Compress MP4 File

[Jezzz]

Hi. I have MP4 file (1.3 GB) that I want to compress, if I could, to 600-700 MB.

Could I use FFmpeg for that? What is the command line?

Thank you.

[videoAI]

try:
Best Video Converter
it is a bit outdated but it uses FFmpeg, and allows for batch conversion too.

[Sharc]

@Jezzz: Your current video bitrate is 1750kb/s only. Compressing the filesize to to 600MB will leave you with something around 800 kb/s which is probably too low for acceptable AVC quality.
Anyway, here a 2-pass ffmpeg AVC (x264) proposal which you can try and see what you get:

ffmpeg -i "your source" -c:v libx264 -b:v 800k -pass 1 -an -f null NUL ^ 
ffmpeg -i "your source" -c:v libx264 -b:v 800k -pass 2 -c:a copy output.mp4

Alternatively, you may try how it looks when reencoded to HEVC (x265), and possibly reduce the frame size as well to get an acceptabe quality.
Depends on your source as well (motion, details ....)

[Jezzz]

@Jezzz: Your current video bitrate is 1750kb/s only. Compressing the filesize to to 600MB will leave you with something around 800 kb/s which is probably too low for acceptable AVC quality.
Anyway, here a 2-pass ffmpeg AVC (x264) proposal which you can try and see what you get:

ffmpeg -i "your source" -c:v libx264 -b:v 800k -pass 1 -an -f null NUL ^ 
ffmpeg -i "your source" -c:v libx264 -b:v 800k -pass 2 -c:a copy output.mp4

Alternatively, you may try how it looks when reencoded to HEVC (x265), and possibly reduce the frame size as well to get an acceptabe quality.
Depends on your source as well (motion, details ....)

What is the command line to reencoded to HEVC (x265) and reduce the frame size?

Thank you.

[Sharc]

@Jezzz: Your current video bitrate is 1750kb/s only. Compressing the filesize to to 600MB will leave you with something around 800 kb/s which is probably too low for acceptable AVC quality.
Anyway, here a 2-pass ffmpeg AVC (x264) proposal which you can try and see what you get:

ffmpeg -i "your source" -c:v libx264 -b:v 800k -pass 1 -an -f null NUL ^ 
ffmpeg -i "your source" -c:v libx264 -b:v 800k -pass 2 -c:a copy output.mp4

Alternatively, you may try how it looks when reencoded to HEVC (x265), and possibly reduce the frame size as well to get an acceptabe quality.
Depends on your source as well (motion, details ....)

What is the command line to reencoded to HEVC (x265) and reduce the frame size?

Thank you.

for x265 try

ffmpeg -i "your source" -c:v libx265 -b:v 800k -x265-params pass=1 -an -f null NUL && ^ 
ffmpeg -i "your source" -c:v libx265 -b:v 800k -x265-params pass=2 -c:a copy output.mp4

or - if necessary - with downscaling to height 480 for example:

ffmpeg -i "your source" -c:v libx265 -b:v 800k -x265-params pass=1 -an -vf scale=-2:480 -f null NUL && ^ 
ffmpeg -i "your source" -c:v libx265 -b:v 800k -x265-params pass=2 -c:a copy -vf scale=-2:480 output.mp4

[Santiago]

Shutter Encoder and HandBrake are free.