Mkv to mp4/m4v lossless

Spacecowboy1 · Oct 2, 2012

Hi guys

Is there anybody out there that converting bluray MKV rips to MP4's without losing any of the original bluray quality? If so how are you going about doing it..?

Also is it a quicker process? as I'm guessing you can use passthru on the video.

JDrive · Oct 2, 2012

MakeMKV does not transcode the audio or video.

Sorry misread your post you could demux the audio and video streams with mkvtoolnix and then remux using ffmpeg.

Spacecowboy1 · Oct 2, 2012

JDrive said:
MakeMKV does not transcode the audio or video.

By that do you mean the mkv will be lossless?

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JDrive said:
MakeMKV does not transcode the audio or video.

Sorry misread your post you could demux the audio and video streams with mkvtoolnix and then remux using ffmpeg.

That sounds a bit complicated!! Lol

mic j · Oct 2, 2012

Spacecowboy1 said:
Hi guys

Is there anybody out there that converting bluray MKV rips to MP4's without losing any of the original bluray quality? If so how are you going about doing it..?

Also is it a quicker process? as I'm guessing you can use passthru on the video.

You can change the mkv container to an mp4 container using Subler (free).

Spacecowboy1 · Oct 2, 2012

Spacecowboy1 said:
By that do you mean the mkv will be lossless?

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That sounds a bit complicated!!

How would I go about remuxing to ffmpeg ?
Is ffmpeg a container or a program ?or neither #

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mic j said:

You can change the mkv container to an mp4 container using Subler (free).

Click to expand...

Would that be lossless?

mic j · Oct 2, 2012

Spacecowboy1 said:
Spacecowboy1 said:

By that do you mean the mkv will be lossless?

----------

That sounds a bit complicated!!

How would I go about remuxing to ffmpeg ?
Is ffmpeg a container or a program ?or neither #

----------

Would that be lossless?

Click to expand...

yes

Spacecowboy1 · Oct 2, 2012

i dont know whether this is me doing something wrong but I've tryed converting a mkv to mp4 3 times now and not one of them will play afterwards. i process finishes ok and i get an m4v ouput file but it wont play.

when i try open it in quicktime i get the following error

the document"Headhunters.m4v" could not be opened the movie file format isnt recognised.

i also get this from mplayerx

error

oops, it seams that mplayer has quit without playing the media.

also videospec doesn't recognise the file!!

this is the process im doing in subler

1. open subler

2.file > open > headhunters.mkv

3. i then get a dialog box to select tracks

4. i select the video track, audio tracks , subs and chapter tracks

5. press add

6.press file > save
and save to a location

i then get a choice of file format video-mpeg4 or movie-mpeg4

then subler starts saving which takes about 5-10mins then i get the file thats unplayable.

am i missing something here?

mic j · Oct 3, 2012

Spacecowboy1 said:
i dont know whether this is me doing something wrong but I've tryed converting a mkv to mp4 3 times now and not one of them will play afterwards. i process finishes ok and i get an m4v ouput file but it wont play.

when i try open it in quicktime i get the following error

the document"Headhunters.m4v" could not be opened the movie file format isnt recognised.

i also get this from mplayerx

error

oops, it seams that mplayer has quit without playing the media.

also videospec doesn't recognise the file!!

this is the process im doing in subler

1. open subler

2.file > open > headhunters.mkv

3. i then get a dialog box to select tracks

4. i select the video track, audio tracks , subs and chapter tracks

5. press add

6.press file > save
and save to a location

i then get a choice of file format video-mpeg4 or movie-mpeg4

then subler starts saving which takes about 5-10mins then i get the file thats unplayable.

am i missing something here?

Does the mkv use the h.264 codec?

Cinephi1e · Oct 3, 2012

Also, make sure that 64-bit chunk offset is checked in Subler.

peeaanuut · Oct 3, 2012

I use the aTV2 setting in handbrake to convert MKv tv shows I get. They work just fine as m4v files, the downside is that they usually end up being a bigger file size afterwards. But they play fine.

mclog · Oct 3, 2012

peeaanuut said:
I use the aTV2 setting in handbrake to convert MKv tv shows I get. They work just fine as m4v files, the downside is that they usually end up being a bigger file size afterwards. But they play fine.

You should be using something like XMedia Recode which doesn't touch the video, just converts the audio to atv suitable format, and puts in m4v container. Only takes a couple of minutes to do an episode, and it's basically the same size afterwards.

mic j · Oct 3, 2012

mclog said:
You should be using something like XMedia Recode which doesn't touch the video, just converts the audio to atv suitable format, and puts in m4v container. Only takes a couple of minutes to do an episode, and it's basically the same size afterwards.

Note that he is in the apple ecosystem. XMedia Recode is Windows only. Subler has the same function in the Mac environment. Also, transcoding is required if original file does not use the h.264 codec.

Menneisyys2 · Oct 3, 2012

mic j said:
Note that he is in the apple ecosystem. XMedia Recode is Windows only. Subler has the same function in the Mac environment. Also, transcoding is required if original file does not use the h.264 codec.

Definitely. Subler converts DTS / AC3 subtracks to AAC just fine (if you don't have a hardware decoder, connected to your ATV, to decode AC3). Let me know if you need my tutorial on using the audio converter support under ML and I'll dig up the link (posted it in some of the threads here).

----------

Spacecowboy1 said:
Hi guys

Is there anybody out there that converting bluray MKV rips to MP4's without losing any of the original bluray quality? If so how are you going about doing it..?

Also is it a quicker process? as I'm guessing you can use passthru on the video.

Are they "scene" (read: pirated) rips, or, original ones? The former are very easy to convert as they "only" have DTS / AC3 audio and textual subtitles; the latter may be much more complicated (VC-1 video, HD audio, BD subs - all require conversion).

Spacecowboy1 · Oct 3, 2012

Cinephi1e said:
Also, make sure that 64-bit chunk offset is checked in Subler.

Thanks Cinephi1e that was the missing link! everything worked fine after that the subs are now working in iTunes, but theres one big problem!!!!
on the subs the letter 'l' is been replaced by a forward slash '"/" im guessing the ocr recognision is having problems with the letter "l" is there anything i can do about this? when i load the .sup into BDsup2sub the first window of text matches the second window on the problem area....ive looked for a manual for BDsup2sub but i cant find anything.

Spacecowboy1 · Oct 3, 2012

Menneisyys2 said:
Definitely. Subler converts DTS / AC3 subtracks to AAC just fine (if you don't have a hardware decoder, connected to your ATV, to decode AC3). Let me know if you need my tutorial on using the audio converter support under ML and I'll dig up the link (posted it in some of the threads here).

----------

Are they "scene" (read: pirated) rips, or, original ones? The former are very easy to convert as they "only" have DTS / AC3 audio and textual subtitles; the latter may be much more complicated (VC-1 video, HD audio, BD subs - all require conversion).

these are blurays that i have bought and ripping myself and the contents for the city of god are:-

video(h264)
audio(dts) 3/2+1
subtitle(pgs)
subtitle(pgs)

Spacecowboy1 · Oct 3, 2012

oh it gets worse the text on the screenshot is ment to say "Shaggy"

orestes1984 · Oct 3, 2012

Spacecowboy1 said:
i dont know whether this is me doing something wrong but I've tryed converting a mkv to mp4 3 times now and not one of them will play afterwards. i process finishes ok and i get an m4v ouput file but it wont play.

when i try open it in quicktime i get the following error

the document"Headhunters.m4v" could not be opened the movie file format isnt recognised.

i also get this from mplayerx

error

oops, it seams that mplayer has quit without playing the media.

also videospec doesn't recognise the file!!

this is the process im doing in subler

1. open subler

2.file > open > headhunters.mkv

3. i then get a dialog box to select tracks

4. i select the video track, audio tracks , subs and chapter tracks

5. press add

6.press file > save
and save to a location

i then get a choice of file format video-mpeg4 or movie-mpeg4

then subler starts saving which takes about 5-10mins then i get the file thats unplayable.

am i missing something here?

You need to tick the "64 bits chunk offset" box for files bigger than 4gb. It's a file size limitation.

mic j · Oct 3, 2012

Spacecowboy1 said:
Thanks Cinephi1e that was the missing link! everything worked fine after that the subs are now working in iTunes, but theres one big problem!!!!
on the subs the letter 'l' is been replaced by a forward slash '"/" im guessing the ocr recognision is having problems with the letter "l" is there anything i can do about this? when i load the .sup into BDsup2sub the first window of text matches the second window on the problem area....ive looked for a manual for BDsup2sub but i cant find anything.

I would suggest using Jubler to edit the files. Common for OCR apps to make these types of errors.

Spacecowboy1 · Oct 3, 2012

mic j said:
I would suggest using Jubler to edit the files. Common for OCR apps to make these types of errors.

would i need to go through each sentance and manually edit the bad text?

Spacecowboy1 · Oct 3, 2012

while where on the subject of lossless do you guys think its worth it? i mean were talking 25gb+ lossless vs between 1gb and 5gb encoded. obviously the latter is more appropriate for the likes of iOS devices but for the aTV the only restrictions are the size of your hard drive(s)

cmcclure16 · Oct 3, 2012

Spacecowboy1 said:
while where on the subject of lossless do you guys think its worth it? i mean were talking 25gb+ lossless vs between 1gb and 5gb encoded. obviously the latter is more appropriate for the likes of iOS devices but for the aTV the only restrictions are the size of your hard drive(s)

You do realize that the aTV won't play lossless HD audio formats though, right? You have to convert it to Dolby Digital first.

Spacecowboy1 · Oct 3, 2012

cmcclure16 said:
You do realize that the aTV won't play lossless HD audio formats though, right? You have to convert it to Dolby Digital first.

yes seems a shame!! when i look inside the mkv container the audio format is DTS Coherent Acoustic is that HD? and why wont the aTV support that is it some sort of hardware restrictions/limitations?....or is it just apple being apple?(sorry had to get that in!!)

Menneisyys2 · Oct 3, 2012

Spacecowboy1 said:
oh it gets worse the text on the screenshot is ment to say "Shaggy"

What did you use for text OCR? SubRip? Did you know the latest version of Subler have excellent OCR'ing capabilities?

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Spacecowboy1 said:
yes seems a shame!! when i look inside the mkv container the audio format is DTS Coherent Acoustic is that HD? and why wont the aTV support that is it some sort of hardware restrictions/limitations?....or is it just apple being apple?(sorry had to get that in!!)

Nope, DTS Coherent Acoustics is the same as the plain (compressed) DTS. Nevertheless, not even that can be decoded by the ATV3 - and can't be passed to an external decoder either. That is, you must convert them to AC3 (if you do have an external decoder) or, even worse, AAC (if you don't have an external decoder).

For this conversion, Subler is just fine. By importing an MKV file twice and, in the second import, you deselect everything but the audio track, you can have both an AC3 and an AAC audio track in your target M4V.

Spacecowboy1 · Oct 4, 2012

Menneisyys2 said:
What did you use for text OCR? SubRip? Did you know the latest version of Subler have excellent OCR'ing capabilities?

No I used BDsup2sub, I dropped the .sub that I extracted using mkvtools into BDsup2sub and then saved/ran and I got a .sub and .idx out the other end then i muxed the .idx/.sub into the mkv using mktoolnix(mkvmerge) then change the container using subler

I've got a feeling I'm doing something wrong in bdsup2sub. I was under the impression that when you load the .sup into bdsup2sub that the two windows (see above image)represent the .sub that I inserted and the .sub that will be created...and if both match that's what you'll get in your .sub when bdsup2sub is ran.

Ps...this thread is a great learning curve, thank you for everyone's help.

Menneisyys2 · Oct 4, 2012

Spacecowboy1 said:
Menneisyys2 said:

What did you use for text OCR? SubRip? Did you know the latest version of Subler have excellent OCR'ing capabilities?

No I used BDsup2sub, I dropped the .sub that I extracted using mkvtools into BDsup2sub and then saved/ran and I got a .sub and .idx out the other end then i muxed the .idx/.sub into the mkv using mktoolnix(mkvmerge) then change the container using subler

I've got a feeling I'm doing something wrong in bdsup2sub. I was under the impression that when you load the .sup into bdsup2sub that the two windows (see above image)represent the .sub that I inserted and the .sub that will be created...and if both match that's what you'll get in your .sub when bdsup2sub is ran.

Ps...this thread is a great learning curve, thank you for everyone's help.

Click to expand...

I don't think it's a problem of bdsup2sub - it's pretty much failsafe. (Just remember to set the output language!) Subler, so far, worked for me just great in OCR'ing VobSub subs, also in English so I don't udnerstand why it produced so bad results with your subs.

Are you sure you're using the latest Subler? It uses an implicit English OCR dictionary - therefore, it's not a problem if you've forgotten to download it.

Another solution would be using SubRip for VobSub OCR'ing. It requires more time (you'll always have to train all chars first) but, in general, may output better results.

Let me know if you need a dedicated tutorial on using BDSup2Sub / Subler / SubRip, I've published several articles on their OCR support and can paste them in here.

Mkv to mp4/m4v lossless

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