I am using iMX6Q VPU to encode raw video frames captured at 10 FPS to H264 format. While initializing VPU using vpu library I specify the frame rate as 10 in the EncOpenParam.framerateInfo field while issuing vpu_EncOpen() call of vpu library. But the SPS/PPS header which is generated by the VPU does not contain frame rate information.
because of this, after I write the SPS & PPS headers and the encoded video frames to a .h264 file and when playing back the video using VLC player I find that the video is playing faster. I even tired setting frame rate using ENC_SET_FRAME_RATE of vpu_EncGiveCommand() API of vpu library and still it does not help.
I would like to know why the frame rate information is present in SPS and/or PPS headers. Is there a way to introduce it in the header?
The dump of video file info extracted using MediaInfo is given below for reference.
General
Complete name : video1.h264
Format : AVC
Format/Info : Advanced Video Codec
File size : 2.92 MiB
Video
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline@L3.0
Format settings, CABAC : No
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=4
Width : 640 pixels
Height : 352 pixels
Display aspect ratio : 16:9
Color space : YUV
Chroma subsampling : 4:2
Bit depth : 8 bits
Scan type : Progressive
