Search found 19 matches

by TBR
Wed Jun 30, 2021 11:18 am
Forum: ATSC 3.0 Forum
Topic: AC-4 Audio?
Replies: 322
Views: 60720

Re: AC-4 Audio?

I am not getting audio on my computer or cell phone, or laptop. With all the open source free codecs, I am wondering who was the bright individual who decided to use a codec no one has, or can get, for a system designed for poor and rural folks without any other options to watch TV. Dolby put up $$...
by TBR
Sun May 30, 2021 3:59 pm
Forum: ATSC 3.0 Forum
Topic: AC-4 Audio?
Replies: 322
Views: 60720

Re: AC-4 Audio?

Has anyone been able to get the richardpl's AC4 branch to work without audio hiccups? I compiled it on Ubuntu 20.04 LTS and used FFplay to watch ATSC 3.0 stations. I didn't notice audio hiccups, although there were a lot of errors in the stream (fringe reception). What I did notice is that FFplay i...
by TBR
Sun May 09, 2021 5:00 pm
Forum: ATSC 3.0 Forum
Topic: Latest App for Roku?
Replies: 14
Views: 4142

Re: Latest App for Roku?

More HDHR Roku problems... I have a Roku Express not playing sound on any of the channels and a Roku Express 4K (with 10.0.1) not playing any channels at all The Express 4K is new today, the Express was working on ATSC 1.0 channels at some time in the recent past prior to moving it to another TV and...
by TBR
Wed May 05, 2021 5:40 pm
Forum: ATSC 3.0 Forum
Topic: AC-4 Audio?
Replies: 322
Views: 60720

Re: AC-4 Audio?

Just out of curiosity, did you ever try recording a stream, and if so was VLC able to play the recording? It just seems to me that if you can record the signal and it will then play back on the device that recorded it, it should play on other devices as well. However I do know that H.265 is a bit m...
by TBR
Wed May 05, 2021 7:30 am
Forum: ATSC 3.0 Forum
Topic: AC-4 Audio?
Replies: 322
Views: 60720

Re: AC-4 Audio?

I don't know if this will help you at all, but it looks somewhat similar to what you are trying to do. It is decoding the audio in real time from a satellite TV channel from a big old C-band satellite dish, that sends six channels of audio (5.1 format) in three discrete 2-channel streams. You shoul...
by TBR
Wed May 05, 2021 7:00 am
Forum: ATSC 3.0 Forum
Topic: AC-4 Audio?
Replies: 322
Views: 60720

Re: AC-4 Audio?

You're also making things appear to be way too difficult for an average Linux user. Building the binaries from richarpl's source tree is as simple as typing in the following command in a terminal window where you've downloaded his code: ./configure & make If you're not able to unzip some files, ope...
by TBR
Mon Mar 15, 2021 1:34 pm
Forum: ATSC 3.0 Forum
Topic: AC-4 Audio?
Replies: 322
Views: 60720

Re: AC-4 Audio?

Meanwhile, another approach: since my Galaxy S9 with Android 10 plays the HDHR app so well, for $20 I ordered both an HDMI adapter and an HDMI-to-RCA converter to tie into my AV network. I don't expect great resolution, but less eyestrain. An update for anyone tempted to try a similar method: The H...
by TBR
Sat Mar 13, 2021 9:59 am
Forum: ATSC 3.0 Forum
Topic: AC-4 Audio?
Replies: 322
Views: 60720

Re: AC-4 Audio?

Windows App Black Blank Screen Fix

Turn OFF >> Use AC3 passthrough when possible << in settings

The Android app (which plays the HEVC video regardless) does not have this switch, unfortunately.
by TBR
Fri Mar 12, 2021 9:53 pm
Forum: ATSC 3.0 Forum
Topic: AC-4 Audio?
Replies: 322
Views: 60720

Re: AC-4 Audio?

That's odd because all my Android devices, even the oldest ones running Android 7 and LineageOS, (pre-AC-4 audio), play the audio for every ATSC3.0/AC-4 channel in the Phoenix area using the HDHomeRun app. It's my understanding that the audio decoding is baked into the HDHomeRun app. AC-4 audio dec...
by TBR
Thu Mar 11, 2021 2:52 pm
Forum: ATSC 3.0 Forum
Topic: AC-4 Audio?
Replies: 322
Views: 60720

Re: AC-4 Audio?

The Kodi 18.3 Chinese derivative ("KDPlayer") on the T95 Mini Android TV box crashes intermittently with my weak ATSC 3 signal. Does your T95 not support the HDHomeRun app? The T95 plays the HDHR app, but without audio on the ATSC 3 channels. The app apparently does not have software support for AC...
by TBR
Thu Mar 11, 2021 12:13 pm
Forum: ATSC 3.0 Forum
Topic: AC-4 Audio?
Replies: 322
Views: 60720

Re: AC-4 Audio?

That branch is against the main trunk. I compiled a 4.3.x version and Kodi now plays audio for ATSC 3.0 Dallas, TX stations (H.265 + AC-4). I have VERY limited knowledge of Kodi but it does seem to directly play from the tuner Lost Dog was able to compile Kodi with AC-4 support. You should probably...
by TBR
Thu Mar 11, 2021 8:42 am
Forum: ATSC 3.0 Forum
Topic: AC-4 Audio?
Replies: 322
Views: 60720

Re: AC-4 Audio?

I compiled this fork of ffmpeg on linux: https://github.com/richardpl/FFmpeg/tree/ac4 I don't think this is in the main trunk for ffmpeg, but this is at least promising. That branch is against the main trunk. I compiled a 4.3.x version and Kodi now plays audio for ATSC 3.0 Dallas, TX stations (H.26...
by TBR
Wed Mar 10, 2021 5:47 pm
Forum: ATSC 3.0 Forum
Topic: AC-4 Audio?
Replies: 322
Views: 60720

Re: AC-4 Audio?

Earlier in this thread LostDog and I both created VLC builds for Windows that incorporated richardpl's AC-4 branch of ffmpeg but unbeknownst to us at the time, VLC doesn't use ffmpeg for the audio playback portion of a video stream, so there's no audio when playing back ATSC3.0/AC-4 streams. This w...
by TBR
Wed Mar 10, 2021 10:27 am
Forum: ATSC 3.0 Forum
Topic: AC-4 Audio?
Replies: 322
Views: 60720

Re: AC-4 Audio?

To disable your GPU's vsync or to use a lower refresh rate, you'll need to use the vendor supplied app(s) to turn it off or lower it to a more reasonable refresh rate. On Windows boxes with Intel iGPUs, it's usually the Intel Graphics Command Center in the lower right portion of the Windows Task Ba...
by TBR
Tue Mar 09, 2021 12:05 pm
Forum: ATSC 3.0 Forum
Topic: AC-4 Audio?
Replies: 322
Views: 60720

Re: AC-4 Audio?

I'm pleased to report that the ffmpeg-ac4 branch runs perfectly on a Celeron J4125 CPU. Audio and video were in perfect sync with no dropped frames or stuttering and I was streaming HEVC over WiFi. I didn't even need to use any buffer or sync switches on my command line. This leads me to believe th...