DrKLO/Telegram · error

-merge parameter must be at least 1.\n

Error message

-merge parameter must be at least 1.\n

What it means

The -merge option takes an integer argument specifying how many consecutive Opus packets to concatenate via opus_repacketizer_cat before emitting output. The value is parsed with atoi(), which returns 0 for non-numeric strings. A merge value of 0 or negative is rejected because merging zero packets is meaningless. The parsed value is used directly as nb_packets in the read loop at line 119.

Source

Thrown at TMessagesProj/jni/opus/src/repacketizer_demo.c:81

   int len[48];
   int rng[48];
   OpusRepacketizer *rp;
   unsigned char output_packet[MAX_PACKETOUT];
   int merge = 1, split=0;

   if (argc < 3)
   {
      usage(argv[0]);
      return EXIT_FAILURE;
   }
   for (i=1;i<argc-2;i++)
   {
      if (strcmp(argv[i], "-merge")==0)
      {
         merge = atoi(argv[i+1]);
         if(merge<1)
         {
            fprintf(stderr, "-merge parameter must be at least 1.\n");
            return EXIT_FAILURE;
         }
         if(merge>48)
         {
            fprintf(stderr, "-merge parameter must be less than 48.\n");
            return EXIT_FAILURE;
         }
         i++;
      } else if (strcmp(argv[i], "-split")==0)
         split = 1;
      else
      {
         fprintf(stderr, "Unknown option: %s\n", argv[i]);
         usage(argv[0]);
         return EXIT_FAILURE;
      }
   }
   fin = fopen(argv[argc-2], "r");

View on GitHub (pinned to 45ab8f4308)

Solutions

1. Pass a positive integer: `-merge 2` or higher (up to 48).
2. If unsure of the value, omit -merge entirely — it defaults to 1 (line 67).

Example fix

// before
repacketizer_demo -merge 0 in.oct out.oct
// after
repacketizer_demo -merge 2 in.oct out.oct

// Validate merge value before passing to repacketizer logic
int merge = atoi(arg);
if (merge < 1) {
    fprintf(stderr, "-merge parameter must be at least 1.\n");
    return EXIT_FAILURE;
}

When it happens

Trigger: Passing `-merge 0`, `-merge -5`, or `-merge abc` (atoi returns 0). The check at line 79 fires when merge < 1.

Common situations: Typo in the numeric argument; passing a variable that expanded to empty; shell quoting that dropped the number leaving the next token as a separate unrecognized option.

Related errors

• usage: %s [options] input_file output_file\n
• -merge parameter must be less than 48.\n
• Unknown option: %s\n
• Error opening input file: %s\n
• Error opening output file: %s\n

AI-assisted analysis of DrKLO/Telegram@45ab8f4308 (2026-08-14). Data as JSON: /api/errors/c8a74d8a95c7701e. Report an issue: GitHub.