为什么RK3588通过v4l2-ctl对摄像头进行取流测试会失败呢

问题描述及复现步骤:

通过v4l2-ctl对摄像头进行取流测试，但输出文件大小为0，没有保存任何数据。

使用SDK版本为：rk3588_repo_sdk_v1.0.2a.7z， Bundle：rk3588-v1.0.2a-to-v1.0.2b.7z； rk3588-v1.0.2b-to-v1.0.2c.7z
编译为BuildRoot系统和Debian系统测试结果相同。

测试命令如下：

v4l2-ctl -d /dev/video0 --set-fmt-video=width=640,height=480,pixelformat=NV12 --stream-mmap=3 --stream-to=/tmp/out2.yuv --stream-count=20 --stream-poll --verbose

输出结果：

VIDIOC_QUERYCAP: ok
VIDIOC_G_FMT: ok
VIDIOC_S_FMT: ok
Format Video Capture Multiplanar:
Width/Height      : 640/480
Pixel Format      : 'NV12' (Y/CbCr 4:2:0)
Field             : None
Number of planes  : 1
Flags             :
Colorspace        : Default
Transfer Function : Default
YCbCr/HSV Encoding: Default
Quantization      : Default
Plane 0           :
Bytes per Line : 640
Size Image     : 460800
VIDIOC_REQBUFS returned 0 (Success)
VIDIOC_QUERYBUF returned 0 (Success)
VIDIOC_QUERYBUF returned 0 (Success)
VIDIOC_QUERYBUF returned 0 (Success)
VIDIOC_QBUF returned 0 (Success)
VIDIOC_QBUF returned 0 (Success)
VIDIOC_QBUF returned 0 (Success)
VIDIOC_STREAMON returned 0 (Success)
cap dqbuf: 0 seq:      0 bytesused: 460800 ts: 3662.352325 delta: 3662352.325 ms (ts-monotonic, ts-src-eof)
cap dqbuf: 1 seq:      1 bytesused: 460800 ts: 3662.385671 (ts-monotonic, ts-src-eof)
cap dqbuf: 2 seq:      2 bytesused: 460800 ts: 3662.418945 (ts-monotonic, ts-src-eof)
cap dqbuf: 0 seq:      3 bytesused: 460800 ts: 3662.452362 (ts-monotonic, ts-src-eof)
cap dqbuf: 1 seq:      4 bytesused: 460800 ts: 3662.485613 fps: 30.01 (ts-monotonic, ts-src-eof)
cap dqbuf: 2 seq:      5 bytesused: 460800 ts: 3662.518964 fps: 30.00 (ts-monotonic, ts-src-eof)
cap dqbuf: 0 seq:      6 bytesused: 460800 ts: 3662.552390 fps: 29.99 (ts-monotonic, ts-src-eof)
cap dqbuf: 1 seq:      7 bytesused: 460800 ts: 3662.585610 fps: 30.01 (ts-monotonic, ts-src-eof)
cap dqbuf: 2 seq:      8 bytesused: 460800 ts: 3662.618955 fps: 30.00 (ts-monotonic, ts-src-eof)
cap dqbuf: 0 seq:      9 bytesused: 460800 ts: 3662.652361 fps: 30.00 (ts-monotonic, ts-src-eof)
cap dqbuf: 1 seq:     10 bytesused: 460800 ts: 3662.685610 fps: 30.00 (ts-monotonic, ts-src-eof)
cap dqbuf: 2 seq:     11 bytesused: 460800 ts: 3662.719061 fps: 29.99 (ts-monotonic, ts-src-eof)
cap dqbuf: 0 seq:     12 bytesused: 460800 ts: 3662.752365 fps: 30.00 (ts-monotonic, ts-src-eof)
cap dqbuf: 1 seq:     13 bytesused: 460800 ts: 3662.785607 fps: 30.00 (ts-monotonic, ts-src-eof)
cap dqbuf: 2 seq:     14 bytesused: 460800 ts: 3662.818992 fps: 30.00 (ts-monotonic, ts-src-eof)
cap dqbuf: 0 seq:     15 bytesused: 460800 ts: 3662.852359 fps: 30.00 (ts-monotonic, ts-src-eof)
cap dqbuf: 1 seq:     16 bytesused: 460800 ts: 3662.885608 fps: 30.00 (ts-monotonic, ts-src-eof)
cap dqbuf: 2 seq:     17 bytesused: 460800 ts: 3662.918945 fps: 30.00 (ts-monotonic, ts-src-eof)
cap dqbuf: 0 seq:     18 bytesused: 460800 ts: 3662.952395 fps: 30.00 (ts-monotonic, ts-src-eof)
cap dqbuf: 1 seq:     19 bytesused: 460800 ts: 3662.985658 fps: 30.00 (ts-monotonic, ts-src-eof)