Problem using ffmpeg command

[Arun Krishnan]

I am using a Creative Webcam NX Ultra(Model No-PD1120) . I tried using the following command to capture the webcam video to an avi file.
ffmpeg -f video4linux2 -s 640x480 -i /dev/video0 -y sample.avi

I am getting the following error message:
ffmpeg version N-50294-gbb7bc34 Copyright (c) 2000-2013 the FFmpeg developers
built on Feb 25 2013 12:06:20 with gcc 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3)
configuration:
libavutil 52. 17.103 / 52. 17.103
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.100 / 54. 63.100
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 41.100 / 3. 41.100
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
[video4linux2,v4l2 @ 0x2d300e0] Cannot find a proper format for codec 'none' (id 0), pixel format 'none' (id -1)
Assertion *codec_id != AV_CODEC_ID_NONE failed at libavdevice/v4l2.c:824
Aborted


Can anyone help me with this please, my situation is very critical. I expect some help very soon. Thank you in advance.

[evilsoup]

Hmm... it's almost a shot in the dark, but try:

ffmpeg -y -f video4linux2 -c:v rawvideo -s 640x480 -i /dev/video0 sample.avi

Also, just to check, the webcam is turned on in your BIOS? Can you use it in other applications, like cheese or skype?

[FakeOutdoorsman]

Please show the output of:

ffmpeg -f video4linux2 -list_formats all -i /dev/video0

[Arun Krishnan]

Thanks to both of you for your support, i have listed the output of the commands you listed:

output of the command requested by FakeOutdoorsman:
ffmpeg -f video4linux2 -list_formats all -i /dev/video0

ffmpeg version N-50294-gbb7bc34 Copyright (c) 2000-2013 the FFmpeg developers
built on Feb 25 2013 12:06:20 with gcc 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3)
configuration:
libavutil 52. 17.103 / 52. 17.103
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.100 / 54. 63.100
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 41.100 / 3. 41.100
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
[video4linux2,v4l2 @ 0x28c8c20] Raw : Unsupported : S505 : 160x120 176x144 320x240 352x288 640x480
/dev/video0: Immediate exit requested

@evilsoup: tried out the comman you requested, am getting the error
ffmpeg -y -f video4linux2 -c:v rawvideo -s 640x480 -i /dev/video0 sample.avi


ffmpeg version N-50294-gbb7bc34 Copyright (c) 2000-2013 the FFmpeg developers
built on Feb 25 2013 12:06:20 with gcc 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3)
configuration:
libavutil 52. 17.103 / 52. 17.103
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.100 / 54. 63.100
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 41.100 / 3. 41.100
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
[video4linux2,v4l2 @ 0x30b5180] Cannot find a proper format for codec 'rawvideo' (id 14), pixel format 'none' (id -1)
Assertion *codec_id != AV_CODEC_ID_NONE failed at libavdevice/v4l2.c:824
Aborted

[Arun Krishnan]

No reply yet

[FakeOutdoorsman]

Also show the output of:

v4l2-ctl --list-formats-ext

Please use the code tag for the console outputs. It makes reading your posts easier.

[Arun Krishnan]

Thank you for your reply, i got the output using a Phillips Webcam. It seems the webcam i used never had v4l2-compatibility.