Disable Video Track?
Disable Video Track?
There's a checkbox to enable/disable audio and subtitle tracks, but is there a way to disable a video track and just rip the audio? Having to rip an entire 4K disc just for an additional audio commentary isn't very efficient.
Re: Disable Video Track?
Even if the video wasn't saved, it would still have to be read to rip an audio track.
When you think for a moment about how the data is laid out on a disc, the audio and the video are interleaved or multiplexed together. The player only has a single laser to read both the audio and the video and show them to you at the same time. An oversimplified way to think about it is the stream the player reads contains a chunk of video then a chunk of audio then a chunk of video and so on. As those bits are read, the video gets dumped into a video buffer to be processed and shown and the audio gets dumped into an audio buffer to be processed and played in sync with the video from the video buffer. The laser is reading the multiplexed data fast enough to keep those buffers from running empty so you can hear and see the video all synced up.
So, when MakeMKV rips a disc, it has to read the entire multiplexed data stream for any title on the disc. It is pretty common that folks ripping a disc might only be interested in a subset of the language tracks on the disc. So if they uncheck the French language track, when MakeMKV encounters a chunk of French audio, it doesn't write that into the resulting .mkv file. It is very uncommon for someone ripping DVD or blu-ray to not want the video. On those rare occasions, various other tools can be used to strip out an audio track into a separate file that can be multiplexed into some other video stream if that's what the user wants.
I think adding a checkbox to not include the video in a .mkv file would only save the rare user who wants that functionality a bit of disk space and a few moments of post processing. It would, at the same time, create a potentially large support burden for new users who accidentally uncheck the video and then don't understand why their screen is black.
But that's just my opinion.
I'm not the author of this program. Perhaps Mike will decide to add such functionality, but I doubt it.
When you think for a moment about how the data is laid out on a disc, the audio and the video are interleaved or multiplexed together. The player only has a single laser to read both the audio and the video and show them to you at the same time. An oversimplified way to think about it is the stream the player reads contains a chunk of video then a chunk of audio then a chunk of video and so on. As those bits are read, the video gets dumped into a video buffer to be processed and shown and the audio gets dumped into an audio buffer to be processed and played in sync with the video from the video buffer. The laser is reading the multiplexed data fast enough to keep those buffers from running empty so you can hear and see the video all synced up.
So, when MakeMKV rips a disc, it has to read the entire multiplexed data stream for any title on the disc. It is pretty common that folks ripping a disc might only be interested in a subset of the language tracks on the disc. So if they uncheck the French language track, when MakeMKV encounters a chunk of French audio, it doesn't write that into the resulting .mkv file. It is very uncommon for someone ripping DVD or blu-ray to not want the video. On those rare occasions, various other tools can be used to strip out an audio track into a separate file that can be multiplexed into some other video stream if that's what the user wants.
I think adding a checkbox to not include the video in a .mkv file would only save the rare user who wants that functionality a bit of disk space and a few moments of post processing. It would, at the same time, create a potentially large support burden for new users who accidentally uncheck the video and then don't understand why their screen is black.
But that's just my opinion.
I'm not the author of this program. Perhaps Mike will decide to add such functionality, but I doubt it.Re: Disable Video Track?
Maybe use the decryption proxy? I've never used it so I'm not sure how it works. Anyways, "MKVToolNix GUI" will allow you to use a .mpls, then pick which to use and then finally pick the stream stream to save. Just go into "BDMV/PLAYLIST/" then drop any of the .mpls files on the GUI and it will ask if it should scan all .mpls files, choose "Scan for other playlists".