makemkv extracts content but one scrambled video

[pdx1138]

Ran pc version of makemkv 1.7.8 on Star Trek The Original Series, season 2, disc 4.

No error messages came up.

There are three episodes, two of them play perfectly as .mkv files.

One of them the audio plays fine, but the image is scrambled.

lots of interference and random gray blocks showing on picture.

I did try AnyDVD HD to extract this one title, but it has the same problem

any idea how to solve this?

[Romansh]

Using what for playback, VLC? A player which uses ffdshow for decoding? Something else?

[pdx1138]

ya using latest pc version of VLC.

Also, if I just stream the blu-ray with makemkv and open that stream
in VLC without ripping it, those other 2 episodes play fine but I get
the scrambled picture on that one. It's consistent.

It's as if that particular title set has some additional content protection.
and not stripping it out is causing the playback issue.

And yes the episode with the problem plays just fine on a blu-ray player.

[Romansh]

My bet is on VC-1 with interlaced compression - the libavcodec VC-1 decoder only has partial support for it at this point. Anything that uses libavcodec to decode VC-1 interlaced is bound to play it incorrectly and/or crash.

[pdx1138]

ah, that is definitely possible. They are all VC-1

I know the other 2 titles are 24p and that the problem one is
an interlaced HD up-convert.


Any way around this? or any other tool that can deal with it?

[Romansh]

If my guess is correct, then anything that can use the Microsoft VC-1 decoder should be able to play it.

[pdx1138]

thanks for the suggestion it's exactly what you said.

I found a media player that claimed it can play interlaced VC-1
content and it plays the .mkv file perfectly fine.

any idea what tool I could run on it to make it able to
decode properly with handbrake?

[Romansh]

RipBot264 can use the Microsoft VC-1 decoder, IIRC. You may need to configure it to do so, as I don't know whether it's the default.

[setarip_old]

@pdx1138

Hi!

For exceptions such as this, that MakeMKV cannot properly process, you might want to use AnyDVDHD (to remove protection) and then use BD Rebuilder ("BD-RB") to both compress and convert to MKV, while automatically (IIRC) converting the VC-1 from interlaced to progressive

[mike admin]

You may as well use MakeMKV (decrypted) full disc backup to remove protection. Not to mention OP note that AnyDVD HD produces the same problem.

[Romansh]

For exceptions such as this, that MakeMKV cannot properly process, you might want to use AnyDVDHD (to remove protection) and then use BD Rebuilder ("BD-RB") to both compress and convert to MKV, while automatically (IIRC) converting the VC-1 from interlaced to progressive

libavcodec's inability to decode interlaced VC-1 properly hardly strikes me as something MakeMKV has anything to do with