Simplify conversion to one fail-safe H.264 profile

README.md

@@ -54,11 +54,11 @@ the `.env.example` values through Coolify's environment-variable UI.
 
 ## Codec policy
 
-Cached video is H.264 High Profile, Level 4.1, 8-bit `yuv420p`, CRF 18, capped
+Cached video is H.264 High Profile, 8-bit `yuv420p`, CRF 18, capped at 15 Mbps.
-at 15 Mbps. Existing audio, subtitles, chapters, and Matroska attachments are
+Resolution and frame rate are preserved. Existing audio, subtitles, chapters,
-preserved when the container supports them. Ten-bit SDR is converted with
+and Matroska attachments are copied. Ten-bit SDR is converted with
-error-diffusion dithering; HDR10, HLG, and Dolby Vision-labelled sources are
+error-diffusion dithering; sources carrying explicit HDR10 or HLG transfer
-tone-mapped to BT.709 SDR before encoding.
+metadata are tone-mapped to BT.709 SDR.
 
 The fixed source blacklist is:
 

pretranscode.py

@@ -39,7 +39,7 @@ H264_CRF = os.environ.get("H264_CRF", "18")
 H264_PRESET = os.environ.get("H264_PRESET", "medium")
 H264_MAXRATE = os.environ.get("H264_MAXRATE", "15M")
 H264_BUFSIZE = os.environ.get("H264_BUFSIZE", "30M")
-ENCODE_PROFILE = f"h264-high41-8bit-crf{H264_CRF}-{H264_PRESET}-{H264_MAXRATE}-quality-v2"
+ENCODE_PROFILE = f"h264-high-8bit-crf{H264_CRF}-{H264_PRESET}-{H264_MAXRATE}-quality-v3"
 FFMPEG = os.environ.get("FFMPEG", "/usr/bin/ffmpeg")
 FFPROBE = os.environ.get("FFPROBE", "/usr/bin/ffprobe")
 
@@ -389,8 +389,10 @@ class Manager:
                     continue
                 old = inventory.get(relative) or {}
                 if old.get("fingerprint") == current_fingerprint:
-                    if relative in catalog and catalog[relative].get("item_id"):
+                    if relative in catalog:
-                        old["item_id"] = catalog[relative]["item_id"]
+                        for key in ("item_id", "color_transfer", "color_primaries", "color_space"):
+                            if catalog[relative].get(key):
+                                old[key] = catalog[relative][key]
                     continue
                 details = catalog.get(relative)
                 view = VIEW_ROOT / relative
@@ -469,13 +471,8 @@ class Manager:
         profile = (info.get("profile") or "").lower()
         return codec in BLACKLISTED_CODECS or (codec == "h264" and (depth > 8 or "10" in profile))
 
-    def is_hdr(self, info, source):
+    def is_hdr(self, info):
-        transfer = (info.get("color_transfer") or "").lower()
+        return (info.get("color_transfer") or "").lower() in {"smpte2084", "arib-std-b67"}
-        name = source.name.lower()
-        return (
-            transfer in {"smpte2084", "arib-std-b67"}
-            or any(token in name for token in ("hdr10", "hdr.", ".hdr", "dovi", "dolby.vision"))
-        )
 
     def candidate_list(self):
         now = time.time()
@@ -581,15 +578,13 @@ class Manager:
         self.process = None
 
     def ffmpeg_command(self, source, partial, info):
-        hdr = self.is_hdr(info, source)
+        hdr = self.is_hdr(info)
         if hdr:
             transfer = (info.get("color_transfer") or "").lower()
             if transfer == "arib-std-b67":
                 input_colors = "tin=arib-std-b67:pin=bt2020:min=bt2020nc:"
-            elif transfer == "smpte2084":
-                input_colors = ""
             else:
-                input_colors = "tin=smpte2084:pin=bt2020:min=bt2020nc:"
+                input_colors = ""
             video_filter = (
                 f"zscale={input_colors}t=linear:npl=100,format=gbrpf32le,"
                 "zscale=p=bt709,tonemap=tonemap=hable:desat=0,"
@@ -604,7 +599,7 @@ class Manager:
             "-vf", video_filter,
             "-c:v", "libx264", "-preset", H264_PRESET, "-crf", H264_CRF,
             "-maxrate", H264_MAXRATE, "-bufsize", H264_BUFSIZE,
-            "-pix_fmt", "yuv420p", "-profile:v", "high", "-level:v", "4.1",
+            "-pix_fmt", "yuv420p", "-profile:v", "high",
             "-c:a", "copy", "-c:s", "copy",
         ]
         if hdr: