I have been searching all the web on how to downscale 4k video so that it can play on my non 4k TV.

My 4k video has a resolution of 3840 x 2160 with an audio format of pcm_s16be in a mp4 container. I am trying to convert it to 1920 x 1080 with an audio format of aac. I use Lubuntu and have been experimenting with the command lines without success.


Update -- After further searching I found this code which converts the audio from pcw to aac

ffmpeg -y -i C0010.MP4 -vcodec copy -strict experimental -c:a aac output-fileC0010.MP4

  • 5
    What command did you try? – Gyan Apr 1 '18 at 7:13
  • I have lost track of the number of commands I have tried but here is an example - ffmpeg -i output-file.MP4-vf scale=iw/2:-1 outputt.mp4 – Smokeyone Apr 2 '18 at 22:20
  • 2
    Assuming the lack of space between MP4 and -vf is a typo, command looks ok. What's the issue? – Gyan Apr 3 '18 at 5:19
  • Ah, but I still have not managed to write the command to downscale the video after encoding the audio ... – smokeyone Apr 6 '18 at 5:34

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