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Posted: **01 Dec 2017 14:11**

I want to extract portions (some chapters)of the audio on one of my DVD:s. (Being a newbie to VLC command line Interface I have read: VLC HowTo/Extract audio [https://wiki.videolan.org/VLC_HowTo/Ext ... _.28GUI.29], specially section 'Scripting extraction of multiple chapters using a batch file')

I have copied the DVD to my D-drive but most if the current tests have been made with the DVD inserted in drive E:

My problem is that I failed when I tried to build a command line using the proposals in the article above. The command line produced wave files but there is no sound in the files.

My System: VLC 2.2.6 Umbrella Win 10 64 bit VOX i5 8GB
Here my Command file: It is expected to deliver a command generating two wave file containing the sound from Title 2 Chapters 1 and 2.

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set DVDDrive=E:

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set DestPrefix=F:\

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set Title=2

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set FirstChapter=1

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set LastChapter=2

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for /L %%i in (%FirstChapter%,1,%LastChapter%) do  "C:\Program Files (x86)\VideoLAN\VLC\vlc.exe"    -I dummy --no-sout-video --sout-audio --no-sout-rtp-sap --no-sout-standard-sap --ttl=1   --sout-keep --sout "#transcode{acodec=s16l,channels=2}:std{access=file,mux=wav,dst=%DestPrefix%_c%%i.wav}"   dvdsimple:///%DVDDrive%\#%Title%:%%i-%Title%:%%i vlc://quit

Same command line but with line breaks for legibility:

for /L %%i in (%FirstChapter%,1,%LastChapter%) do "C:\Program Files (x86)\VideoLAN\VLC\vlc.exe"
-I dummy --no-sout-video --sout-audio --no-sout-rtp-sap --no-sout-standard-sap --ttl=1
--sout-keep --sout "#transcode{acodec=s16l,channels=2}:std{access=file,mux=wav,dst=%DestPrefix%_c%%i.wav}"
dvdsimple:///%DVDDrive%\#%Title%:%%i-%Title%:%%i vlc://quit

In APPENDIX :Logfiles

QUESTIONS:
1) Can you, dear reader, help me finding out what is wrong?

2) And where can I find explanation for following items:
dvdsimple: ?
CSS key?
ES_OUT_RESET_PCR?
PCR value ?

I hope You can help me a few steps forward in knowledge!
APPENDIX Output first command file and copy log on screen:

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"C:\Program Files (x86)\VideoLAN\VLC\vlc.exe"    -I dummy --no-sout-video --sout-audio --no-sout-rtp-sap --no-sout-standard-sap --ttl=1   --sout-keep --sout "#transcode{acodec=s16l,channels=2}:std{access=file,mux=wav,dst=F:\_c1.wav}"   dvdsimple:///E:\#2:1-2:1 vlc://quit

Coppy of log on screen

[00a0068c] dummy interface: VLC media player - 2.2.6 Umbrella
[00a0068c] dummy interface: Copyright © 1996-2017 the VideoLAN team
[00a0068c] dummy interface:
Varning: Öppna ett kommandotolksfönster, gå till katalogen där du installerade VLC och kör "vlc -I qt" om du inte längre kan komma åt användargränssnittet.
[00a0068c] dummy interface: using the dummy interface module...
libdvdread: Attempting to retrieve all CSS keys
libdvdread: This can take a _long_ time, please be patient
libdvdread: Get key for /VIDEO_TS/VTS_01_1.VOB at 0x0000014b
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_02_0.VOB at 0x000023e8
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_02_1.VOB at 0x000024c0
libdvdread: Elapsed time 0
libdvdread: Get key for /VIDEO_TS/VTS_03_1.VOB at 0x0037035e
libdvdread: Elapsed time 0
libdvdread: Found 3 VTS's
libdvdread: Elapsed time 0
[00928a7c] core input error: ES_OUT_RESET_PCR called
[00928a7c] core input error: Invalid PCR value in ES_OUT_SET_(GROUP_)PCR !
[02861c1c] core decoder error: cannot continue streaming due to errors
[00928a7c] core input error: ES_OUT_RESET_PCR called
[00928a7c] core input error: Invalid PCR value in ES_OUT_SET_(GROUP_)PCR !
[009e75fc] core mux error: cannot add this stream
[02861c1c] core decoder error: cannot create packetizer output (a52 )

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Help needed for Using the VLC command line for extracting audio.

Help needed for Using the VLC command line for extracting audio.