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Skip --impersonate flag when using bundled yt-dlp

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The bundled PyInstaller binary doesn't include curl_cffi, so passing
--impersonate Chrome-146:Macos-26 makes it error out with
"Impersonate target ... is not available". System yt-dlp installed via
pip can have curl_cffi alongside it and works fine.

Centralize the decision in `Downloader::apply_impersonation` and apply
the same gate to the `/api/preview` handler.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Luna 2026-05-24 23:12:07 -07:00
parent 12c32f642b
commit 26bf619a23
2 changed files with 27 additions and 17 deletions
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36
src/downloader.rs
View file

@ -184,6 +184,17 @@ impl Downloader {
}
}
/// Append `--impersonate Chrome-146:Macos-26` only when the active yt-dlp
/// supports it. The standalone PyInstaller binary we ship as the bundled
/// option doesn't include `curl_cffi`, so passing `--impersonate` to it
/// errors out with `Impersonate target "chrome-146:macos-26" is not
/// available`. System yt-dlp (typically pip-installed with curl_cffi)
/// works fine.
fn apply_impersonation(&self, cmd: &mut Command) {
if self.use_bundled_ytdlp { return; }
cmd.arg("--impersonate").arg("Chrome-146:Macos-26");
}
/// Append the cookie-source flags. Prefers `cookies.txt` in the working
/// directory (set up via the cookies UI), falling back to
/// `--cookies-from-browser <browser>` when no cookies.txt exists and the
@ -333,12 +344,9 @@ impl Downloader {
cmd.arg("--break-on-existing");
}
cmd.arg("--download-archive")
.arg(archive_path.display().to_string())
.arg("--impersonate")
.arg("Chrome-146:Macos-26")
.arg("-o")
.arg(&out_arg)
.arg(&url);
.arg(archive_path.display().to_string());
self.apply_impersonation(&mut cmd);
cmd.arg("-o").arg(&out_arg).arg(&url);
Self::apply_retry_flags(&mut cmd);
self.enqueue(cmd, url, label);
@ -366,12 +374,9 @@ impl Downloader {
.arg("--write-subs")
.arg("--write-auto-subs")
.arg("--extractor-args")
.arg("youtube:player_client=web")
.arg("--impersonate")
.arg("Chrome-146:Macos-26")
.arg("-o")
.arg(&out_arg)
.arg(&url);
.arg("youtube:player_client=web");
self.apply_impersonation(&mut cmd);
cmd.arg("-o").arg(&out_arg).arg(&url);
Self::apply_retry_flags(&mut cmd);
self.enqueue(cmd, url, label);
@ -406,10 +411,9 @@ impl Downloader {
.arg("--embed-metadata")
.arg("--xattrs")
.arg("--extractor-args")
.arg("youtube:player_client=web")
.arg("--impersonate")
.arg("Chrome-146:Macos-26")
.arg("--progress")
.arg("youtube:player_client=web");
self.apply_impersonation(&mut cmd);
cmd.arg("--progress")
.arg("--download-archive")
.arg(archive_path.display().to_string())
.arg("-o")

8
src/web.rs
View file

@ -1255,8 +1255,14 @@ async fn get_preview(
} else if !browser.is_empty() && browser != "none" {
cmd.arg("--cookies-from-browser").arg(&browser);
}
// Only attach --impersonate if the active yt-dlp supports it. Our
// bundled (PyInstaller) binary doesn't ship curl_cffi, so the flag
// would error out. System yt-dlp installed via pip with curl_cffi
// does support it.
if !use_bundled {
cmd.arg("--impersonate").arg("Chrome-146:Macos-26");
}
let output = cmd
.arg("--impersonate").arg("Chrome-146:Macos-26")
.arg(&url)
.stdin(Stdio::null())
.stdout(std::process::Stdio::piped())