hello!
DEMO2020.mp4 is 25fps @3995 kb/s
DEMO2020_1.mp4 is 30fps @2908 kb/s
choose what suits you the best;

thanks.




Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'g:\temp\DEMO2020.mp4':
 Metadata:
   major_brand     : mp42
   minor_version   : 0
   compatible_brands: mp42mp41
   creation_time   : 2020-04-02T21:42:27.000000Z
 Duration: 00:06:43.33, start: 0.000000, bitrate: 4060 kb/s
   Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv), 640x480 [SAR 1:1 DAR 4:3], 3995 kb/s, 25 fps,
25 tbr, 25k tbn, 50 tbc (default)
   Metadata:
     creation_time   : 2020-04-02T21:42:27.000000Z
     handler_name    : Mainconcept MP4 Video Media Handler
     encoder         : AVC Coding
   Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 61 kb/s (default)
   Metadata:
     creation_time   : 2020-04-02T21:42:27.000000Z
     handler_name    : Mainconcept MP4 Sound Media Handler


Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'g:\temp\DEMO2020_1.mp4':
 Metadata:
   major_brand     : mp42
   minor_version   : 0
   compatible_brands: mp42mp41
   creation_time   : 2020-04-02T21:20:18.000000Z
 Duration: 00:06:43.31, start: 0.000000, bitrate: 2974 kb/s
   Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv), 640x480 [SAR 1:1 DAR 4:3], 2908 kb/s, 30 fps,
30 tbr, 30k tbn, 60 tbc (default)
   Metadata:
     creation_time   : 2020-04-02T21:20:18.000000Z
     handler_name    : Mainconcept MP4 Video Media Handler
     encoder         : AVC Coding
   Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 61 kb/s (default)
   Metadata:
     creation_time   : 2020-04-02T21:20:18.000000Z
     handler_name    : Mainconcept MP4 Sound Media Handler