Posts by fredinator

Quote from popcornmix

There is (effectively) no AAC passthrough anywhere.

It is mentioned in specs, but n o consumer devices output it and kodi doesn't support it.

Kodi can decode the 6-channel AAC and output 6-channel PCM.

This is lossless and will have perfect quality, but relies on connection to AVR to support multichannel PCM.

It's not clear from your post how the TV and AVR are connected.

Ideally you connect pi-<hdmi>-AVR-<hdmi>-TV but it sounds like you are not (due to AVR not supporting 4K, but TV does).

I assume you care connecting pi-<hdmi>-TV-<something>-AVR?

What is the <something>? Is that ARC or toslink/spdif?

They are limited to two-channel PCM. But two-channel PCM can carry passthrough of AC3 or DTS.

(Note: AAC and AC3 are distinct formats).

The good news is kodi can be configured to decode AAC, encode it to AC3 and output that as passthrough.

That will likely get you multi-channel audio. The operation is lossy, but would be imperceptible to most people.

In system/audio settings set:

Number of channels: 2

Allow passthrough: On

Dolby Digital (AC3) capable receiver: On

- Enable Dolby Digital (AC3) transcoding: On

DTS capable receiver: Off (you could try on, but that is less commonly supported by TVs)

Display More

It works now. I don't know how I missed the "Enable Dolby Digital (AC3) transcoding" option all the time. I must have set something so that option did not appear. Maybe I set the channels wrong?

Yes I'm using ARC, but I guess that does not matter now.

Btw. it also seems to work with enabled DTS.

Thank you so much for your help!!

Ok so if I set it up like described in the table for TV AC3 it should work even with my setup?

I tried it again with debug enabled. Log zip attached. I hope I did it correctly.
The media info says: Audio: AAC 48000Hz 6ch [A: German [ger] (aac lc, 48000 Hz, 5.1) [default]]

Hi, thanks for the answer.

I'm not sure I understand. I set the settings from the table for TV AC3 and it says there that it's 2.0 and that was what I got after setting this up. I then changed it to 5.1 and still only got 2.0. Sorry if I don't understand what you mean.

Hello,

I recently tried to play a 5.1 AAC encoded file but I only came out as Stereo.

My setup is a Raspi 4 connected via HDMI to my Philipps TV (Android) because my AVR can not handle 4k. Audio Output in the TV is set to bypass. In KODI passthrough is enabled for everything Dolby and DTS which works fine but AAC always gets sent as 2.0 PCM.

Is it possible to set it up in a way that AAC 5.1 gets sent to my AVR? The Options I have in my TV are "Multichannel" and "Multichannel (Bypass)" but both give me the same result. Multichannel option is saying something about using optical cable. Would that work if I connect it from TV to AVR?

I assume my TV is the culprit here but I don't know what to do.

If this has an obvious answer then I'm apologizing in advance because I googled and asked AI for 2 hours now and couldn't find an answer I understood.

Hi,

Just to make sure I'm doing this correctly. This is the line I added in cron and its supposed to backup the MBR and partition information onto the sdcard weekly at 3 AM sundays with a timestamp in the filename. I tested it manually and it worked. Would this line work in cron?

00 03 * * 1 dd if=/dev/sda2 of=/storage/backup/mbr_sicherung_$(date -u +\%Y\%m\%dT\%H\%M\%S) bs=512 count=1

Thanks for the help. I'll look into that.
I don't know how to use these tools though since I have almost no experience with linux. Just to make sure "dd" writes byte per byte to a file, right? So I would do that for the part on the partition where partition data is stored and to restore it I would use the same command to write from file back on to disk?

I suspect the storage too but I never expected this could happen

Hello, I'm new here and sorry if I ask a question that has already been answered somewhere but I did not find anything with google and the search here.
Might be that I used the wrong search terms.

Recently I had an issue where the partition on my RAID5 USB drive got messed up somehow right in the middle of watching a movie. I don't know how or why and if it can happen again. The HDDs and the RAID seem to be fine and the enclosure seems fine too. Anyway after that I suddenly had 2 unformated partitions instead of 1 NTFS and recovery tools would take like 10 days because of the size, so I started building my collection over again. But this time I want to make backups of the partition table and not the content on it (Its in a RAID5 for that reason) I found a tool on windows that lets me do that but that would require to plug the drive into my pc every time I want to make a backup.

So my questions are:

1. Would backing up the partition table enable me to restore the partition if this happens again?
2. Is there a way for my pi4 with libreelec to automatically make backups of the partition table?

Thank you