How do you convert HD 720p MKV file to MP4 HD file without losing quality?

[SoccerLover]

I have a file that is in MKV HD. Here is my scan from mediainfo:

General
Complete name : C:\Users\Bruker\Downloads\CL 10-11 - 3 Tur Group C - MU - Bursaspor\1st Half Time.mkv
Format : Matroska
File size : 1.44 GiB
Duration : 47mn 0s
Overall bit rate : 4 387 Kbps
Movie name : regmo.blogspot.com
Encoded date : UTC 2010-10-20 19:37:06
Writing application : gdsmux
Writing library : Haali DirectShow Matroska Muxer 1.10.262.12

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L4.0
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Format settings, GOP : M=4, N=32
Muxing mode : Container profile=Unknown@4.0
Codec ID : V_MPEG4/ISO/AVC
Duration : 47mn 0s
Bit rate mode : Variable
Bit rate : 3 915 Kbps
Maximum bit rate : 20.0 Mbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate : 50.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.085
Stream size : 1.29 GiB (89%)
Title : PID 4113
Color primaries : BT.709-5, BT.1361, IEC 61966-2-4, SMPTE RP177
Transfer characteristics : BT.709-5, BT.1361
Matrix coefficients : BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177

Audio
ID : 2
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Muxing mode : Header stripping
Codec ID : A_AC3
Duration : 47mn 0s
Bit rate mode : Constant
Bit rate : 384 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Video delay : -44ms
Stream size : 129 MiB (9%)
Title : PID 4352

I've already tried using GotSent, but it keeps crashing. And when I convert it with Xilisoft, it just says ''failed'' for some reason. Worked fine before, but some loss of quality though.

Please help me, appreciate it!

[lowellriggsiam]

You might try using handbrake.

[poisondeathray]

yamb (mp4box) , the beta supports ac3 audio

or ffmpeg

[SoccerLover]

Thank you for all the replies. I am trying the handbrake and it is taking long time. I searched for my self some time and found this ''HDConverterToX'' and it had a fine output but the video was going in slow motion while the audio was fine. This method took really long time. Thank you for quick answers!

[lowellriggsiam]

Handbrake does take a while, but has good results.

[poisondeathray]

But you are re-encoding with handbrake , and losing quality (unless you use lossless crf=0, but then you get huge filesize)

If you re-wrap , you lose no quality and only it takes a minute or two. All you are doing is taking the video & audio and copying them into .mp4 container - much better than re-encoding

[jagabo]

I agree with poisondeathray. Use Yamb to take the video and audio streams out of an MKV container and put them into an MP4 container. It's fast and there's absolutely no change in quality.

[V1de0Luvr]

I haven't tried Yamb but AviDemux can also convert MKV to MP4. However, a true MP4 should really have the audio converted to AAC instead of AC3.

avidemux2_cli.exe --load "%~n1.mkv" --output-format MP4 --save "%~n1.mp4"

[jagabo]

MP4 officially supports AC3. So it's just as "true" in MP4 as AAC. Granted, being new, it's less common and some programs/devices don't work with it.

[edDV]

Not clear what OP is wanting to do.

Is no recode the goal?

[jagabo]

Well, he did say "without losing quality".

[edDV]

Then remux the container.

That doesn't guarantee anything will play it.

[intracube]

You could try ffmpeg:
ffmpeg -i originalfile.mkv -vcodec copy -acodec copy newfile.mp4

which will copy the streams without re-encoding.

[SoccerLover]

I agree with poisondeathray. Use Yamb to take the video and audio streams out of an MKV container and put them into an MP4 container. It's fast and there's absolutely no change in quality.

Yamb doesn't support .mkv extension. And Handbrake is working perfect! Great result, but takes a while!

[jagabo]

Yamb doesn't support .mkv extension.

Works for me:



Maybe you need an update? Or maybe Haali mkv splitter?

[SoccerLover]

Yamb doesn't support .mkv extension.

Works for me:


[Attachment 3980 - Click to enlarge]

Maybe you need an update? Or maybe Haali mkv splitter?

I have the newest version. I doesn't support .mkv. It looks like your one is a very old version by watching the screenshot you provided.

[jagabo]

I'm using the 2009-06-29 version (2.1.0.0 beta 2) which is the latest version, as far as I know.
http://yamb.unite-video.com/index.html

I suspect you didn't elect to include MkvExtract when you installed Yamb.

[SoccerLover]

I'm using the 2009-06-29 version (2.1.0.0 beta 2) which is the latest version, as far as I know.
http://yamb.unite-video.com/index.html

I suspect you didn't elect to include MkvExtract when you installed Yamb.

[Attachment 4027 - Click to enlarge]

Yeah, you had right, I didn't install the MKVextract, but now, when I add my files in there, it just gets an error and finishes...

[poisondeathray]

What does the error say? post the log file

You can try using mkvextractgui , extract the raw streams, then import them into yamb