Hello again
I assure you I’m a very real person. Unless I’m a robot that is self unaware.
Believe it or not I HAVE looked at the support articles that have been provided to me. I’m replying now via my computer. I’m thinking perhaps I’ve not communicated clearly because before I was simply using my phone and that doesn’t lend itself to being very verbose with thoughts and suchlike.
So for starters, I’m going to just outline what I’ve seen and have been facing.
I have multiple TVs, each equipped with a Roku device. Generally, the small Rokus that stick near the TV and connect to the TVs via HDMI. I also have an outdoor mounted TV antenna. The coax runs from the roof to an amplified splitter. Then from the splitter to each TV. So far things are great. No issues and I watch OTA TV on each TV as needed and Roku when I want to stream. All Roku devices are connected via wifi.
I see ads for this Tablo thing. So I purchase it and connect it up. 4th gen 2 tuner. I run a coax from one of the four antenna splitter outputs to the Tablo devce. (Tablo is mounted right next to the splitter. I also connect a CAT5 network cable from the Tablo to my router. And that’s just a couple of feet away.
I simply configure any of the TVs to watch OTA when I want to watch OTA live, I don’t use the Tablo for tuning into anything other than what I wish to record. I never use it to watch live TV.
Early on I was simply recording a couple of things. Never two channels at the same time and I always played back the next day. I never saw an issue. Then as I became more familiar with the device, I configured a recording using both tuners simultaneously. (two late night shows) And the next morning, I played back and one of the simultaneous recordings was breaking up really bad when playing it from the Tablo. So I came here to the forum in search of answers. It seemed to me that since it was the first time I set things up where two programs were being simultaneously recorded, one of the tuners was possibly bad. But during this process I noticed that after a while, the recording that was breaking up before simply began playing just dandy. Nice and clear.
Someone here (possibly you?) pointed me to a support article that discussed how Tablo worked. That when no hard drive was present, after a recording ended, the Tablo performed a transcoding process. And that seemed to explain what I was seeing. The pixelation and freezing performed a complete disappearing act after I waited. Presumably the process of transcoding from the “raw” MPEG2 recording format to MPEG4 cleared it up. So far so good.
Then I attempted to watch a recorded show very soon after a recording stopped. And again, things were awful in playback. And again, someone here suggested that I consider adding an external hard drive. Presumably the thought was that since no transcoding had to occur, what I would see would be good.
Soooo, I begin investigating hard drives. And again, someone here pointed me to an article that mentioned that somebody should create a thread listing hard drive models that work fine with Tablo and models that fail. Unfortunately, the link I saw turned out to be 404. I figured that if I used an SSD it might be optimal, as those are supposed to be both super fast as well as the older drives are spinning. But in the end, I chose an inexpensive spinning hard drive.
As for size recommendations, I’m more than happy with what Tablo has in the unit with no hard drive present. Which I understand is 128 gigs. Since that seems perfectly adequate for my purposes, a 250 gig drive seems more than adequate, Hence I fail to understand Tablo’s suggestion of a larger capacity hard drive. I mean, I could understand it if the external drive recordings were also being transcoded.
So my own understanding based on the recommended articles is this: According to https://us-store.tablotv.com/products/tablo:
Note that those brief specs make no mention of a recommended drive size. Only that "up to 8TB in size. (and yes, I realize a support article may mention a minimum)
As my Roku seems to play Tablo recordings fine as long as I don’t have a hard drive connected and I wait to ensure the transcoding is complete, and watching a recording too soon (before transcoding is completed) results in pixelation, it seems reasonable to me to assume the issue is the recording format. Which according to Tablo in the screen shot above is MPEG2. I’m fully aware that no transcoding is occurring when a hard drive is involved.
Before I posted this I performed a small test. Most of what I watch is on my bedroom TV. So I recorded a brief program (with hard drive connected). Perhaps it does have something to do with the Roku devices. All are reasonably new, but I did acquire them at different times. All nearly the same model. However, all the Rokus I have function just fine for everything I watch. Netflix, Hulu, AppleTV+, Discovery+, HBO Max, FreeVee, Tubi, and many others. Of the three devices, the oldest seems to be the only one that will play recordings just fine from the hard drive. The other two are awful. Yet they are just fine when no hard drive is involved and I’m careful to wait for transcoding to complete.
Am I correct in assuming you are simply another very helpful user here? Does Tablo support look at these threads? If not, how do I actually file a report with support? I think my case might be an interesting one for Tablo support to look at. Especially given the prevalence of Roku devices in use. I did try uninstalling the Tablo app from the Roku and reinstalling. But it made no difference. I’d be flabbergasted to learn that my situation is unique.
I do apologize for being unclear earlier. Sorry too that I have a life beyond the forum and aren’t just watching it continuously with bated breath.