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DVR software bug

I have experienced the following bug on two different models of CISCO DVRs. My current model is a Explorer 8642HDC. My previous CISCO was a newer model, I cannot remember the name,

 

Scenario: I have a recording that has some kind of error, e.g. a screen glitch or pause.

 

While playing back the recording if I happen to be fast forwarding when the glitch occurs the player jumps out of playback and sets the playback position back at the beginning.

 

This is VERY INCREDIBLY annoying for long recordings like NASCAR if it occurs half way through the race. After this happens you have to forward to just before that location and hopefully press play at just the right moment so that you can play at normal speed through the glitch.

 

Has anyone else experienced this?

 

TWC are you aware of this?

 

Since it occurs on two completely different models of DVR I strongly suspect it is a software bug.

4 REPLIES 4
Expert

: DVR software bug

Is your signal level good on both the DVR and your modem? Anything outside of a -8 to +8 dBmv range on cable IB channels or modem DS channels and higher than +50 dBmv on oob tx/ modem US channels will result in higher error rates and probable loss of error correction. That will result in a corrupted recording as there's no mechanism to repair/ resend lost video packets on SDV/ qam channels.  If a specific channel has a lot of errors (more than one or two a minute) It won't record well but is perfectly watchable.  Since dvr's were designed to run under lab perfect conditions, there is a point where degradation will result in failure. We as users don't know what that point is. This won't get repaired, it's been an issue for years.

 The repair is replacement with a IPTV box and the cloud based DVR, probable available system wide in a year... It's called "Spectrum WorldBox" and is available in some areas now. It too requires clean connections but at least will have full error correction as it uses a docsis 3 16x4 modem.  The world box 201 supposedly has a 1 tb hard drive in it and is being used as a conventional not cloud based recorderand can record up to 6 channels simultaneously (although Spectrum has them limitted to 2 channels)

 

 

Trusted Helper

Re: DVR software bug


@jeffintheusa wrote:

I have experienced the following bug on two different models of CISCO DVRs. My current model is a Explorer 8642HDC. My previous CISCO was a newer model, I cannot remember the name,

 

Scenario: I have a recording that has some kind of error, e.g. a screen glitch or pause.

 

While playing back the recording if I happen to be fast forwarding when the glitch occurs the player jumps out of playback and sets the playback position back at the beginning.

 

This is VERY INCREDIBLY annoying for long recordings like NASCAR if it occurs half way through the race. After this happens you have to forward to just before that location and hopefully press play at just the right moment so that you can play at normal speed through the glitch.

 

Has anyone else experienced this?

 

TWC are you aware of this?

 

Since it occurs on two completely different models of DVR I strongly suspect it is a software bug.


Greetings,

 

I would get a tech out to check your signal levels and drop line just to rule out a signal problem like Ms Raye suggested.  When you set up the service call, please mention this bug and the fact that two different model DVR's have done the same thing.  Avoid resetting your cable box, Internet Modem or router for at least six hours, before the tech comes.  A reset of the equipment will also reset the system error codes to show no errors.  The tech needs to see the error code numbers to determine if this is a signal issue.

 

If your signal levels are good, than I would suggest contacting Spectrum through a PM in this forum.  Say you have had a tech out, and signals are good, but two DVR's of different models show this problem.  Ask that this feedback be reported to the Guide Development Team, and the Spectrum employee will forward that information to them.

 

The World Boxes may not be immune from this bug IF this is a software issue.  I would disagree with Ms. Raye in that regard.  But I agree with her that you should set up a service call for a signal test.  Tune to the channel on which you often watch auto racing so that the tech can take a reading.  Tell the tech that you are not interested in a box swap, because you have done that with different models where the bug is still there.

 

Satch

Expert

Re: DVR software bug

I have no accurate info as to how much of the World box rollout is running IPTV/ cloud record if any...

As far as I know, the ones here in Ohio are using their internal hard drives and recording off the normal encrypted QAM channels. So they would probably have issues with noisy/ intermittent connections as well, since QAM video has no real bidirectional  error correction for lost packets. It just ignores them and iff too many are lost in a row, well the recording is hosed up.

They absolutely aren't running on systems that still have analog channels as bandwidth is at a premium.

 

Re: DVR software bug

Upon further investigation it appears that this is a sign of hard drive failure. Going to the diagnostics page I see hard drive read and write errors.

 

I'm planning to contact Spectrum to have someone come out and investigate.

 

Thank you for the suggestions that were provided.