Channel Master DVRs For OTA - Page 37 - Canadian TV, Computing and Home Theatre Forums

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post #541 of 896 (permalink) Old 2012-02-21, 02:42 PM
 
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Brownriggd

What Jase88 says is correct. The CM7000 is very sensitive to dropouts when recording. But...

I noticed this last night on several recordings made yesterday. Play mode was fine - no dropouts - but fast forward/reverse kept freezing and the commercial skip was acting up. Pausing and/or restarting the file did not help. I did a Reset/Reboot and that seemed to fix the problem.

If you're seeing this problem on most recordings over several days, and your signal is not generally crap, you might try reinitializing the device so the firmware loads from scratch.

One big caveat: This was on a CM7400, not the CM7000PAL. Completely different manufacturer and firmware, but it can't hurt to try.
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post #542 of 896 (permalink) Old 2012-02-21, 03:12 PM
 
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I was thinking of doing a complete system reset to see if this helps. In response to Jase88 I'm not seeing any signal dropout or delay (at least visible to the naked eye) during these defective recordings. Just a jerkiness....for example as a car passes by the camera there's a noticeable hesitation or slight pause in the flow like its missing a frame or two....

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post #543 of 896 (permalink) Old 2012-02-21, 07:46 PM
 
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It an update - after getting home, checked my 7000PAL, and after the factory reset last night and an overnight wait, TVGOS is now populated again. So, big thanks to all who helped out!
k.
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post #544 of 896 (permalink) Old 2012-02-21, 11:00 PM
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brownriggd, that's a different issue than what I thought. Are you sure this isn't how the video is coming into the dvr?!

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post #545 of 896 (permalink) Old 2012-02-22, 08:05 AM
 
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quote: 'brownriggd, that's a different issue than what I thought. Are you sure this isn't how the video is coming into the dvr?!'

I was wondering the same thing. Will OTA broadcasts do this? So far I've only noticed it on CityTV and Global recorded broadcasts here in the Ottawa area. Has anyone else notice this issue?

Dave B Sony 4k XBRX55900A, ShawDirect HDPVR,
ChannelMaster HDPVR, Oppo BDP103 Onkyo TX-SR605 AVR
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post #546 of 896 (permalink) Old 2012-02-22, 08:12 AM
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^^^^ CBC is progressive, ie: 720p. You might want to try recording something from there if signal permits.

Can't speak for the Ottawa setups, but via Toronto, CBC and others record here OK, although the motion on CBC is better. Just running into a bizarre issue of recordings not always starting with the PC based 950Q, but that's another issue...

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post #547 of 896 (permalink) Old 2012-02-22, 08:36 AM
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Quote:
Originally Posted by brownriggd View Post
So far I've only noticed it on CityTV and Global recorded broadcasts here in the Ottawa area. Has anyone else notice this issue?
I haven't noticed this problem with either of those stations, but I am not using a CM7000PAL. It could be a signal strength issue as those are likely your weakest stations.

Link to my TVFool results is in my profile Homepage URL. I suggest others do the same.
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post #548 of 896 (permalink) Old 2012-02-22, 08:51 AM
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I've seen the issue that brownriggd mentions. As he says, it's particularly noticeable on motion shots, especially where the shot is panning. Rather than fluid motion, there's a consistent slight hesitation. Like every other frame is missing in the shot. I've always attributed this to a "digital effect". But now that we're discussing it, I do wonder if this issue is caused by the DVR.

Most of my TV viewing is on the DVR. Over the next few days, I'll view on my TV's tuner to see if the issue presents there as well.

If it turns out to be an issue specific to the CM7000Pal, this could be another reason to avoid this product. Particularly if such transient viewing issues are found to be troublesome. Again, the effect is subtle, but certainly noticeable.

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post #549 of 896 (permalink) Old 2012-02-22, 02:36 PM
 
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Brownriggd - cabling issue?

Could it be an HDMI problem, perhaps in conjunction with weaker signals? You might try switching from HDMI to Component (or vice versa).
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post #550 of 896 (permalink) Old 2012-02-23, 08:55 AM
 
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CMPAL7000 Recording Jerkiness

Unfortunately my TV only accepts component via an adapter plug (breakout cable) which, trust me, produces worse image quality.

I haven't seen this issue on other channel recordings, i.e. CBC and TVO which are by far the strongest signals (in 90 to 100 strength range). Yes, CityTV and Global (particularly Global) are my weaker signals (sometimes in the 60 to 80 ranges).

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ChannelMaster HDPVR, Oppo BDP103 Onkyo TX-SR605 AVR
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post #551 of 896 (permalink) Old 2012-02-23, 09:10 AM
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I've done some testing in the past 24 hours, and haven't been able to replicate the issue. Including "stressing" the DVR by recording two programs at once, while viewing a third recorded program. Checking the recordings didn't reveal the issue. I'll keep testing...

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post #552 of 896 (permalink) Old 2012-02-26, 08:40 PM
 
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Jase88 - in your previous post you mentioned maybe avoiding 'this product.' Is there a recommended DVR like Stampeder's antenna list?
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post #553 of 896 (permalink) Old 2012-02-26, 10:00 PM
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I've only used this particular DVR (7000PAL) with OTA.

Don't get me wrong; I like my 7000PAL. It could just be so much better if Channel Master supported it with software updates. And didn't ignore their Canadian and international customers by limiting TVGOS support to US zip codes only.

If I had the discretionary cash, I'd test out other DVR manufacturers for OTA. However, my thinking is that an HTPC is likely to be my next step.

Though if you're looking for a standalone DVR, I would read through the various threads here pertaining to different manufacturers to get the feedback of others.

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post #554 of 896 (permalink) Old 2012-03-07, 12:03 PM
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CM7000Pal DST Weirdness

DST goes into effect this coming weekend, and being within 7 days of the change, I'm starting to see problems with some recordings.

And I believe I've figured out the issue. And more importantly, how to work around it.

The issue is that I tend to see some of my repeat programs (those set for daily or weekly recording) record an hour off (forward or backward, depending on spring or fall).

Apparently the DVR is capable of determining that a time change is imminent; likely from info it receives from TVGOS. But the device is incapable of applying that "awareness" to repeating programs where recording times are scheduled preceding the actual time change.

Therefore, for the full 7 days leading up to a DST change, I find that I need to set events to record individually.

Note that this issue only presents for channels which are populated in the guide by TVGOS.

For example, CBC Toronto, (which sends out a full week of guide data via PSIP) doesn't appear to have this issue. Nor do I see the issue with Global or other Canadian stations (except CFTO).

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post #555 of 896 (permalink) Old 2012-03-07, 12:12 PM
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Jase88, it may well be that once the time actually changes, everything will be fixed and everything will record properly, but a s/w bug makes it look like things won't work. Only time will tell.

Link to my TVFool results is in my profile Homepage URL. I suggest others do the same.
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