Add creative/comfyui v5.1.0 (official bundled) and media/ltx-video-pipeline v2.0.0 (custom LTX pipeline)

2026-07-22 16:17:52 -05:00
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+# Programmatic Workflow JSON Modification
+
+When modifying multiple LTX workflow JSONs with the same changes (sampler, duration, imageFile, prompt), use a Python script rather than manual JSON editing. This avoids quoting errors in shell heredocs and ensures consistent modifications across clips.
+
+## Pattern
+
+1. Write the modification script locally (on Hermes host)
+2. scp it to .202
+3. Run it via SSH
+
+## Example: build_clips.py (2026-07-22)
+
+```python
+import json
+
+# Load templates
+c1 = json.load(open("/tmp/api_cyberpunk_C1.json"))
+c2 = json.load(open("/tmp/api_cyberpunk_C2.json"))
+
+# Common modifications for both clips
+for d, name in [(c1, "C1"), (c2, "C2")]:
+    p = d["prompt"]
+    
+    # Node 20: sampler
+    p["20"]["inputs"]["sampler_name"] = "euler_ancestral_cfg_pp"
+    
+    # Node 131: duration -> 121 frames / 5.04s
+    p["131"]["inputs"]["duration_frames"] = 121
+    p["131"]["inputs"]["end_frame"] = 121
+    p["131"]["inputs"]["duration_seconds"] = 5.04
+    p["131"]["inputs"]["end_second"] = 5.04
+    
+    # Node 131 timeline_data
+    td = json.loads(p["131"]["inputs"]["timeline_data"])
+    td["normalDurationFrames"] = 121
+    seg = td["segments"][0]
+    seg["length"] = 121
+    seg["end"] = 5.04
+
+# C1-specific: boss pan right
+p1 = c1["prompt"]
+td1 = json.loads(p1["131"]["inputs"]["timeline_data"])
+td1["segments"][0]["imageFile"] = "ltx_boss_A.png"
+td1["segments"][0]["prompt"] = "..."  # full prompt
+p1["131"]["inputs"]["timeline_data"] = json.dumps(td1)
+
+# C2-specific: frame-B -> woman reveal
+p2 = c2["prompt"]
+td2 = json.loads(p2["131"]["inputs"]["timeline_data"])
+td2["segments"][0]["imageFile"] = "ltx_boss_B.png"  # CRITICAL: pre-rendered empty frame B
+td2["segments"][0]["prompt"] = "..."  # full prompt
+p2["131"]["inputs"]["timeline_data"] = json.dumps(td2)
+
+# Write both
+json.dump(c1, open("/tmp/api_boss_C1_fixed.json", "w"), indent=2)
+json.dump(c2, open("/tmp/api_boss_C2_fixed.json", "w"), indent=2)
+```
+
+## Why Not Shell Heredocs?
+
+Shell heredocs with Python inside them have quoting issues:
+- Single quotes inside the Python string break the heredoc delimiter
+- Multi-line prompts with special characters get mangled
+- Escaping is fragile and error-prone
+
+The scp + remote execution pattern avoids all of this.
+
+## Dispatch
+
+```bash
+# Write script locally
+write_file /tmp/build_clips.py
+
+# scp to .202 and run
+sshpass -p 'passw0rd' scp /tmp/build_clips.py [email protected]:/tmp/build_clips.py
+sshpass -p 'passw0rd' ssh [email protected] 'python3 /tmp/build_clips.py'
+```