Onkyo TX-NR708 Home Theater Receiver - Deinterlacing/Scaling Tests HD Loss Test
In this test, the image has been recorded in 1080i, which the Blu-ray Disc player needs to reprocess as 1080p. The problem faced is the ability of the processor to distinguish between the still and moving parts of the image. If the processor does its job properly, the moving bar will be smooth and all of lines in the still part of the image will be visible at all times.
However, to throw a "wrench" into the test, the squares on each corner contain white lines on odd frames and black lines on even frames.
If the blocks continuously show still lines the processor is doing a complete job at reproducing all of the resolution of the original image. However, if the square blocks are seen to vibrate or strobe alternately in black (see example) and white (see example), then the video processor is not processing the full resolution of the entire image.
As you can see in this frame, the squares in the corners are displaying still lines. This means that these squares are being displayed properly as they are not showing a solid white or black square, but a square filled with alternating lines. In addition, the rotating bar is very smooth. This also means that the is doing well with 1080i/1080p deinterlacing. For a closer look at the smoothness of the rotating bar, check out an additional rotating bar closeup photo (any line blurriness is caused by camera).
Final Take
In addition to the tests shown in this gallery, what is not shown is how well the TX-NR708 detects and processes variations in film and video frame cadences.
In this area, further tests revealed that the TX-NR708 showed some instability in detection and processing of most test cadences, including the 3:2 film cadence. On the other hand, the TX-NR708 did very well in minimizing video noise, with a trade-off in displaying softer detail.
However, that being said, the rest of the tesing revealed that the TX-NR708 does very well in the video processing area for a home thater receiver. The TX-NR708 is an example of how much deinterlacing and scaling has improved in home theater receivers that offer this feature.
Taking these test results, plus features, connectivity, and audio performance, into consideration, the TX-NR708 definitely deserves attention.
For additional perspective one the Onkyo TX-NR708, also check out my Review and Photo Gallery.
However, to throw a "wrench" into the test, the squares on each corner contain white lines on odd frames and black lines on even frames.
If the blocks continuously show still lines the processor is doing a complete job at reproducing all of the resolution of the original image. However, if the square blocks are seen to vibrate or strobe alternately in black (see example) and white (see example), then the video processor is not processing the full resolution of the entire image.
As you can see in this frame, the squares in the corners are displaying still lines. This means that these squares are being displayed properly as they are not showing a solid white or black square, but a square filled with alternating lines. In addition, the rotating bar is very smooth. This also means that the is doing well with 1080i/1080p deinterlacing. For a closer look at the smoothness of the rotating bar, check out an additional rotating bar closeup photo (any line blurriness is caused by camera).
Final Take
In addition to the tests shown in this gallery, what is not shown is how well the TX-NR708 detects and processes variations in film and video frame cadences.
In this area, further tests revealed that the TX-NR708 showed some instability in detection and processing of most test cadences, including the 3:2 film cadence. On the other hand, the TX-NR708 did very well in minimizing video noise, with a trade-off in displaying softer detail.
However, that being said, the rest of the tesing revealed that the TX-NR708 does very well in the video processing area for a home thater receiver. The TX-NR708 is an example of how much deinterlacing and scaling has improved in home theater receivers that offer this feature.
Taking these test results, plus features, connectivity, and audio performance, into consideration, the TX-NR708 definitely deserves attention.
For additional perspective one the Onkyo TX-NR708, also check out my Review and Photo Gallery.
