Double video time when using mkvmerge

[blup]

Hi,

I am new to video converting. I tried to convert one of my BD's to a mkv file. I used tsmuxer to demux the video and audio stream from the BD. The video has a duration of 1h:51m:34s with a framerate of 25fps according to BDInfo. I used mkvmerge and manually added the fps of 25 to create a mkv. The result I get is a mkv file that has a duration of 3h:43m:07s where the audio stops after a while (1h 51m 34s). It also looks the video is playing to slow for the audio. Any idea what could be the problem here. It seems to me something with the fps.

I used this example:
http://www.dvd-guides.com/guides/blu-ray-rip/256-remux-blu-ray-to-mkv


Grz
Danny

[blup]

When I open the m2ts file from BD VLC says fps = 50
BDInfo says its 25fps

Why this dif? I read something about interlaced can cause this. What is this?

[hello_hello]

It sounds like an interlaced v progressive problem. PAL is actually 50 fields per second. Each field is half a full frame and the video is shot at 50 fields per second. That's interlaced. Progressive PAL is basically 25 full frames per second. Progressive can also be 50 full frames per second. That's a basic description of it, at least.

Normally when you open a video with MKVMerge there's no need to enter the frame rate, but your guide demuxes the video stream to a raw format for muxing to MKV, which is probably where things are going wrong. Try entering 50fps to see if that fixes it, or don't enter one unless it warns you to.

I'm not sure there's any point demuxing the video to a raw stream. If you're using AnyDVD for decrypting as per the guide and want an MKV file, use Eac3to instead to extract the video to MKV. It's command line, but there's a link to a couple of GUI's for it on the download page. I use HD-DVD/Blu-Ray Stream Extractor as it's built in to MeGUI (which I use for converting) but the standalone version is the same. It can also extract and convert the audio etc. When it's done you'll need to add the audio to the MKV using MKVToolNix but you shouldn't have frame rate issues. Just let MKVMerge remux the MKV containing the extracted video without entering one.

Or try using tsmuxer to extract the video to an m2ts file rather than a raw stream. I'm pretty sure MKVMerge can open those. Make sure tsmuxer's option to change the frame rate isn't checked, and once again, don't enter one when remuxing.

[blup]

Hi,

Setting the fps to 50fps did the trick. Will try other ways to convert bd to mkv. Thx for help.

[Stears555]

It is a common problem for applications which use FFMPEG. It is a well known problem with ffmpeg.

[Baldrick]

It is a common problem for applications which use FFMPEG. It is a well known problem with ffmpeg.

But tsmuxer and mkvmerge does NOT use ffmpeg.....

[blup]

Don't mind me for asking but what is the best / adviced way then to convert my BD to a mkv? And how can I keep the chapters that are present in my m2ts file? With sequence above the chapters are lost. Should I use HD-DVD/Blu-Ray Stream Extractor ase adviced above?

Happy christmas btw.

Danny

[Baldrick]

Tried Makemkv?

[hello_hello]

I don't normally bother with them so I can't remember, but according to the info on this page it'll extract chapters and subtitles etc.
http://www.digital-digest.com/software/HD_DVD_Blu-Ray_Stream_Extractor.html

There's several GUI's for eac3to. Some are designed for specific tasks so they do some things well, maybe some things not at all, and some will also use tsmuxer, but if HD-DVD/Blu-Ray Stream Extractor doesn't do it for you, try Clown BD. It's designed with the purpose of extracting/converting in mind, and it seems to be fairly popular. There's a few different versions, but I couldn't really tell you the difference between them, although I assume the "copier" version is designed for creating discs.
https://www.videohelp.com/tools/Clown-BD
https://www.videohelp.com/tools/Clown-BD-BD-Copier
http://www.clownbd.com/

This GUI's handy for converting extracted audio as I think some of the "extracting" eac3to GUIs won't open raw audio streams.
http://www.afterdawn.com/software/audio_video/convert_audio/eac3to_conversion_utility.cfm