How to merge videos from large .png files without quality loss?

Question

Video

I have the following problem:
there are 1178 .png files of size 2500x1250. I want to receive video. I access ffmpeg with the following command:

ffmpeg.exe -framerate 40 -i input file%%4d.png outputfile.mp4

Ffmpeg uses the h264 codec with this command, but the resulting file is not opened by any players (which, as stated, read this codec), except for VLC.
Moreover, other players do not see the true file sizes. Tell me, how can I get an MP4 file that would be read without quality loss?
Maybe it's worth gluing it into an uncompressed .avi (only how and with what?), And then into mp4? How to do it?
More files and higher resolution are planned in the future.

Answer 1

Maybe there are some analogues of ffmpega or other ways for gluing, tell me?

Answer 2

How to convert pictures to video without quality loss?