Unusable for me: doing 2K->4K Proteus. Hit Export and get:
Last FFmpeg messages:
Could not find codec parameters for stream 5 (Subtitle: hdmv_pgs_subtitle (pgssub)): unspecified size
Could not find codec parameters for stream 6 (Subtitle: hdmv_pgs_subtitle (pgssub)): unspecified size
Could not find codec parameters for stream 7 (Subtitle: hdmv_pgs_subtitle (pgssub)): unspecified size
Could not find codec parameters for stream 8 (Subtitle: hdmv_pgs_subtitle (pgssub)): unspecified size
Input #0, matroska,webm, from ‘D:/VideoMkv/Videos/S_t01.mkv’:
Decoder (codec hdmv_text_subtitle) not found for input stream #0:9
