script.module.inputstreamhelper: Playback fails using newer Widevine CDM 4.10.2252.0 on ARM

It seems our users updating Widevine CDM on ARM are downloading a different kind of libwidevinecdm.so.

The error shown in the Kodi log is:

ERROR: AddOnLog: InputStream Adaptive: Unable to load widevine shared library (/storage/.kodi/cdm/libwidevinecdm.so)
ERROR: AddOnLog: InputStream Adaptive: OpenDRMSystem failed

The older Widevine CDM has the following dependencies:

kodi04:~ # cd ~/.kodi/userdata/addon_data/script.module.inputstreamhelper/backup
kodi04:backup # ls -l 13505.111.0/libwidevinecdm.so 
-rwxr--r--    1 root     root       7297324 Feb  4 19:03 13505.111.0/libwidevinecdm.so
kodi04:backup # sha1sum 13505.111.0/libwidevinecdm.so 
d5ee489d5c409ff6cb423f318a23dba71ff2f2b0  13505.111.0/libwidevinecdm.so
kodi04:backup # ldd 13505.111.0/libwidevinecdm.so 
	linux-vdso.so.1 (0xbeca5000)
	/usr/lib/libarmmem-v7l.so (0xb67ac000)
	libpthread.so.0 => /usr/lib/libpthread.so.0 (0xb6783000)
	libm.so.6 => /usr/lib/libm.so.6 (0xb6719000)
	libdl.so.2 => /usr/lib/libdl.so.2 (0xb6706000)
	librt.so.1 => /usr/lib/librt.so.1 (0xb66ef000)
	libnss3.so => /usr/lib/libnss3.so (0xb65fa000)
	libnssutil3.so => /usr/lib/libnssutil3.so (0xb65c8000)
	libnspr4.so => /usr/lib/libnspr4.so (0xb6594000)
	libc.so.6 => /usr/lib/libc.so.6 (0xb6459000)
	/usr/lib/ld-linux-armhf.so.3 (0xb6f0a000)
	libplc4.so => /usr/lib/libplc4.so (0xb6f30000)
	libplds4.so => /usr/lib/libplds4.so (0xb6f2c000)

The newer (broken) Widevine CDM has fewer dependencies:

kodi04:~ # ls -la .kodi/cdm/libwidevinecdm.so 
-rwxr--r--    2 root     root       8887360 May 10 14:51 .kodi/cdm/libwidevinecdm.so
kodi04:~ # sha1sum .kodi/cdm/libwidevinecdm.so 
4d129768d3753328a837a940e6ee903830c791c4  .kodi/cdm/libwidevinecdm.so
kodi04:~ # ldd .kodi/cdm/libwidevinecdm.so 
	linux-vdso.so.1 (0xbee96000)
	/usr/lib/libarmmem-v7l.so (0xb5dcb000)
	libdl.so.2 => /usr/lib/libdl.so.2 (0xb5db8000)
	libpthread.so.0 => /usr/lib/libpthread.so.0 (0xb5d8f000)
	librt.so.1 => /usr/lib/librt.so.1 (0xb5d78000)
	libm.so.6 => /usr/lib/libm.so.6 (0xb5d0e000)
	libc.so.6 => /usr/lib/libc.so.6 (0xb5bd3000)
	/usr/lib/ld-linux-armhf.so.3 (0xb6f6c000)

This newer Widevine CDM no longer depends on libnss3, libnssutil3, libnspr4, libplc4 and libplds4.

Reported at CastagnaIT/plugin.video.netflix#1154 and xbmc/inputstream.adaptive#678

About this issue

Original URL
State: closed
Created 3 years ago
Comments: 25

Most upvoted comments

LibreELEC users who are experiencing this problem should use the new 9.2.7 version: https://libreelec.tv/2021/05/le-9-2-7-10b4-fix-widevine/

mediaminister on May 31, 2021

Your issue is related to the nightly build, LibreELEC will release a new version 9.2.7 where the preloading is permanently added: https://github.com/LibreELEC/LibreELEC.tv/pull/5399

mediaminister on May 28, 2021

Okay, it took a while for me as beginner to figure out that changes to /run/libreelec/kodi.conf are never permanent. But adding a new kodi.conf with LD_PRELOAD=/usr/lib/libtcmalloc_minimal.so inside in the path /storage/.config finally survived the reboot and the LD_PRELOAD=/usr/lib/libtcmalloc_minimal.so is visible in the /run environment.

…and finally: That solved the DRM issue with the newest widevine!

Cool. That made my day. Now widewine works also on the RPI2. Thank you for the quick response and the good work! 👍

… one additional question: Was this an “issue” for me due to my nightly build or is there an additional script or something similar required for the headless installation with KODI and most of the users that do not want to dive into the config files?

CeEs-atd on May 28, 2021

Thanks for the info. You need to add LD_PRELOAD=/usr/lib/libtcmalloc_minimal.so to make the nightly image work with the newest Widevine.

mediaminister on May 28, 2021

@cchsu23 I quickly created a script based on the code from inputstreamhelper. Just put it in the same directory as the ChromeOS recovery .bin or .zip and run it. https://gist.github.com/horstle/f3680902708084a11abb6428fb5fcff4

horstle on May 14, 2021