x264 --seek - QuickTime Programing

pipe入力だとx264で--seekが使えません。で、パッチ。巻き戻しで呼び出されるとNGだけど、通常は大丈夫なハズ。

% diff -cEbw muxers.org.c muxers.c
*** muxers.org.c        Sun May  7 18:46:06 2006
--- muxers.c    Sun May  7 18:59:23 2006
***************
*** 265,275 ****
--- 265,279 ----
      
      if( i_frame != h->next_frame )
      {
+         if(i_frame < h->next_frame){
              if (fseek(h->fh, (uint64_t)i_frame*(3*(h->width*h->height)/2+h->frame_header_len)
                        + h->seq_header_len, SEEK_SET))
                  return -1;
+             h->next_frame = i_frame;
+         }
      }
      
+     do{
      /* Read frame header - without terminating '\n' */
      if (fread(header, 1, slen, h->fh) != slen)
          return -1;
***************
*** 297,303 ****
          || fread(p_pic->img.plane[2], 1, h->width * h->height / 4, h->fh) <= 0)
          return -1;
  
!     h->next_frame = i_frame+1;
  
      return 0;
  }
--- 301,308 ----
          || fread(p_pic->img.plane[2], 1, h->width * h->height / 4, h->fh) <= 0)
          return -1;
      
!     h->next_frame++;
!     } while(h->next_frame != i_frame+1);
      
      return 0;
  }

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