Pessoal,
Estou passando por um problema estranho. Estou executando o Debian stretch no meu thinkpad t430. Quando tento capturar vídeo usando minha webcam integrada, consigo visualizar um streaming de vídeo, se
xawtv -c /dev/video0
e não quando eu emito,
mplayer tv://
O erro que recebo é,
--> mplayer tv://
MPlayer 1.3.0 (Debian), built with gcc-6.2.1 (C) 2000-2016 MPlayer Team
do_connect: could not connect to socket
connect: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Playing tv://.
TV file format detected.
Selected driver: v4l2
name: Video 4 Linux 2 input
author: Martin Olschewski <[email protected]>
comment: first try, more to come ;-)
v4l2: your device driver does not support VIDIOC_G_STD ioctl, VIDIOC_G_PARM was used instead.
Selected device: Integrated Camera
Capabilities: video capture streaming
supported norms:
inputs: 0 = Camera 1;
Current input: 0
Current format: YUYV
tv.c: norm_from_string(pal): Bogus norm parameter, setting default.
v4l2: ioctl enum norm failed: Inappropriate ioctl for device
Error: Cannot set norm!
Selected input hasn't got a tuner!
v4l2: ioctl set mute failed: Invalid argument
libva info: VA-API version 0.39.4
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_0_39
libva info: va_openDriver() returns 0
==========================================================================
Opening video decoder: [raw] RAW Uncompressed Video
Movie-Aspect is undefined - no prescaling applied.
VO: [vdpau] 640x480 => 640x480 Packed YUY2
Selected video codec: [rawyuy2] vfm: raw (RAW YUY2)
==========================================================================
Audio: no sound
Starting playback...
v4l2: select timeout
libvdpau-va-gl: VideoSurface::PutBitsYCbCr_glsl(): not implemented source YCbCr format 'VDP_YCBCR_FORMAT_YUYV'
[vdpau] Error when calling vdp_video_surface_put_bits_y_cb_cr: VDP_STATUS_INVALID_Y_CB_CR_FORMAT
MPlayer interrupted by signal 11 in module: filter_video
- MPlayer crashed by bad usage of CPU/FPU/RAM.
Recompile MPlayer with --enable-debug and make a 'gdb' backtrace and
disassembly. Details in DOCS/HTML/en/bugreports_what.html#bugreports_crash.
[ This binary of MPlayer in Debian is currently compiled with
'--enable-debug'; the debugging symbols are in the package
'mplayer-dbgsym'.]
Alguém poderia esclarecer por que o mplayer trava com o erro acima, enquanto o xawtv consegue mostrar?
Qualquer ajuda para depurar e corrigir o problema seria muito apreciada.
Eu tenho o video 4 linux 2 (v4l2) instalado e executando o kernel padrão vem com o debian stretch e atualizado para o mais recente atravésapt
meu v4l2-ctl --list-devicesdiz:
Integrated Camera (usb-0000:00:1a.0-1.6):
/dev/video0
Aah!
O problema desapareceu com
Pelo que entendi, o mplayer deve exigir uma placa NVIDIA instalada em meu laptop, juntamente com gráficos Intel integrados. Meu problema agora é fazê-lo funcionar com o opencv!.
De qualquer forma, agradeço a todos que prestaram atenção e se esforçaram para abordar/tentar me ajudar.