feat: improve library and audiobook workflow

server/audiobook/cmp/fix_longform_encode.py

@@ -0,0 +1,35 @@
+"""Apply the duration-aware export fix to the installed VoiceStudio router."""
+from pathlib import Path
+import sys
+
+path = Path(sys.argv[1])
+source = path.read_text(encoding='utf-8')
+old = '''        await run_ffmpeg(
+            build_render_cmd('''
+new = '''        # Long audiobooks can take hours to encode on the CMP CPU.
+        # Keep a bounded timeout proportional to the prepared audio duration.
+        encode_timeout = min(21600.0, max(1800.0,
+            sum(d for _, d in chapters_meta) / 1000.0 * 0.5))
+        returncode, _, encode_error = await run_ffmpeg(
+            build_render_cmd('''
+tail = '''            job_id=job_id,
+        )
+
+        if job_store is not None:'''
+replacement = '''            job_id=job_id, timeout=encode_timeout,
+        )
+        if returncode != 0:
+            logger.error("[%s] ffmpeg export failed: %s", job_id,
+                         (encode_error or b"").decode(errors="replace")[-2000:])
+            raise RuntimeError("Audio export failed")
+
+        if job_store is not None:'''
+if 'encode_timeout = min(21600.0' not in source:
+    assert source.count(old) == 1
+    assert source.count(tail) == 1
+    backup = path.with_suffix('.py.before-duration-timeout')
+    if not backup.exists():
+        backup.write_text(source, encoding='utf-8')
+    source = source.replace(old, new).replace(tail, replacement)
+    compile(source, str(path), 'exec')
+    path.write_text(source, encoding='utf-8')