def convert020002(hhmmss: str) -> int:
"""
Convert a six‑character 'hhmmss' string to total whole minutes.
Returns -1 on malformed input.
"""
if len(hhmmss) != 6 or not hhmmss.isdigit():
return -1
hour = int(hhmmss[:2])
minute = int(hhmmss[2:4])
second = int(hhmmss[4:])
if hour > 23 or minute > 59 or second > 59:
return -1
return hour * 60 + minute + second // 60
Typical usage in a pandas pipeline:
df['elapsed_min'] = df['raw_ts'].apply(convert020002)
Converting a 20GB file, even with a good computer, is going to take some time. Because the file is so dense, your CPU is going to be working hard.
Pro-tip: If you have a dedicated graphics card (GPU), make sure to enable hardware acceleration (like NVENC for Nvidia or VideoToolbox for Mac) in your conversion settings. It won't compress the file quite as efficiently as your CPU, but it will cut the conversion time in half.
After conversion, save as sone385.eng.srt (adjusted). Play with VLC to verify that the subtitle at 02:00.002 now matches the action.
public class Sone385EngSub
/**
* Convert "hhmmss" to minutes, truncating seconds.
*
* @param hhmmss six‑character string
* @return total minutes, or throws IllegalArgumentException
*/
public static int convert020002(String hhmmss) hhmmss.length() != 6
| Ambiguity | Suggestion |
|-----------|-------------|
| Is 020002 hours:minutes:seconds or minutes:seconds:milliseconds? | Look at total video length. If file < 1 hour, likely 00:02:00.02. |
| Does min mean minute or minimum? | In video context, “min” usually means minute; “min” as minimum is rare. |
| Is this a one‑time command or a recurring job? | 020002 suggests a specific timestamp, not a generic flag. |
| Aspect | Description |
|--------|-------------|
| Namespace | sone385engsub (C‑style library, Java package, or Python module depending on the host platform). |
| Function signature | int convert020002( const char *hhmmss );
or int convert020002( std::string hhmmss );
or int convert020002( str hhmmss ) → int |
| Input | A 6‑character string (or integer) representing a time in hhmmss format – e.g., "020002" = 02 h 00 m 02 s. The routine expects zero‑padded fields; any deviation triggers an error. |
| Output | An integer representing the total number of whole minutes contained in the supplied time. Fractional minutes are truncated (i.e., floor). |
| Error handling | - Returns ‑1 on invalid format (non‑numeric, length ≠ 6).
- Returns ‑2 if the hour component exceeds the allowed range (0‑23).
- Returns ‑3 if minutes or seconds exceed 59. |
| Performance | O(1) time, O(1) space. The routine consists of three integer parses and a few arithmetic operations – suitable for high‑frequency (≥ 10 kHz) calls on embedded MCUs. |
Below are ready‑to‑copy snippets for the most common environments where SONE‑385 ENG‑SUB is used.