Christophe ... thanks for working on these problems. A USB based DVD/CD is a great alternative to a conventional player.
I have an Beyonwiz PVR (based on enigma2) and it has the same problems that you have been fixing.
The driver details are;
-------------------------------
root@beyonwizt4:~# opkg list '*dvdplayer*'
enigma2-plugin-extensions-dvdplayer - 3.0+git34641+5a45d2a-r25.0 ...
...
root@beyonwizt4:~# opkg info enigma2-plugin-extensions-dvdplayer
Package: enigma2-plugin-extensions-dvdplayer
Version: 3.0+git34641+5a45d2a-r25.0
Depends: enigma2
Status: unknown ok not-installed
Section: base
Architecture: inihdp
Maintainer: OE-Alliance
MD5Sum: 1da343c0a2a82c92da751b9105b8a11b
Size: 2796
Filename: enigma2-plugin-extensions-dvdplayer_3.0+git34641+5a45d2a-r25.0_inihdp.ipk
Source: git://bitbucket.org/beyonwiz/easy-ui-4.git;protocol=https
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I'm not really familiar with enigma2 or how plugin changes, like the ones you have made, are released to different enigma2 implementations. But it would be great to get this new version of the DVD plugin on the Beyonwiz PVR. Are you able to advise;
1. If/when your updated plugin will be officially release ?
2. Will it be accepted/released by the OE-Alliance ?
3. Will it be released as an update to plugin 3.0+git34641+5a45d2a-r25.0 ... or is it a different plugin ?
Many thanks