In MPC-BE/HC options, select "Player" → "Web Interface"
Check "Listen on port"
Verify port number is set to 13579
Usage
Creator Creating and Adding Chapters
Add chapters at any position while playing video in MPC-BE/HC. The original MP4 file is not modified; a new file (with _with_chapters suffix) is created.
Step 1: Open video file in MPC-BE/HC
Step 2: Pause video at the position where you want to add a chapter
Step 3: Click "Add Chapter at Current Time" button in the tool
Current playback position is automatically retrieved from MPC-BE/HC
Dialog box appears for entering chapter name
Enter chapter name and click "OK"
Step 4: Repeat steps 2-3 to add all needed chapters
Step 5: Click "Save to Text File" button to save chapter list to a text file
Step 6: Click "Embed Chapters into MP4" button
Select original MP4 file
Select text file saved in step 5
After processing, a new MP4 file with chapters is created
💡 Tip: Chapter list is editable. Use "Clear List" to remove all items, or "Remove Selected" to remove only selected items.
Extractor Extracting Chapters
Extract chapter information embedded in MP4 files as text files. Extracted text files can be edited and re-embedded into MP4.
Supported Format: Can extract QuickTime Chapter Track format chapters (standard format used by major tools like iTunes, HandBrake, FFmpeg).
Step 1: Click "Select MP4 File and Extract Chapters" button
Step 2: Select MP4 file to extract chapters from
If file has no chapters, a message will appear
Step 3: After processing, chapter information is saved as a text file
A file named _chapters.txt is created in the same location as the original MP4 file
Example: video.mp4 → video_chapters.txt
Remover Removing Chapters
Completely remove chapter information from MP4 files. The original MP4 file is not modified; a new file (with _no_chapters suffix) is created.
Supported Formats: Can remove all chapter information regardless of format.
Step 1: Click "Select MP4 File and Remove Chapters" button
Step 2: Select MP4 file to remove chapters from
If file has no chapters, a message will appear
Step 3: After processing, a file without chapters will be created
Original file: video.mp4 (unchanged, with chapters)
New file: video_no_chapters.mp4 (without chapters)
Notes
Processing MP4 files may take time. Do not operate while "Processing..." is displayed
Processing large files requires sufficient disk space (at least twice the file size recommended)
Troubleshooting
"Cannot connect to MPC-BE" Error
Verify MPC-BE/HC is running
Verify MPC-BE/HC Web Interface is enabled
Verify port number is set to 13579
Verify firewall is not blocking port 13579
"MP4Box failed" Error
Verify MP4Box is properly installed (see "Verification" in Requirements section above)
Verify MP4 file is not corrupted
Verify file path does not contain special characters
Cannot Extract Chapters
Verify MP4 file contains chapter information
File may use unsupported chapter format
Supported: QuickTime Chapter Track (standard format readable by MP4Box)
Not supported: Some legacy proprietary formats like Nero Chapter
QuickTime Chapter Track is the most common format used by major tools like iTunes, HandBrake, and FFmpeg
Check if chapters are visible in other tools (e.g., VLC)
File Formats
Chapter Text File (.txt) - Tool's Simple Format
Text file format used by Creator and Extractor tabs:
This tool automatically converts between three formats:
1. Tool's Simple Format (User-facing) 00:00:00.000 Start
Human-readable and writable format
Used by Creator and Extractor
2. OGM Format (MP4Box Input)
CHAPTER01=00:00:00.000
CHAPTER01NAME=Start
Format required by MP4Box
Automatically converted by tool (no user action needed)
3. QuickTime Chapter Track (Inside MP4) chpl atom (binary format)
Binary structure inside MP4 files
Automatically converted by MP4Box (no user action needed)
💡 Important: Users only handle the tool's simple format. Conversion to OGM format is done by the tool, and conversion to MP4 internal format is done by MP4Box automatically.