microsoft/VibeVoice · error · ValueError

No valid content found in text file

Error message

No valid content found in text file

What it means

When `text` points at a .txt file, each line is either matched as 'Speaker N: ...' or treated as plain dialogue text assigned to a running speaker. script_lines only stays empty when every line was blank/whitespace, so this error effectively means the text file contains no usable content.

Source

Thrown at vibevoice/processor/vibevoice_processor.py:592

            line = line.strip()
            if not line:
                continue
            
            # Try to parse as "Speaker X: text" format
            # Use regex to be more robust
            speaker_match = re.match(r'^Speaker\s+(\d+)\s*:\s*(.*)$', line, re.IGNORECASE)
            
            if speaker_match:
                speaker_id = int(speaker_match.group(1))
                text = speaker_match.group(2).strip()
                if text:
                    script_lines.append(f"Speaker {speaker_id}: {text}")
            else:
                # Treat as plain text - assign to current speaker
                script_lines.append(f"Speaker {current_speaker}: {line}")
        
        if not script_lines:
            raise ValueError("No valid content found in text file")
            
        return "\n".join(script_lines)

    def _parse_script(self, script: str) -> List[Tuple[int, str]]:
        """Parse script into list of (speaker_id, text) tuples."""
        lines = script.strip().split("\n")
        parsed_lines = []
        speaker_ids = []
                
        # First pass: parse all lines and collect speaker IDs
        for line in lines:
            if not line.strip():
                continue
                
            # Use regex to handle edge cases like multiple colons
            match = re.match(r'^Speaker\s+(\d+)\s*:\s*(.*)$', line.strip(), re.IGNORECASE)
            
            if match:

View on GitHub (pinned to 94da20d98b)

Solutions

1. Verify the file has non-blank lines: check file size and open it to confirm content.
2. If the file legitimately has no dialogue, guard upstream and skip the call instead of feeding an empty transcript.
3. Re-export or re-download the transcript if it was truncated.

Example fix

# before
processor(text='dialog.txt')  # dialog.txt is empty

# after
# dialog.txt:
# Speaker 1: Welcome to the show.
# Speaker 2: Thanks for having me.
processor(text='dialog.txt')

content = open(text_path).read()
if not content.strip():
    raise ValueError(f'transcript file is empty: {text_path}')
enc = processor(text=text_path)

def is_nonempty_text_file(path: str) -> bool:
    return os.path.exists(path) and os.path.getsize(path) > 0

try:
    enc = processor(text=text_path)
except ValueError as e:
    if 'No valid content' in str(e):
        raise ValueError(f'transcript {text_path} is empty or whitespace-only') from e
    raise

When it happens

Trigger: Passing a .txt path that exists but is empty or contains only blank lines/whitespace; pointing at the wrong file (e.g. a placeholder or a truncated download).

Common situations: Zero-byte transcript files from a failed download or interrupted export; passing a directory-adjacent file of the same name; files with only a BOM or newline characters.

Related errors

• No valid entries found in JSON file
• JSON file must contain a list of speaker entries
• Audio input is required for ASR processing
• Could not process input text: {text}
• No valid speaker lines found in script

AI-assisted analysis of microsoft/VibeVoice@94da20d98b (2026-08-15). Data as JSON: /api/errors/f6bb3fa0127d9ddb. Report an issue: GitHub.