Compress mp4 using FFMPEG

ffmpeg-compress-mp4

$ ffmpeg -i input.mp4 -vcodec h264 -acodec mp2 output.mp4

It increased the size instead of descreasing ?

Worked well for me, from ~67MB to ~14MB. Thanks!

Edit: Appears to not play in IE. Blast.

Compressed from 14.1 mb to 4.9 mb. But lost sound( how can i fix it? Any options?

@ankurhora This code basically does transcoding, hence if the input video is already compressed, the output video could be larger than the input one. To achieve compression, we can reduce the bit rate. Look at the code here https://gist.github.com/ksharsha/b06d184391290bc3b87fdadadb73c5bc#file-ffmpeg-compress

@BeetLab I faced the same problem. Changing -acodec mp2 to -acodec mp3 did the trick for me.

ffmpeg -i input.mp4 -vcodec h264 -acodec aac output.mp4 brought mine from 86457565 Bytes > 17195361 Bytes ~17MB ...wow, quality is really not even noticeably different. Thank you. -acodec mp3 was slightly smaller at 17195155. Now I'm looking to get my webm file down in size, hoping in a similar way.

@TryTryAgain It works pretty well, and do it twice can compress more.

It compress from 450 MB to 60 MB!
This is amazing.
But what is the thing that this command remove? Since I can't find any difference. Is the bitrate decreased?

worked great, from 294 MB to 46.7 MB and still good quallity

Thanks!

Worked not expected.. I used 68.5Mb and get 65 MB ..

Thanks!

220 MB to 21MB

coder moment

163mb to 60mb. This worked

5Gb mov file (from after effects) downgraded to 250 Mb. Perfect!

De 1.06 GB a 229 MB. Genial!

I tried to have the same code but doing the bulk compress but it didn't work anyone can help?'

for %%a in ("*.mp4") do ffmpeg -i "%%a" -i vcodec h264 -b:v 700k -acodec mp3 "FB\%%~na.mp4"

try:

for %%a in ("*.mp4") do ffmpeg -i "%%a" -vcodec h264 -b:v 700k -acodec mp3 "FB%%a~na.mp4"

Worked as expected

ffmpeg -i input.mp4 -vcodec h264 -acodec aac output.mp4

Before 32.8 MB

After 6.8 MB

4,40 GB to 3,84 GB... I expected better.

Woah, 300mb to 8mb

I have 33MB and it command do a file more big...

3.2gb to 320mb. And quality difference is very hard to see!

ffmpeg -i input.mp4 -vcodec libx265 -acodec aac -crf 23 output.mp4

Did the trick for me.

Before 400 mb

After 150 mb

ffmpeg -i input.mp4 -vcodec h264 -acodec mp2 output.mp4

Before : 124,2 mb

After 113,4 mb 👎

Its not work for me, I want reduce an webm video and 616mb to 480mb and very time spended =/

Here 14,9mb to 2,9mb - 00:56 yuv420p 480x480

Worked! Thanks a lot

used ffmpeg -i input.mp4 -vcodec h264 -acodec aac output.mp4
Before 738MB
After 192MB
with no quality loss + flawless sound!

Worked. Before: 1.6 MB. After: 132 KB. However, it doesn't work on videos with a width or height that is not divisible by 2. Not a big issue though.

Great!!

I tried compressing following this thread: https://gist.github.com/ksharsha/b06d184391290bc3b87fdadadb73c5bc

ffmpeg -i video.mp4 -vcodec h264 -b:v 1000k -acodec mp3 output.mp4

and went from 1.1 GB to 69 MB!!!

So, first all thanks to the developers and coder. I've been using FFMPEG with the Sick Beard MP4 automator and it's working beautifully! Now as I'm watching it work, I wish I could shrink the file size down when it auto converts. So, I stumbled upon this thread. i am a total noob to all of this so forgive my ignorance, but where do I add this script to make FFMPEG compress as the automator is working? I'm running Sonarr, Radarr, SabNZBd, and of course the Sick Beard MP4 Automator scripts.

Thanks in advance and again sorry for my ignorance if this is a totally stupid question!

try:

for %%a in ("*.mp4") do ffmpeg -i "%%a" -vcodec h264 -b:v 700k -acodec mp3 "FB%%a~na.mp4"

Does it work?

27 GB -> 9.56 GB 👍

with mp3 as audio codec 832MB -> 53.1MB
thanks a lot!

Great
from 274 to 36
Thanks
(But changed mp2 to mp3)

I guess this works great for large size videos. I got my video from 750 mb to 57 mb. Thanks.

This is legit! Thanks!

pls how do i impliment this

Try this:
ffmpeg -i input.mp4 -c:v libx265 -preset veryfast -tag:v hvc1 -vf format=yuv420p -c:a copy output.mp4

or this if you want to decrease the resolution and bitrate, it should be much more smaller than above:
ffmpeg -i input.mp4 -c:v libx265 -preset veryfast -tag:v hvc1 -b:v new_bitrate -vf scale=new_width:new_height,format=yuv420p -c:a copy output.mp4
e.g. ffmpeg -i input.mp4 -c:v libx265 -preset veryfast -tag:v hvc1 -b:v 800k -bufsize 1200k -vf scale=1080:1920,format=yuv420p -c:a copy output.mp4

of course, you can decrease the bitrate of audio stream either:
ffmpeg -i input.mp4 -c:v libx265 -preset veryfast -tag:v hvc1 -b:v 800k -bufsize 1200k -vf scale=1080:1920,format=yuv420p -b:a 128k output.mp4

If your device does not support h265, just change the -c:v libx265 into -c:v libx264 and remove the -tag:v hvc1.

This worked really well for me, made my videos much smaller and the quality was still comparable.

However, I'm curious if you could expand on how the "h264" line is compressing? Is it using a default CRF level? I found that instead compressing using "libx264 -crf 10" produced a MUCH larger video.

Worked! Thanks a lot

used ffmpeg -i input.mp4 -vcodec h264 -acodec aac output.mp4
Before 738MB
After 192MB
with no quality loss + flawless sound!

Thanks for sharing this trick! Worked for me as well. I had one video file successfully compressed to 253.9MB from 950.1MB.

updated version

But using 'ffmpeg -i input.mp4 -vcodec libx265 -crf 28 output.mp4' it reduced to 105MB which is much better.

top 👍

711M input.MP4
101M output.mp4
Awesome (y)

19 MB input
39 MB output
👎

19 MB input
39 MB output
👎

Have you found any solution?

280MB to 80MB (71% less) thanks

280MB to 80MB (71% less) thanks

Can you show your command?

I used This : ffmpeg -i Input.mov -c:v libx265 -preset veryfast -tag:v hvc1 -vf format=yuv420p -c:a copy output.mp4 ----- and went from 301 mb To 30.9 mb ---- with a littel bit of quality loss. but it works for Me if I want to get my video to Facebook.
for youtube I would use : ffmpeg -i input.mp4 -vcodec h264 -acodec aac output.mp4 --- probably no quality Loss. So I'm happy 👍

Worked. Before: 1.6 MB. After: 132 KB. However, it doesn't work on videos with a width or height that is not divisible by 2. Not a big issue though.
Divisible or not it still didnt work for me. I had a 6min 1920x1040 file at 186MB and it only went down to 123MB

712 mb gopro video of office down to 86 mb! almost 1/10th the size!
command ffmpeg -i input.mp4 -vcodec h264 -acodec aac output.mp4

not working for me i am saving the file from ipcam and need to reduce the size

original size is 13 mb
ffmpeg -i input.mp4 -vcodec h264 -acodec aac output.mp4
after size is 19 mb

how was that good! using that, decrease 86mb to 64mb. thank you all.

How to get to know about the size of the file when we will apply this compression (before compression)?

Try Using Handbrake

…

On Mon, 30 Nov 2020 at 17:40, Mahmood Hussain Bhat ***@***.***> wrote: *@Mahmood-Hussain* commented on this gist. ------------------------------ How to get to know about the size of the file when we will apply this compression (before compression)? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <https://gist.github.com/277d136f68b028e22bed#gistcomment-3545035>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AP7T2XPWHMDPMTEFXXALRV3SSPDGBANCNFSM4HJDPZHQ> .

-- God bless

Video-Format: MP4

Before: 6.02 GB
After: 1.02 GB

Before: 60.0MB
After: 96.3MB
Didn't work for me! 🙁

LOL

…

On Thu, 4 Mar 2021 at 00:10, ochen1 ***@***.***> wrote: ***@***.**** commented on this gist. ------------------------------ Before: 60.0MB After: 96.3MB — You are receiving this because you commented. Reply to this email directly, view it on GitHub <https://gist.github.com/277d136f68b028e22bed#gistcomment-3652792>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AP7T2XLII6J2VMSN4GXDQ6TTB26X7ANCNFSM4HJDPZHQ> .

-- God bless

didn't work for me xD

I'm using the -crf parameter

ffmpeg -i output_fr_20210322020810.avi -c:v libx264 -crf 28 output_fr_20210322020810.mp4

it is working for me. depending on your use case, you may want to decrease the crf value for higher quality and large file size, or increase it for smaller file size

Thanks for the tip!

…

On Tue, 23 Mar 2021 at 19:04, 7thstorm ***@***.***> wrote: ***@***.**** commented on this gist. ------------------------------ I'm using the -crf parameter ffmpeg -i output_fr_20210322020810.avi -c:v libx264 -crf 28 output_fr_20210322020810.mp4 it is working for me. depending on your use case, you may want to decrease the crf value for higher quality and large file size, or increase it for smaller file size — You are receiving this because you commented. Reply to this email directly, view it on GitHub <https://gist.github.com/277d136f68b028e22bed#gistcomment-3677043>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AP7T2XLQ5DKP2BWMWH6ZLKTTFDJ4PANCNFSM4HJDPZHQ> .

-- God bless

I used h.265 codec and the file quality remaind while drop down from 3.31GB to 1.36GB (41.09%), I also used "acodec copy" in order to keep the original audio.

ffmpeg -i input.mp4 -vcodec libx265 -acodec copy output.mp4

didn't work for me xD

Try it using libx265 instead of h264

Commands using Linux with ffmpeg to shrinking big MP4 video file to smaller sizes

• ffmpeg -i input.mp4 -vcodec h264 -acodec mp2 out.mp4
• • 3.6 Gb to 556 Mb, great quality 🥇
• ffmpeg -i input.mp4 -s 1280x720 -acodec copy -y output.mp4
• • 3.6 Gb to 62 Mb, quality "good enough"/acceptable 👍
• ffmpeg -i input.mp4 -vcodec h264 -b:v 1000k -acodec mp3 output.mp4
• • 3.6 Gb to 30 Mb, very shitty quality 💩

ffmpeg -i input.mp4 -vcodec h264 -acodec aac output.mp4
13.6 GB recorded from obs to 197MB

Thank you guys!

Compressed my video from 9mb to 2mb, but when I opened it 80% of the video was missing. I guess that's one way to compress a video.

help i tried this and smoke came out of my laptop and all the birds fell out of the sky

video works great though, thanks

folder and subfolder
echo START %date% %time% >> C:\zv.txt && FORFILES /s /p . /m "*.mp4" /C "cmd /c ffmpeg -i @file -vcodec h264 -acodec aac v_@file && for %I in (v_@file) do (echo @path;@fsize;%~zI) >> C:\zv.txt && del @file && ren v_@file @file" && echo ==FINISH== %date% %time% >> C:\zv.txt && rundll32 user32.dll,MessageBeep && msg "%username%" video comp done