Converting bluray movie files to low size files

[AndreL]

I'm getting movie file that are of high quality high res and large size files but I want to convert them to something that won't take up a lot of space but kinda keep the quality of the movie. With a file size range of 1-1.5 Gig and if need be 2 Gig but only on the movies that really.
Here is the media info on one of the files

General
Unique ID                        : 175402680536199287503279639488007528482 (0x83F553D5892059F3A6BABA905DB86022)
Complete name                    :dp-aao.x264.mkv
Format                           : Matroska
Format version                   : Version 2
File size                        : 4.37 GiB
Duration                         : 1h 30mn
Overall bit rate                 : 6 915 Kbps
Encoded date                     : UTC 2009-11-09 22:00:27
Writing application              : mkvmerge v2.9.7 ('Tenderness') built on Jul  1 2009 18:43:35
Writing library                  : libebml v0.7.7 + libmatroska v0.8.1

Video
ID                               : 1
Format                           : AVC
Format/Info                      : Advanced Video Codec
Format profile                   : High@L4.1
Format settings, CABAC           : Yes
Format settings, ReFrames        : 5 frames
Codec ID                         : V_MPEG4/ISO/AVC
Duration                         : 1h 30mn
Bit rate                         : 6 467 Kbps
Width                            : 1 280 pixels
Height                           : 720 pixels
Display aspect ratio             : 16:9
Frame rate                       : 23.976 fps
Color space                      : YUV
Chroma subsampling               : 4:2:0
Bit depth                        : 8 bits
Scan type                        : Progressive
Bits/(Pixel*Frame)               : 0.293
Stream size                      : 4.00 GiB (92%)
Writing library                  : x264 core 68 r1183M f21daff
Encoding settings             
: cabac=1 / ref=5 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=8 / 
psy_rd=1.0:0.0 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 /
 cqm=0 / deadzone=21,11 / chroma_qp_offset=-2 / threads=12 / nr=0 / decimate=1 / 
mbaff=0 / bframes=3 / b_pyramid=1 / b_adapt=1 / b_bias=0 / direct=1 / wpredb=1 / 
keyint=250 / keyint_min=25 / scenecut=40 / rc=2pass / bitrate=6467 / ratetol=1.0 / 
qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / 
ip_ratio=1.40 / pb_ratio=1.30 / aq=1:1.00
Language                         : English
Default                          : Yes
Forced                           : No

Audio
ID                               : 2
Format                           : AC-3
Format/Info                      : Audio Coding 3
Mode extension                   : CM (complete main)
Codec ID                         : A_AC3
Duration                         : 1h 30mn
Bit rate mode                    : Constant
Bit rate                         : 448 Kbps
Channel(s)                       : 6 channels
Channel positions                : Front: L C R, Side: L R, LFE
Sampling rate                    : 48.0 KHz
Bit depth                        : 16 bits
Compression mode                 : Lossy
Stream size                      : 290 MiB (6%)
Language                         : English
Default                          : Yes
Forced                           : No

What part of the profile of x256 do I need to edit or if I need to convert to a new codec no problem it'll just take longer I think.
And most of them look like this but again I just need to reduce the file size

Thank in advance

[isapc]

Reduce your bitrate to 2600 or 2700

[AndreL]

Just read that I can use the same codec and lower the bit quality the file size will reduce
but what will get the file size down to 1.3Gb.
Also is there a program that will give you and file size quote before the file conversion the one I have does it but its very vague

[redwudz]

Use a bit rate calculator, like this one: https://www.videohelp.com/tools/VideoHelp-Bitrate-calculator Go to advanced mode and plug in your desired size and the running time and it will give you the bitrate. Works the same with any codec, including H.264. There are other bitrate calculators in our 'Tools' sections and some codecs have them as part of the settings. You should be able to just pass through the AC-3 audio as it's probably already compacted enough.

Of course you will take quite a hit on video quality, but try it and see how it looks.

[Baldrick]

In handbrake(under the video tab) or ripbot264(under advanced settnings and change to 2-pass mode) can you set the output file size directly. But manually setting the bitrate works fine too.

[dragonkeeper]

Just by going from 1080P to 720P you have loss quite a bit of quality. Reducing file size further will cause addition quality loss. You can however mitigate the quality loss to a point, by making the video more compressible. I would recommend ripbot to further compress the movies, it uses avisyth to process the moves. You can add additional filters to the generated script to sharpen the image a bit then do light to medium noise removal, this will increase compressibility allowing smaller file size with out sacrificing as much quality.

[AndreL]

thanks every one