ffmpeg exited with exit code 1

[nezaex]

Arguments: -i "C:\Users\malte\Desktop\webm\newpsp.mp4" -an -c:v libvpx -crf 32 -b:v 900K -threads 1 -metadata title="newpsp" -f webm -y "C:\Users\malte\Desktop\webm\newpsp1.webm"
ffmpeg version N-62162-gec8789a Copyright (c) 2000-2014 the FFmpeg developers
built on Apr 4 2014 22:01:36 with gcc 4.8.2 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 52. 74.100 / 52. 74.100
libavcodec 55. 57.100 / 55. 57.100
libavformat 55. 36.101 / 55. 36.101
libavdevice 55. 11.100 / 55. 11.100
libavfilter 4. 3.100 / 4. 3.100
--- FFMPEG HAS EXITED ---
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 02a4e480] Could not find codec parameters for stream 0 (Video: none (vp09 / 0x39307076), 1280x720, 355 kb/s): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\malte\Desktop\webm\newpsp.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2mp41
encoder : Lavf58.76.100
Duration: 00:01:08.27, start: 0.000000, bitrate: 488 kb/s
Stream #0:0(eng): Video: none (vp09 / 0x39307076), 1280x720, 355 kb/s, SAR 1:1 DAR 16:9, 30.01 fps, 30 tbr, 16k tbn, 16k tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
Metadata:
handler_name : SoundHandler
[buffer @ 04da3480] Unable to parse option value "-1" as pixel format
Last message repeated 1 times
[buffer @ 04da3480] Error setting option pix_fmt to value -1.
[graph 0 input from stream 0:0 @ 02a4de40] 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.