%s preserve_mono=%s",
                     self._device_id,
@@ -814,7 +814,7 @@ def read(self) -> CapturedFrame:
             raise RuntimeError("Failed to retrieve image from Basler camera.") from exc
 
     def close(self) -> None:
-        LOG.info(
+        LOG.debug(
             "[Basler] close called camera_exists=%s grabbing=%s open=%s",
             self._camera is not None,
             bool(self._camera and self._camera.IsGrabbing()),
@@ -1176,7 +1176,7 @@ def _configure_trigger_input(self, cfg, *, strict: bool = False) -> None:
             self._trigger = CameraTriggerSettings()
             return
 
-        LOG.info(
+        LOG.debug(
             "Basler trigger input configured: role=%s selector=%s source=%s activation=%s "
             "selector_ok=%s source_ok=%s activation_ok=%s",
             role,
@@ -1241,7 +1241,7 @@ def _configure_trigger_master(self, cfg, *, strict: bool = False) -> None:
         source_ok = self._set_enum_feature("LineSource", output_source, strict=strict)
 
         if mode_ok and source_ok:
-            LOG.info(
+            LOG.debug(
                 "Basler trigger master configured via Line*: output_line=%s output_source=%s",
                 output_line,
                 output_source,

dlclivegui/cameras/backends/gentl_backend.py

@@ -90,6 +90,8 @@ def __init__(self, settings):
             ns = {}
 
         self._fast_start: bool = bool(ns.get("fast_start", False))
+        self._preserve_mono: bool = bool(getattr(settings, "preserve_mono", False) or ns.get("preserve_mono", False))
+        self._logged_first_frame: bool = False
 
         raw_device_id = ns.get("device_id") or props.get("device_id")
         legacy_serial = ns.get("serial_number") or ns.get("serial") or props.get("serial_number") or props.get("serial")
@@ -177,10 +179,20 @@ def actual_pixel_format(self) -> str | None:
         """Camera/native pixel format selected on the GenICam PixelFormat node."""
         return self._camera_pixel_format or (self._pixel_format if self._pixel_format != "auto" else None)
 
+    @property
+    def recommended_preserve_mono(self) -> bool | None:
+        if not self._camera_pixel_format:
+            return None
+        return self._is_camera_mono()
+
     @property
     def actual_output_format(self) -> str | None:
-        """Current GenTL backend emits OpenCV-native BGR uint8 frames."""
-        return self._actual_output_format or "BGR8"
+        """Backend output frame format emitted to the app, e.g. 'Mono8' or 'BGR8'."""
+        if self._actual_output_format:
+            return self._actual_output_format
+        if not self._camera_pixel_format:
+            return None
+        return "Mono8" if self._should_output_mono() else "BGR8"
 
     @classmethod
     def is_available(cls) -> bool:
@@ -196,6 +208,7 @@ def static_capabilities(cls) -> dict[str, SupportLevel]:
             "device_discovery": SupportLevel.SUPPORTED,
             "stable_identity": SupportLevel.SUPPORTED,
             "hardware_trigger": SupportLevel.BEST_EFFORT,
+            "preserve_mono": SupportLevel.SUPPORTED,
         }
 
     def _debug_trigger_nodes(self, node_map, *, context: str = "") -> None:
@@ -606,6 +619,13 @@ def waits_for_hardware_trigger(self) -> bool:
         role = str(self._trigger_attr(getattr(self, "_trigger", None), "role", "off") or "off").lower()
         return role in {"external", "follower"}
 
+    def _is_camera_mono(self) -> bool:
+        fmt = str(self._camera_pixel_format or self._pixel_format or "").strip()
+        return fmt.startswith("Mono")
+
+    def _should_output_mono(self) -> bool:
+        return bool(self._preserve_mono and self._is_camera_mono())
+
     @staticmethod
     def _output_format_for_frame(frame: np.ndarray) -> str:
         if frame.ndim == 2:
@@ -660,6 +680,25 @@ def read(self) -> CapturedFrame:
             except Exception:
                 pass
         self._actual_output_format = self._output_format_for_frame(frame)
+        try:
+            ns = self._ensure_settings_ns()
+            ns["actual_output_format"] = self._actual_output_format
+            ns["preserve_mono"] = self._preserve_mono
+        except Exception:
+            pass
+        if not self._logged_first_frame:
+            self._logged_first_frame = True
+            LOG.info(
+                "[GenTL] first frame device_id=%s shape=%s dtype=%s nbytes=%.2f MB "
+                "camera_pixel_format=%s output_format=%s preserve_mono=%s",
+                self._device_id,
+                frame.shape,
+                frame.dtype,
+                frame.nbytes / (1024 * 1024),
+                self._camera_pixel_format,
+                self.actual_output_format,
+                self._preserve_mono,
+            )
 
         return CapturedFrame(
             frame=frame,
@@ -1286,7 +1325,7 @@ def _resolve_trigger_source(self, node_map, requested: str, *, strict: bool) ->
         if requested.lower() == "auto":
             for candidate in ("Line0", "Line1", "Line2", "Any"):
                 if candidate in available:
-                    LOG.info(
+                    LOG.debug(
                         "GenTL TriggerSource auto-selected '%s'. Available: %s",
                         candidate,
                         available,
@@ -1374,6 +1413,14 @@ def _configure_pixel_format(self, node_map) -> None:
             pixel_format_node.value = selected
             self._pixel_format = str(pixel_format_node.value)
             self._camera_pixel_format = self._pixel_format
+            try:
+                ns = self._ensure_settings_ns()
+                ns["actual_pixel_format"] = self._camera_pixel_format
+                ns["detected_pixel_format"] = self._camera_pixel_format
+                ns["actual_output_format"] = self.actual_output_format
+                ns["preserve_mono"] = self._preserve_mono
+            except Exception:
+                pass
 
             LOG.debug("GenTL pixel format selected: %s", self._pixel_format)
 
@@ -1475,7 +1522,7 @@ def _configure_trigger_input(self, node_map, cfg, *, strict: bool = False) -> No
             self._trigger = CameraTriggerSettings()
             return
 
-        LOG.info(
+        LOG.debug(
             "GenTL trigger input configured: role=%s selector=%s source_requested=%s "
             "source=%s activation=%s selector_ok=%s source_ok=%s activation_ok=%s",
             role,
@@ -1536,7 +1583,7 @@ def _configure_trigger_master(self, node_map, cfg, *, strict: bool = False) -> N
                     node = self._node(node_map, "StrobeDuration")
                     if node is not None:
                         node.value = int(strobe_duration)
-                        LOG.info("Configured GenTL StrobeDuration=%s", int(strobe_duration))
+                        LOG.debug("Configured GenTL StrobeDuration=%s", int(strobe_duration))
                 except Exception as exc:
                     if strict:
                         raise RuntimeError(f"Failed to set StrobeDuration={strobe_duration}: {exc}") from exc
@@ -1547,7 +1594,7 @@ def _configure_trigger_master(self, node_map, cfg, *, strict: bool = False) -> N
                     node = self._node(node_map, "StrobeDelay")
                     if node is not None:
                         node.value = int(strobe_delay)
-                        LOG.info("Configured GenTL StrobeDelay=%s", int(strobe_delay))
+                        LOG.debug("Configured GenTL StrobeDelay=%s", int(strobe_delay))
                 except Exception as exc:
                     if strict:
                         raise RuntimeError(f"Failed to set StrobeDelay={strobe_delay}: {exc}") from exc
@@ -1561,7 +1608,7 @@ def _configure_trigger_master(self, node_map, cfg, *, strict: bool = False) -> N
             )
 
             if enable_ok:
-                LOG.info(
+                LOG.debug(
                     "GenTL trigger master configured via Strobe*: "
                     "StrobeEnable=On StrobePolarity=%s polarity_ok=%s "
                     "StrobeOperation=%s operation_ok=%s",
@@ -1601,7 +1648,7 @@ def _configure_trigger_master(self, node_map, cfg, *, strict: bool = False) -> N
                 source_ok = self._set_enum_node(node_map, "LineSource", output_source, strict=strict)
 
                 if mode_ok and source_ok:
-                    LOG.info(
+                    LOG.debug(
                         "GenTL trigger master configured via Line*: output_line=%s output_source=%s",
                         output_line,
                         output_source,
@@ -1720,15 +1767,15 @@ def _configure_frame_rate(self, node_map) -> None:
             return
 
         target = float(self.settings.fps)
-        LOG.info("Configuring GenTL frame rate: requested %.3f FPS", target)
+        LOG.debug("Configuring GenTL frame rate: requested %.3f FPS", target)
 
         for attr in ("AcquisitionFrameRateEnable", "AcquisitionFrameRateControlEnable"):
             try:
                 node = getattr(node_map, attr)
                 before = getattr(node, "value", None)
                 node.value = True
                 after = getattr(node, "value", None)
-                LOG.info("Enabled GenTL %s: before=%r after=%r", attr, before, after)
+                LOG.debug("Enabled GenTL %s: before=%r after=%r", attr, before, after)
                 break
             except Exception:
                 pass
@@ -1740,7 +1787,7 @@ def _configure_frame_rate(self, node_map) -> None:
                 node.value = target
                 after = getattr(node, "value", None)
 
-                LOG.info(
+                LOG.debug(
                     "Set GenTL %s: before=%r requested=%.3f after=%r",
                     attr,
                     before,
@@ -1879,6 +1926,9 @@ def _convert_frame(self, frame: np.ndarray) -> np.ndarray:
                 frame = cv2.cvtColor(frame, cv2.COLOR_BayerGR2BGR)
             elif fmt == "BayerBG8":
                 frame = cv2.cvtColor(frame, cv2.COLOR_BayerBG2BGR)
+            elif self._should_output_mono():
+                # Keep Mono* cameras as 2D uint8 frames when explicitly requested.
+                pass
             else:
                 frame = cv2.cvtColor(frame, cv2.COLOR_GRAY2BGR)
 

dlclivegui/config.py

@@ -20,13 +20,17 @@
 # Global settings
 ## GUI
 GUI_MAX_DISPLAY_FPS: float = 30.0
+## Recording
+ALLOWED_VIDEO_CONTAINERS: set[str] = {"mp4", "avi", "mov"}
+DEFAULT_RECORDING_CONTAINER: str = "mp4"
 
 
 ## Debug
 ### Timing logs
 SINGLE_CAMERA_WORKER_DO_LOG_TIMING: bool = False
 MULTI_CAMERA_WORKER_DO_LOG_TIMING: bool = False
 REC_DO_LOG_TIMING: bool = False
+DLC_DO_LOG_TIMING: bool = True
 # MAIN_WINDOW_DO_LOG_TIMING: bool = False
 #### Backends
 BASLER_DO_LOG_TIMING: bool = False
@@ -512,7 +516,7 @@ class RecordingSettings(BaseModel):
     enabled: bool = False
     directory: str = Field(default_factory=lambda: str(Path.home() / "Videos" / "deeplabcut-live"))
     filename: str = "session.mp4"
-    container: Literal["mp4", "avi", "mov"] = "mp4"
+    container: Literal["mp4", "avi", "mov"] = DEFAULT_RECORDING_CONTAINER
     codec: str = "libx264"
     crf: int = Field(default=23, ge=0, le=51)
     fast_encoding: bool = False
@@ -554,7 +558,7 @@ def writegear_options(self, fps: float | None) -> dict[str, Any]:
         crf_value = int(self.crf) if self.crf is not None else 23
 
         opts: dict[str, Any] = {
-            "-input_framerate": f"{fps_value:.6f}",
+            "-input_framerate": float(fps_value),
             "-vcodec": codec_value,
             "-crf": str(crf_value),
         }

dlclivegui/gui/camera_config/preview.py

@@ -7,6 +7,7 @@
 
 from PySide6.QtCore import QTimer
 
+from ...services.camera_controller import SingleCameraWorker
 from ...services.multi_camera_controller import MultiCameraController
 
 if TYPE_CHECKING:
@@ -56,7 +57,7 @@ class PreviewSession:
 
 
 def apply_rotation(frame, rotation):
-    return MultiCameraController.apply_rotation(frame, rotation)
+    return SingleCameraWorker.apply_rotation(frame, rotation)
 
 
 def apply_crop(frame, x0, y0, x1, y1):
@@ -66,7 +67,7 @@ def apply_crop(frame, x0, y0, x1, y1):
     x1 = max(x0, min(x1, w))
     y1 = max(y0, min(y1, h))
 
-    return MultiCameraController.apply_crop(frame, (x0, y0, x1, y1))
+    return SingleCameraWorker.apply_crop(frame, (x0, y0, x1, y1))
 
 
 def resize_to_fit(frame, max_w=400, max_h=300):