DVD Write Performance
We tested DVD write performance in two ways. The first method was to burn a DVD video disc capable of playing in a consumer DVD burner. The second method was to use the DVD recorder in packet writing mode, so we could drag-and-drop data onto the disk. We used NeoDVD 4.0 to generate the DVD video files from a set of video clips. The video clips ranged in size from 192KB (yes, kilobytes) to 397MB, for a total of 3.93GB. The compression process generated actual MPEG-2 encoded files in the DVD video-compatible VIDEO_TS folder of 1.26GB. This was the folder used to burn to DVD disc. To maintain consistency, we used Nero Burning ROM to actually burn the DVD disc.
Note that the Pioneer drive could not burn to DVD+R/RW media, but we compared its DVD-R results to the Sonys results in burning both DVD-R/RW and DVD+R/RW media.
Its no surprise that the Pioneer is a better tool for creating DVD-R/RW discs. In fact, the Sony was only capable of burning DVD-RW media at 1X speed, although it performed somewhat more credibly as a DVD-R burner. Another interesting point is that the Sony is better at DVD+RW (rewritable media) than the Pioneer, but the Pioneer performed better on its own record-once media than the Sony did on DVD+R.
We used a folder with 893MB of mixed data, with file lengths varying from a few kilobytes to tens of megabytes -- 1470 files in all, some in the root directory, some in folders.
When it came to packet writing performance to rewritable DVD media, the Sony won hands down using DVD+RW media (we didnt test with DVD-RW discs). The Pioneer took nearly two hours to format a DVD-RW disc suitable for packet writing. This was in contrast to the roughly ten minute format time for the Sony drive using DVD+RW. In addition, the actual packet writing time took considerably longer on the Pioneer.