MrDevBot/pretranscode
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Simplify conversion to one fail-safe H.264 profile

Browse Source
This commit is contained in:
SpiderFish
2026-08-26 11:33:22 +10:00
parent b9b31abf2e
commit 58c6e3ce40
2 changed files with 15 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files
README.md
+5 -5
View File
@@ -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
at 15 Mbps. Existing audio, subtitles, chapters, and Matroska attachments are
preserved when the container supports them. Ten-bit SDR is converted with
error-diffusion dithering; HDR10, HLG, and Dolby Vision-labelled sources are
tone-mapped to BT.709 SDR before encoding.
Cached video is H.264 High Profile, 8-bit `yuv420p`, CRF 18, capped at 15 Mbps.
Resolution and frame rate are preserved. Existing audio, subtitles, chapters,
and Matroska attachments are copied. Ten-bit SDR is converted with
error-diffusion dithering; sources carrying explicit HDR10 or HLG transfer
metadata are tone-mapped to BT.709 SDR.
The fixed source blacklist is:
pretranscode.py
+10 -15
View File
@@ -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"):
old["item_id"] = catalog[relative]["item_id"]
if relative in catalog:
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):
transfer = (info.get("color_transfer") or "").lower()
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 is_hdr(self, info):
return (info.get("color_transfer") or "").lower() in {"smpte2084", "arib-std-b67"}
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: