Frame drops on the latest firmware

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eugene.v

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I read in reviews that the frame skipping issue has been fixed in the latest firmware. I received the device, updated it over the air (when checking for updates, it now says that there is no newer firmware), but there are noticeable frame skips in the video recording (you can watch the video at the link). Transcend High Endurance 256 GB class 10 UHS-I U3 memory card, formatted after installation in the recorder.

Video:
k00.fr

20260105_161012_00115_N_A.MP4

Shared file 20260105_161012_00115_N_A.MP4
k00.fr k00.fr
 
Sorry to hear you’re experiencing this issue.

At the moment, our app is under maintenance, so OTA firmware updates are temporarily disabled.
Could you please let us know the exact firmware version currently installed on your device? If it is not S1PM_VT-EEK241, we recommend downloading the latest firmware directly from our website and updating the camera using the memory card:
www.vantrue.com

Vantrue S1 Pro Max | Product Manuals, Firmware Upgrades, and FAQs

Explore comprehensive product manuals, firmware upgrades, and frequently asked questions (FAQs) for Vantrue S1 Pro Max dash cam. Access detailed instructions, troubleshooting tips, and the latest firmware updates to enhance your experience. Find answers to common queries and optimize your use of...
www.vantrue.com www.vantrue.com

After updating, please test the recording again and let us know if the frame skipping issue persists. We’ll be happy to assist further.
 
I ran some additional checks. If HDR mode is not enabled, there is no frame skipping. If it is enabled, there is frame skipping.
 
eugene.v said:
I ran some additional checks. If HDR mode is not enabled, there is no frame skipping. If it is enabled, there is frame skipping.
Click to expand...
Thanks for sharing the additional details. I’ve sent the video to our team for analysis and will update you as soon as I hear back.
 
Sorry about the trouble, and thank you for sharing the video with us. After reviewing it, we didn’t notice any frame skipping or duplicate frames. If it’s convenient, could you please let us know the specific timestamps where you’re seeing the issue? We’d be happy to take another look and help further.
1767795546023.webp
 
Jeff_Vantrue said:
If it’s convenient, could you please let us know the specific timestamps
Click to expand...
The frame numbers between which the frame disappears (this is clearly visible in the columns on the left side of the video, namely by the distance they shift between frames - between the specified frames, the column shifts twice as much as between the subsequent regular frames). There are many drops, I will indicate a few from the beginning of the video:

61 - 62, 117 - 118, 171 - 172 and so on.

Frame drops are visible even during normal playback - look closely at the columns on the left - they periodically jerk at the moment of a frame drop.
 
Sorry for the delay in getting back to you. Our technical team has reviewed the video multiple times, but we still haven’t been able to find the issue you mentioned.
Would you mind if we discuss this directly over the phone to make sure we fully understand your concern? If that’s okay, please send us your phone number via private message, and we can arrange a convenient time to call.
Thank you for your patience!
eugene.v said:
Hello. Have you analysed the video? I would like to use HDR mode without any glitches.
Click to expand...
 
Jeff_Vantrue said:
understand your concern
Click to expand...
Please take a closer look. I took frames from video numbers 60, 61, 62, and 63, i.e. four frames in a row, and superimposed them on top of each other, setting transparency. In this composite photo, you can clearly see that there is a frame gap — the distance between the posts on the left side of the video in the adjacent frames has a clear gap — I marked this area in red in the second image. Such gaps occur throughout the video. In my previous message, I indicated between which frames they occur. And when watching, you can clearly see how there is a jerk approximately every second if you look at smoothly moving objects.
 

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eugene.v said:
Please take a closer look. I took frames from video numbers 60, 61, 62, and 63, i.e. four frames in a row, and superimposed them on top of each other, setting transparency. In this composite photo, you can clearly see that there is a frame gap — the distance between the posts on the left side of the video in the adjacent frames has a clear gap — I marked this area in red in the second image. Such gaps occur throughout the video. In my previous message, I indicated between which frames they occur. And when watching, you can clearly see how there is a jerk approximately every second if you look at smoothly moving objects.
Click to expand...
Thank you for the detailed explanation and the frame-by-frame comparison.
After review with our technical team, this behavior is related to HDR ghosting, rather than actual dropped frames. HDR multi-exposure processing can introduce visible motion offsets, which may appear as gaps when frames are overlaid and can look like periodic jerks during playback.
This effect can also appear more noticeable in certain media players. You may want to compare playback using Vantrue Player or PotPlayer.
 
Jeff_Vantrue said:
This effect can also appear more noticeable in certain media players.
Click to expand...
Hello. I have tried a wide variety of video players, both on my smartphone and on my PC - Windows Media Player, VLC Player, MPC Player, PotPlayer, etc. - and this effect is very noticeable when playing videos on all of them.

And why do you call it HDR ghosting when I clearly showed you the periodic absence of intermediate frames, rather than their blurring, which is characteristic of ghosting?

Cameras from other manufacturers (both video recorders and smartphones) are free from this defect when recording HDR video.
 
eugene.v said:
Hello. I have tried a wide variety of video players, both on my smartphone and on my PC - Windows Media Player, VLC Player, MPC Player, PotPlayer, etc. - and this effect is very noticeable when playing videos on all of them.

And why do you call it HDR ghosting when I clearly showed you the periodic absence of intermediate frames, rather than their blurring, which is characteristic of ghosting?

Cameras from other manufacturers (both video recorders and smartphones) are free from this defect when recording HDR video.
Click to expand...
We’re sorry for the confusion. What you’re seeing is actually due to variable frame timing. Between some frames, the intervals are slightly inconsistent because the system timer can’t perfectly match the video frame rate. This causes a few milliseconds of difference between frames. We’re working on a fix and will keep you updated.
 
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