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

<p>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.</p>

<p>Thanks</p>

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

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

CC BY-SA 3.0
2018-04-01T07:13:44.923Z
What command did you try?
Gyan
CC BY-SA 3.0
2018-04-02T22:20:15.067Z
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
CC BY-SA 3.0
2018-04-03T05:19:27.573Z
Assuming the lack of space between `MP4` and `-vf` is a typo, command looks ok. What's the issue?
Gyan
CC BY-SA 3.0
2018-04-06T05:34:35.190Z
Ah, but I still have not managed to write the command to downscale the video after encoding the audio ...
smokeyone
<ffmpeg><4k>
how to downscale 4k with ffmpeg
Smokeyone
# how to downscale 4k with ffmpeg

(Asked by: username_0 on 2018-04-01)

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.

Thanks

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

**Tags:** ffmpeg, 4k

> **Comments:**
> **username_1**: What command did you try?  
> **username_0**: 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  
> **username_1**: Assuming the lack of space between `MP4` and `-vf` is a typo, command looks ok. What's the issue?  
> **username_2**: Ah, but I still have not managed to write the command to downscale the video after encoding the audio ...  

---

## 0 answers

