DrKLO/Telegram · info

3. Path to YUV input file\n

Error message

3. Path to YUV input file\n

What it means

Third descriptive line of yuvjpeg's usage block: `3. Path to YUV input file`. Documents argument #3, the raw 4:2:0 YUV input path. Printed only on the argc != 5 error path.

Source

Thrown at TMessagesProj/jni/mozjpeg/yuvjpeg.c:120

  const char *jpg_path;
  FILE *yuv_fd;
  size_t yuv_size;
  unsigned char *yuv_buffer;
  JSAMPLE *jpg_buffer;
  struct jpeg_compress_struct cinfo;
  struct jpeg_error_mgr jerr;
  FILE *jpg_fd;
  JSAMPROW yrow_pointer[16];
  JSAMPROW cbrow_pointer[8];
  JSAMPROW crrow_pointer[8];
  JSAMPROW *plane_pointer[3];
  int y;

  if (argc != 5) {
    fprintf(stderr, "Required arguments:\n");
    fprintf(stderr, "1. JPEG quality value, 0-100\n");
    fprintf(stderr, "2. Image size (e.g. '512x512')\n");
    fprintf(stderr, "3. Path to YUV input file\n");
    fprintf(stderr, "4. Path to JPG output file\n");
    return 1;
  }

  errno = 0;

  quality = strtol(argv[1], NULL, 10);
  if (errno != 0 || quality < 0 || quality > 100) {
    fprintf(stderr, "Invalid JPEG quality value!\n");
    return 1;
  }

  matches = sscanf(argv[2], "%dx%d", &luma_width, &luma_height);
  if (matches != 2) {
    fprintf(stderr, "Invalid image size input!\n");
    return 1;
  }
  if (luma_width <= 0 || luma_height <= 0) {

View on GitHub (pinned to 45ab8f4308)

Solutions

1. Pass the YUV input path as argument 3 and the JPEG output path as argument 4.
2. Confirm the YUV file exists and is readable.
3. Provide exactly four arguments in the documented order.

#include <unistd.h>
/* argument 3 must be a readable YUV file */
if (access(yuv_in, R_OK) != 0) { /* report and do not invoke */ }

When it happens

Trigger: Same trigger as 191: yuvjpeg invoked with argc != 5.

Common situations: Confusing input vs output argument slots; this line makes clear argument 3 is the YUV input and argument 4 is the JPEG output.

Related errors

• 1. JPEG quality value, 0-100\n
• 2. Image size (e.g. '512x512')\n
• Required arguments:\n
• Invalid JPEG quality value!\n
• Invalid image size input!\n

AI-assisted analysis of DrKLO/Telegram@45ab8f4308 (2026-08-14). Data as JSON: /api/errors/e7f599a3642fd0f1. Report an issue: GitHub.