Removing subtitles doesn't make file sizes much smaller

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kelsien
Posts: 1
Joined: Sat Apr 11, 2020 1:26 pm

Removing subtitles doesn't make file sizes much smaller

Post by kelsien » Sat Apr 11, 2020 1:27 pm

Hi. I'm new to using MakeMKV. I'm working on ripping some of my tv shows off dvds. I ripped 6 episodes from 1 disc and they are 4.94 GB in total. Then, I realized I could unselect the subtitle tracks. So I re-ripped them, but the total size only went down to 4.92 GB. Is this typical? Is there another way to reduce the file size? I plan on running them through Handbrake to compress them a bit (as found in other threads here). Thanks for the help!

Woodstock
Posts: 7485
Joined: Sun Jul 24, 2011 11:21 pm

Re: Removing subtitles doesn't make file sizes much smaller

Post by Woodstock » Sun Apr 12, 2020 12:04 am

Subtitles take up very little space in video, with occasional exceptions.

Leaving them out would primarily be a benefit if you have a player that displays them when you don't want them.
How to aid in finding the answer to your problem: https://www.makemkv.com/faq/item/8

Bucher
Posts: 1
Joined: Tue Sep 15, 2020 7:19 am

Re: Removing subtitles doesn't make file sizes much smaller

Post by Bucher » Tue Sep 15, 2020 7:23 am

Subtitles are quite often in .srt format (plain text). I just reencoded videos with Handbrake. Btw, x265 is more size-efficient in comparison to x264.

Woodstock
Posts: 7485
Joined: Sun Jul 24, 2011 11:21 pm

Re: Removing subtitles doesn't make file sizes much smaller

Post by Woodstock » Tue Sep 15, 2020 1:13 pm

Actually, text-based subtitles are rare on commercial DVD and BD sources.

But the image-based subtitles uses on DVD (VOBSUB) and BD (PGS) are actually pretty space-efficient; you have a transparent image with a limited color pallet compressed in a manner similar to GIF or PNG encoding, a time to start displaying it, and a duration for how long to display it.
How to aid in finding the answer to your problem: https://www.makemkv.com/faq/item/8

dcoke22
Posts: 38
Joined: Wed Jul 22, 2020 11:25 pm

Re: Removing subtitles doesn't make file sizes much smaller

Post by dcoke22 » Tue Sep 15, 2020 2:55 pm

As an example, I looked at a MKV rip of a DVD movie I have using MediaInfo.

The total size is 5.66GiB.
The video is 5.02GiB of that total.
The AC-3 5.1 audio track of 370MiB.
There are two stereo AC-3 audio tracks at 132MiB each.
There are 3 subtitle tracks. The smallest is 3.73MiB. The largest is 6.89MiB.

Compressing your rips is a good way to save space. Also, external hard drives can often be had for less than $20 per terabyte (in the US at least).

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