4K ATSC 3.0 stream from HDHomeRun Flex 4K playing at 1080p, not 4K

[DamnedUndies 17]

I have an HDHomeRun Flex 4K receiving an ATSC 3.0 signal, but it maxes out at 1080p on my TCL Roku 4K TV.

Running Emby Server on Linux with the transcoding H.265 HEVC decoder set to VAAPI as per the screenshot below (when I try QuickSync, the stream hangs at 26%).

Looking at the ffmpeg log, perhaps there's an issue with the ffmpeg decoder.

Any idea why I'm not getting the 4K stream?

 

ffmpeg-remux-7b90fc8b-b979-4b08-a3ad-a1b544fd1913_1.txt

[GrimReaper 3301]

Are you sure you're getting that channel in 4K? As per your remux log, there's no transcoding occurring, only audio gets converted, source video is 1080p.

TranscodeReasons=ContainerNotSupported

{"Codec":"hevc","ColorTransfer":"bt709","ColorPrimaries":"bt709","ColorSpace":"bt709","StreamStartTimeTicks":495382838780,"TimeBase":"1/90000","VideoRange":"SDR","DisplayTitle":"1080p HEVC","IsInterlaced":false,"BitRate":20000000,"BitDepth":10,"RefFrames":1,"IsDefault":false,"IsForced":false,"Height":1080,"Width":1920,"AverageFrameRate":59.94006,"RealFrameRate":59.94006,"Profile":"Main 10","Type":"Video","AspectRatio":"16:9","Index":0,"IsExternal":false,"IsTextSubtitleStream":false,"SupportsExternalStream":false,"Protocol":"File","PixelFormat":"yuv420p10le","Level":123,"IsAnamorphic":false}
{"Codec":"ac4","CodecTag":"AC-4","Language":"spa","StreamStartTimeTicks":495387510220,"TimeBase":"1/90000","DisplayTitle":"Spanish AC4 stereo","DisplayLanguage":"Spanish","IsInterlaced":false,"ChannelLayout":"stereo","Channels":2,"SampleRate":46034,"IsDefault":false,"IsForced":false,"Type":"Audio","Index":1,"IsExternal":false,"IsTextSubtitleStream":false,"SupportsExternalStream":false,"Protocol":"File"}

11:11:35.817   Stream #0:0[0x31]: Video: hevc (Main 10) ([36][0][0][0] / 0x0024), yuv420p10le(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], Closed Captions, Level 123, 59.94 fps, 59.94 tbr, 90k tbn, Start-Time 49551.447s
11:11:35.817   Stream #0:1[0x32](spa): Audio: ac4 (AC-4 / 0x342D4341), 46034 Hz, stereo, fltp, Start-Time 49551.897s
11:11:35.827 Stream mapping:
11:11:35.827   Stream #0:0 -> #0:0 (copy)
11:11:35.827   Stream #0:1 -> #0:1 (ac4 (native) -> aac (native))

 

[DamnedUndies 17]

5 minutes ago, GrimReaper said:

Are you sure you're getting that channel in 4K? As per your remux log, there's no transcoding occurring, only audio gets converted, source video is 1080p.

TranscodeReasons=ContainerNotSupported

{"Codec":"hevc","ColorTransfer":"bt709","ColorPrimaries":"bt709","ColorSpace":"bt709","StreamStartTimeTicks":495382838780,"TimeBase":"1/90000","VideoRange":"SDR","DisplayTitle":"1080p HEVC","IsInterlaced":false,"BitRate":20000000,"BitDepth":10,"RefFrames":1,"IsDefault":false,"IsForced":false,"Height":1080,"Width":1920,"AverageFrameRate":59.94006,"RealFrameRate":59.94006,"Profile":"Main 10","Type":"Video","AspectRatio":"16:9","Index":0,"IsExternal":false,"IsTextSubtitleStream":false,"SupportsExternalStream":false,"Protocol":"File","PixelFormat":"yuv420p10le","Level":123,"IsAnamorphic":false}
{"Codec":"ac4","CodecTag":"AC-4","Language":"spa","StreamStartTimeTicks":495387510220,"TimeBase":"1/90000","DisplayTitle":"Spanish AC4 stereo","DisplayLanguage":"Spanish","IsInterlaced":false,"ChannelLayout":"stereo","Channels":2,"SampleRate":46034,"IsDefault":false,"IsForced":false,"Type":"Audio","Index":1,"IsExternal":false,"IsTextSubtitleStream":false,"SupportsExternalStream":false,"Protocol":"File"}

11:11:35.817   Stream #0:0[0x31]: Video: hevc (Main 10) ([36][0][0][0] / 0x0024), yuv420p10le(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], Closed Captions, Level 123, 59.94 fps, 59.94 tbr, 90k tbn, Start-Time 49551.447s
11:11:35.817   Stream #0:1[0x32](spa): Audio: ac4 (AC-4 / 0x342D4341), 46034 Hz, stereo, fltp, Start-Time 49551.897s
11:11:35.827 Stream mapping:
11:11:35.827   Stream #0:0 -> #0:0 (copy)
11:11:35.827   Stream #0:1 -> #0:1 (ac4 (native) -> aac (native))

 

According to what the HDHR web interface is telling me in that screenshot, it's an ATSC3.0 signal.

Any other method I can use to definitively tell me if I'm getting a 4K signal?

[GrimReaper 3301]

Just now, DamnedUndies said:

According to what the HDHR web interface is telling me in that screenshot, it's an ATSC3.0 signal.

ATSC3.0 is a standard, not resolution - meaning it is not necessarily 4K, as it offers support for UP TO 4K/120 and three video formats: legacy SD, interlaced HD and progressive video up to 4K. Maybe that particular channel transmits in HD only. 

[DamnedUndies 17]

2 minutes ago, GrimReaper said:

ATSC3.0 is a standard, not resolution - meaning it is not necessarily 4K, as it offers support for UP TO 4K/120 and three video formats: legacy SD, interlaced HD and progressive video up to 4K. Maybe that particular channel transmits in HD only. 

Got it.  HDHR is telling me I get the following channels in HEVC, and none of them are streaming at 4K unfortunately.

These channels, according to the respective websites and info I've found on the web, are transmitted with 4K resolution, so clearly I am missing something here...

Wondering if you know of any tools I can use to definitively tell me what my input signal resolution is that the HDHR sees?

[GrimReaper 3301]

6 minutes ago, DamnedUndies said:

HDHR is telling me I get the following channels in HEVC

Which is what your log is showing also, just not at the resolution you're expecting:

"DisplayTitle":"1080p HEVC","Height":1080,"Width":1920

 

7 minutes ago, DamnedUndies said:

Wondering if you know of any tools I can use to definitively tell me what my input signal resolution is that the HDHR sees?

Unfortunately not, never had the need to delve into that, maybe @softworkz or @cayars will have some tip.

[tmm1 4]

There are no 4K broadcasts in the US.

[DamnedUndies 17]

Spoiler

I stand corrected.  As mentioned, no 4K OTA broadcasts... yet.

Thanks for the responses.

 

 

[Carlo 4330]

There are some stations in Cleaveland, Chicago and Phoenix that do 4K broadcasts.

Some other markets are doing trial tests.

Check and see how the Superbowl is broadcast in your area.

[tmm1 4]

Source?

[emveepee 112]

Everything I have read says the 4k Super Bowl will be only cable and streaming  services.  Even then it might only be upscaled 1080p since they might not be using 4k cameras.

It might be an interesting test for the Silicon Dust transcoding streamer more than 4k, although Emby users won't see this.

Martin

[Trapperjohn61 9]

43 minutes ago, emveepee said:

Everything I have read says the 4k Super Bowl will be only cable and streaming  services.  Even then it might only be upscaled 1080p since they might not be using 4k cameras.

It might be an interesting test for the Silicon Dust transcoding streamer more than 4k, although Emby users won't see this.

Martin

Hi,

   There are cable companies that are showing media in 4k?

I always thought the highest they go is 1080 and to get 4k you need to stream..

Has this changed?

 

Thanks,

Bryan

[tmm1 4]

Verizon FIOS offers 4K streams (for certain events) which are available via the HDHomeRun PRIME. However they are typically HLG not HDR10.

[emveepee 112]

I am not in the US,  but I got a sample from the NBC Olympics in 4K from a Prime user.

Input #0, mpegts, from 'nbc-olympics-nextpvr.ts':
  Duration: 00:02:01.97, start: 2079.080956, bitrate: 18934 kb/s
  Program 181
  Stream #0:0[0x713]: Video: hevc (Main 10) (DOVI / 0x49564F44), yuv420p10le(tv, bt2020nc/bt2020/smpte2084), 3840x2160 [SAR 1:1 DAR 16:9], Closed Captions, 59.94 fps, 59.94 tbr, 90k tbn
    Side data:
      DOVI configuration record: version: 1.0, profile: 8, level: 9, rpu flag: 1, el flag: 0, bl flag: 1, compatibility id: 1
  Stream #0:1[0x714](eng): Audio: eac3 ([135][0][0][0] / 0x0087), 48000 Hz, 5.1(side), fltp, 640 kb/s
  Stream #0:2[0x715](eng): Audio: eac3 ([135][0][0][0] / 0x0087), 48000 Hz, stereo, fltp, 96 kb/s (visual impaired) (descriptions)

]

Edited January 29, 2023 by emveepee