Dotaz: Nahrávání z TV karty pomocí mencoder-u nefunguje

[zabza]

Dobrý večer,

našel jsem na disku jeden starší skript púro nahrávání videa z analogové TV karty pomocí mencoderu. Ten skript určitě fungoval, nicméně s tou verzí mplayeru/mencoderu (1.0pre8, Mandriva 2007.0), co tu mám teď, nefunguje. Přitom sledování TV pomocí mplayer-u funguje.

[ivok@zero tv]$ grep tv ~/.mplayer/config
tv=driver=v4l2:width=320:height=240:chanlist=europe-east:channels=R6-CT1,R8-CT2,
R10-Nova,R12-Prima,60-Eurosport:norm=PAL

[ivok@zero tv]$ mplayer tv://CT1
MPlayer 1.0pre8-4.1.1 (C) 2000-2006 MPlayer Team
CPU: AMD Athlon(tm) Processor (Family: 6, Model: 8, Stepping: 1)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
Compiled with runtime CPU detection.


93 audio & 211 video codecs
Opening joystick device /dev/input/js0
Can't open joystick device /dev/input/js0: No such file or directory
Can't init input joystick
Setting up LIRC support...

Playing tv://CT1.
Selected driver: v4l2
 name: Video 4 Linux 2 input
 author: Martin Olschewski <olschewski@zpr.uni-koeln.de>
 comment: first try, more to come 
Selected device: BT878 video (Leadtek WinFast 20
 Tuner cap:
 Tuner rxs: LANG1 LANG2
 Capabilites:  video capture  video overlay  VBI capture device  tuner  read/write  streaming
 supported norms: 0 = PAL; 1 = NTSC; 2 = SECAM; 3 = PAL-Nc; 4 = PAL-M; 5 = PAL-N; 6 = NTSC-JP; 7 = PAL-60;
 inputs: 0 = Television; 1 = Composite1; 2 = S-Video; 3 = Composite3;
 Current input: 0
 Current format: BGR24
v4l2: current audio mode is : LANG1
TV channel names detected.
Selected channel: R6 - CT1 (freq: 175.250)
==========================================================================
Opening video decoder: [raw] RAW Uncompressed Video
VDec: vo config request - 320 x 240 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 320x240 => 320x240 Planar YV12  [zoom]
Selected video codec: [rawyv12] vfm: raw (RAW YV12)
==========================================================================
Audio: no sound
Starting playback...


[ivok@zero tv]$ mencoder -ovc lavc -oac mp3lame -lameopts cbr:br=64:mode=3 \
-lavcopts vcodec=mjpeg:mbd=2 -vf denoise3d -o test.avi  tv://CT1
MEncoder 1.0pre8-4.1.1 (C) 2000-2006 MPlayer Team
CPU: AMD Athlon(tm) Processor (Family: 6, Model: 8, Stepping: 1)
CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
Compiled with runtime CPU detection.
93 audio & 211 video codecs
success: format: 9  data: 0x0 - 0x0
Selected driver: dummy
 name: NULL-TV
 author: alex
Selected input hasn't got a tuner!
[V] filefmt:9  fourcc:0x32315659  size:320x200  fps:25.00  ftime:=0.0400
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
Opening video filter: [denoise3d]
==========================================================================
Opening video decoder: [raw] RAW Uncompressed Video
VDec: vo config request - 320 x 200 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is undefined - no prescaling applied.
videocodec: libavcodec (320x200 fourcc=47504a4d [MJPG])
[VE_LAVC] High quality encoding selected (non-realtime)!
Selected video codec: [rawyv12] vfm: raw (RAW YV12)
==========================================================================
Forcing audio preload to 0, max pts correction to 0.

Skipping frame!
Pos:   0.0s      1f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]
Skipping frame!
Pos:   0.0s      2f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]
Skipping frame!
... a takhle to pokračuje dál

V čem může být chyba?

Odpovědi

[Andrej Herceg]

Podľa toho výpisu pri mencoder Selected driver: dummy to nenačítalo/nepoužilo nastavenia zo súboru config. Vyskúšal by som dať tie parametre pre tv priamo na príkazový riadok a možno aj vyskúšal dať tú konfiguráciu do súboru "mencoder.conf" alebo "mencoder" (aj keď by nastavenia mali byť v súbore config).

[zabza]

No jo, to je ono! Dřív četl mencoder nastavení z "config" nebo z "mencoder" (což je u mě symlink na "config"), ale teď to musí být "mencoder.conf" ... Díky moc, vyřešeno.

[PetrK]

tv=driver=v4l2 je spatne, ma to byt -tv driver=v4l2, a dej to normalne jako parametr mencoderu

[zabza]

Není to špatně, pokud je to v config souboru. Nevim proč bych to měl dávat jako parametr, když to můžu mít v souboru. Problém byl v tom, že se ten kofigurační soubor nenačítal.