OSSC (DIY video digitizer & scandoubler)

[plasticxo]

Sorry for my stupid post, I now understand you were offering a second chance to the 1st on the list....

[Einhandr]

I'm about to pull the trigger on a Vizio d40u-d1, but retrorgb was saying he was getting 2.5 frames of lag from the OSSC in line triple mode. Latency is probably the biggest determining factor in what display I'm going to buy. Has anyone tried running like triple into a DVDO scaler and outputting 1080p into this set? Are we seeing the same type of latency? I'm hoping maybe the 2.5 frames will reduce when trying to scale 1080p vs 720p.

[Fudoh]

The RTINGS review mentions that you get 2.5 frames of lag on all inputs (even with low latency game mode enabled), except for HDMI input 5, which gives a sub-1-frame delay. Since the lag on this model is identical for 1080p and 4K I have a hard time believing that it would be any higher for a 720p source.

[paulb_nl]

That low input lag is probably only with 4:2:2 and lower. That could be the reason why retrorgb got 2.5 frames with the OSSC. Also the TV doesn't even support 1080p 4:4:4 and RTINGS had said that all current Vizio TVs do not display 4:4:4 properly.

[BuckoA51]

Sorry for my stupid post, I now understand you were offering a second chance to the 1st on the list....

No problem, last batch of 2nd chance invites went out today, 50 more invites tomorrow.

[orange808]

I'm about to pull the trigger on a Vizio d40u-d1, but retrorgb was saying he was getting 2.5 frames of lag from the OSSC in line triple mode. Latency is probably the biggest determining factor in what display I'm going to buy. Has anyone tried running like triple into a DVDO scaler and outputting 1080p into this set? Are we seeing the same type of latency? I'm hoping maybe the 2.5 frames will reduce when trying to scale 1080p vs 720p.

I have one of the D50u-d1 2016 Vizio panels. I have tested the display for lag using my Leo Bodnar devices and the Dreamcast 240p test suite microphone lag test.

The panel has only input suitable for gaming. In game mode without motion strobing, the high speed HDMI port reports 13.7ms at 1080p and 13.8ms lag at 720p. The Vizio internal OEM scaler handles 720p in a microsecond. These are Leo Bodnar results.

The lowest possible lag on all other HDMI inputs is 64ms (in game mode).

I tested the Vizio's component in by chaining the Dreamcast through the DVDO. Component is about 4 frames of lag. The Dreamcast 240p test suite microphone lag test has some room for error, but it consistently reported 66.6ms of lag.

The panel has one great HDMI input, everything else is garbage for gaming.

The Vizio does not support 4:4:4 color. You will probably want to pair the display with an HDMI switcher and some other video processing equipment.

Hope this helps.

[Einhandr]

I'm about to pull the trigger on a Vizio d40u-d1, but retrorgb was saying he was getting 2.5 frames of lag from the OSSC in line triple mode. Latency is probably the biggest determining factor in what display I'm going to buy. Has anyone tried running like triple into a DVDO scaler and outputting 1080p into this set? Are we seeing the same type of latency? I'm hoping maybe the 2.5 frames will reduce when trying to scale 1080p vs 720p.

I have one of the D50u-d1 2016 Vizio panels. I have tested the display for lag using my Leo Bodnar devices and the Dreamcast 240p test suite microphone lag test.

The panel has only input suitable for gaming. In game mode without motion strobing, the high speed HDMI port reports 13.7ms at 1080p and 13.8ms lag at 720p. The Vizio internal OEM scaler handles 720p in a microsecond. These are Leo Bodnar results.

The lowest possible lag on all other HDMI inputs is 64ms (in game mode).

I tested the Vizio's component in by chaining the Dreamcast through the DVDO. Component is about 4 frames of lag. The Dreamcast 240p test suite microphone lag test has some room for error, but it consistently reported 66.6ms of lag.

The panel has one great HDMI input, everything else is garbage for gaming.

The Vizio does not support 4:4:4 color. You will probably want to pair the display with an HDMI switcher and some other video processing equipment.

Hope this helps.

So if all I'm running is 240p content all through rgb SCART switch to an OSSC/DVDO combo to one HDMI-out this panel would be suitable? If I wanted to use other consoles that utilize HDMI I could just use a HDMI switch to that input like you suggested.

Like I mentioned earlier, latency and input lag is my biggest constraint (besides budget) for my display. Are there any other current panels on the market that could produce the same results as that high speed HDMI input that's around the same price range?

[orange808]

I'm about to pull the trigger on a Vizio d40u-d1, but retrorgb was saying he was getting 2.5 frames of lag from the OSSC in line triple mode. Latency is probably the biggest determining factor in what display I'm going to buy. Has anyone tried running like triple into a DVDO scaler and outputting 1080p into this set? Are we seeing the same type of latency? I'm hoping maybe the 2.5 frames will reduce when trying to scale 1080p vs 720p.

I have one of the D50u-d1 2016 Vizio panels. I have tested the display for lag using my Leo Bodnar devices and the Dreamcast 240p test suite microphone lag test.

The panel has only input suitable for gaming. In game mode without motion strobing, the high speed HDMI port reports 13.7ms at 1080p and 13.8ms lag at 720p. The Vizio internal OEM scaler handles 720p in a microsecond. These are Leo Bodnar results.

The lowest possible lag on all other HDMI inputs is 64ms (in game mode).

I tested the Vizio's component in by chaining the Dreamcast through the DVDO. Component is about 4 frames of lag. The Dreamcast 240p test suite microphone lag test has some room for error, but it consistently reported 66.6ms of lag.

The panel has one great HDMI input, everything else is garbage for gaming.

The Vizio does not support 4:4:4 color. You will probably want to pair the display with an HDMI switcher and some other video processing equipment.

Hope this helps.

So if all I'm running is 240p content all through rgb in OSSC/DVDO combo to one HDMI out this panel would be suitable? If I wanted to use other consoles that utilize HDMI I could just use a HDMI switch to that input like you suggested.

I do not have an OSSC yet. I have chained an XRGB-2 through the DVDO vp50 and an HDMI switch--and it works very well.

You should have no issues when using a DVDO processor. Fudoh recommended the HD, HD+, vp20, vp30, vp50, or vp50pro.

I do not know of any large panels that can rival the Vizio D series on latency right now--at any price. The motion strobing at 60Hz is also pretty good. Just as good as using "Lightframe" on my BenQ.

If you want a faster display, you will need to wait until more new displays come out. New gaming monitors do not perform motion strobing (lightframe) on 60Hz sources. You don't want your games to smear like a huge Game Boy. So, the lower lag on new gaming monitors comes at a steep cost for old games. There is no large display with 4:4:4 support, motion strobing at 60Hz, and sub-1 frame lag right now.

[Einhandr]

I do not have an OSSC yet. I have chained an XRGB-2 through the DVDO vp50 and an HDMI switch--and it works very well.

You should have no issues when using a DVDO processor. Fudoh recommended the HD, HD+, vp20, vp30, vp50, or vp50pro.

I don't have an OSSC yet either, getting closer though! I do have a VP20 and a VP30 so I'll probably just run everything through the VP30 for now. Thanks for the info and advice, at 13/14 ms, that's probably the best I'll get in that price range.

[Fudoh]

If you're running through a DVDO you don't have to worry about missing 4:4:4 support on the Vizio either, since the DVDO's internal processing is 4:2:2 all the way anyway.

[NormalFish]

Sorry for my stupid post, I now understand you were offering a second chance to the 1st on the list....

No problem, last batch of 2nd chance invites went out today, 50 more invites tomorrow.

The batch is larger than 50, right? Are you just doing it phases or does that 50 still constitute people who are being given a last chance?

[Einhandr]

Sorry for my stupid post, I now understand you were offering a second chance to the 1st on the list....

No problem, last batch of 2nd chance invites went out today, 50 more invites tomorrow.

The batch is larger than 50, right? Are you just doing it phases or does that 50 still constitute people who are being given a last chance?

Maybe he forgot a "0".

[NormalFish]

Maybe he forgot a "0".

that would definitely make more sense

[BuckoA51]

The batch is larger than 50, right? Are you just doing it phases or does that 50 still constitute people who are being given a last chance?

Right, doing it in phases.

[Sid]

The email states that if I don't order this time it will be assumed that I have changed my mind. So those simply waiting for the audio upgrade (like me), that got in early, will regardless be knocked off the list?

The only thing holding me back from paying for it right now is the lack of the audio option I was hoping for.

[SGGG2]

Received the email this morning, but I want to give my reservation to Philexile. How to proceed?

[BuckoA51]

Received the email this morning, but I want to give my reservation to Philexile. How to proceed?

Ok I've no problem with that, can you contact me through the website with your details and his?

Next batch of OSSC invites just went out. If you’re number 243 or under you should have had an invite now. If not, message me and I’ll look into it.

[eric90000]

Just ordered can't wait to finally get it.

Bucko, do they start shipping once the 500 have been ordered?

[BuckoA51]

No, they ship within a couple of days (staff at the local post office would probably never talk to me again if I turned up with 500 boxes in one day).

[SGGG2]

Ok I've no problem with that, can you contact me through the website with your details and his?

Done!

[Seraphic]

Guess I have a long wait until I can order one as I am 1601 on the list.

[BuckoA51]

Sent another batch of invites - If you're number 243 or under you should have had an invite now. If not, message me and I'll look into it.

[Woozle]

Just ordered an OSSC! So excited to try it out

[neorichieb1971]

If you don't mind me asking. Whats the uptake on the OSSC vs the emailing list?

[Bahn Yuki]

I'm about to pull the trigger on a Vizio d40u-d1, but retrorgb was saying he was getting 2.5 frames of lag from the OSSC in line triple mode. Latency is probably the biggest determining factor in what display I'm going to buy. Has anyone tried running like triple into a DVDO scaler and outputting 1080p into this set? Are we seeing the same type of latency? I'm hoping maybe the 2.5 frames will reduce when trying to scale 1080p vs 720p.

I have one of the D50u-d1 2016 Vizio panels. I have tested the display for lag using my Leo Bodnar devices and the Dreamcast 240p test suite microphone lag test.

The panel has only input suitable for gaming. In game mode without motion strobing, the high speed HDMI port reports 13.7ms at 1080p and 13.8ms lag at 720p. The Vizio internal OEM scaler handles 720p in a microsecond. These are Leo Bodnar results.

The lowest possible lag on all other HDMI inputs is 64ms (in game mode).

I tested the Vizio's component in by chaining the Dreamcast through the DVDO. Component is about 4 frames of lag. The Dreamcast 240p test suite microphone lag test has some room for error, but it consistently reported 66.6ms of lag.

The panel has one great HDMI input, everything else is garbage for gaming.

The Vizio does not support 4:4:4 color. You will probably want to pair the display with an HDMI switcher and some other video processing equipment.

Hope this helps.

My friend picked up the 40" 4k D series for $306 at Target. I currently use the Vizio for my PC monitor and it's excellent l

Sent from my SAMSUNG-SM-G870A using Tapatalk

[Einhandr]

I'm about to pull the trigger on a Vizio d40u-d1, but retrorgb was saying he was getting 2.5 frames of lag from the OSSC in line triple mode. Latency is probably the biggest determining factor in what display I'm going to buy. Has anyone tried running like triple into a DVDO scaler and outputting 1080p into this set? Are we seeing the same type of latency? I'm hoping maybe the 2.5 frames will reduce when trying to scale 1080p vs 720p.

I have one of the D50u-d1 2016 Vizio panels. I have tested the display for lag using my Leo Bodnar devices and the Dreamcast 240p test suite microphone lag test.

The panel has only input suitable for gaming. In game mode without motion strobing, the high speed HDMI port reports 13.7ms at 1080p and 13.8ms lag at 720p. The Vizio internal OEM scaler handles 720p in a microsecond. These are Leo Bodnar results.

The lowest possible lag on all other HDMI inputs is 64ms (in game mode).

I tested the Vizio's component in by chaining the Dreamcast through the DVDO. Component is about 4 frames of lag. The Dreamcast 240p test suite microphone lag test has some room for error, but it consistently reported 66.6ms of lag.

The panel has one great HDMI input, everything else is garbage for gaming.

The Vizio does not support 4:4:4 color. You will probably want to pair the display with an HDMI switcher and some other video processing equipment.

Hope this helps.

My friend picked up the 40" 4k D series for $306 at Target. I currently use the Vizio for my PC monitor and it's excellent l

Sent from my SAMSUNG-SM-G870A using Tapatalk

Hey Bahn, just wanted to say your YouTube video you did playing Chrono Trigger on this display was what me looking into it in the first place. Ended up picking it up yesterday at Best Buy. Getting ready to move soon though so I won't get to try it out until I'm moved into my new place, but I'm excited to add it to my setup!

[Joelepain]

If you're running through a DVDO you don't have to worry about missing 4:4:4 support on the Vizio either, since the DVDO's internal processing is 4:2:2 all the way anyway.

I know it's not really the topic for that, but I was wondering about internal processing subsampling for a long time.
If you take as an example 480p 4:4:4 to 1080p upscaling (typically an OSSC feeding a DVDO or a XRGB-mini).
When you say "x, y, z processor is a 4:2:2 internal processing", does it mean that the 480p 4:4:4 is directly upscaled to 1080p 4:2:2, so chrominance is less upscaled than luminance, but the original information is kept in the process, or does this means that 480p 4:4:4 is firstly downsampled to 480p 4:2:2 and than upscaled to 1080p 4:2:2 ?

[NJRoadfan]

The conversion to 4:2:2 generally happens at the ADC stage. So your video would be digitized as 4:2:2 480p video and then upscaled to 1080p video.

[Joelepain]

And in the case of a digital input, do you know how it works ?
For example Marq's goal with the OSSC was to do a full RGB 4:4:4 processing pipeline, so I suppose it doesn't downsample at its input, otherwise that would be pointless.
So if you send that digitally to a 4:2:2 processor, what does it do with it ?

[Fudoh]

Since 4:2:2 always means YCbCr as well, your luma remains at the input resolution, but the resolution of both color channels is cut into half.

One exception to all that is the Framemeister with 240p input. The initial 240p is doubled by an FPGA first. That's (likely) done in 4:4:4. Only afterwards the color resolution is reduced to 4:2:2.

does this means that 480p 4:4:4 is firstly downsampled to 480p 4:2:2 and than upscaled to 1080p 4:2:2 ?

that's a good example and explains why 480p looks so bad on DVDOs and looks so good on Gennum based processors like the CII (which has a full 4:4:4 processing path).