gabilondo77
Active Member
- Joined
- Jun 29, 2019
- Messages
- 283
- Reaction score
- 222
- Location
- Torrevieja
- Country
- Spain
- Dash Cam
- Viofo A129 Duo,Viofo A129 Pro Duo 4K
I will test it next weekend if you provide a link.
A129 Duo frame doubling occurs with all firmware since day 1. Once the rear camera is disconnected frame doubling disappears using any firmware version. During video frame testing always disable WDR which combines video frames and disable Parking Mode.
Back in the old days @gse posted long ago about Frames per second - FPS and chipsets. He correctly identified a slight video frame issue that could explain a possible cause of the video frame doubling. I don't have the old thread link but someone discovered a timing issue similar to Front camera = 30fps and REAR = 29.9fps and approx. every 90 frames frames doubled to match 30fps. My opinion is the A129 Novatek NT96663 chipset just cannot handle two 1080p 30fps streams without doubling/overlap.Exactly! I have tested till now,every firmware starting with v1.3.And yes with the rear camera disconnected,all problems disappear and front camera records smoothly,beautiful quality at 60fps.In my tests WDR,Parking Mode and all unnecessary things are disabled,I even tried with GPS off...makes no difference.
The A129 Duo will remain the Best 1080p resolution low power, low heat, dual camera system compared to the new A129 Pro 4K resolution with higher power drain, higher heat chipset and sensor.And you're telling us this info 1 month after we bought the A129?
I still hope there is a elegant software fix for it.
Back in the old days @gse posted long ago about Frames per second - FPS and chipsets. He correctly identified a slight video frame issue that could explain a possible cause of the video frame doubling. I don't have the old thread link but someone discovered a timing issue similar to Front camera = 30fps and REAR = 29.9fps and approx. every 90 frames frames doubled to match 30fps. My opinion is the A129 Novatek NT96663 chipset just cannot handle two 1080p 30fps streams without doubling/overlap.
None of this matters now that A129 Pro Duo 4K is near and everyone Upgrades, according to the "Pro" Alpha/Beta testers there is zero frame doubling from rear camera footage using more powerful chipset.
Back in the old days @gse posted long ago about Frames per second - FPS and chipsets. He correctly identified a slight video frame issue that could explain a possible cause of the video frame doubling. I don't have the old thread link but someone discovered a timing issue similar to Front camera = 30fps and REAR = 29.9fps and approx. every 90 frames frames doubled to match 30fps. My opinion is the A129 Novatek NT96663 chipset just cannot handle two 1080p 30fps streams without doubling/overlap.
None of this matters now that A129 Pro Duo 4K is near and everyone Upgrades, according to the "Pro" Alpha/Beta testers there is zero frame doubling from rear camera footage using more powerful chipset.
@HonestReview ,what I really don't understand is why the Street Guardian SG9663DC dual camera wich have the same chipset as Viofo A129 doesn't have this problem..Well I know it's a more expensive camera,but it have exactly the same chipset and sensor..How they managed to make it work so smooth?
Here you have a YT link where you can see some footages,look at 6min45sec on that bridge,it's impressive:
Have you tried emailing Bill at viofo?
No I didn't,I assume they are busy with the new A129 Pro.
it is possible to adjust thisIf the Street guardian uses identical hardware, then maybe the framerate could be adjusted int he Viofo to eliminate the dupe frames.
it is possible to adjust this