Looking for desktop application developer with Qt

Hello. I am a desktop system developer (specializing in macOS and Windows). I have created sophisticated Audio/Video editing applications, please have a look at the Dash Camera Video Player and other apps in my portfolio. There I've used multiple low level audio playback/recording frameworks, including ffmpeg (libavcodec, libavformat). Another one of my projects was an Audio to MIDI "converter", which basically does a Fourier analysis of an audio file (wav, mp3, and other formats) and generates a set of MIDI notes, played with different instruments (this was a Windows project). One of my recent projects was a cross-platform (Mac, Windows) Qt application for recovering damaged data. Basically I recreated its UI from scratch, resolved multiple problems with the low level C++ libraries that do the actual recovery. This project also involved creating non-standard Qt UI controls from scratch, UI animations and QML programming. For what it's worth, I am a hobbyist musician. I play guitar and keyboards, and one of my projects was a MIDI Looper Audio Unit for MainStage. This plugin listens for MIDI events from a MIDI keyboard and plays the memorized notes back, synchronizing them with the beat tempo. As for AppleScript, I've created Automator scripts, as well as embedded a scripting engine into my own applications. Of course, I have both Mac and Windows machines, I am able to build/debug the UI on a retina screen. Could you share your vision what the app is going to look like?

Hi, Dear. I have rich experience on desktop application development with Qt/Java/C++. Also I have ever worked on video compressing project, so I think I can build this work so clean. I hope we can discuss more detail on chat. My Skills: 1. QT 5.4+ [5.9.1]: Yes, worked on 5.4.1 before. 2. QML, Qt Quick 2, Qt Quick Controls: Yes, developed some applications and blackberry projects with these before. 3. FFMPEG Command Line Experience: Yes, I can use them for processing media files. 4. Audio programming experience for Win and Mac: yes. 5. Video Programming Experience Win and Mac: yes. 6. Apple Script Experience: not yet, but I can study. 7. Access to both Mac and Windows machines: yes, I have developed many MacOS/iPhone/iOS and Windows apps before. 8. Customization of C/C++ Libraries Experience: yes. 9. Experience with VLC Project: yes. I can dedicate full time with you. Hope your message. Thanks.

Hello, Client. I have read your project requirement. i think i am fit on this project. i am computer vision expert and full experience on mobile app development about 7+ years. i am familiar on QT, c/c++ and I have ever done many video processing apps using ffmpeg. I am especially good at facial processing including face recognition, age/gender estimation, face landmark detect and tracking, object detect and tracking. also good experience on various face filter. i have ever done face swap app, snapchat and snow like facefilter, makeup app, various facefilter app like facelife. if you want i can share you my result that i have done. please check my profile, i can give you perfect result as you want. hope to working with you. thanks.

Professional QT developer is here. I am top 10 developer on Freelancer.com. I checked your specs in detail and I am very interested. Please contact me with details. Thanks

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I'm a main developer of windows multimedia player CherryPlayer. I'm developing CherryPlayer last 6+ years, it is my hobby project to improve my knowledge. I'm working with Qt Quick 1.1 last 6+ years (starting in 2011 when Qt introduced this technology). I use QML to build quickly nice UI and ffmpeg and DirectShow to play audio/video. I built most UI controls in QML from scratch on Qt Quick 1.1 because some QML controls were missing when I started to develop CherryPlayer. Lately I built more QML controls myself to get better UI perfomance. CherryPlayer works on Windows Xp and above. I can use Qt 5.9.1 and Qt Quick 2.0 in your project. I did not upgrade player to Qt 5.x because first Qt 5.x versions worked unstable and with bugs on Windows computers where OpenGL drivers are old by default. This issue was fixed in Qt 5.9.x where is possible to enable using software rendering on Windows (like in Qt 4.8) and it is free for use in commercial projects now. I know about VLC library that has LGPL license now. It is possible to use VLC library for playback audio/video on Windows and MAC in commercial applications. This will save a lot of time and money during project development. I tested 2 years ago VLC library API to play video files on Windows and decided to continue improve CherryPlayer playback engine that worked better. I'm available to work on new project up to 40 hours per week. I'm not working on other projects now. Please ask me if you have any questions.

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Hey ! I'm SAYAN PROGRAMMER I've reviewed your complete job description, and I fulfill all the qualifications required for this project. I have more than 15 years of experience in this field. I am sure if you will respond me then I will be able to explain my skills as well. I always try to provide good quality work to my clients. My key skills are: C #, C + +, C programming, Mac OS, Windows Desktop, JAVA, Software Development, Software Architecture, PHP, Java script and much more. Looking forward to work with you on this project. THANKS Regards SAYAN PROGRAMMER

I have experience in qt/qml, c++ and also have worked in audio subsystems applications in automotive domain..

Hello why QT, this can be done with Adobe AIR will wok right away on the Windows/MAC. Most of the functions can be handled with FFmpeg/FFServer. FFmpeg can create new files combine them in back-end (offsetting sound decrease speed ...) and FFserver can stream any file format to the app. Most karaoke formats are mpeg1 saved in .dat format so FFserver can play them back in any other format in real time. I have done 2 app this way and it works fine. At your service