diff --git a/jpeg.c b/jpeg.c
index 936bc55..bc429b2 100644
--- a/jpeg.c
+++ b/jpeg.c
@@ -46,7 +46,7 @@ typedef unsigned char jboolean;
 typedef int jboolean;
 #endif
 
-#define JPEG_LIB_VERSION  62  // Version 6b
+#define JPEG_LIB_VERSION  70  // Version 6b
 
 typedef void *j_common_ptr;
 typedef struct jpeg_compress_struct *j_compress_ptr;
@@ -161,12 +161,13 @@ typedef struct {
    * Values of 1,2,4,8 are likely to be supported.  Note that different
    * components may receive different IDCT scalings.
    */
-  int DCT_scaled_size;
+  int DCT_h_scaled_size;
+  int DCT_v_scaled_size;
   /* The downsampled dimensions are the component's actual, unpadded number
-   * of samples at the main buffer (preprocessing/compression interface), thus
-   * downsampled_width = ceil(image_width * Hi/Hmax)
-   * and similarly for height.  For decompression, IDCT scaling is included, so
-   * downsampled_width = ceil(image_width * Hi/Hmax * DCT_scaled_size/DCTSIZE)
+   * of samples at the main buffer (preprocessing/compression interface);
+   * DCT scaling is included, so
+   * downsampled_width = ceil(image_width * Hi/Hmax * DCT_h_scaled_size/DCTSIZE)
+   * and similarly for height.
    */
   JDIMENSION downsampled_width;  /* actual width in samples */
   JDIMENSION downsampled_height; /* actual height in samples */
@@ -268,7 +269,8 @@ struct jpeg_decompress_struct
 	void *marker_list;
 	int max_h_samp_factor;
 	int max_v_samp_factor;
-	int min_DCT_scaled_size;
+	int min_DCT_h_scaled_size;	/* smallest DCT_h_scaled_size of any component */
+	int min_DCT_v_scaled_size;	/* smallest DCT_v_scaled_size of any component */
 	JDIMENSION total_iMCU_rows;
 	void *sample_range_limit;
 	int comps_in_scan;
@@ -344,6 +346,8 @@ struct jpeg_compress_struct
 	jboolean progressive_mode;
 	int max_h_samp_factor;
 	int max_v_samp_factor;
+	int min_DCT_h_scaled_size;	/* smallest DCT_h_scaled_size of any component */
+	int min_DCT_v_scaled_size;	/* smallest DCT_v_scaled_size of any component */
 	JDIMENSION total_iMCU_rows;
 	int comps_in_scan;
 	jpeg_component_info *cur_comp_info[MAX_COMPS_IN_SCAN];
@@ -473,7 +477,7 @@ qboolean JPEG_OpenLibrary (void)
 #elif defined(MACOSX)
 		"libjpeg.62.dylib",
 #else
-		"libjpeg.so.62",
+		"libjpeg.so.7",
 		"libjpeg.so",
 #endif
 		NULL