Exit code 1

[wben73]

Webmconverter works on my old laptop... every time i try to convert anything i keep getting exit code 1
i have installed ffmpeg prior on this laptop but decided to use this one which is more straightforward=

Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2mp41
encoder : Lavf58.45.100
Duration: 00:04:54.57, start: 0.000000, bitrate: 449 kb/s
Stream #0:0(und): Video: none (av01 / 0x31307661), 1280x720, 316 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 24k tbc (default)
Metadata:
handler_name : ISO Media file produced by Google Inc.
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
Metadata:
handler_name : ISO Media file produced by Google Inc.
[buffer @ 04b71da0] Unable to parse option value "-1" as pixel format
Last message repeated 1 times
[buffer @ 04b71da0] Error setting option pix_fmt to value -1.
[graph 0 input from stream 0:0 @ 02a15ce0] Error applying options to the filter.
Error opening filters!

ffmpeg.exe exited with exit code 1. That's usually bad.
If you have no idea what went wrong, open an issue on GitHub and copy paste the output of this window there.