01-17-2023 03:46 AM
Just picked up an old Dolby Digital Receiver and noticed that most streaming apps are falling back to PCM Stereo. Netflix, Disney+, AppleTV+, Prime & Now TV all have this problem. Youtube works fine for what surround content there is.
I can get it to work by manually selecting Dolby Digital Plus or Atmos in the system settings (which should be backward compatible with DD anyway), but then after playing a DD+ stream, if I play a PCM stereo stream (Spotify, etc) plays at half speed and low pitch. This low pitch issue doesn't fix itself until I reboot the chromecast.
01-22-2023 03:39 PM
Hi StinkyWeezle,
Thanks for posting. Let's sort this out!
Quick question: is your Chromecast with Google TV (4K) plugged into the Receiver? If yes, could you try to plug it in directly to your TV? Also, try to plug it into a different HDMI port and check if the same issue will persist.
Regards,
Jennifer
01-24-2023 11:35 AM - edited 01-24-2023 11:43 AM
It's plugged into the TV and using the toslink output to pass through to the receiver. The receiver is quite old and doesn't support ARC. When I connect the Chromecast to the receiver I get the same result with the CC set to autodetect. Only get PCM 48 stereo from all streaming apps except YouTube which outputs AC3 on selected clips. If I connect to the receiver and force DD+ I get no sound at all from any apps and it registers all content as PCM 192 on the display. According to Reddit this all worked prior to the Android 12 update.
TV : LG 50LA660V-ZA
Receiver: Sony HT-SF1300
01-24-2023 03:31 PM
Hello StinkyWeezle,
Thanks for getting back to us. The Chromecast outputs surround sound if a particular app supports it, and if the Audio/Video Receiver (AVR) or TV it's plugged into tells the Chromecast over Extended Display Identification Data (EDID) that it supports 5.1, AC3, and AC3/EAC3 surround sound. If the TV or AVR do not support one of these settings, Chromecast will not output surround sound.
You can check those settings above if it's present on your TV or receiver.
Thanks,
Jennifer
01-24-2023 10:43 PM
The TV and receiver both support AC3 and DTS, but not eAC3. The issue is that most streaming apps (except YT) will currently only output AC3 if eAC3 is detected at the system level.
01-26-2023 02:06 PM
Hi there,
Got it. Could you please perform a factory reset on your Chromecast then try again?
Best,
Jennifer
01-29-2023 03:05 PM
Hey StinkyWeezle,
How's it going? Did you manage to get your device working?
Thanks,
Jennifer
01-30-2023 10:24 AM
Factory reset done, no change. Also spoke with Netflix and Disney on the issue. Disney told me the Chromecast doesn't support 5.1 audio or Atmos (yeah, that's not correct) and Netflix were perplexed about it. Both have escalated to dev teams but it's sounding like there's a problem with the Android API on the device which indicates whether AC3 is supported or not.
Kernel version 4.9.269
Android TV OS build SSTE.220621.019.A2.9082754
01-30-2023 03:23 PM
Hi there,
Understood. We'd like to further check this. Could you fill out this form and let me know once you're done?
Thanks,
Jennifer
02-01-2023 07:58 AM
Form submitted. Thanks for your help.
02-01-2023 10:43 AM
Hello StinkyWeezle,
We got your form — thanks for filling it out. Please keep an eye on your inbox as our team will reach out to you anytime soon.
Also, continue the conversation there as this thread will be locked after 24 hours.
Best,
Jennifer