mkvtoolnix - compression "determine automatically" question

[stu94]

My question is if you use mkvtoolnix and do not check of the option "no compression" and let it stay on the option "determine automatically"- for audio, video and subtitle (pgs) will the quality lessen / be lowered?
Which means that it will not be a remux but become an encode.

In makemkv there is no option at all regarding this, so im guessing it will stay as a remux, but you cannot use use m2ts in that software.

my goal is remux and not encode.

Is there any way to know if the file has been compressed in any way?
I appreciate any answers

Thank you

 

[stu94]

My question is if you use mkvtoolnix and do not check of the option "no compression" and let it stay on the option "determine automatically"- for audio, video and subtitle (pgs) will the quality lessen / be lowered?
Which means that it will not be a remux but become an encode.

In makemkv there is no option at all regarding this, so im guessing it will stay as a remux, but you cannot use use m2ts in that software.

my goal is remux and not encode.
I appreciate any answers

Thank you

 

[smitbret]

I have remuxed thousands of files with MKVToolnix and never paid any attention to that field. It has never compressed anything. I guess if you want to be safe then set it to "no compression" but in reality you can just leave it alone.

 

[stu94]

Thank you for your answer.

I did not take that any special note of that field either. It was only when I thought to specifically name the video, audio and subtitle field couple of days ago, that i thought my remuxed files might have been compressed. I have never changed any settings in that field.

When you hover over the compression field, it says something about that currently only subtitles might be compressed to zlib compression.
Do you know what it means specifically?

Is there any way to know if the file: audio or video has been compressed in any way?

Thanks

 

[smitbret]

Thank you for your answer.

I did not take that any special note of that field either. It was only when I thought to specifically name the video, audio and subtitle field couple of days ago, that i thought my remuxed files might have been compressed. I have never changed any settings in that field.

When you hover over the compression field, it says something about that currently only subtitles might be compressed to zlib compression.
Do you know what it means specifically?

Is there any way to know if the file: audio or video has been compressed in any way?

Thanks

Easiest way to tell is in how long it takes for the remux. Most of my remuxing takes about 30 sec per GB. If it were transcoding/re-encoding it would take you 10x that long.

 

[jkauff]

Use MediaInfo to see if the MKV file has the same stats as the original. That's the best way to tell if compression has been used.

MakeMKV will handle most Blu-ray discs, but the Blu-ray capability is time-limited in the free version. After the free period ends, you have to either pay for the program or wait for the next beta release. I paid for mine years ago, since it's one of my most-used programs.

I only use mkvtoolnix when I need to alter an MKV file in some way (like adding subtitles), or want to combine a two-part movie.

 

[stu94]

Easiest way to tell is in how long it takes for the remux. Most of my remuxing takes about 30 sec per GB. If it were transcoding/re-encoding it would take you 10x that long.

It depends, sometime it takes 25 min to 1 hour all together for the remux. if In some of my bdav i cant find any stream size info.

I remuxed "shawshank redemption", with mkvtoolnix gui and specifically setting compression to "no compression" in video, audio, sub. the video stream changes from 19GB m2ts. to 16.3 mkv.
I use mkvtoolnix gui to change the name of the sub, video, audio and the file name itself. Does this affect the quality in any way
What is the mistake i`m making?

Also if there has been any encoding done that changes the file would i know by if the media info has a section that jas "encode setting" the info about the encoding changes to the file next to it?

 

[stu94]

Use MediaInfo to see if the MKV file has the same stats as the original. That's the best way to tell if compression has been used.

MakeMKV will handle most Blu-ray discs, but the Blu-ray capability is time-limited in the free version. After the free period ends, you have to either pay for the program or wait for the next beta release. I paid for mine years ago, since it's one of my most-used programs.

I only use mkvtoolnix when I need to alter an MKV file in some way (like adding subtitles), or want to combine a two-part movie.

I remuxed "shawshank redemption", with mkvtoolnix gui and specifically setting compression to "no compression" in video, audio, sub. the video stream changes from 19GB m2ts. to 16.3 mkv.
I use mkvtoolnix gui to change the name of the sub, video, audio and the file name itself. Does this affect the quality in any way
What is the mistake i`m making?


Also if there has been any encoding done that changes the file would i know by if the media info has a section that jas "encode setting" the info about the encoding changes to the file next to it?

 

[meimeiriver]

I would love for compression "determine automatically" to be disabled by default, subsidiarily, an option to keep my choice to disable compression. It's frankly a bit of silly thing to have it enabled, in this day and age of 4K HDR10+ content. Stop marketing your software like any other cheap xvid bot.