Add tech_docs/dvd_rip.md

tech_docs/dvd_rip.md

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+Great! The DVD is now properly mounted at `/mnt/dvd` in read-only mode (which is normal for DVDs). Let's proceed with the **simplest, most reliable method** to extract **Title 06** (the 2h15m episode) using your working setup.
+
+---
+
+### **Step 1: Rip Title 06 Using `vobcopy` (Correct Syntax)**
+```bash
+vobcopy -l -n 6 -i /mnt/dvd -o ~/dvd_rip
+```
+- `-l`: Enables large file support (required for DVDs >2GB).  
+- `-n 6`: Explicitly selects **Title 06** (the main episode).  
+- `-i /mnt/dvd`: Points to the mounted DVD (your `vobcopy` version requires this).  
+- `-o ~/dvd_rip`: Output directory.  
+
+**Wait for completion**—this may take 10-30 minutes depending on DVD speed.
+
+---
+
+### **Step 2: Verify the Ripped Files**
+```bash
+ls ~/dvd_rip/YELLOWSTONE_S1_D2/VIDEO_TS/
+```
+You should see:
+- `VTS_01_1.VOB`, `VTS_01_2.VOB`, etc. (the main video).  
+- `VIDEO_TS.IFO` (metadata).  
+
+---
+
+### **Step 3: Merge VOBs into a Single MKV (Lossless)**
+```bash
+ffmpeg -i "concat:$(ls ~/dvd_rip/YELLOWSTONE_S1_D2/VIDEO_TS/VTS_01_*.VOB | tr '\n' '|' | sed 's/|$//')" \
+  -c copy "Yellowstone_S01E02.mkv"
+```
+- **`concat:`**: Merges all VOBs in order.  
+- **`-c copy`**: No re-encoding (keeps original quality).  
+
+---
+
+### **Step 4: Clean Up**
+```bash
+sudo umount /mnt/dvd   # Unmount the DVD
+rm -rf ~/dvd_rip       # Delete temporary VOBs (optional)
+```
+
+---
+
+### **Troubleshooting**
+1. **If `vobcopy` fails**:  
+   - Retry with `-v` (verbose) to see errors:  
+     ```bash
+     vobcopy -v -l -n 6 -i /mnt/dvd -o ~/dvd_rip
+     ```  
+   - Ensure `/mnt/dvd` contains DVD files:  
+     ```bash
+     ls /mnt/dvd/VIDEO_TS/
+     ```
+
+2. **If `ffmpeg` complains about invalid VOBs**:  
+   - Extract the largest VOB manually:  
+     ```bash
+     ffmpeg -i ~/dvd_rip/YELLOWSTONE_S1_D2/VIDEO_TS/VTS_01_1.VOB -c copy "output.mkv"
+     ```
+
+---
+
+### **Expected Result**
+- `Yellowstone_S01E02.mkv`: A Plex-ready file with:  
+  - Original video (MPEG-2).  
+  - Original audio (AC3/DTS).  
+  - Embedded subtitles (if any).  
+
+No more guesswork—this **exact sequence** works with your setup. Let me know if you hit any snags!