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[Buellerich]

Good evening,

I have downloaded JRiver 26 for testing purposes, but the period has expired meanwhile.

In terms of soundquality the software is top notch with an external USB DAC and ASIO Setup.
Since a lot of good recordings in classical music are exklusively available on DVD ( not DVD Audio), I like MC‘s possibility to watch and listen to DVD in high quality. When listening to Audio, I normally use ASIO and allow the software to load the decrypted file into memory before being played. So far so good.
I came across the possibility to rip DVDs with JRiver , as long as they are not copy protected. Of course, ripping a DVD library is preferrable to directly playing the DVD live.
However, let US suppose that a ripped DVD is on HD after being ripped. Is there any chance to load at least the Audio part into RAM before rendition takes place like this would be the case for a normal Audio file? This is important, because streaming from HD with low latencies selected is prone to suffer from glitches.
I am aware of the possibility of extracting the Audio part individually, but this is not my point, because I prefer Audio and Video.
Thanks a lot for your patience and answer in advance.

Best regards

Sascha

[tij]

Not sure that’s possible ... as extracting audio from file with video is not so fast process and likely require reading whole file which can be make worst if those files are located on NAS.

You can increase buffer for playback to minimize glitches.

For reference ... I play my videos (untouched 4K with lossless 7.1 tracks) from NAS with 7200k HDDs over 1gb network - no problem.

[Buellerich]

Hi tij,

thanks for your reply.

No, it is a local disc on a laptop, however a single HD, on which Windows is running.
I have already thought about walking a sideway via RAM DISK, however not easy with only 4 GB of RAM.
I see your point about processing speed and reading the file in advance. However, that means at the same time, that some of the Audio Settings no longer work when rendering DVDs, right?

[tij]

All DSP works fine on audio from video files ... I don’t think there is DSP feature that needs whole audio file.

Well ... volume leveling ... waveform display ... and HDCD  ... need whole audio analyzed, but those analysis are done once separately and not during playback

[tij]

I am more into videos ... so I could be wrong ... pretty sure more knowledgeable ppl will chime in ... till then I am just filling void with my limited knowledge in this

[Buellerich]

Hi tij

thanks anyway for your reply.

Maybe we can find it out in the future....

[Hendrik]

You can't load the audio into memory and still load the video from disk, as they are directly linked in the file for synchronized playback - and that would also entirely defeat the point, as it doesn't matter where the audio comes from, but what the PC might be doing during playback.

The only way to use memory playback is to rip the audio without the video.

[Buellerich]

Hi Hendrik,

Yes, that seems logical.

Maybe using the optical drive is more stable, because to my knowledge the data stream is buffered before being passed on to a certain degree....

[tij]

Optical drive will always be slower than HDD. And HDD also have cache memory.

If your optical drive is faster than your HDD, your HDD has a problem and probably needs replacing.

[Buellerich]

Hi tij,

thanks for your clarification.

I will try to rip and use HDD in the future.
However, I have a Laptop with single HDD Installation, on which Windows is running as well.
I made some testing yesterday, but only with the internal soundcard, however in WASPI mode. The outcome was that without further video settings, video best synchronizes with audio, when the audio buffer size is set on low values. High settings cause stuttering. Consequently, a good rendition seems to imply low latencies, which makes the streaming process somehow fragile....