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Poor playback performance on PC Viewer (Windows)

When playing back files saved from my camera i'm having issues with poor playback performance.

I read this post in regards to USB3 but as i'm copying the files to local storage this doesn't really help. 

I like how the player pairs up the files from the front and rear cameras automatically, and playback has PiP showing both cameras, however, playback performance is still very poor.  Sound plays at normal speed but both video streams lag behind.  The two video streams aren't even in sync with each other.  The smaller playback window lags about 5 seconds (by the end of the minute) behind the sound and the larger playback is about another 10 seconds behind that.

System spec is NOT the issue.  Storage is an Intel eSATA 400Gb, Intel X5760 processor @4.5GHz with 32GB DDR4 and a Nvidia GTX980 (latest drivers) on Windows 10

Cam is a DR750 2ch.

Anyone else having similar issues?  Any tips on improving performance?

 

13 comments

  • 0
    Avatar
    Noman

    Dear Customer

     Thank you for choosing blackvue and our apologies for the inconvenience.

     Can you please tell us what version of the PC viewer are you using? Moreover have you tried to play the files on another PC and checked if the issue persists?

    Please run the PC viewer as an administrator , then right click the PC viewer icon > Open files> and send us the trace files at cs@pittasoft.com for further investigation.

     

     

  • 0
    Avatar
    Paul Ellis

    Hi Norman,

    Sorry about the delay.  

    PC Viewer version is 1.13, which I believe is the current version.

    Running as administrator makes no difference.

    The only other PC I have available is my laptop, which is very low spec and struggles with most things so the issue is far worse.

     

    Any other suggestions?

  • 0
    Avatar
    Noman

    Hello Paul

     Have you tried playing the files on another media player, VLC or windows media to check if the video is lagging there too or it,s just the blackvue player. If possible can you please upload the files on an online server like dropbox, google drive and share the link with us so that we can check if there is an issue with the files.

     

    Thank you 

  • 0
    Avatar
    Paul Ellis

    Hi Norman,

    Playback in a media player like VLC is fine.  I can also load the files in an editor like Filmora and manipulate them fine.  It's just the BlackVue player that seems to have the issue.

    I'll upload a file to dropbox and post the link here once I get home from work.

    Cheers,

    Paul

  • 0
    Avatar
    Paul Ellis

    Hi Norman,

    A couple of files from my camera.

    Front: https://www.dropbox.com/s/08tej1ishw7r5be/20171218_173524_NF.mp4?dl=0

    Rear: https://www.dropbox.com/s/d61pugcn2q7jitc/20171218_173524_NR.mp4?dl=0

    I will see if I can record a screen capture of the BlackVue player to help explain the problem.

    When I start the playback, everything is in sync to begin with.  The sound proceeds at normal pace, the rear camera video is a little slower and the front camera is even slower again.  So it appears as though the sound plays out in 60 seconds, the rear video stream takes about a minute and a half, and the front stream takes about 2 minutes.

    Cheers,

    Paul.

  • 0
    Avatar
    Paul Ellis

    Hi Norman,

    I'll have to try the screen capture at home on my PC.  My laptop is so not up to the task of video capture.

    Cheers,

    Paul.

  • 0
    Avatar
    Noman

    Hello Paul

     Thank you for sharing the videos. I have played them on the Blackvue PC viewer in my PC and they are synced with the voice. Can you please download the blackvue legacy player from the link below and see if it plays well on that? Please send a screen capture, that would help.

    https://www.blackvue.com/download/blackvue-pc-viewer/ 

     

    Thank you 

  • 0
    Avatar
    Paul Ellis

    Hi Noman,

    Here is the screen capture: https://www.dropbox.com/s/obze16o7nqkz6w1/BlackVueSD%2020_12_2017%203_52_00%20PM.mp4?dl=0

    The rear camera didn't seem to come out on the capture.  You can see my mouse pointer circle where the rear camera stream was supposed to be.  I was trying to highlight the difference in the time indexes on the two video streams.  This could be a limitation in the Windows 10 built in capture software.  However you can see that the front camera stream lags behind the sound.  I's like the front camera stream is playing at half speed (perhaps as it is recorded at 60fps? - See theory below)

    I'll try the legacy player as soon as I get a chance.

    The video mode I run (as I have a 43" UHD 4K display) is 3840x2160x30Hz.  Could this be causing a problem as my refresh rate is half the frame rate of the recorded video?  I know that a refresh rate of 30Hz is low but I think it's a limitation of my video card when displaying 4K.  I will attempt it again at a lower resolution and higher refresh to see if the problem disappears.

    Thanks,

    Paul.

  • 0
    Avatar
    Paul Ellis

    Hi Noman,

    I tested the BlackVue player at a resolution with a refresh of 60Hz with no luck.  That doesn't seem to be it.

    I loaded the original files into the legacy player and playback seems fine.

    I'll work on getting a better capture.

    Let me know if there's anything else you want me to try.

    Cheers,

    Paul.

  • 0
    Avatar
    Paul Ellis

    Hi Noman,

    Here is a video capture showing both front and rear video streams. The sound is in sync with the rear stream, but the front stream plays at about half speed.

    https://www.dropbox.com/s/l4e39qw7ogj7pfd/2017-12-21%2006-14-41.flv?dl=0

    Cheers,

    Paul.

  • 0
    Avatar
    Noman

    Hello Paul

     Since the files are playing fine in legacy viewer and other media players, there seems to be a compatibility issue with the viewer version 1.13 and your computer.

      We need the following viewer files to investigate more into this problem and find a possible solution.

    trace and traced_sd

    To get those files, please right click on the viewer icon on your desktop and click on open file location. You will see those files at the bottom. Please send them to cs@pittasoft.com

    Thank you 

     

  • 0
    Avatar
    Paul Ellis

    Hi Noman,

    trace.txt does not exist in my directory and trace_sd.txt is a zero length file.  There is a trace_cld.txt with some content.  

    Do I need to do something to enable output to these files?

    Cheers,

    Paul

     

  • 0
    Avatar
    Noman

    Hello Paul

     You need to run the PC viewer as an administrator in order to produce the files. Please right click on the viewer and click "Run as Administrator". After that look into the folder and you will see the files.

      Let me know if you are still unable to see them.

     

    Thank you 

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