[Bug] ISA 22.3.13-Piers breaks Amazon Prime Audio

[the-dreamer]

Describe the problem

With newest ISA update Amazon Prime Audio is not working. switching back to 22.3.12-Piers Audio come back. Needed to use amazon because Netflix seems dead on my site finally :-(

Possible fix

No response

Steps to reproduce

Play any video with prime addon.

Debug log

https://paste.libreelec.tv/conductorless-kathie.log

Stream manifest file(s)

No response

Additional info

relevant log seems that:

2026-06-02 10:33:42.481 T:5924 warning <inputstream.adaptive>: [WV-CDM-Library] OnSessionKeysChange: KID 3D064A0BADFE4E8DBA587BA1713C2B8E with status 1 has error system code: 5
2026-06-02 10:33:42.481 T:5924 debug <inputstream.adaptive>: OnKeyStatusChangeNotify: KID 3d064a0badfe4e8dba587ba1713c2b8e, status INTERNAL_ERROR
2026-06-02 10:33:42.481 T:5924 debug <inputstream.adaptive>: OnKeyStatusChangeNotify: KID bdc66e18668344bc95f8c9d65873bf33, status USABLE
2026-06-02 10:33:42.502 T:5924 debug <inputstream.adaptive>: LogDecryptError: Decrypt failed with error code: 2 and KID: 3d064a0badfe4e8dba587ba1713c2b8e

If more infos are necessary, let me know.

Operating system(s)

Linux

Operating system version(s)

LE 13 master build end of may

InputStream Adaptive version(s)

22.3.13-Piers

Kodi version(s)

Piers end of may build

[CastagnaIT]

2026-06-02 10:33:42.937 T:5924 warning <inputstream.adaptive>: Secure decoder on audio stream is not supported

Can you provide me the movie title? if you more than one title please list some other thanks
i was trying finding this type of stream that needs secure decoder without success

anyway this is not a bug, as specified on changelog of last version:
[inputstream.adaptive.config] check_hdcp parameter is now effective and disabled by default

the am@zon addon should set check_hdcp to license in order to exclude these unsupported streams

EDIT: i will add to wiki seem i forgot to explain it, the hope is trying implementing this #2021 to full solve the problem without workarounds, but i need to know some titles that require it in order to make tests

[the-dreamer]

I tried several movies and shows. With .13 no one has audio at all. I mean. The first player info screen is telling me audio AAC for Example. but the second screen is telling me, decoder none, bitrate 0, samplerate 0 and so on.

For my understanding Amazon was switching beginning of april to secure audio and there was also some log entries like secure decoder not supported and all audio options disappear. After few days later amazon moved back and audio was working again.

With ISA .12 Audio is working like expected but with .13 not. I mean, i can switch back and forth to reproduce it. If secure decoder for audio would the problem, .12 would also not working, or i am wrong?

I tried more, but here which are not working i tested today:

Tulsa king
Jack Ryan

Edit: I tried many audio options and no one had audio output.

[CastagnaIT]

@Sandmann79 can you check if you have set check_hdcp or not?

[CastagnaIT]

i found the problem... because the whole thing are so complicated, I didn't notice a problem with the latest changes
also AI doesn't help as much as it used to
unfortunately my account had expired so i couldn't test it in advance
i will do a fixup soon

[the-dreamer]

No hurry. Errors can occure. i noticed it and created an issue. Please let me know, if i can test something. in the meantime i am on .12

[the-dreamer]

Unfortunately version .14 is only partly fixing the issue.

Example: Steal has audio back as also some other movies. But the show "we are liar" has no audio. Switching back to .12 audio is working. As i have mentioned before, If secure audio would kick in, .12 also would have no audio, right?

[CastagnaIT]

i tried play "we are liar" but to me audio works correctly, maybe on linux there is a different manifest but i have no way atm to use linux, can you attach here the your manifest file?

[the-dreamer]

sorry for delay:

https://paste.libreelec.tv/interplanetary-jaclyn.log

manifest_1781511108.zip

[CastagnaIT]

thanks now its clear, on my am@zon i dont have ec3 audio tracks, but low quality mp4 only
weird, is this an am@zon VOD bug? maybe @Sandmann79 can give me some info about this?

your ec3 track share same KID of video track so cant be played atm
the only workaround is set in the addon code set check_hdcp to license as said initially above

[the-dreamer]

actually the latest release doesn't have eac3 anymore, but @Sandmann79 add a commit Sandmann79/xbmc@d34b268 which fix that. i am on this "beta"

[CastagnaIT]

oh ok i didnt know that
i will try test "beta" master branch

[CastagnaIT]

ok i made some tests as confirm

so its needed fix am@zon addon, just after this line
https://github.com/Sandmann79/xbmc/blob/0cadc7f41db78a6a5db50ef8254ab21b8b3f301f/plugin.video.amazon-test/resources/lib/playback.py#L471

you must add

            # On some platforms the audio secure decoder is not supported by ISA, you need to set "check_hdcp" to exclude them
            isa_cfg = {"check_hdcp": "license"}
            listitem.setProperty('inputstream.adaptive.config', json.dumps(isa_cfg))

the amz dev must add it

there is no way to do this in an automatic way as before
because improvements have been introduced for other DRM use cases that prevent the "previous" workaround behavior from being kept always enabled

atm the experimentation to implement audio secure decoder required here its just started and i don't know if I'll be able to do anything, i tried to do a test here, but unfortunately the secure audio decoder continues to refuse to initialize and i still haven't understood the reason