how to mix system sound?

[houcy]

There is a canvas that can play soud (from web server) and make picture move ardound. I need to mix the canvans recording with microphone input and system sound (from the canvas sound). How to mix them together and generate a video? Thanks!

[muaz-khan]

If you're loading mp3 from server (same-origin) then its easy to implement it. Do you want to record microphone+mp3+canvas?

[houcy]

Thanks for your kind help! :) I need to record microphone+system sound+canvas. The system sound is from playing audio mp3 files. There is a play button above the canvas. When I click the play button, the canvas pictures can move around and the corresponding audio files are playing. I also add a record button beside the play button, when clicking it can record the canvas+system sound+microphone. In fact I'm customing the Scratch3 project, and add a recording feature. The Scratch program can play sound when clicking the green flag button. [image: image.png] Best regards, Kevin Hou Muaz Khan <[email protected]> 于2019年6月17日周一 下午9:00写道：

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If you're loading mp3 from server (same-origin) then its easy to implement it. Do you want to record microphone+mp3+canvas? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#17?email_source=notifications&email_token=ABQHHJIZPYZKUZ5RH4Y4YLLP26DIPA5CNFSM4HYTVZ42YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODX3C2NI#issuecomment-502672693>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABQHHJO5XP6PZKSS5675SLTP26DIPANCNFSM4HYTVZ4Q> .

[houcy]

Hi Sir, Thanks for your kind reply! I do need to record microphone+system sound(not mp3 file)+canvas. And there shouldn't have any pop-up window for user to choose. Just record all the things silently when I click the record button. Can this be achieved? Thanks! Best regards, Kevin Hou Muaz Khan <[email protected]> 于2019年6月17日周一 下午9:00写道：

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If you're loading mp3 from server (same-origin) then its easy to implement it. Do you want to record microphone+mp3+canvas? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#17?email_source=notifications&email_token=ABQHHJIZPYZKUZ5RH4Y4YLLP26DIPA5CNFSM4HYTVZ42YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODX3C2NI#issuecomment-502672693>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABQHHJO5XP6PZKSS5675SLTP26DIPANCNFSM4HYTVZ4Q> .

[jimyhdolores]

Can the operating system sound be recorded?