fix(sentiment): frequent "face not detected" results #4
Description
We often get a "no faces detected" response from the backend, even when the video clearly shows a face.
Logs from sentiment-analysis-api
2026-01-27 14:26:14.114 BRT
2026-01-27 17:26:14 - services.emotion_analysis.emotion_analysis_imp - INFO - Total frames in video: 476
2026-01-27 14:26:14.114 BRT
2026-01-27 17:26:14 - services.emotion_analysis.emotion_analysis_imp - INFO - Frames actually processed: 0
2026-01-27 14:26:14.114 BRT
2026-01-27 17:26:14 - services.emotion_analysis.emotion_analysis_imp - INFO - Total faces detected: 0
2026-01-27 14:26:14.114 BRT
2026-01-27 17:26:14 - services.emotion_analysis.emotion_analysis_imp - WARNING - No faces detected or no predictions made.
2026-01-27 14:26:14.114 BRT
2026-01-27 17:26:14 - services.emotion_analysis.emotion_analysis_imp - INFO - Percentages of emotions detected: {'Angry': 0, 'Disgusted': 0, 'Fearful': 0, 'Happy': 0, 'Neutral': 0, 'Sad': 0, 'Surprised': 0}
2026-01-27 14:26:14.115 BRT
2026-01-27 17:26:14 - routes.video_routes - INFO - Emotion analysis result: Angry=0.0 Disgusted=0.0 Fearful=0.0 Happy=0.0 Neutral=0.0 Sad=0.0 Surprised=0.0
2026-01-27 14:26:14.115 BRT
2026-01-27 17:26:14 - routes.video_routes - INFO - Time taken for analysis: 1.2495639324188232 seconds