trying to capture and encode the capture data from tvp5146 composite input

hi all

using dm365 with latest dvsdk

need to know how to set the pitch of the fmt according to use as the video coming after encoding is lines only

suggested problem is the buffer is extra then the required buffer and taking extra data due to pitch option

my resolution is 720x480  and ioctl setting pitch 736 automatically

here is detail

in Capture.c

               fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_NV12;

             fmt.fmt.pix.bytesperline = 720;

            fmt.fmt.pix.sizeimage = (720 * 480 * (1+1/2));

      pixelFormat = fmt.fmt.pix.pixelformat;

{type = V4L2_BUF_TYPE_VIDEO_CAPTURE, fmt = {pix = {width = 720,
      height = 480, pixelformat = 842094158, field = V4L2_FIELD_INTERLACED,
      bytesperline = 720, sizeimage = 345600,
      colorspace = V4L2_COLORSPACE_SMPTE170M, priv = 0}, win = {w = {
        left = 720, top = 480, width = 842094158, height = 4}, field = 720,
      chromakey = 345600, clips = 0x1, clipcount = 0, bitmap = 0xc50fbc23,
      global_alpha = 93 ']'}, vbi = {sampling_rate = 720, offset = 480,
      samples_per_line = 842094158, sample_format = 4, start = {720, 345600},
      count = {1, 0}, flags = 3306142755, reserved = {65629, 3305635840}},
    sliced = {service_set = 720, service_lines = {{0, 480, 0, 22094, 12849, 4,
          0, 720, 0, 17920, 5, 1, 0, 0, 0, 48163, 50447, 93, 1, 0, 50440,
          48198, 50447, 0}, {0, 0, 0, 20504, 50445, 1, 0, 2, 0, 56320, 50440,
          19104, 50548, 20208, 50445, 48372, 50447, 48304, 50447, 8788, 49186,
          6792, 49186, 2}}, io_size = 2, reserved = {3306142918, 3306135552}},
    raw_data = "�\002\000\000�\001\000\000NV12\004\000\000\000�\002\000\000\000F\005\000\001\000\000\000\000\000\000\000#�\017�]\000\001\000\000\000\b�F�\017�\000\000\000\000\000\000\000\000\030P\r�\001\000\000\000\002\000\000\000\000�\bŠJt��N\r���\017Ű�\017�T\"\"�\210\032\"�\002\000\000\000\002\000\000\000Ƽ\017�\000�\017�\000\000\000\000\030{\001�`\211\t�\001\000\000\000\f�\017���\017Ũ�\003�`\223\003� \026\002�\223\000\000 \034�\017���\017�8\206#�$\"\"�\000\000\000\000\000P\r�\000\000\000\000\000\000\000\000p�\017ŠJt�<�\017� �\017�"}}

as pitch i ve given 730

but after

ioctl(hCapture->fd, VIDIOC_TRY_FMT, &fmt) call

{type = V4L2_BUF_TYPE_VIDEO_CAPTURE, fmt = {pix = {width = 720,
      height = 480, pixelformat = 842094158, field = V4L2_FIELD_INTERLACED,
      bytesperline = 736, sizeimage = 529920,
      colorspace = V4L2_COLORSPACE_SMPTE170M, priv = 0}, win = {w = {
        left = 720, top = 480, width = 842094158, height = 4}, field = 736,
      chromakey = 529920, clips = 0x1, clipcount = 0, bitmap = 0x0,
      global_alpha = 0 '\0'}, vbi = {sampling_rate = 720, offset = 480,
      samples_per_line = 842094158, sample_format = 4, start = {736, 529920},
      count = {1, 0}, flags = 0, reserved = {0, 0}}, sliced = {
      service_set = 720, service_lines = {{0, 480, 0, 22094, 12849, 4, 0, 736,
          0, 5632, 8, 1, 0 <repeats 12 times>}, {0 <repeats 24 times>}},
      io_size = 0, reserved = {0, 0}},
    raw_data = "�\002\000\000�\001\000\000NV12\004\000\000\000�\002\000\000\000\026\b\000\001", '\0' <repeats 174 times>}}
 

It is

setting pitch 736

please short out the problem

ATTACHMENT : attached one yuv captured frame

pls rename it to .yuv and see the frame

thanxx

kailash