Yamaha RX-V775WA Home Theater Receiver Video Performance Tests
Yamaha RX-V775WA Home Theater Receiver - Video Performance Tests
In order to test the video performance of the Yamaha RX-V775WA Home Theater Receiver, I used the standardized HQV DVD Benchmark Test Disc orginally developed by Silicon Optix (which later became a part of IDT, and has since been acquired by Qualcomm). The disc has a series of patterns and images that test how well a video processor in a Blu-ray Disc/DVD player, TV, or Home Theater Receiver can display a good quality image when face with a low resolution or poor quality source.
In this Step-by-Step gallery, the results of several of the tests listed above are shown.
Screen shots were obtained using a Yamaha DSC-R1 Digital Still Camera. All photos were taken at at 10 megapixels and resized for posting.
1. Using an OPPO Digital DV-980H DVD Player, I set the output resolution to 480i and alternated connected the Composite (yellow) and Component (red, green, blue) video outputs to the matching composite and component video inputs on the Yamaha RX-V775WA.
2. The Yamaha RX-V775WA's HDMI output was alternately connected to a Westinghouse LVM-37w3 1080p TV/Monitor and an Epson PowerLite Home Cinema 2030 (on review loan). I confirmed, via the onscreen displayd of the Westinghouse and the Epson, that they were receiving a 1080p signal (converted and upscaled from 480i) from the HDMI output of the RX-V775WA. I also checked, via the DVD player's onscreen menu, that it was outputting a 480i signal to the Yamaha RX-V775WA.
3. I inserted a Silicon Optix/IDT HQV test disc in the DVD player and ran through a series of tests designed detect the deinterlacing and scaling ability of the Yamaha RX-V775WA.
For a photo illustrated look (photos taken using the Westinghouse TV/Monitor) at some of the test results, continue to proceed through the next series of pages...
Yamaha RX-V775WA Home Theater Receiver- HQV Jaggies Test 1 - Example 1
Here is a look at the first test I conducted to measure the video processing capabilities of the Yamaha RX-V775WA. This test (referred to as the Jaggies 1 Test) is a diagonal bar that rotates within a circle. If the bar is straight during its entire rotation, or shows minimal wrinkling or jaggedness, the on-board video processor of the RX-V775WA is doing a good job, if not, then it will fail the test.
As shown in the above photo, the diagonal bar is straight, showing no wrinkling or jaggedness as it rotates within the circle. The Yamaha RX-V775WA's video processor passes this initial test.
However, the above photo only shows the bar in one position, so we need to see what the results are when the bar is shown in another position to see if this result is consistent.
Proceed to the next photo...
Yamaha RX-V775WA Home Theater Receiver- HQV Jaggies Test 1 - Example 2
Here is a second look at the Jaggies 1 rotating bar test. Just as in the first example, the rotating bar is smooth. Despite the bar shown in a different position than the previous photo, the result is consistent, meaning that the Yamaha RX-V775WA's video processor passes this portion of the test.
Proceed to the next photo for a final look at the Jaggies 1 rotating bar test...
Yamaha RX-V775WA Home Theater Receiver - HQV Jaggies Test 1 - Example 3
In a third, and final, look at the Jaggies 1 rotating bar test results for the Yamaha RX-V775WA, the example shows the bar in more close-up. However, the motion of the bar reveals only very slight roughness along the edges that is hardly noticeable, along with a slight bend on the end where the bar meets the edge of the circle. However, this considered an excellent result.
Looking at all three examples of this Jaggies 1 test, the Yamaha RX-V775WA's video processor definitely passes.
Proceed to the next test...
Yamaha RX-V775WA Home Theater Receiver - HQV Jaggies Test 2 - Example 1
In this test three bars are moving and down in rapid motion - this is referred to as the Jaggies 2 test. If the video processor of the RX-V775WA performs well, at least one bar needs to be straight. If two bars are straight that indicates better performance, and if three lines are straight, that indicates optimum performance.
As shown in the photo, all three bars are straight - which is the best possible outcome.
As a result, the Yamaha RX-V775WA passes this test. However, let's take a closer look.
Proceed to the next photo...
Yamaha RX-V775WA Home Theater Receiver - HQV Jaggies Test 2 - Example 2
Here is a close-up view of the Jaggies 2 Test shown on the previous page with the bars in a slightly different position.
As shown in the photo, the top two bars are straight and the bottom bar is only very, very, slightly wavy (hardly noticeable by the standards of this test). This is, for all practical purposes, an optimum result, just as with the rotating bar (Jaggies 1) test, the Yamaha RX-V775WA definitely passes the bouncing bar (Jaggies 2) test.
However, there are still more tests to conduct.
Proceed to the next test...
Yamaha RX-V775WA Home Theater Receiver - HQV Flag Test - Example 1
Passing the rotating and bouncing bars tests shown so far are just two indicators of the Yamaha RX-V775WA's video processing capabilities in handling standard definition video signals. However, in addition to the basic motion of a rotating or bouncing bar, natural images contain a combination of horizontal, vertical, and diagonal motion. A waving American Flag provides is one way to test how well a video processor can handle this complex motion.
If the flag is jagged on outside edges and on the stripe edges, the video processor of the RX-V775WA, specifically 480i/480p conversion and upscaling, would be below average and result is failing grade. However, as you can see here (even when you click for the larger view), the edges of the flag and the interior stripes appear smooth. This is a passing result for this test, so far.
By proceeding to the next two photo examples, you will see the results at different point in the wave motion of the flag.
Proceed to the next photo...
Yamaha RX-V775WA Home Theater Receiver - HQV Flag Test - Example 2
Here is a second look at the waving flag test with the waving flag at a different point. The interior stripes of the flag appear are still very smooth smooth along the edges of the flag and within the stripes of the flag (click on image for a more close-up view). Just as in the previous example, the Yamaha RX-V775WA continues to pass this test.
Proceed to the next photo, for a third, and final results example for waving flag test.
Proceed to the next photo...
Yamaha RX-V775WA Home Theater Receiver - HQV Flag Test - Example 3
Here is the third, and final, look at the flag wave test. Just as in the previous two examples, both the interior stripes and outside edges appear very smooth.
When all three photo results are combined, it looks like the 480i/480p conversion and 1080p upscaling ability of the Yamaha RX-V775WA is excellent so far, but there is still more to check.
Proceed to the next test...
Yamaha RX-V775WA Home Theater Receiver - HQV Race Car Test - Example 2
Shown above is a test that shows how good the video processor of the Yamaha RX-V775WA is at detecting 3:2 source material. In other words, the video processor has to be able to detect whether the source material is film based (24 frames per second) or video based (30 frames a second) and display the image correctly on the screen without artifacts.
In the example shown above, if the video processor is poor the grandstand would display a moire pattern on the seats.
However, if the Yamaha RX-V775WA has good video processing, the Moire Pattern will not be visible or only visible during the first five frames of the cut.
However, in the photo, there is no moire pattern visible as the image pans and the race car goes by. This indicates very good performance of the Yamaha RX-V775WA with regards to accurate processing of film or video-based content containing detailed backgrounds and fast moving foreground objects.
For another sample of how this image should look, check out an example of this same test as performed by a Sony STR-DN1040 Home Theater Receiver, from a past review.
For a sample of how this test should not look, check out an example of this same test as performed by the Harman Kardon AVR2600 Home Theater Receiver, from a past product review.
Yamaha RX-V775WA Home Theater Receiver -HQV Titles Test
Here is a second photo of the "Race Car Test" as explained on the previous page.
Just as in the previous example, there is no moire pattern visible as the image pans and the race car goes by. This indicates that the Yamaha RX-V775WA is performing well with regards to accurate processing of film or video-based content containing detailed backgrounds and fast moving foreground objects.
For another sample of how this image should look in this position, check out an example of this same test as performed by a Sony STR-DN1040 Home Theater Receiver, from a past review.
For a sample of how this test should not look, check out an example of this same test as performed by the Harman Kardon AVR2600 Home Theater Receiver, from a past product review.
Proceed to the next photo...
Yamaha RX-V775WA Home Theater Receiver - HQV HD Loss Test
Even though a video processor may be able detect the difference between video and film-based sources, such as shown in the previous photo, can it detect both of them at the same time? This additional factor is important. Often, video titles (moving at 30 frames per second) are laid over film (which is moving at 24 frames per second). This can cause problems as the combination of both these elements can result in artifacts that make the titles look jagged or broken.
However, in this case, if the receiver can detect the differences between the titles and the rest of the image, the titles should appear smooth.
As shown in this results example, the letters are smooth (the blurriness is due to the camera's shutter) and shows that the Yamaha RX-V775WA detects and shows a very stable scrolling title image.
Proceed to the next test...
Yamaha RX-V775WA Home Theater Receiver - HQV HD Loss Test - Close-up
Here is an additional, important, test of video performance as it relates to high-definition source material.
In this test, the image has been recorded in 1080i on Blu-ray Disc and is being played back through the Yamaha RX-V775WA using a OPPO BDP-103 Blu-ray Disc player as the source. In this case, the Blu-ray Disc player is set to 1080i resolution output so that the 1080i signal on the Blu-ray is passed directly to the RX-V775WA for conversion to 1080p.
The Blu-ray Disc player is connected to the RX-V775WA via the HDMI video output.
The problem faced by the RX-V775WA receiver is that it has to distinguish between the still and moving parts of the image. If the receiver's processor does its job well, the bar, as it movies, will be smooth and all of lines in the still part of the image will be visible at all times.
However, to make the test more difficult, 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 appears smooth due to the size of this photo.
NOTE: Line blurriness caused by camera shutter speed, not the video processor in the Yamaha RX-V775WA or the TV.
Here is a close-up look at the rotating bar shown in the previous photo. The image has been recorded in 1080i, which the Yamaha RX-V775WA needs to reprocess as 1080p. If the processor does its job properly, the moving bar will be smooth.
However, as seen in this close-up photo of the rotating bar, which appeared smooth in the previous photo, is still fairly smooth, only showing some very slight roughness along the edges.
This is still considered a very good result, and there is no excessive waviness or jaggedness, indicating that the RX-V775WA does well with both 1080i to 1080p still image conversion, and 1080i to 1080p conversion with moving objects.
NOTE: Line blurriness caused by camera shutter speed, not the video processor in the Yamaha RX-V775WA or the TV.
Final Note
Here is a summary of the additional tests performed that are not shown in the previous photo examples:
Color Bars: PASS
Detail (resolution enhancement): PASS
Noise Reduction: PASS
Mosquito Noise (the "buzzing" that can appear around objects): PASS
Motion Adaptive Noise Reduction (noise and ghosting that can follow rapidly moving objects): - PASS
Assorted Cadences:
2:2 - PASS
2:2:2:4 - PASS
2:3:3:2 - PASS
3:2:3:2:2 - PASS
5:5 - PASS
6:4 - PASS
8:7 - PASS
3:2 (Progressive Scan) - PASS
For additional perspective on the Yamaha RX-V775WA Home Theater Receiver, plus a close-up photo look at its features and connection offerings, check out my Review and Photo Profile.
In order to test the video performance of the Yamaha RX-V775WA Home Theater Receiver, I used the standardized HQV DVD Benchmark Test Disc orginally developed by Silicon Optix (which later became a part of IDT, and has since been acquired by Qualcomm). The disc has a series of patterns and images that test how well a video processor in a Blu-ray Disc/DVD player, TV, or Home Theater Receiver can display a good quality image when face with a low resolution or poor quality source.
In this Step-by-Step gallery, the results of several of the tests listed above are shown.
Screen shots were obtained using a Yamaha DSC-R1 Digital Still Camera. All photos were taken at at 10 megapixels and resized for posting.
1. Using an OPPO Digital DV-980H DVD Player, I set the output resolution to 480i and alternated connected the Composite (yellow) and Component (red, green, blue) video outputs to the matching composite and component video inputs on the Yamaha RX-V775WA.
2. The Yamaha RX-V775WA's HDMI output was alternately connected to a Westinghouse LVM-37w3 1080p TV/Monitor and an Epson PowerLite Home Cinema 2030 (on review loan). I confirmed, via the onscreen displayd of the Westinghouse and the Epson, that they were receiving a 1080p signal (converted and upscaled from 480i) from the HDMI output of the RX-V775WA. I also checked, via the DVD player's onscreen menu, that it was outputting a 480i signal to the Yamaha RX-V775WA.
3. I inserted a Silicon Optix/IDT HQV test disc in the DVD player and ran through a series of tests designed detect the deinterlacing and scaling ability of the Yamaha RX-V775WA.
For a photo illustrated look (photos taken using the Westinghouse TV/Monitor) at some of the test results, continue to proceed through the next series of pages...
Yamaha RX-V775WA Home Theater Receiver- HQV Jaggies Test 1 - Example 1
Here is a look at the first test I conducted to measure the video processing capabilities of the Yamaha RX-V775WA. This test (referred to as the Jaggies 1 Test) is a diagonal bar that rotates within a circle. If the bar is straight during its entire rotation, or shows minimal wrinkling or jaggedness, the on-board video processor of the RX-V775WA is doing a good job, if not, then it will fail the test.
As shown in the above photo, the diagonal bar is straight, showing no wrinkling or jaggedness as it rotates within the circle. The Yamaha RX-V775WA's video processor passes this initial test.
However, the above photo only shows the bar in one position, so we need to see what the results are when the bar is shown in another position to see if this result is consistent.
Proceed to the next photo...
Yamaha RX-V775WA Home Theater Receiver- HQV Jaggies Test 1 - Example 2
Here is a second look at the Jaggies 1 rotating bar test. Just as in the first example, the rotating bar is smooth. Despite the bar shown in a different position than the previous photo, the result is consistent, meaning that the Yamaha RX-V775WA's video processor passes this portion of the test.
Proceed to the next photo for a final look at the Jaggies 1 rotating bar test...
Yamaha RX-V775WA Home Theater Receiver - HQV Jaggies Test 1 - Example 3
In a third, and final, look at the Jaggies 1 rotating bar test results for the Yamaha RX-V775WA, the example shows the bar in more close-up. However, the motion of the bar reveals only very slight roughness along the edges that is hardly noticeable, along with a slight bend on the end where the bar meets the edge of the circle. However, this considered an excellent result.
Looking at all three examples of this Jaggies 1 test, the Yamaha RX-V775WA's video processor definitely passes.
Proceed to the next test...
Yamaha RX-V775WA Home Theater Receiver - HQV Jaggies Test 2 - Example 1
In this test three bars are moving and down in rapid motion - this is referred to as the Jaggies 2 test. If the video processor of the RX-V775WA performs well, at least one bar needs to be straight. If two bars are straight that indicates better performance, and if three lines are straight, that indicates optimum performance.
As shown in the photo, all three bars are straight - which is the best possible outcome.
As a result, the Yamaha RX-V775WA passes this test. However, let's take a closer look.
Proceed to the next photo...
Yamaha RX-V775WA Home Theater Receiver - HQV Jaggies Test 2 - Example 2
Here is a close-up view of the Jaggies 2 Test shown on the previous page with the bars in a slightly different position.
As shown in the photo, the top two bars are straight and the bottom bar is only very, very, slightly wavy (hardly noticeable by the standards of this test). This is, for all practical purposes, an optimum result, just as with the rotating bar (Jaggies 1) test, the Yamaha RX-V775WA definitely passes the bouncing bar (Jaggies 2) test.
However, there are still more tests to conduct.
Proceed to the next test...
Yamaha RX-V775WA Home Theater Receiver - HQV Flag Test - Example 1
Passing the rotating and bouncing bars tests shown so far are just two indicators of the Yamaha RX-V775WA's video processing capabilities in handling standard definition video signals. However, in addition to the basic motion of a rotating or bouncing bar, natural images contain a combination of horizontal, vertical, and diagonal motion. A waving American Flag provides is one way to test how well a video processor can handle this complex motion.
If the flag is jagged on outside edges and on the stripe edges, the video processor of the RX-V775WA, specifically 480i/480p conversion and upscaling, would be below average and result is failing grade. However, as you can see here (even when you click for the larger view), the edges of the flag and the interior stripes appear smooth. This is a passing result for this test, so far.
By proceeding to the next two photo examples, you will see the results at different point in the wave motion of the flag.
Proceed to the next photo...
Yamaha RX-V775WA Home Theater Receiver - HQV Flag Test - Example 2
Here is a second look at the waving flag test with the waving flag at a different point. The interior stripes of the flag appear are still very smooth smooth along the edges of the flag and within the stripes of the flag (click on image for a more close-up view). Just as in the previous example, the Yamaha RX-V775WA continues to pass this test.
Proceed to the next photo, for a third, and final results example for waving flag test.
Proceed to the next photo...
Yamaha RX-V775WA Home Theater Receiver - HQV Flag Test - Example 3
Here is the third, and final, look at the flag wave test. Just as in the previous two examples, both the interior stripes and outside edges appear very smooth.
When all three photo results are combined, it looks like the 480i/480p conversion and 1080p upscaling ability of the Yamaha RX-V775WA is excellent so far, but there is still more to check.
Proceed to the next test...
Yamaha RX-V775WA Home Theater Receiver - HQV Race Car Test - Example 2
Shown above is a test that shows how good the video processor of the Yamaha RX-V775WA is at detecting 3:2 source material. In other words, the video processor has to be able to detect whether the source material is film based (24 frames per second) or video based (30 frames a second) and display the image correctly on the screen without artifacts.
In the example shown above, if the video processor is poor the grandstand would display a moire pattern on the seats.
However, if the Yamaha RX-V775WA has good video processing, the Moire Pattern will not be visible or only visible during the first five frames of the cut.
However, in the photo, there is no moire pattern visible as the image pans and the race car goes by. This indicates very good performance of the Yamaha RX-V775WA with regards to accurate processing of film or video-based content containing detailed backgrounds and fast moving foreground objects.
For another sample of how this image should look, check out an example of this same test as performed by a Sony STR-DN1040 Home Theater Receiver, from a past review.
For a sample of how this test should not look, check out an example of this same test as performed by the Harman Kardon AVR2600 Home Theater Receiver, from a past product review.
Yamaha RX-V775WA Home Theater Receiver -HQV Titles Test
Here is a second photo of the "Race Car Test" as explained on the previous page.
Just as in the previous example, there is no moire pattern visible as the image pans and the race car goes by. This indicates that the Yamaha RX-V775WA is performing well with regards to accurate processing of film or video-based content containing detailed backgrounds and fast moving foreground objects.
For another sample of how this image should look in this position, check out an example of this same test as performed by a Sony STR-DN1040 Home Theater Receiver, from a past review.
For a sample of how this test should not look, check out an example of this same test as performed by the Harman Kardon AVR2600 Home Theater Receiver, from a past product review.
Proceed to the next photo...
Yamaha RX-V775WA Home Theater Receiver - HQV HD Loss Test
Even though a video processor may be able detect the difference between video and film-based sources, such as shown in the previous photo, can it detect both of them at the same time? This additional factor is important. Often, video titles (moving at 30 frames per second) are laid over film (which is moving at 24 frames per second). This can cause problems as the combination of both these elements can result in artifacts that make the titles look jagged or broken.
However, in this case, if the receiver can detect the differences between the titles and the rest of the image, the titles should appear smooth.
As shown in this results example, the letters are smooth (the blurriness is due to the camera's shutter) and shows that the Yamaha RX-V775WA detects and shows a very stable scrolling title image.
Proceed to the next test...
Yamaha RX-V775WA Home Theater Receiver - HQV HD Loss Test - Close-up
Here is an additional, important, test of video performance as it relates to high-definition source material.
In this test, the image has been recorded in 1080i on Blu-ray Disc and is being played back through the Yamaha RX-V775WA using a OPPO BDP-103 Blu-ray Disc player as the source. In this case, the Blu-ray Disc player is set to 1080i resolution output so that the 1080i signal on the Blu-ray is passed directly to the RX-V775WA for conversion to 1080p.
The Blu-ray Disc player is connected to the RX-V775WA via the HDMI video output.
The problem faced by the RX-V775WA receiver is that it has to distinguish between the still and moving parts of the image. If the receiver's processor does its job well, the bar, as it movies, will be smooth and all of lines in the still part of the image will be visible at all times.
However, to make the test more difficult, 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 appears smooth due to the size of this photo.
NOTE: Line blurriness caused by camera shutter speed, not the video processor in the Yamaha RX-V775WA or the TV.
Here is a close-up look at the rotating bar shown in the previous photo. The image has been recorded in 1080i, which the Yamaha RX-V775WA needs to reprocess as 1080p. If the processor does its job properly, the moving bar will be smooth.
However, as seen in this close-up photo of the rotating bar, which appeared smooth in the previous photo, is still fairly smooth, only showing some very slight roughness along the edges.
This is still considered a very good result, and there is no excessive waviness or jaggedness, indicating that the RX-V775WA does well with both 1080i to 1080p still image conversion, and 1080i to 1080p conversion with moving objects.
NOTE: Line blurriness caused by camera shutter speed, not the video processor in the Yamaha RX-V775WA or the TV.
Final Note
Here is a summary of the additional tests performed that are not shown in the previous photo examples:
Color Bars: PASS
Detail (resolution enhancement): PASS
Noise Reduction: PASS
Mosquito Noise (the "buzzing" that can appear around objects): PASS
Motion Adaptive Noise Reduction (noise and ghosting that can follow rapidly moving objects): - PASS
Assorted Cadences:
2:2 - PASS
2:2:2:4 - PASS
2:3:3:2 - PASS
3:2:3:2:2 - PASS
5:5 - PASS
6:4 - PASS
8:7 - PASS
3:2 (Progressive Scan) - PASS
For additional perspective on the Yamaha RX-V775WA Home Theater Receiver, plus a close-up photo look at its features and connection offerings, check out my Review and Photo Profile.
Source...