ATSC3.0 Broadcast and AC-4 Sound

As I stated above:

There isn’t really anything more I can contribute here.

I appreciate everyone’s offer to provide source streams for Engineering.
I will forward that to them on Monday.

I hope all will forgive me, but I do need to finish my Synology DSM 7 packaging work.
I have a whole new set of documentation to write before it is pushed to formal “Beta” status.

20 here:)

Interesting. Does HDHR config_GUI report the same number for that channel when it is tuned? Possible that UI is misrepresenting the actual average bitrate. If it is correct, how many other stations is on that physical channel?

I’ll have to try to figure out how to use the HD home run app. But it’s only two channels that get that bit rate (fox & abc) the other ones are less.

If you’ve installed the latest software: https://download.silicondust.com/hdhomerun/hdhomerun_windows_beta.exe
You want to use HDHomerun Setup app, that should be in your start menu, to see the physical channel that the virtual channels are on. That will tell you how many are taking up bandwidth from the channel. (We have one with 3 at 720,1080i,1080i and one with 4 at 1080p, 1080p(?), 720p, 720p)
Then you want to use the config_gui in the HDHR folder to see the bitrate. Quickest way to see this is to play the channel with the HDHR player, select Tuner 0 in the config_gui and you should see the bitrate it is streaming at.
“C:\Program Files\Silicondust\HDHomeRun\hdhomerun_config_gui.exe”

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What’s the status of AC4 support? Seems there is a ffmpeg branch that supports it. Is everyone waiting for everyone else to make a move?

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I’m just keeping this closing. Is there any way to use the current beta?

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Is there a solution I don’t know about that everyone went silent? My channels are terrible on ATSC 1, but clean on ATSC 3, and my only DVR solution for OTA is Plex, so I can’t time-shift any shows that now look great live until this is resolved. Patiently waiting for a solution.

No solution. If you are interested in the drama: #8349 (Dolby AC-4 Support) – FFmpeg

No drama there, unfortunately, as nothing has changed for months. The only recent communications is just ferrellsl’s effort to hack richardpl’s code into a player.
That effort isn’t relevant for ffmpeg so it isn’t relevant for Plex.

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I’d love to see Plex support ATSC 3.0. I understand that ffmpeg doesn’t support AC-4, however FFmpeg is an open source program. It would be nice to see maybe Plex develop the support and submit the patches to be included into the ffmpeg project. Or develop AC-4 support for Plex’s fork of ffmpeg.

ATSC 3.0 is the future anyway. So either the future of the DVR is dead, or eventually this has to be completed. This is one of the few DVR features I would actually like to see added. If there is an ATSC 3.0 slush fund I would contribute if need be.

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Will there be any response, or post by PLEX admins on getting this function working correctly? I too also have the new HDHomeRun 4K tuner. I supported it and got a early model off of Kickstarter. Plex can see the channels, but it has no audio, or the image is stretched out weird. In Ohio at least.

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Keeping this alive. I’m also looking at the HDHR Flex 4k and wanting to add it to my plex server.

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I bought a lifetime PlexPass because I trusted that Plex would continue to maintain the product. It’s outrageous that Plex isn’t supporting ATSC 3.0.

I found a bounty on adding AC-4 support to FFMPEG.
Perhaps Plex and/or the community can pledge some coin.

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Come on guys, get ATSC3.0 working please. More and more customers are gaining access to it. I can’t imagine not getting in front of this or even having an announced roadmap for it’s development

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I realize that Plex currently is not capable of decoding AC-4 audio, but is there anyway for Plex to record the transport stream and just store the AC-4 audio, even though it can’t actually play the audio? I am hoping to later transcode these transport streams when software is available to do so.

In my area, our first ATSC 3.0 lighthouse station went live on June 15. Initially, all but one of the streams were using AC-3 audio. This allowed me to record the HEVC, 1080p60 content with AC-3 audio for all but one of the streams. One thing that I noticed in that process though is that Commercial Skip functionality did not work. Does the ComSkip functionality only work with MPEG-2? At the moment, it is a moot point, as all of the streams that were initially in AC-3 have converted to AC-4.

While not Plex related, I’m starting to play with the SiliconDust DVR software, with multiple recordings to be made in the next few hours. I’d rather be able to do this with Plex, as all of my other television and movie content is on Plex, but I’m also wishing to take advantage of ATSC 3.0.

All content in my city are now broadcasting AC-4 and Plex cannot decode any of them. Plex needs to get this done ASAP.

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My city just started broadcasting a bunch of channels in ATSC 3 but I can’t watch them. Plus one to add this feature please.

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Little Rock just went live. No Audio on plex. I do have audio on the HDHomeRun app. Why cant PLEX just pass the video and audio through without messing with it? My Shield or AVR decode it. Is there a way to set Plex to just record without messing with the file?