Qtractor

Description

A MIDI/Audio multi-track sequencer

Bug MimeTypes

Forums

I've been dealing with this since I started compiling Qtractor. (Years?)

I thought it was a side effect of compiling, but it's not. :) It's simply that the bug isn't present in older versions.

In the .desktop file, it says:

MimeType=application/x-qtractor-session;application/x-qtractor-template;application/x-qtractor-archive;

However, the icon names are:

org.rncbc.qtractor.application-x-qtractor-session;

org.rncbc.qtractor.application-x-qtractor-template;

org.rncbc.qtractor.application-x-qtractor-archive;

They don't match.

Qtractor doesn't end always

Forums

This is an issue that I am experiencing for years. Sometimes I try to stop Qtractor, either via File>Exit or by closing the Qtractor main pane window, then it becomes unresponsive and I have to kill Qtractor, either via kill -9 or by a 2nd try to close the main pane window, then xfce4 asks me if this program should be stopped.

To investigate it further I compiled a Debug build from the most recent Qtractor. With the same qtr-file I had 2 different behaviors:

XRUN after loading a project

Forums

When I load big projects then it can happen that XRUN ist displayed although it vanishes after first playback.

I propose a little bit of eye candy: Inhibit the XRUN display until the project is loaded and initialized. If that cannot be determined then inhibiting the XRUN display for a couple of seconds would be fine, too. Before activating the XRUN display the counter should be reset, I think.

Audio clip recording latency compensation

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This can be improved, I think. I set up a loopback in my audio interface.

jackd -p1024 -n3
Qtractor compensated the recorded audio clip with an offset of 2050 frames

jackd -p1024 -n3 -I80 -O80 (as recommended by jack_iodelay)
Qtractor compensated the recorded audio clip with an offset of 2125 frames

In both cases jack_iodelay reported 4250 frames. Using this as the audio clip's offset did the job.

Relative paths for plugins in session documents

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Absolute paths can present privacy and security problems if sessions are shared. While the risk is very low, it depends heavily on the user's chosen username and how much information that username reveals. Perhaps it's a negligible risk, but it's easy to avoid...

I know this doesn't affect lv2, but it does affect other formats.

aux send to a track?

Forums

hi, I was wondering if it's realistic for there to be an aux send to a track feature for future versions/development? (especially from one track to another track more so than from bus to track).

I feel if possible, this feature alone might, at least of myself, simplify the mixing workflow in Qtractor.

Instead of Buses acting as both input/output nodes as well as track groups,

i made a new tutorial video for Qtractor

Forums

(youtube link: https://youtu.be/nOSeug-M5-s)

hi, since i got feedback here for my last videos. i thought i might share this here. if i made any mistakes or need corrections.

Thanks.

(backup link:
internet archive: https://archive.org/details/qtractor-tutorial-by-rounak-with-voiceover-this-is-it-final-im-done )

Connecting Segments

Forums

Hi,

I am working to edit a single audio file. I remove the material I do not want by highlighting the segment as a rectangle and pressing the delete key. I then move the remaining part of the audio file to the left to place it next to the part I am happy with in the audio file.

I do more editing as described above. I listen to my work from the start. I find there are spaces between the segments of the audio clip. I think what is happening is that I am moving the remaining segments, but not connecting them to be a single segment.

Qtractor Feature Req: Automated Stems Export

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(Solo Individual tracks from top down and export audio)

Hi.

I was wondering if it'd be possible for Qtractor to have an automated stems export feature.

Just on an end user level, something like the LMMS stem export process would be more than sufficient.

Just solo individual tracks from top down and export audio x total number of individual tracks.