[Feature] Optionally keep Only Longest Video Option for Sliding Window Generation

[Gunther-Schulz]

All code and this PR description was generated by AI.

🚀 Overview

This PR introduces a new "Keep only longest video" feature for sliding window generation.

✨ New Features

Keep Only Longest Video Option

• Space-Saving Feature: New GUI checkbox to enable keeping only the longest generated video during sliding window generation
• Automatic Cleanup: Intelligently deletes previous shorter videos before saving new longer ones
• Backward Compatible: Feature is disabled by default to maintain existing workflows
• Abort-Safe: If generation is interrupted, users retain the longest video generated so far
• Clean Output Management: Keeps output folders organized during extended generation sessions

Enhanced Sliding Window Pipeline

• Integrated Parameter: New sliding_window_keep_only_longest parameter in generate_video function
• UI Integration: Seamless checkbox control in the web interface
• Smart File Management: Automatic detection and removal of shorter video files
• Progress Preservation: Maintains generation progress while optimizing storage

🔧 Technical Implementation

Core Changes

• GUI Controls: Added checkbox in sliding window section for user control
• Parameter Pipeline: Integrated new parameter through entire video generation pipeline
• File Management Logic: Implemented intelligent video cleanup system
• State Management: Proper handling of file lists and UI state

File System Integration

• Smart Deletion: Only removes files when new longer videos are successfully created
• Path Management: Robust file path handling for cleanup operations
• Safety Checks: Prevents accidental deletion of important files

🎯 Use Cases

Clean Workflows

• Organized Outputs: Maintains tidy output directories
• Easy Management: Reduces need for manual file cleanup
• Professional Results: Delivers clean, organized final outputs

📋 Technical Details

New Parameters

• sliding_window_keep_only_longest - Boolean flag for enabling cleanup mode
• Integrated into UI pipeline and generation functions
• Default: False (maintains backward compatibility)

File Management Logic

• Detects existing video files in output directory
• Compares file sizes/lengths to determine "longest"
• Safely removes shorter videos before saving new ones
• Updates UI file lists to maintain consistency

Error Handling

• Robust file operation error handling
• Safe cleanup operations with rollback capability
• Graceful handling of interrupted generations

🔗 Files Changed

• wgp.py - Main implementation of keep longest feature, UI fixes, and settings fix
• .gitignore - Updated patterns for better repository management

[Tophness]

Wait, it didn't already work that way?
That was one of the things I hated about framepack. There were a ton of redundant temp files littered in the output folder as it was building the final video, and it kept them there when it was done.

[Gunther-Schulz]

Wait, it didn't already work that way? That was one of the things I hated about framepack. There were a ton of redundant temp files littered in the output folder as it was building the final video, and it kept them there when it was done.

Recent version of framepack actually have that option now.

[deepbeepmeep]

Shouldnt this feature be a general switch in the Config Tab rather than a per model switch ?

[Tophness]

Shouldnt this feature be a general switch in the Config Tab rather than a per model switch ?

Yea that makes more sense imo

[Gunther-Schulz]

Shouldnt this feature be a general switch in the Config Tab rather than a per model switch ?

Agreed, should it go in the "General" config tab?

[Gunther-Schulz]

refactor done. moved the config location and moved the application logic to another file. ready to merge

[deepbeepmeep]

thx, but I think this could be made much simpler:
In generate_video():
with lock:
if window_no > 1 and keep_only_last_file:
old_file = file_list[-1]
file_list[-1]= path
file_settings_list[-1]=(configs if no > 0 else configs.copy())
os.path.remove(old_file)
else:
file_list.append(path)
file_settings_list.append(configs if no > 0 else configs.copy())