How can I change slice_type which is show in Elecard stream analyzer using ffmpeg?

I'm not ffmpeg and encodding expert and am trying to encode a MP4 file to MPEG-4 h264 .ts file.

When Elecard stream analyzer is analyzing my result .ts file, it shows slice_type = 7 for all of i-frames as you can see in the attached screenshot.

How can I change all these to slice_type = 2?

My ffmpeg command:

-i Source.mp4 \
-filter:v 'setpts=0+PTS-STARTPTS' -metadata:s:v:0 start_time=0 \
-f adts -c:a libfdk_aac  -profile:a aac_he  -strict -2 -ar 48000 -b:a 48k \
-f mpegts -c:v libx264  -vbsf h264_mp4toannexb -strict experimental -    profile:v main -level:v 3.0 -preset:v slow -movflags faststart -pat_period 100 \
-x264opts nal-hrd=cbr:force-cfr=1 -crf 25 -vf scale=w=640:h=360 -aspect 16:9 \
-bf 1  -sc_threshold 0 -keyint_min 2*25 -g 2*25 \
-force_key_frames "expr:gte(t,n_forced*50)" -max_muxing_queue_size 1500k \
-coder 1  -refs 2 \
-b:v 750k -minrate 750k -maxrate 750k -bufsize 1500k \
-vsync 1 -framerate 25000/1001 \
-x264opts "bitrate=750:vbv-maxrate=750:vbv-bufsize=1500"\
-pix_fmt yuv420p  -r 25 -x264opts force-cfr \
-mbs_per_slice 1 -y dest.ts

Solution

If you look at the H.264 standard you'll learn the slice type 7 and 2 are both I slices. If you encounter a slice type 7 that means all other slices of this picture are I slices. Most likely your I frame is an IDR frame. If you don't want IDR frame - I'd try to encode your H.264 as open GOP. I am not sure how much control ffmpeg gives over x264 but I'd try something like --open-gop.