Joining two MP4 files encoded differently?

[yetanotherlogin]

Hello

I tried joining those two MP4 files with different applications, but none worked because the video streams were encoded differently:

FILE #1

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'FILE.1.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 1970-01-01T00:00:00.000000Z
    encoder         : Lavf52.92.0
  Duration: 00:12:55.38, start: 0.000000, bitrate: 539 kb/s
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x480,697 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 59.94 tbc (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:00.000000Z
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:00.000000Z
      handler_name    : SoundHandler

FILE #2

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'FILE.2.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 1970-01-01T00:00:00.000000Z
    encoder         : Lavf52.92.0
  Duration: 00:10:05.02, start: 0.000000, bitrate: 361 kb/s
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 296x224 [SAR 1:1 DAR 37:28], 359 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:00.000000Z
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 95 kb/s (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:00.000000Z
      handler_name    : SoundHandler

Is there a way to join them somehow?

Thank you.

[netmask56]

You will need to re-encode them with identical parameters to successfully join them.

[yetanotherlogin]

Thank you.

Can ffmpeg/ffprobe tell me what settings to use to reencode?

Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x480, 697 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 59.94 tbc (default)

→

Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 296x224 [SAR 1:1 DAR 37:28], 359 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc (de
fault)