dave/py-media-grader
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Enhance VideoEditor with previous and next frame tracking point visualization

Browse Source 
This commit adds functionality to the VideoEditor class to render tracking points from the previous and next frames with 50% alpha blending. Red circles indicate previous frame points, while green circles represent next frame points, improving the visual feedback during video editing. Additionally, the feedback message duration has been reduced for a more responsive user experience.
This commit is contained in:
PhatPhuckDave
2025-09-17 10:39:55 +02:00
parent e80278a2dd
commit 47ec7fed04
2 changed files with 31 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
croppa/main.py
View File

@@ -7,10 +7,10 @@ from pathlib import Path
from typing import List
import time
import re
import json
import threading
import queue
import json
import subprocess
import queue
import ctypes
class Cv2BufferedCap:
@@ -581,7 +581,7 @@ class VideoEditor:
# Feedback message state
self.feedback_message = ""
self.feedback_message_time = None
self.feedback_message_duration = 0.5 # seconds to show message
self.feedback_message_duration = 0.2 # seconds to show message
# Crop adjustment settings
self.crop_size_step = self.CROP_SIZE_STEP
@@ -1997,8 +1997,32 @@ class VideoEditor:
pts = self.tracking_points.get(self.current_frame, []) if not self.is_image_mode else []
for (rx, ry) in pts:
sx, sy = self._map_rotated_to_screen(rx, ry)
cv2.circle(canvas, (sx, sy), 6, (0, 255, 0), -1)
cv2.circle(canvas, (sx, sy), 6, (255, 0, 0), -1)
cv2.circle(canvas, (sx, sy), 6, (255, 255, 255), 1)
# Draw previous and next frame tracking points with 50% alpha
if not self.is_image_mode and self.tracking_points:
# Previous frame tracking points (red)
prev_frame = self.current_frame - 1
if prev_frame in self.tracking_points:
prev_pts = self.tracking_points[prev_frame]
for (rx, ry) in prev_pts:
sx, sy = self._map_rotated_to_screen(rx, ry)
# Create overlay for alpha blending
overlay = canvas.copy()
cv2.circle(overlay, (sx, sy), 4, (0, 0, 255), -1) # Red circle
cv2.addWeighted(overlay, 0.5, canvas, 0.5, 0, canvas)
# Next frame tracking points (green)
next_frame = self.current_frame + 1
if next_frame in self.tracking_points:
next_pts = self.tracking_points[next_frame]
for (rx, ry) in next_pts:
sx, sy = self._map_rotated_to_screen(rx, ry)
# Create overlay for alpha blending
overlay = canvas.copy()
cv2.circle(overlay, (sx, sy), 4, (0, 255, 0), -1) # Green circle
cv2.addWeighted(overlay, 0.5, canvas, 0.5, 0, canvas)
if self.tracking_enabled and not self.is_image_mode:
interp = self._get_interpolated_tracking_position(self.current_frame)
if interp:
@@ -2089,12 +2113,12 @@ class VideoEditor:
del self.tracking_points[self.current_frame][idx]
if not self.tracking_points[self.current_frame]:
del self.tracking_points[self.current_frame]
self.show_feedback_message("Tracking point removed")
# self.show_feedback_message("Tracking point removed")
removed = True
break
if not removed:
self.tracking_points.setdefault(self.current_frame, []).append((int(rx), int(ry)))
self.show_feedback_message("Tracking point added")
# self.show_feedback_message("Tracking point added")
self.clear_transformation_cache()
self.save_state()

1
croppa/spec.md
View File

@@ -55,6 +55,7 @@ That coordinate is to be mapped to the bottom left corner of the original raw un
- **Blue cross**: Shows computed tracking position
- **Automatic interpolation**: Tracks between keyframes
- **Crop follows**: Crop area centers on tracked object
- **Display** Points are rendered as blue dots per frame, in addition dots are rendered on each frame for each dot on the previous (in red) and next (in green) frame
### Markers and Looping
- **1**: Set cut start marker at current frame