Switch back to an old version of sysinfo, as 0.20 requires 1.54 to compile it, which is too new for MSYS2. Many minor simplifications.
We also switch to structopt for now instead of the beta release of clap, as clap officially recommends to not use the beta yet, and it caused some problems when compiling on Windows or with an older compiler.
Some minor changes:
- The `decow_strings` function has been removed, and we deal with `Cow<str>` properly now.
- The `remove_patterns` function now takes a mutable reference to a `Vec<String>` instead of copying one and modifing it to reduce complexity and overhead.
- The structs used to serialize the VMAF json result have been renamed to `VmafResult`, `Metrics`, and `VmafScore` (they were previously `Foo`, `Bar`, and `Baz`)
- Using an enum instead of a string as the argument to `log_probes` for better type safety and less overhead
- `frame_check_output` now warns if there is a mismatch, and the message has been updated to be more clear that a frame mismatch has occurred
- Several other small changes
The old code used to search for the first match that looked like a frame
count. When ffmpeg emits a warning, it would also emit the frame count at
the point of warning, therefore the previous implementation gave wrong
frame count when it happened.
Fix this by modifying the code to take the last match. Also replace the
index of cap by an explicit one since this is the index of capture group
(which is constant given the regex), not matches.
Selectable with `--split-method av-scenechange-fast`.
The fast method enables downscaling the video before scene detection,
and uses av-scenechange's fast mode, which is similar to pyscenedetect.
This also removes the downscaling from the normal scenecut mode,
since downscaling does affect accuracy of the scene detection.
* ffmpeg: Ensure to map video streams only
Using 0✌️0 could map image files embedded into an mkv if they are
the first entry. 0:V:0 ensures that the first actual video stream
is mapped.
* ffmpeg: Drop subtitles when encoding audio
Formerly, when encoding audio av1an would also convert subtitles
(e.g. SRT would be converted to ASS). We should leave this decision
up to the user and drop subtitles while encoding audio.
* ffmpeg: Do not drop metadata
Formerly, metadata was dropped when encoding audio. This lead to missing
language tags on the audio file and to missing chapter names.
FFmpeg requires a very specific syntax to escape the file path in
Windows when using a filter, so this has been implemented with
conditional compilation. The behavior is the same on Windows, except
that the path is converted to an absolute path. Also, the only usage of
`std::env::current_dir` has been removed, since it was being used as an
ad-hoc way to convert a relative path to an absolute one, which doesn't
work if the temporary directory is in a different directory than the
current one.
We no longer kill the child processes from `process_pipe`,
since calling `wait` or `wait_with_output` closes the stdin handle
anyway.
Also, all usages of `cfg!(windows)` have been changed to `cfg!(target_os
= "windows")` to keep a consistent style.
`DoneJson` is now a concurrent data structure, via `DashMap` and atomics
in the standard library. This should help avoid any potential race
conditions involved with one thread reading `done.json` while another
thread writes to it. Now, we only write to `done.json`, so any failure
from parsing the json while encoding is impossible.
The audio encoding is now done on a separate thread, and it is not
assumed that the audio encoding was finished if the `--resume` flag was
specified, which is now kept track of within `done.json`.
The initialization of the progress bar(s) now does not occur if the
corresponding initialization functions were not called, and the
functions to update the progress bar(s) are a NO-OP if it was not
initialized, rather than implicitly initializing it through the use of
the `Lazy` type from `once_cell`.
Additionally, all 3 concatenation functions now reside in the `concat` module.
Implements more robust logging via flexi_logger. This replaces the old
logging implementation, and is also more ergonomic, since macros from the
`log` crate are now used instead of `format!` directly. Now, warnings
and errors are also logged to stderr, in addition to the log file.
This also removes av1an-pyo3, and integrates the code into av1an-core.
Concatenation with FFmpeg is now handled on Windows differently than
other platforms through conditional compilation. FFmpeg seems to need
double backslashes in the concat file, so this is explicitly handled
in the Windows build now. Also, the spinner is now disabled on Windows
builds since the default command prompt cannot display the characters
correctly.
Previously, we represented quantizer values as an owned `String` for
constructing various encoder commands, which is much slower and less
robust than representing the quantizer as an integral value. This has
been updated to represent the `q` and `n_threads` both as a `usize`, and
only convert to a `String` for formatting as needed.
Furthermore, several struct fields containing paths have been updated to
use a `PathBuf` or `&Path` instead of a `String`. These are the first
steps required to supporting non-UTF8 filenames on Windows and
Unix-based operating systems.
`run_vmaf_on_chunk`'s function signature has been update to take generic
arguments that satisfy `AsRef<Path>`, which allows the caller to save
themselves from creating a new `Path` if the original argument was a
`String`, for example.
* Do not represent the concatenation method as a string
* Fix pedantic clippy warnings
* Remove Cargo.lock from .gitignore
* Fix startup_check for ivf concatenation
* Add doc comment to `Args` for better help generation in Clap
* Use Display impl instead of directly using str::From for `Encoder` and `ConcatMethod`
* Do not unwrap the result of killing child processes
* Assert that VMAF calculation was successful
* Use more idiomatic Rust
