Add two images before a mp4 and one in the end with ffmpeg I'm trying to make an operation using FFmpeg with just one command to leave the output as lossless as possible.

My intention is to add two images, 5 seconds each, before the mp4 file, add a fade in to the first one of 1 second and add a third image after the video during 5 seconds.

Is it possible to do this on one pass?

I found some bits of code, namely:

ffmpeg -r 25 -loop 1 -t 5 -i "image" -i "video" -f lavfi -t 5 -i aevalsrc=0 \
   -filter_complex "[0:v] [2:a] [1:v] [1:a] concat=n=2:v=1:a=1 [v] [a]" \
   -c:v libx264 -c:a aac -strict -2 -map "[v]" -map "[a]" output.mp4 


and

ffmpeg -i clip.mp4 -vf "fade=in:0:25" -acodec copy clip-out.mp4


But I'm not being able to use them together and I don't know if all those commands are really necessary. Any thoughts?
Make videos from images:

ffmpeg -loop 1 -framerate 24 -t 5 -i image0.png -loop 1 -framerate 24 -t 5 -i image1.jpg -loop 1 -framerate 24 -t 5 -i image2.jpg -f lavfi -i anullsrc=cl=stereo:r=44100 -filter_complex "[0]fade=t=in:duration=1,format=yuv420p[v0];[1]format=yuv420p[v1];[2]format=yuv420p[v2]" -map "[v0]" -map 3 -shortest pre1.mp4 -map "[v1]" -map 3 -shortest pre2.mp4 -map "[v2]" -map 3 -shortest post.mp4


Note that the frame rate, width, height, aspect ratio, pixel format, H.264 profile, timebase, audio channel layout, audio sample rate, stream types, and number of streams of these videos match that of the main video.

Make input.txt:

file 'pre1.mp4'
file 'pre2.mp4'
file 'main.mp4'
file 'post.mp4'


Concatenate with concat demuxer:

ffmpeg -f concat -i input.txt -c copy -movflags +faststart output.mp4