[FFmpeg-user] Adding black border to RHS of video

[Liam Condron-Farnos]

>Hi,
>Problem solved.  The following command in imagemagik does the job on each
>image.
>convert -size 1920x1080 xc:black -page +0+0 img001.jpg -layers flatten
>test.jpg

oh god what, no no just use the pad video filter

    ffmpeg -i input.mp4 -filter:v 'pad=iw+300:ih:0:0' -c:a copy -c:v
libx264 -reset veryfast output.mp4

See the documentation: http://ffmpeg.org/ffmpeg-filters.html#pad