Can anyone recommend a way to upscale recorded videos to HD without blurring? I've been using ffmpeg, and this document I just found suggests that too:https://hg.tuxfamily.org/mercurialroot/ ... ording.txt
However, the videos that are produced have a lot of dropped frames. This happens regardless of which codec I use, and seems to be associated with the error message:
"Non-monotonous DTS in output stream 0:0; previous: 950272, current: 950272; changing to 950273. This may result in incorrect timestamps in the output file."
Which ffmpeg prints hundreds of times during the process. It's not clear if this is a problem with the videos Hatari produces, or with ffmpeg.
If I scale the video using the video converter built into VLC, the dropped frames problem does not occur – however, I have yet to find out how to use nearest neighbour sampling to avoid blurring.