[FFmpeg-user] how to get mpeg2 ts video data from usb webcam

[Soho Soho123]

Hi All,

Does any one know how to get video frame from usb web cam?
the webcam support MPEG2 TS format,
I see the code :
ffmpeg-951d39f/libavdevice/v4l2.c,
static struct fmt_map fmt_conversion_table[]

does not include any information about mpeg2 ts format ?

Any inputs are appreciated!