[kwlug-disc] OT: Sensible Transcode/Handbrake settings for Blu-ray files

[Charles M]

I'll try this tonight Khalid. Thanks to both you and Jeff! I love
having the quality of Blu-ray, but yeah, 45GB (one of the Hobbit
movies) is just crazy. As a comparison with DVD. I have around 700
DVDs (most I've picked up for $1 over many years). Ripped they took up
less than 700GB using the Handbrake default settings. Just over 70
Blu-ray discs filled my 3TB drive to 98%. Buying the 8TB drive was a
sensible decision because a: I've been able to merge all the media on
to 1 drive instead of 3, and b) I now have a non-sensible backup (the
3 drives - at least it's a backup).

On Fri, Jan 5, 2018 at 9:55 AM, Khalid Baheyeldin <kb at 2bits.com> wrote:
> I had a similar problem when I started recording from the ATSC antenna using
> a cheap PVR.
>
> The recording are in .mts format, and I convert them into .mkv using aconv,
> which is part of libav-tools, which is the fork of ffmpeg used on Ubuntu.
>
> I have a script that renames files and reduce them.
>
> The relevant part of the script is this:
>
> PATH_IN=something.mts
> PATH_OUT=something.mkv
> avconv -v fatal -y -i $PATH_IN  -c:v libx264 -crf 22 -s hd720 -preset
> veryfast -acodec copy $PATH_OUT
>
> The reduction in size is amazing. Instead of 60GB per hour, I can reduce 10X
> down to
> just ~ 6GB or so, with no noticeable loss of quality at all (to my eyes).
>
> Perhaps you can try the above with an .mkv file and see if it makes a
> difference.
>
> On Fri, Jan 5, 2018 at 9:28 AM, Charles M <chaslinux at gmail.com> wrote:
>>
>> Good chilly morning KWLUG! I've been ripping DVDs and Blu-ray discs
>> for several years now for use on the KODI server attached to our
>> living room TV and shared with a couple of Android boxes in other
>> rooms. During that time I've been battling with storage problems. DVDs
>> are not so much of an issue, the file sizes are small, and the quality
>> is acceptable for the medium. Blu-ray files are the real problem. I
>> use MakeMKV on Linux (licensed user, was worth it) to rip Blu-rays.
>> MakeMKV is great, but the resulting Blu-ray files are sometimes very
>> large (45GB).
>>
>> I started re-encoding a file once with Handbrake, but stopped once I
>> realized it was going to take over an hour to re-encode it on my
>> A8-5600k (16GB, NVidia GeForce 650Ti). Part of the reason I stopped it
>> was because I had no idea if:
>>
>> * The video would retain a decent amount of detail (can you still see
>> details in the face/eyes)
>> * The size would be much different? Blu-rays are already highly compact
>> AFAIK
>> * Would the subtitles still be in the resulting file? (subtitles are
>> important for me)
>>
>> My solution up to this point has just been to throw more storage at
>> the problem. At first it was adding a 3TB drive to the existing 2TB
>> drive, then another 3TB drive, before finally breaking down and buying
>> an 8TB drive. At the moment I'm just using the 8TB drive, with the 2,
>> 3, and 3 as external backup drives. I'm embarrassed to say I'm running
>> out of space on the 8TB drive (I blame Game of Thrones).
>>
>> Ideally wondering if someone has a script to batch process files using
>> ffmpeg or transcode with reasonable settings for quality?
>>
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>
>
>
>
> --
> Khalid M. Baheyeldin
> 2bits.com, Inc.
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-- 
Charles McColm
Blog: http://www.charlesmccolm.com/
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