tonhowtf/omniget · error

ffmpeg nao iniciou

Error message

ffmpeg nao iniciou: {}

What it means

run_ffmpeg spawns the ffmpeg binary with .output().await and maps a spawn failure to 'ffmpeg nao iniciou: <e>'. This is not an ffmpeg encoding error — it means the process could not be started at all (binary missing, not executable, or spawn syscall failed). Non-zero exits are handled separately via friendly_ffmpeg.

Solutions

1. Run ensure_ffmpeg() (as run() does) and confirm it succeeds before invoking ffmpeg directly
2. Verify with `ffmpeg -version` that the binary is installed and executable
3. Reinstall or re-download the ffmpeg dependency if the cached binary was deleted
4. Check PATH and the resolved dependency path for the current environment

Example fix

// before
let ffmpeg = "/usr/local/bin/ffmpeg"; // may not exist
// after
let ffmpeg = ensure_ffmpeg().await?; // resolves/installs and validates the binary

async fn ffmpeg_ready() -> bool {
    ensure_ffmpeg().await.is_ok()
}

match burn::run(&opts, &progress).await {
    Err(e) if e.to_string().starts_with("ffmpeg nao iniciou") => {
        ensure_ffmpeg().await?; // reinstall/resolve then retry once
        burn::run(&opts, &progress).await
    }
    other => other,
}

When it happens

Trigger: ensure_ffmpeg resolved a path that no longer exists; ffmpeg is not installed / not on PATH; the binary lacks the executable bit; OS-level spawn failure (resource limits, invalid UTF-8 args).

Common situations: Fresh container/machine without ffmpeg; dependency cache deleted between runs; downloading ffmpeg failed earlier and ensure_ffmpeg returned a stale path.

Related errors

• Failed to start ffmpeg
• ffmpeg
• yt-dlp not found — install it in Settings
• yt-dlp not found
• yt-dlp not found

AI-assisted analysis of tonhowtf/omniget@8600b91f42 (2026-09-12). Data as JSON: /api/errors/5cdf8b59cfae607f. Report an issue: GitHub.

Appendix: source

Thrown at src-tauri/src/platforms/bilibili/danmaku/burn.rs:372

    tail: &[String],
) -> Result<()> {
    let mut cmd = omniget_core::core::process::command(ffmpeg);
    cmd.args(["-y", "-hide_banner", "-loglevel", "error"])
        .args(cut)
        .arg("-i")
        .arg(input)
        .args(["-vf", filters])
        .args(common);
    if let Some((n, log)) = pass {
        cmd.args(["-pass", &n.to_string()])
            .arg("-passlogfile")
            .arg(log);
    }
    let out = cmd
        .args(tail)
        .output()
        .await
        .map_err(|e| anyhow!("ffmpeg nao iniciou: {}", e))?;
    if !out.status.success() {
        let stderr = String::from_utf8_lossy(&out.stderr);
        return Err(anyhow!("{}", friendly_ffmpeg(stderr.trim())));
    }
    Ok(())
}

/// O erro cru do libass não diz nada para quem não conhece FFmpeg.
fn friendly_ffmpeg(stderr: &str) -> String {
    if stderr.contains("fontselect") || stderr.contains("Glyph") {
        return format!(
            "a fonte do ASS não está instalada — aponte a pasta de fontes. ({})",
            stderr
        );
    }
    if stderr.is_empty() {
        return "o ffmpeg falhou sem dizer por quê".to_string();
    }

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