Both were offered for import but could never be imported.
`.y4m` is in VIDEO_EXTENSIONS (and file-format-parity.md lists Y4M as
read), but nothing read it. `codecs::y4m` is a YUV4MPEG2 source written
from the format's public documentation (yuv4mpeg(5)): the W/H/F/A/I/C/X
stream header, FRAME lines with their own parameters, 8-bit 4:2:0 / 4:2:2
/ 4:4:4 / 4:4:4 + alpha / mono and 9–16-bit little-endian
(`420p10`, `422p12`, `mono16`, …) as Yuv8 / Yuv16 frames, XCOLORRANGE=FULL
and the pixel aspect. Frames are indexed once from their header lines and
read on demand (a reader opener too), so large files aren't loaded whole.
Sizes, rates and offsets are checked; 4:1:1 and unknown colour spaces are
an "unsupported" error.
The Media Browser listed `.ale` among project files, but FilmCraft only
writes ALE (File ▸ Export; Premiere doesn't import it either, per
file-format-parity.md), so importing one always failed. It is no longer
listed.
Tests: hand-built Y4M files (4:2:0 frame by frame, 10-bit 4:2:2 with frame
parameters, aspect and full range, mono, the reader path), truncated /
bit-flipped / hostile headers under catch_unwind, and an ffmpeg oracle
(8-bit 4:2:0 and 10-bit 4:2:2 files equal ffmpeg's rawvideo output byte
for byte); the browser no longer classifies `.ale`.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
TIFFs stored as YCbCr (PhotometricInterpretation 6) without JPEG
compression failed with "does not support the color type Unknown(24)":
the image crate reads YCbCr only inside JPEG compression. ffmpeg writes
these whenever the source is YUV, so an ordinary frame grab
(`ffmpeg -i clip.mp4 -frames:v 1 grab.tiff`) couldn't be imported.
`still::ycbcr_tiff` decodes them from TIFF 6.0 (§21 YCbCr images, §20
ReferenceBlackWhite, §9 PackBits), reading the directory with
filmcraft-dng's TIFF parser: 8-bit chunky data units with subsampling 1, 2
or 4 each way (the image padded to whole data units), converted with the
file's YCbCrCoefficients and ReferenceBlackWhite (or the §21 defaults).
Every size, offset and count is checked, the picture is capped at 2^28
pixels, and separate planes, tiles and other bit depths are an
"unsupported" error. JPEG-compressed and RGB TIFFs still go to the image
crate.
Tests: hand-built files for data-unit placement (4:2:0), video-range
reference levels with PackBits (4:4:4), sizes that aren't whole data
units, and truncated/bit-flipped/hostile files under catch_unwind; an
ffmpeg oracle compares ffmpeg-written 4:2:0, 4:2:2 and 4:4:4 TIFFs (95×63)
with ffmpeg's own RGB decode (every channel within 6).
Co-Authored-By: Claude Opus 5.5 <[email protected]>
File ▸ Import and the Media Browser offer `.aac` (it is in AUDIO_EXTENSIONS),
and Export ▸ AAC Audio writes ADTS `.aac` (#814), but no opener read them:
`audio::opener` only accepted mp3/mp2/flac/ogg/aif by extension, so every
`.aac` failed with "unrecognised format".
`AudioFileSource` now decodes a standalone ADTS stream with our AAC decoder
(ISO/IEC 13818-7 §6.2): frame after frame from the first header (after an
ID3v2 tag), resyncing past damage, skipping frames with another
configuration, keeping a frame that doesn't decode as silence, and
upsampling HE-AAC to its output rate. Decoding stops with an error past
4 GiB of samples instead of allocating without bound.
Tests encode a stereo tone with our encoder's ADTS output and import it
(rate, channels, duration, level), and run truncated, bit-flipped and
bad-length streams under catch_unwind.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
The desktop entry declared no MimeType and the shared-mime-info file was an
empty stub, so no file manager listed FilmCraft under "Open With" for any
file, and a double-clicked .fcproj had no type to open with. The app already
handles both from the command line (`%F`): a project opens, media is
imported (#850).
- mime.xml: define application/x-filmcraft for *.fcproj, a JSON subclass
with the app icon; the same name the macOS UTI declares in Info.plist.in.
- Desktop entry: MimeType lists the project type and the video containers
FilmCraft imports (MP4/M4V, QuickTime, Matroska, WebM, AVI, MXF,
MPEG-TS, MPEG-PS, 3GP). Audio and stills are left out so an NLE doesn't
crowd every image and song's Open With list.
- AppStream: the metainfo <provides> the project type.
- Flatpak bundle: the comment no longer says the MIME file has no types.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
