HKUDS/DeepTutor · error · ManimRenderError

Failed to inspect rendered video duration:

Error message

Failed to inspect rendered video duration: 

What it means

Error "Failed to inspect rendered video duration: " thrown in HKUDS/DeepTutor.

Source

Thrown at deeptutor/agents/math_animator/visual_review.py:109

    async def _probe_duration(self, video_path: Path) -> float:
        command = [
            "ffprobe",
            "-v",
            "error",
            "-show_entries",
            "format=duration",
            "-of",
            "default=noprint_wrappers=1:nokey=1",
            str(video_path),
        ]
        process = await asyncio.create_subprocess_exec(
            *command,
            stdout=asyncio.subprocess.PIPE,
            stderr=asyncio.subprocess.PIPE,
        )
        stdout, stderr = await process.communicate()
        if process.returncode != 0:
            raise ManimRenderError(
                "Failed to inspect rendered video duration: "
                + stderr.decode(errors="ignore").strip()
            )
        try:
            return max(float(stdout.decode().strip() or "0"), 0.0)
        except ValueError as exc:
            raise ManimRenderError(
                "Rendered video duration could not be parsed for visual review."
            ) from exc

    @staticmethod
    def _choose_timestamps(duration: float) -> list[float]:
        if duration <= 0:
            return [0.0]
        if duration < 2:
            return [0.0, min(duration / 2, duration), max(duration - 0.05, 0.0)]
        return [
            max(duration * 0.15, 0.0),

View on GitHub (pinned to 3e82f13042)

When it happens

Trigger: Thrown at deeptutor/agents/math_animator/visual_review.py:109 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of HKUDS/DeepTutor@3e82f13042 (2026-08-27). Data as JSON: /api/errors/1c3c1b74a0a63970. Report an issue: GitHub.