Hi @joanxie
I have a feeling you misunderstood what I meant. I need to convert H.264 video to YUV video.
My test steps are as follows:
1. Download MR5_TANDBERG_C.zip and unzip it
2. cd MR5_TANDBERG_C directory

3. convert H.264 to YUV:
/unit_tests/V4L2_VPU/mxc_v4l2_vpu_enc.out \
parser --key 0 --name MR5_TANDBERG_C.264 --fmt h264 \
decoder --key 1 --source 0 \
convert --key 2 --source 1 --fmt I420 \
ofile --key 3 --source 2 --name output.dec.yuv

4. The md5sum command compares the MD5 checksum:

The check value of the YUV video is the same after the correct conversion. However, the MD5 checksum is different now.
We can use ffmpeg to achieve the conversion, the command:
ffmpeg -i MR5_TANDBERG_C.264-pix_fmt yuv420p output.yuv

So we want to find out why the VPU failed to convert this video. Thank you very much!