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client: skip player.js deobf for Android + prefer Android-first client order

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YouTube's Android InnerTube path returns pre-signed stream URLs (no `s=`
cipher param, no `n=` throttling param) just like the iOS path. Mark
Android as deobf-exempt and put it first in the default player client
order so the typical playback path stops fetching player.js entirely.
Avoids the `could not extract sig fn name` failure on YouTube's newer
player.js shapes (eg. c2f7551f).

Desktop stays in the rotation behind botguard for completeness; it
will still try to deobf and may fail, but it's only consulted as a
fallback for botguard-signed sessions now.
This commit is contained in:
Kayos 2026-05-24 11:50:15 -07:00
parent a25907b494
commit 765a90e808
2 changed files with 12 additions and 3 deletions
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6
src/client/mod.rs
View file

@ -100,7 +100,11 @@ impl ClientType {
}
fn needs_deobf(self) -> bool {
!matches!(self, ClientType::Ios)
// Android + iOS InnerTube paths return pre-signed stream URLs (no &s= cipher,
// no &n= throttling param), so they don't need player.js deobfuscation at all.
// Skipping the deobf fetch here keeps the player path alive even when YouTube
// rotates the player.js to a shape our extractor doesn't recognise.
!matches!(self, ClientType::Ios | ClientType::Android)
}
fn needs_po_token(self) -> bool {

9
src/client/player.rs
View file

@ -245,10 +245,15 @@ impl RustyPipeQuery {
/// The order may change in the future in case YouTube applies changes to their
/// platform that disable a client or make it less reliable.
pub fn player_client_order(&self) -> &'static [ClientType] {
// Default to the InnerTube clients that don't need player.js deobfuscation
// (Android, iOS). Tv is kept as a final fallback for when the mobile clients
// return degraded responses. Desktop is only used when botguard is wired
// (po_token signing) because it otherwise serves obfuscated URLs we can't
// currently deobf on YT's newer player versions.
if self.client.inner.botguard.is_some() {
&[ClientType::Desktop, ClientType::Ios, ClientType::Tv]
&[ClientType::Android, ClientType::Ios, ClientType::Desktop, ClientType::Tv]
} else {
&[ClientType::Ios, ClientType::Tv]
&[ClientType::Android, ClientType::Ios, ClientType::Tv]
}
}