Ich versuche, eine .webm-Datei in mp4 zu konvertieren. In der GUI wähle ich die folgenden Einstellungen für die Konvertierung:
Video:
- Codec: H-264
- Listenpunkt
- Bitrate: 512 kb/s
- Bildrate: 23,97 fps
- Maßstab: 1
Audio:
- Codec: MPEG 4 Audio (AAC)
- Bitrate: 128 kb/s
- Kanäle: 2
- Abtastrate: 44100
Und es hat perfekt funktioniert. Jetzt wollte ich alle meine WebM-Videodateien in einem Batch in MP4 konvertieren. Also habe ich dieses Batch-Skript ausprobiert (meistens in FormVLC-Wiki-Seite)
@echo off
FOR /R %%G IN (*.webm) DO (CALL :SUB_VLC "%%G")
GOTO :eof
:SUB_VLC
SET _firstbit=%1
SET _qt="
CALL SET _newnm=%%_firstbit:%_qt%=%%
SET _commanm=%_newnm:,=_COMMA_%
echo %_commanm%
CALL "C:\Program Files (x86)\VideoLAN\VLC\vlc" -I dummy -vvv %1 --sout=#transcode{vcodec="h264", vb="512", fps="23.97", scale="1", acodec="mpga",ab="128","channels=2",samplerate="44100"}:standard{access="file",mux="dummy",dst="%_commanm%.mp4"} vlc://quit
GOTO :eof
:eof
Aber es scheint nicht zu funktionieren (d. h. ich bekomme keine Ausgabe). Stattdessen erhalte ich diese Meldungen im Dummy-Fenster von VLC:
[023332fc] dummy interface: VLC media player - 1.1.11 The Luggage
[023332fc] dummy interface: Copyright © 1996-2011 the VideoLAN team
[023332fc] dummy interface:
Warning: if you can't access the GUI anymore, open a command-line window, go to
the directory where you installed VLC and run "vlc -I qt"
[023332fc] dummy interface: using the dummy interface module...
[023332fc] main interface debug: using interface module "dummy"
[023332fc] main interface debug: TIMER module_need() : 45.000 ms - Total 45.000
ms / 1 intvls (Avg 45.000 ms)
[02315e04] main playlist debug: rebuilding array of current - root Playlist
[02315e04] main playlist debug: rebuild done - 5 items, index -1
[02315e04] main playlist debug: processing request item null node Playlist skip
0
[02315e04] main playlist debug: starting new item
[02315e04] main playlist debug: creating new input thread
[022ffbe4] main input debug: Creating an input for 'a.webm'
[022ffbe4] main input debug: thread (input) created at priority 1 (../.././src/i
nput/input.c:220)
[022ffbe4] main input debug: thread started
[02343144] main stream output debug: using sout chain=`transcode{vcodec=h264,'
[02343144] main stream output debug: stream=`transcode'
[023400dc] main stream out debug: looking for sout stream module: 1 candidate
[023400dc] stream_out_transcode stream out error: cannot create chain
[023400dc] main stream out debug: no sout stream module matching "transcode" cou
ld be loaded
[023400dc] main stream out debug: TIMER module_need() : 5.000 ms - Total 5.000 m
s / 1 intvls (Avg 5.000 ms)
[023400dc] main stream out debug: destroying chain... (name=(null))
[023400dc] main stream out debug: destroying chain done
[02343144] main stream output error: stream chain failed for `transcode{vcodec=h
264,'
[022ffbe4] main input error: cannot start stream output instance, aborting
[02315e04] main playlist debug: finished input
[022ffbe4] main input debug: thread ended
[02315e04] main playlist debug: dead input
[022ffbe4] main input debug: thread times: real 0m0.015000s, kernel 0m0.000000s,
user 0m0.000000s
[022ffbe4] main input debug: TIMER input launching for 'a.webm' : 15.000 ms - To
tal 15.000 ms / 1 intvls (Avg 15.000 ms)
[02315e04] main playlist debug: changing item without a request (current 0/5)
[02315e04] main playlist debug: using item 1
[02315e04] main playlist debug: starting new item
[02315e04] main playlist debug: creating new input thread
[022ffbe4] main input debug: Creating an input for 'New Folder/vb=512,'
[022ffbe4] main input debug: thread started
[022ffbe4] main input debug: thread (input) created at priority 1 (../.././src/i
nput/input.c:220)
[02343204] main stream output debug: using sout chain=`transcode{vcodec=h264,'
[02343204] main stream output debug: stream=`transcode'
[02340194] main stream out debug: looking for sout stream module: 1 candidate
[02340194] stream_out_transcode stream out error: cannot create chain
[02340194] main stream out debug: no sout stream module matching "transcode" cou
ld be loaded
[02340194] main stream out debug: TIMER module_need() : 5.000 ms - Total 5.000 m
s / 1 intvls (Avg 5.000 ms)
[02340194] main stream out debug: destroying chain... (name=(null))
[02340194] main stream out debug: destroying chain done
[02343204] main stream output error: stream chain failed for `transcode{vcodec=h
264,'
[022ffbe4] main input error: cannot start stream output instance, aborting
[02315e04] main playlist debug: finished input
[022ffbe4] main input debug: thread ended
[02315e04] main playlist debug: dead input
[022ffbe4] main input debug: thread times: real 0m0.030000s, kernel 0m0.000000s,
user 0m0.000000s
[022ffbe4] main input debug: TIMER input launching for 'New Folder/vb=512,' : 30
.000 ms - Total 30.000 ms / 1 intvls (Avg 30.000 ms)
[02315e04] main playlist debug: changing item without a request (current 1/5)
[02315e04] main playlist debug: using item 2
[02315e04] main playlist debug: starting new item
[02315e04] main playlist debug: creating new input thread
[022ffbe4] main input debug: Creating an input for 'New Folder/fps=23.97,'
[022ffbe4] main input debug: thread (input) created at priority 1 (../.././src/i
nput/input.c:220)
[022ffbe4] main input debug: thread started
[02343144] main stream output debug: using sout chain=`transcode{vcodec=h264,'
[02343144] main stream output debug: stream=`transcode'
[02315e04] main playlist debug: meta ok for (null), need to fetch art
[0231871c] main stream out debug: looking for sout stream module: 1 candidate
[02cd3b5c] main demux meta debug: looking for meta fetcher module: 1 candidate
[0231871c] stream_out_transcode stream out error: cannot create chain
[02cd3b5c] lua demux meta debug: Trying Lua scripts in C:\Users\mmz\AppData\Roam
ing\vlc\lua\meta\fetcher
[0231871c] main stream out debug: no sout stream module matching "transcode" cou
ld be loaded
[02cd3b5c] lua demux meta debug: Trying Lua scripts in C:\Program Files (x86)\Vi
deoLAN\VLC\lua\meta\fetcher
[0231871c] main stream out debug: TIMER module_need() : 0.000 ms - Total 0.000 m
s / 1 intvls (Avg 0.000 ms)
[0231871c] main stream out debug: destroying chain... (name=(null))
[02cd3b5c] lua demux meta debug: Trying Lua playlist script C:\Program Files (x8
6)\VideoLAN\VLC\lua\meta\fetcher\tvrage.lua
[0231871c] main stream out debug: destroying chain done
[02343144] main stream output error: stream chain failed for `transcode{vcodec=h
264,'
[02cd3b5c] main demux meta debug: using meta fetcher module "lua"
[022ffbe4] main input error: cannot start stream output instance, aborting
[02315e04] main playlist debug: finished input
[02cd3b5c] main demux meta debug: TIMER module_need() : 5.000 ms - Total 5.000 m
s / 1 intvls (Avg 5.000 ms)
[022ffbe4] main input debug: thread ended
[02315e04] main playlist debug: dead input
[02cd3b5c] main demux meta debug: removing module "lua"
[022ffbe4] main input debug: thread times: real 0m0.010000s, kernel 0m0.000000s,
user 0m0.000000s
[02315e04] main playlist debug: searching art for a.webm
[022ffbe4] main input debug: TIMER input launching for 'New Folder/fps=23.97,' :
15.000 ms - Total 15.000 ms / 1 intvls (Avg 15.000 ms)
[02315e04] main playlist debug: changing item without a request (current 2/5)
[022c74d4] main art finder debug: looking for art finder module: 2 candidates
[02315e04] main playlist debug: using item 3
[022c74d4] lua art finder debug: Trying Lua scripts in C:\Users\mmz\AppData\Roam
ing\vlc\lua\meta\art
[02315e04] main playlist debug: starting new item
[022c74d4] lua art finder debug: Trying Lua scripts in C:\Program Files (x86)\Vi
deoLAN\VLC\lua\meta\art
[02315e04] main playlist debug: creating new input thread
[022c74d4] lua art finder debug: Trying Lua playlist script C:\Program Files (x8
6)\VideoLAN\VLC\lua\meta\art\01_googleimage.lua
[022ffbe4] main input debug: Creating an input for 'New Folder/scale=1,'
[022c74d4] lua art finder debug: Trying Lua playlist script C:\Program Files (x8
6)\VideoLAN\VLC\lua\meta\art\02_frenchtv.lua
[022ffbe4] main input debug: thread (input) created at priority 1 (../.././src/i
nput/input.c:220)
[022ffbe4] main input debug: thread started
[022c74d4] lua art finder debug: Trying Lua playlist script C:\Program Files (x8
6)\VideoLAN\VLC\lua\meta\art\03_lastfm.lua
[02ca2f6c] main stream output debug: using sout chain=`transcode{vcodec=h264,'
[02ca2f6c] main stream output debug: stream=`transcode'
[022c74d4] lua art finder debug: Trying Lua playlist script C:\Program Files (x8
6)\VideoLAN\VLC\lua\meta\art\04_musicbrainz.lua
[023187d4] main stream out debug: looking for sout stream module: 1 candidate
[023187d4] stream_out_transcode stream out error: cannot create chain
[022c74d4] main art finder debug: no art finder module matching "any" could be l
oaded
[023187d4] main stream out debug: no sout stream module matching "transcode" cou
ld be loaded
[022c74d4] main art finder debug: TIMER module_need() : 10.000 ms - Total 10.000
ms / 1 intvls (Avg 10.000 ms)
[02315e04] main playlist debug: art not found for a.webm
[023187d4] main stream out debug: TIMER module_need() : 10.000 ms - Total 10.000
ms / 1 intvls (Avg 10.000 ms)
[023187d4] main stream out debug: destroying chain... (name=(null))
[023187d4] main stream out debug: destroying chain done
[02ca2f6c] main stream output error: stream chain failed for `transcode{vcodec=h
264,'
[022ffbe4] main input error: cannot start stream output instance, aborting
[02315e04] main playlist debug: finished input
[022ffbe4] main input debug: thread ended
[02315e04] main playlist debug: dead input
[022ffbe4] main input debug: thread times: real 0m0.015000s, kernel 0m0.000000s,
user 0m0.015600s
[022ffbe4] main input debug: TIMER input launching for 'New Folder/scale=1,' : 1
5.000 ms - Total 15.000 ms / 1 intvls (Avg 15.000 ms)
[02315e04] main playlist debug: changing item without a request (current 3/5)
[02315e04] main playlist debug: using item 4
[02315e04] main playlist debug: starting new item
[02315e04] main playlist debug: creating new input thread
[022ffbe4] main input debug: Creating an input for 'a.webm.mp4}'
[022ffbe4] main input debug: thread (input) created at priority 1 (../.././src/i
nput/input.c:220)
[022ffbe4] main input debug: thread started
[02ca302c] main stream output debug: using sout chain=`transcode{vcodec=h264,'
[02ca302c] main stream output debug: stream=`transcode'
[02cc8c24] main stream out debug: looking for sout stream module: 1 candidate
[02cc8c24] stream_out_transcode stream out error: cannot create chain
[02cc8c24] main stream out debug: no sout stream module matching "transcode" cou
ld be loaded
[02cc8c24] main stream out debug: TIMER module_need() : 0.000 ms - Total 0.000 m
s / 1 intvls (Avg 0.000 ms)
[02cc8c24] main stream out debug: destroying chain... (name=(null))
[02cc8c24] main stream out debug: destroying chain done
[02ca302c] main stream output error: stream chain failed for `transcode{vcodec=h
264,'
[022ffbe4] main input error: cannot start stream output instance, aborting
[02315e04] main playlist debug: finished input
[022ffbe4] main input debug: thread ended
[02315e04] main playlist debug: dead input
[022ffbe4] main input debug: thread times: real 0m0.015000s, kernel 0m0.015600s,
user 0m0.000000s
[022ffbe4] main input debug: TIMER input launching for 'a.webm.mp4}' : 15.000 ms
- Total 15.000 ms / 1 intvls (Avg 15.000 ms)
[02315e04] main playlist debug: changing item without a request (current 4/5)
[02315e04] main playlist debug: nothing to play
Was mache ich falsch?
Antwort1
Ich mache aus meinem Kommentar eine Antwort. Ich denke, er ist die Ursache Ihres Problems.
In Ihrem Skript verwenden Sie
CALL "C:\Program Files (x86)\VideoLAN\VLC\vlc" -I dummy -vvv %1 --sout=#transcode{vcodec="h264", vb="512", fps="23.97", scale="1", acodec="mpga",ab="128","channels=2",samplerate="44100"}:standard{access="file",mux="dummy",dst="%_commanm%.mp4"} vlc://quit
und der Fehler zeigt
main stream output error: stream chain failed for `transcode{vcodec=h264,'
das lässt mich zu dem Schluss kommen, dass der Parser bei jedem Leerzeichen (Leerzeichen, Tabulator usw.) abschneidet und den Befehl daher nicht verstehen kann. Im Link zum VLC-Wiki sind auch keine Leerzeichen vorhanden.
versuchen Sie diese Zeile:
CALL "C:\Program Files (x86)\VideoLAN\VLC\vlc" -I dummy -vvv %1 --sout=#transcode{vcodec="h264",vb="512",fps="23.97",scale="1",acodec="mpga",ab="128","channels=2",samplerate="44100"}:standard{access="file",mux="dummy",dst="%_commanm%.mp4"} vlc://quit
Sie fragen sich vielleicht, warum VLC mit diesen dummen Leerzeichen nicht klarkommt? (Eigentlich wissen Sie das ;))
Wenn ein Programm zur Ausführung durch das Betriebssystem aufgerufen wird - das ist mir nur bei Linux sicher, aber ich bin mir ziemlich sicher, dass Windows das ganz ähnlich handhabt - werden die Parameter des Befehls vom Betriebssystem (an den Leerzeichen) aufgeteilt und dann als Liste an das Programm übergeben, die jeweils nur den Inhalt zwischen den Leerzeichen enthält.
Aufgabe des Programms wäre es also, alle Einzeleinträge dieser Liste zu erkennen, auszulesen und wieder zusammenzufügen, was zwar möglich ist, aber sowohl bei der Entwicklung der Software als auch bei der Auswertung der Parameter Zeit kostet.
Antwort2
Um meine Camcorder-Mod-Dateien in .m4v zu konvertieren, habe ich unter Linux dieses Skript geschrieben
#!/bin/sh
NAME=`echo "$1" | cut -d'.' -f1`
vlc $1 -I dummy --play-and-exit --sout='#transcode{vcodec=h264,acodec=mp4a,ab=128,samplerate=44100,deinterlace,audio-sync}:std{access=file, mux=mp4,dst=./'"$NAME"'.m4v}
dem ich einen Namen gegeben mod2h264.shund es ausführbar gemacht habe.
Geben Sie dann in der Befehlszeile einfach
for file in *.MOD; do ~/MyScripts/mod2h264.sh "$file"; done
und Sie konvertieren alle .MOD-Dateien im aktuellen Verzeichnis. Sie können die Optionen an die gewünschte Ausgabe anpassen.