MKV to MKV Conversion

[darkstonecold]

Friends i have lots of videos(MKV format) in hdd having size 300 mb to 700 mb(since they have 2000kbps to 3000kbps bitrate). the problem is i want to reduce the size of those videos without reducing its resolution & with minimum amount of quality loss.right now im using handbrake to conversion & i successfully converted those videos & bring their size below 100mb with following settings



Input file video description
Format : Matroska
File size : 339 MiB
Duration : 23mn 49s
Overall bit rate : 1 990 Kbps
Encoded date : UTC 2008-10-06 18:54:45
Writing application : mkvmerge v2.1.0 ('Another Place To Fall') built on Aug 19 2007 13:40:07
Writing library : libebml v0.7.7 + libmatroska v0.8.1
Cover : Yes / Yes

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5.1
Format settings, CABAC : Yes
Format settings, ReFrames : 8 frames
Muxing mode : Container profile=Unknown@5.1
Codec ID : V_MPEG4/ISO/AVC
Duration : 23mn 49s
Bit rate : 1 791 Kbps
Nominal bit rate : 1 825 Kbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 fps
Resolution : 8 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.081
Stream size : 305 MiB (90%)
Title : Toaru Majutsu no Index - 01
Writing library : x264 core 60 r899 f8428ed
Encoding settings : cabac=1 / ref=8 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh / subme=7 / brdo=0 / mixed_ref=1 / me_range=22 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / chroma_qp_offset=0 / threads=4 / nr=0 / decimate=1 / mbaff=0 / bframes=5 / b_pyramid=1 / b_adapt=1 / b_bias=0 / direct=1 / wpredb=1 / bime=0 / keyint=250 / keyint_min=25 / scenecut=40(pre) / rc=2pass / bitrate=1825 / ratetol=1.0 / rceq='blurCplx^(1-qComp)' / qcomp=1.00 / qpmin=10 / qpmax=51 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / pb_ratio=1.30 / aq=2:1.00
Language : English

Input file snap
http://i47.tinypic.com/2j5js6q.png

Output file snap
http://i46.tinypic.com/oar6kx.png

But The problem is the quality loss is huge

Im not master in video transcoding(don't have detailed knowledge about scripting,alpha,beta gamma etc etc) just have little bit of knowledge means selected the normal preset from the list of presets in handbrake & just changed the container, bitrate, set to the two pass mode since it give better quality op with more time consuption means no change in advance options of h264.

so plz guys guide me. tell me (i much appreciate if someone explain it to me or atleast given the link where all these advance terms are explained) the perfect setting so i can make file around 100 MB in size with least amount of quality loss.

[Baldrick]

I don't think you can do much. 330kbits for 1280x720p video is way too low to get any watchable quality.

[darkstonecold]

so how much bitrate i should prefer in order to get good quality with low size & which filter i should use & plz tell me some advance settings

[poisondeathray]

You can't unless you have the original source. Leave it as it is

Each time you re-encode you throw away extra information

Even to get LOWER quality, you would have to INCREASE the bitrate and make a larger filesize if you didn't use the original.

What you're using at the "source" is already very low quality with banding and posterization, so any more re-encoding will only make it a lot worse

[Bonie81]

I do agree with Baldrick "I don't think you can do much."
coz Advance Video Codec uses the best compression methods.
Now, more you compress more loss of quality is for sure.
Plus, re-compressing of compressed one is not really advisable.
and furthermore, chances getting videos more pixlates is very high when you try to compress the compressed ones. This effect is very noticeable on big-screen.