mencoder segfault while extracting rawaudio from dvd iso

[Zenigata]

Trying to extract audio track from a DVD iso produces a segfault in mencoder with the -aid parameter.

mplayer is able to read the iso as a DVD. mencoder is able to process the video and if no -aid is given no segfault occurs...

Bug experienced with Ubuntu Xenial. Tried to upgrade mencoder to Yakety version with no success fixing the bug.

here is the command line used :

mencoder dvd://3 -nocache -noslices -noconfig all -demuxer +lavf -o /tmp/audio.3E5JPY -aid 128 -dvd-device /home/andrea/Videos/DVD.iso -noskip -ovc copy -of rawaudio -oac copy

and here is the output :

There are 3 titles on this DVD.
There are 1 angles in this DVD title.

libdvdread: Attempting to retrieve all CSS keys
libdvdread: This can take a _long_ time, please be patient

libdvdread: Get key for /VIDEO_TS/VIDEO_TS.VOB at 0x00000138
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_01_0.VOB at 0x00002a82
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_01_1.VOB at 0x00002a87
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_02_0.VOB at 0x00002aae
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_02_1.VOB at 0x00002ab3
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_03_0.VOB at 0x0000704e
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_03_1.VOB at 0x00018a34
libdvdread: Elapsed time 0
libdvdread: Found 3 VTS's
libdvdread: Elapsed time 0
audio stream: 0 format: ac3 (5.1) language: en aid: 128.
audio stream: 1 format: dts (5.1) language: en aid: 137.
audio stream: 2 format: ac3 (stereo) language: en aid: 130.
audio stream: 3 format: dts (5.1) language: fr aid: 139.
audio stream: 4 format: ac3 (5.1) language: fr aid: 132.
number of audio channels on disk: 5.
subtitle ( sid ): 0 language: fr
number of subtitles on disk: 1

success: format: 2 data: 0x0 - 0x5681f000
libavformat version 57.25.100 (external)
libavformat file format detected.
[lavf] stream 0: video (mpeg2video), -vid 0
[lavf] stream 1: audio (ac3), -aid 0
[lavf] stream 2: audio (dca), -aid 1
[lavf] stream 3: audio (ac3), -aid 2
[lavf] stream 4: audio (dca), -aid 3
[lavf] stream 5: audio (ac3), -aid 4
VIDEO: [MPG2] 720x576 0bpp 25.000 fps 0.0 kbps ( 0.0 kbyte/s)
zsh: segmentation fault (core dumped)