Fix serving a detection if it starts a 0 or at the end of the file

Author: BenCretois

.gitignore

@@ -180,6 +180,3 @@ diagnostics/
 .vscode/
 assets/birddata.zip
 sampling_scripts/
-# pixi environments
-.pixi/*
-!.pixi/config.toml

birdnet_validator/__init__.py

@@ -86,9 +86,8 @@ def run(
         "--server.headless", "true",
     ]
 
-    # Use DEVNULL/PIPE for std handles to avoid "invalid handle" errors
-    # when launched from R/reticulate on Windows (all three handles can be
-    # invalid in an embedded R session).
+    # DEVNULL avoids "invalid handle" errors in environments where
+    # standard handles may not exist (e.g. pythonw.exe, embedded interpreters).
     subprocess.run(
         cmd,
         env=env,

src/s3_utils.py

@@ -1,6 +1,5 @@
 """S3 utilities for reading/writing files from S3 storage."""
 
-import io
 from urllib.parse import urlparse
 
 import boto3

src/selection_handlers.py

@@ -95,8 +95,8 @@ def render_local_data_loader():
         st.sidebar.info(
             "📂 **Paths not configured yet.**\n\n"
             "Please provide your audio, results, and output directories.\n\n"
-            "**Using Python/R?** Pass them to `run()` or `run_validator()`.\n\n"
-            "**Using `.env` file?** Set `BIRDNET_AUDIO_DIR`, `BIRDNET_RESULTS_DIR`, and `BIRDNET_OUTPUT_DIR`.\n\n"
+            "**Using Python?** Pass them to `run()`.\n\n"
+            "**Using `.env` file?** Set `AUDIO_DIR`, `RESULTS_DIR`, and `OUTPUT_DIR`.\n\n"
             "🔄 *After updating paths, restart the app to apply changes.*"
         )
         return False

src/ui_components.py

@@ -138,6 +138,9 @@ def render_spectrogram(file_path, start_time, context_before=1, context_after=4,
 
 def render_audio_player(clip):
     """Render audio player widget."""
+    if clip is None:
+        st.warning("No audio available for this clip")
+        return
     st.audio(clip, format="audio/wav", sample_rate=48000)
 
 

src/utils.py

@@ -96,9 +96,18 @@ def extract_clip(file_path, start_time, context_before=1, context_after=4, sr=48
         else:
             audio_data, _ = librosa.load(file_path, sr=sr, mono=True)
 
-        start_sample = max(0, int((start_time - context_before) * sr))
-        end_sample = int((start_time + context_after) * sr)
-        return audio_data[start_sample:end_sample]
+        duration = len(audio_data) / sr
+        clip_start = max(0.0, start_time - context_before)
+        clip_end = min(duration, start_time + context_after)
+
+        start_sample = int(clip_start * sr)
+        end_sample = int(clip_end * sr)
+
+        clip = audio_data[start_sample:end_sample]
+        if len(clip) < sr // 10:  # less than 0.1s — too short
+            st.warning("Audio clip too short at this position")
+            return None
+        return clip
     except Exception as e:
         st.error(f"Error loading audio file: {e}")
         return None