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drop rawpy, use libraw/dcraw_emu directly;

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rawpy is still supported but will not be bundled by default
due to security concerns

dcraw_emu reads more formats than rawpy + gives better quality
(we told rawpy to use embedded thumbs), so also much slower

dcraw_emu must be combined with libvips or pillow (equivalent)

other alternatives considered:

libvips + a full imagemagick does a different subset of formats,
less than dcraw_emu, yet is 3x slower and eats ram

magick wins wrt formats but is even slower (4x of dcraw_emu)
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ed
2026-05-23 20:55:33 +00:00
parent 2c778e0828
commit 348b4bb5c7
7 changed files with 127 additions and 28 deletions
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README.md
+5 -3
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@@ -302,7 +302,7 @@ also see [comparison to similar software](./docs/versus.md)
* ☑ realtime streaming of growing files (logfiles and such)
* ☑ [thumbnails](#thumbnails)
* ☑ ...of images using Pillow, pyvips, or FFmpeg
* ☑ ...of RAW images using rawpy
* ☑ ...of RAW images using libraw-dcraw_emu or rawpy
* ☑ ...of videos using FFmpeg
* ☑ ...of audio (spectrograms) using FFmpeg
* ☑ cache eviction (max-age; maybe max-size eventually)
@@ -3206,7 +3206,7 @@ enable [thumbnails](#thumbnails) of...
* **HEIF pictures:** `pyvips` or `ffmpeg` or `pillow-heif`
* **AVIF pictures:** `pyvips` or `ffmpeg` or `pillow-avif-plugin` or pillow v11.3+
* **JPEG XL pictures:** `pyvips` or `ffmpeg`
* **RAW images:** `rawpy`, plus one of `pyvips` or `Pillow` (for some formats)
* **RAW photos:** either `libraw dcraw_emu` or `rawpy`, plus either `pyvips` or `Pillow`
enable sending [zeromq messages](#zeromq) from event-hooks: `pyzmq`
@@ -3232,6 +3232,7 @@ set any of the following environment variables to disable its associated optiona
| -------------------- | ------------ |
| `PRTY_NO_ARGON2` | disable argon2-cffi password hashing |
| `PRTY_NO_CFSSL` | never attempt to generate self-signed certificates using [cfssl](https://github.com/cloudflare/cfssl) |
| `PRTY_NO_DCRAW` | disable all [libraw](https://www.libraw.org/homepage)-based thumbnail support for RAW images |
| `PRTY_NO_FFMPEG` | **audio transcoding** goes byebye, **thumbnailing** must be handled by Pillow/libvips |
| `PRTY_NO_FFPROBE` | **audio transcoding** goes byebye, **thumbnailing** must be handled by Pillow/libvips, **metadata-scanning** must be handled by mutagen |
| `PRTY_NO_MAGIC` | do not use [magic](https://pypi.org/project/python-magic/) for filetype detection |
@@ -3246,7 +3247,8 @@ set any of the following environment variables to disable its associated optiona
| `PRTY_NO_PIL_WEBP` | disable use of native webp support in Pillow |
| `PRTY_NO_PSUTIL` | do not use [psutil](https://pypi.org/project/psutil/) for reaping stuck hooks and plugins on Windows |
| `PRTY_NO_PYFTPD` | disable ftp(s) server ([pyftpdlib](https://pypi.org/project/pyftpdlib/)-based) |
| `PRTY_NO_RAW` | disable all [rawpy](https://pypi.org/project/rawpy/)-based thumbnail support for RAW images |
| `PRTY_NO_RAW` | same as `PRTY_NO_DCRAW` plus `PRTY_NO_RAWPY` |
| `PRTY_NO_RAWPY` | disable all [rawpy](https://pypi.org/project/rawpy/)-based thumbnail support for RAW images |
| `PRTY_NO_VIPS` | disable all [libvips](https://pypi.org/project/pyvips/)-based thumbnail support; will fallback to Pillow or ffmpeg |
example: `PRTY_NO_PIL=1 python3 copyparty-sfx.py`