I am trying to resize a video from
1280x720 for phone viewing.
This is the command I used:
avconv -i input.mkv \ -map 0:v -map 0:a:1 -map 0:s:0 \ # map video, 2nd audio stream, and subtitles -s 1280x720 \ # resize -c:a copy -c:s copy \ # copy audio and subtitles output.mkv`
The output is indeed the correct resolution, but it suffers from artifacts.