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Tue, May 21

Bastien Montagne (mont29) closed T60715: Heap-use-after-free error on exit of debug build (in Audaspace area) as Archived.

Archiving, cannot reproduce that anymore with current own builds… Probably a mysterious glitch in libs/compiler/linker magic.

Tue, May 21, 10:01 AM · Audio, BF Blender

May 10 2019

Joerg Mueller (nexyon) closed T64376: Module 'aud' has no attribute 'device' as Invalid.

Blender 2.8 uses the latest version of audaspace where the aud API has changed considerably, please refer to the audaspace bindings API documentation.

May 10 2019, 9:34 AM · Audio, BF Blender

May 9 2019

cuong (vuiquahuhu) updated the task description for T64376: Module 'aud' has no attribute 'device'.
May 9 2019, 8:06 PM · Audio, BF Blender
Brecht Van Lommel (brecht) assigned T64376: Module 'aud' has no attribute 'device' to Joerg Mueller (nexyon).
May 9 2019, 7:54 PM · Audio, BF Blender
cuong (vuiquahuhu) added projects to T64376: Module 'aud' has no attribute 'device': Audio, BF Blender: 2.8.
May 9 2019, 12:17 PM · Audio, BF Blender

Feb 23 2019

Joerg Mueller (nexyon) removed a project from T58153: Preview mono audio not the same as render: Video Sequencer.
Feb 23 2019, 12:21 AM · BF Blender, Audio

Feb 20 2019

Richard Antalik (ISS) added a comment to T54969: VSE crashes or hangs unpredictably 4-6 frames into certain second sound strips during rendering..

On windows you can just download and run Blender, no need to install.
Not sure about other platforms.

Feb 20 2019, 11:57 AM · Audio, Video Sequencer, BF Blender
Richard Antalik (ISS) added a comment to T58153: Preview mono audio not the same as render.

Right now I am focusing on bugs.
If there is VSE bug not tagged, I guess other devs will relay this to me If I don't catch it.

Feb 20 2019, 11:54 AM · BF Blender, Audio
Ojvind Bernander (bernander) added a comment to T54969: VSE crashes or hangs unpredictably 4-6 frames into certain second sound strips during rendering..

Okay, maybe the bug has been fixed as a side effect of something else then?
I will test on 2.80 as soon as it's officially released. I hesitate to remove my current installation in case something breaks, and I'll need to deal with reinstalling an old version...

Feb 20 2019, 10:56 AM · Audio, Video Sequencer, BF Blender
Christopher Anderssarian (Christopher_Anderssarian) added a comment to T58153: Preview mono audio not the same as render.

Yes, this is still an issue. It's a minor inconvenience for me, but others may find it a blocker in their work flow.

Feb 20 2019, 10:21 AM · BF Blender, Audio
Richard Antalik (ISS) added a comment to T58153: Preview mono audio not the same as render.

Is this still an issue?
If yes, Should I keep VSE tag?
I am trying to cleanup workboard a bit..

Feb 20 2019, 2:01 AM · BF Blender, Audio

Feb 19 2019

Richard Antalik (ISS) closed T54969: VSE crashes or hangs unpredictably 4-6 frames into certain second sound strips during rendering. as Archived.

Since last asking for information it has been 7 or more days, due to the policy of our bug tracker we will have to archive the report until the requested information is given.

Feb 19 2019, 1:02 AM · Audio, Video Sequencer, BF Blender

Feb 12 2019

Joerg Mueller (nexyon) closed T48505: VSE audio pitch changes the speed of the audio as Invalid.

@Hossein Shah (hk1ll3r), you're right the strip length stays the same, but that doesn't mean that the speed doesn't change. If you have a strip of full length (not cut on any side) and you change the pitch to 2, you'll end up with double pitch and double speed, but the strip will stay the same length, meaning that it's silent in the second half. We intentionally don't change the strip length when the pitch is changed, since this can cause many problems, especially when you animate the pitch. I hope this clarifies the issue. If not, please ask further questions on devtalk.blender.org as @Sergey Sharybin (sergey) suggested.

Feb 12 2019, 10:29 AM · Video Sequencer, Audio, BF Blender
Sergey Sharybin (sergey) added a comment to T48505: VSE audio pitch changes the speed of the audio.

@Hossein Shah (hk1ll3r), instead of re-opening old reports, make a new one. With all the information requested there.
Please note that this is not really a place for discussion, but for a bug tracking, where artists report reproducible bugs and developers fix them. For discussions there are other channels like devtalk.blender.org, or blender artists.

Feb 12 2019, 10:01 AM · Video Sequencer, Audio, BF Blender
Hossein Shah (hk1ll3r) reopened T48505: VSE audio pitch changes the speed of the audio as "Open".

I'm new to blender, not sure if this is the right place but here I try...

Feb 12 2019, 4:38 AM · Video Sequencer, Audio, BF Blender

Feb 6 2019

Richard Antalik (ISS) added a comment to T54969: VSE crashes or hangs unpredictably 4-6 frames into certain second sound strips during rendering..

Only now I realized, that this is 2.79 bug report
Can not reproduce this in 2.79 f4dc9f9d68b or in 2.8

Feb 6 2019, 4:19 PM · Audio, Video Sequencer, BF Blender

Feb 5 2019

Bastien Montagne (mont29) updated subscribers of T60715: Heap-use-after-free error on exit of debug build (in Audaspace area).

Unfortunately gcc9 is not actually installable in debian testing currently (there are some unstable packages, but broken).

Feb 5 2019, 4:34 PM · Audio, BF Blender

Feb 4 2019

Ojvind Bernander (bernander) added a comment to T54969: VSE crashes or hangs unpredictably 4-6 frames into certain second sound strips during rendering..

See attached screenshot for the codec settings.

Feb 4 2019, 6:04 PM · Audio, Video Sequencer, BF Blender
Sebastian Parborg (zeddb) triaged T54969: VSE crashes or hangs unpredictably 4-6 frames into certain second sound strips during rendering. as Needs Information from User priority.
Feb 4 2019, 5:41 PM · Audio, Video Sequencer, BF Blender

Feb 1 2019

Richard Antalik (ISS) added a comment to T61043: Blender crashes on VSE zoom / scroll timeline sometimes.

The bug was introduced in rBdbe23c545649, so it only exists in 2.8, not 2.7. And yes @Richard Antalik (ISS) I can confirm that, but it has nothing to do with this bug.

Feb 1 2019, 4:14 PM · Audio, Video Sequencer, BF Blender
Joerg Mueller (nexyon) claimed T61043: Blender crashes on VSE zoom / scroll timeline sometimes.

The bug was introduced in rBdbe23c545649, so it only exists in 2.8, not 2.7. And yes @Richard Antalik (ISS) I can confirm that, but it has nothing to do with this bug.

Feb 1 2019, 4:00 PM · Audio, Video Sequencer, BF Blender
Joerg Mueller (nexyon) closed T61043: Blender crashes on VSE zoom / scroll timeline sometimes as Resolved by committing rBd9d72cc9cba5: Fix T61043: Blender crashes on VSE zoom / scroll timeline sometimes.
Feb 1 2019, 3:59 PM · Audio, Video Sequencer, BF Blender

Jan 31 2019

Richard Antalik (ISS) raised the priority of T61043: Blender crashes on VSE zoom / scroll timeline sometimes from Needs Information from User to Confirmed, High.

@Joerg Mueller (nexyon), not sure if you are involved in audio codec stuff, can you confirm my claim: "especially mp3 can report longer length of data stream then actual length." This is just a general observation from number of mp3 files, that behave this way.

Jan 31 2019, 11:58 PM · Audio, Video Sequencer, BF Blender

Jan 22 2019

Joerg Mueller (nexyon) added a comment to T60715: Heap-use-after-free error on exit of debug build (in Audaspace area).

Just tried with setting it in C/CXX FLAGS but same result as with WITH_COMPILER_ASAN. Please let me know what you get with gcc9. If you still have it there, I fear you'll have to help me debugging this. ;)

Jan 22 2019, 10:21 PM · Audio, BF Blender
Bastien Montagne (mont29) added a comment to T60715: Heap-use-after-free error on exit of debug build (in Audaspace area).

Hrrrmmm… Well, I do not use WITH_COMPILER_ASAN either, it does not work very well for me… So I rather just edit the CMAKE_C/CXX_FLAGS_DEBUG flags in cmake, and add -fsanitize=address to both.

Jan 22 2019, 12:17 PM · Audio, BF Blender

Jan 21 2019

Joerg Mueller (nexyon) added a comment to T60715: Heap-use-after-free error on exit of debug build (in Audaspace area).

I tried reproducing - I enabled WITH_COMPILER_ASAN (and disabled cycles and libmv in order to get it compile on my machine) but I only get memory leaks when I run blender then, not the error you reported. Do you have any hints on how to reproduce it?

Jan 21 2019, 10:49 PM · Audio, BF Blender
Bastien Montagne (mont29) assigned T60715: Heap-use-after-free error on exit of debug build (in Audaspace area) to Joerg Mueller (nexyon).

@Joerg Mueller (nexyon) Assigning to you for now, guess you'll be more familiar than me with c++/templates/std weirdness. ;)

Jan 21 2019, 6:43 PM · Audio, BF Blender
Bastien Montagne (mont29) created T60715: Heap-use-after-free error on exit of debug build (in Audaspace area).
Jan 21 2019, 6:42 PM · Audio, BF Blender

Jan 17 2019

Richard Antalik (ISS) added a comment to T54969: VSE crashes or hangs unpredictably 4-6 frames into certain second sound strips during rendering..

Tried to reproduce, however in output settings value of Video Codec item is empty.
What codec do you have set?

Jan 17 2019, 12:56 AM · Audio, Video Sequencer, BF Blender

Jan 14 2019

Richard Antalik (ISS) closed T59952: Sound unlinking does nothing as Resolved.

Fixed by 3610f1fc43d0

Jan 14 2019, 11:38 PM · Datablocks and Libraries, Video Sequencer, Audio, BF Blender

Jan 2 2019

Christopher Anderssarian (Christopher_Anderssarian) triaged T58153: Preview mono audio not the same as render as Normal priority.

No worries, it's a relatively minor inconvenience and does not affect the final render (or mixdown).

Jan 2 2019, 5:18 PM · BF Blender, Audio

Dec 31 2018

Joerg Mueller (nexyon) added a comment to T58153: Preview mono audio not the same as render.

So my suspicion seems to be correct. The difference in playback is cause by the changes in OpenAL soft which now uses ambisonics (https://en.wikipedia.org/wiki/Ambisonics) based surround sound. Originally, I implemented Blender's speaker mapping based on OpenAL soft. That's why so far they have been the same. Ambisonics is actually better and ideally Blender would also go this direction for 3D sound. Unfortunately, I don't have the resources for this development right now, it's more a long term goal. If you need an short term solution, please use the configuration files as I have mentioned them. There are also ambdec files for different speaker setups including 7.1 here: https://github.com/kcat/openal-soft/tree/master/presets.

Dec 31 2018, 6:01 PM · BF Blender, Audio

Dec 30 2018

Christopher Anderssarian (Christopher_Anderssarian) added a comment to T58153: Preview mono audio not the same as render.

More testing...

Dec 30 2018, 11:55 PM · BF Blender, Audio
Christopher Anderssarian (Christopher_Anderssarian) added a comment to T58153: Preview mono audio not the same as render.

Okay, okay... so....
I've got 8 channels (speakers) so I just leave the sound preferences at 7.1 and adjust the scene audio to the project's need (as you know from T49241#489952) will the configuration you suggest work for 7.1?
And will the panning stay the same as in 2.79?

Dec 30 2018, 11:09 PM · BF Blender, Audio
Christopher Anderssarian (Christopher_Anderssarian) added a comment to T58153: Preview mono audio not the same as render.

Yep, I'm getting the same result with daily build: 2.79 Windows 64 bit December 29, 01:50:18 -111179beb0b1-.
I also confirmed this is happening in Linux (the nono audio not behaving in the same way as 2.79).
I'm still having trouble getting SDL to work. I've spun up an old Debian VM (with 2.80 Beta -266b1e2cdbc1-) with no drivers manually installed and Blender crashed upon switching to SDL.
Do audio drivers need to installed for this to work?

Dec 30 2018, 11:05 PM · BF Blender, Audio
Joerg Mueller (nexyon) added a comment to T58153: Preview mono audio not the same as render.

Finally, if you can confirm that this change in OpenAL soft is the cause, there's one thing you can do to get the same output in playback as in rendering. You have to create an openal soft configuration file named $HOME/.alsoftrc and have the following content:

Dec 30 2018, 10:34 PM · BF Blender, Audio
Joerg Mueller (nexyon) added a comment to T58153: Preview mono audio not the same as render.

Please also try a 2.79 version from the build bot here: https://builder.blender.org/download/

Dec 30 2018, 10:19 PM · BF Blender, Audio
Joerg Mueller (nexyon) added a comment to T58153: Preview mono audio not the same as render.

Hmm, SDL should work though, can you play around with the settings a bit? The sample rate 48 kHz should work fine, you can try changing the number of channels in the user preferences. Also please try setting the environment variable SDL_AUDIODRIVER to dsound or waveout and check if that helps to get SDL to work. See https://sdl.beuc.net/sdl.wiki/SDL_envvars#head-9ae11b2daf93dc3706eccf15cbf26eb6235ac634

Dec 30 2018, 9:58 PM · BF Blender, Audio
Christopher Anderssarian (Christopher_Anderssarian) added a comment to T58153: Preview mono audio not the same as render.

Sorry, a complete derp on my end...

Dec 30 2018, 8:54 PM · BF Blender, Audio
Joerg Mueller (nexyon) added a comment to T58153: Preview mono audio not the same as render.

Hey, what audio backend/device are you using? OpenAL? If so, does it work with SDL? What operating system are you on? Do you have an audio driver installed? If so, which one and which sound card do you have if any?

Dec 30 2018, 7:53 PM · BF Blender, Audio

Dec 29 2018

Richard Antalik (ISS) claimed T59952: Sound unlinking does nothing.

Will have to review this in context of font selection for text FX - Brecht modified linking / unlinking

Dec 29 2018, 5:26 PM · Datablocks and Libraries, Video Sequencer, Audio, BF Blender
Christopher Anderssarian (Christopher_Anderssarian) created T59952: Sound unlinking does nothing.
Dec 29 2018, 2:34 PM · Datablocks and Libraries, Video Sequencer, Audio, BF Blender
Christopher Anderssarian (Christopher_Anderssarian) added a comment to T58153: Preview mono audio not the same as render.

@Joerg Mueller (nexyon) Polite Nudge...

Dec 29 2018, 12:10 PM · BF Blender, Audio

Dec 6 2018

Christopher Anderssarian (Christopher_Anderssarian) added a comment to T58153: Preview mono audio not the same as render.

@Joerg Mueller (nexyon) Mind having a look?

Dec 6 2018, 7:18 PM · BF Blender, Audio
Christopher Anderssarian (Christopher_Anderssarian) assigned T58153: Preview mono audio not the same as render to Joerg Mueller (nexyon).
Dec 6 2018, 7:18 PM · BF Blender, Audio

Nov 29 2018

Christopher Anderssarian (Christopher_Anderssarian) created T58153: Preview mono audio not the same as render.
Nov 29 2018, 6:06 PM · BF Blender, Audio

Oct 31 2018

Brecht Van Lommel (brecht) moved T49241: Consolidation of FFmpeg/Audio Options from UI Redesigns to UI Tweaks on the User Interface board.
Oct 31 2018, 2:31 PM · Audio, BF Blender: 2.8, User Interface

Sep 12 2018

Alvaro (zevarito_b) added a comment to T56672: Blender open causes Echo in all applications that playback sounds..

@Joerg Mueller (nexyon) the issue was always present in this system.

Sep 12 2018, 9:26 PM · Platform: macOS, Audio, BF Blender
Joerg Mueller (nexyon) added a comment to T56672: Blender open causes Echo in all applications that playback sounds..

I have no idea what to do about that either. Sounds like a weird Mac problem. I'd like to know if it worked before on this system? If yes, what changed? MacOS update? Blender update? Is there an older Blender version that works?

Sep 12 2018, 6:52 PM · Platform: macOS, Audio, BF Blender
Bastien Montagne (mont29) raised the priority of T56672: Blender open causes Echo in all applications that playback sounds. from Needs Information from User to Normal.

not sure what we can do here, @Arto Kitula (akitula)? or maybe @Joerg Mueller (nexyon) also has some ideas?

Sep 12 2018, 6:34 PM · Platform: macOS, Audio, BF Blender

Sep 5 2018

Alvaro (zevarito_b) added a comment to T56672: Blender open causes Echo in all applications that playback sounds..

The issue (or some kind of a/v related issue) is still happening, this time even more weird, I couldn't playback a youtube video from chrome until close Blender, then suddenly worked.

Sep 5 2018, 5:03 PM · Platform: macOS, Audio, BF Blender

Sep 4 2018

Alvaro (zevarito_b) added a comment to T56672: Blender open causes Echo in all applications that playback sounds..

I didn't change the default Sound Configuration which seems to be OpenAL.
What should be the right Sound setting for this machine to use with Blender?
Meanwhile I'll try with SDL and None settings to see if the problem persist.
Thanks!

Sep 4 2018, 2:47 PM · Platform: macOS, Audio, BF Blender
Bastien Montagne (mont29) triaged T56672: Blender open causes Echo in all applications that playback sounds. as Needs Information from User priority.

That sounds more like an audio driver/system issue… Did you try with all the various audio outputs Blender supports (OpenAL, SDL, …)? In user preferences, System tab.

Sep 4 2018, 8:56 AM · Platform: macOS, Audio, BF Blender

Jul 20 2018

Bastien Montagne (mont29) closed T55414: waveforms are reprocessed when undoing as Resolved by committing rBf48e81e720c1: Fix T55414: waveforms are reprocessed when undoing.
Jul 20 2018, 12:13 PM · Audio, Video Sequencer, BF Blender
Bastien Montagne (mont29) claimed T55414: waveforms are reprocessed when undoing.

Yeah, we actually have a system to 'pass' that kind of data across undo steps, it’s just being ignored by BKE_sound_load()...
Will fix (and slightly refactor bSound flags, there is at least one flag here that is purely runtime and should be a tag ;) ).

Jul 20 2018, 12:07 PM · Audio, Video Sequencer, BF Blender

Jun 20 2018

Philipp Oeser (lichtwerk) raised the priority of T54969: VSE crashes or hangs unpredictably 4-6 frames into certain second sound strips during rendering. from Needs Information from User to Needs Triage by Developer.
Jun 20 2018, 3:22 PM · Audio, Video Sequencer, BF Blender

Jun 16 2018

John Doe (tonemgub) added a watcher for Audio: John Doe (tonemgub).
Jun 16 2018, 3:02 PM

May 9 2018

Ojvind Bernander (bernander) added a comment to T54969: VSE crashes or hangs unpredictably 4-6 frames into certain second sound strips during rendering..

Here's a simplified .blend that still crashes. It has a single image (used as a 360-frame image strip) and 2 sound files.
I don't know how to bundle the image into the .blend file, but the 2 sound files seem to be there.
I'll add the image file here, and you can re-add the image strip.

May 9 2018, 4:37 PM · Audio, Video Sequencer, BF Blender

May 7 2018

Philipp Oeser (lichtwerk) triaged T54969: VSE crashes or hangs unpredictably 4-6 frames into certain second sound strips during rendering. as Needs Information from User priority.

Cant reproduce, renders fine here.

May 7 2018, 12:57 PM · Audio, Video Sequencer, BF Blender

May 6 2018

Christopher Anderssarian (Christopher_Anderssarian) added projects to T54969: VSE crashes or hangs unpredictably 4-6 frames into certain second sound strips during rendering.: Video Sequencer, Audio.
May 6 2018, 9:33 AM · Audio, Video Sequencer, BF Blender

Apr 21 2018

Christopher Anderssarian (Christopher_Anderssarian) added a comment to T54418: VSE: audio clipping/distorted after render.

@Cerbyo (Kite)
https://docs.blender.org/manual/en/dev/data_system/scenes/properties.html?highlight=scene%20audio#audio

Apr 21 2018, 5:53 PM · Video Sequencer, Audio, BF Blender
Cerbyo (Kite) added a comment to T54418: VSE: audio clipping/distorted after render.
  1. You can set the scene audio channels under properties -> scene -> audio -> format -> audio channels.
Apr 21 2018, 3:46 PM · Video Sequencer, Audio, BF Blender
Joerg Mueller (nexyon) added a comment to T54418: VSE: audio clipping/distorted after render.
  1. You have to know what you want to do... If you can do the audio editing in Blender, do it there, if not use some other program.
Apr 21 2018, 8:08 AM · Video Sequencer, Audio, BF Blender
Christopher Anderssarian (Christopher_Anderssarian) added a comment to T54418: VSE: audio clipping/distorted after render.

@Cerbyo (Kite) I'll post on the BSE.

Apr 21 2018, 12:39 AM · Video Sequencer, Audio, BF Blender

Apr 20 2018

Cerbyo (Kite) added a comment to T54418: VSE: audio clipping/distorted after render.

So this is what I'm getting from all this:

  1. The 32 channels of the blender vse are called channels but they aren't the same as audio channels (aka mono being 1, stereo 2 channel).
Apr 20 2018, 11:47 PM · Video Sequencer, Audio, BF Blender

Apr 17 2018

Aaron Carlisle (Blendify) added a comment to T49241: Consolidation of FFmpeg/Audio Options.

Maybe it does make sure that these settings are controlled and saved in the file. At least this will keep things consistent if a studio is having multiple people us one file. Between 1 & 3, I think I like 3 best.

Apr 17 2018, 8:32 PM · Audio, BF Blender: 2.8, User Interface
Joerg Mueller (nexyon) added a comment to T49241: Consolidation of FFmpeg/Audio Options.

Looking at T54115 it sounds like system settings and not workspace settings are where the current user settings should go to, since these settings are hardware specific.

Apr 17 2018, 9:02 AM · Audio, BF Blender: 2.8, User Interface

Apr 16 2018

Aaron Carlisle (Blendify) added a comment to T49241: Consolidation of FFmpeg/Audio Options.

Your distinction between the three types of settings is pretty clear. Regarding the user preferences there is no discussion, they are stored system wide and not blend file wide. Playback will always have to happen within the bounds of the user settings. For example, if your user settings are stereo, you simply can't playback 7.1, it will be mixed down to stereo, as in @Christopher Anderssarian (Christopher_Anderssarian)'s laptop example.

Now for scene and encoding (stored in the blend file) there are three options that I see right now in terms of format (=channels) and rate (=sample rate):

  1. Keep the settings where they are and use them for encoding and playback (an option here would be to duplicate the input elements in the encoding panel, but I wouldn't remove them from the scene settings).
  2. Move the values to encoding and for playback always use the user settings.
  3. Duplicate the values and have different encoding and playback settings.
Apr 16 2018, 6:04 PM · Audio, BF Blender: 2.8, User Interface

Apr 15 2018

Joerg Mueller (nexyon) added a comment to T54418: VSE: audio clipping/distorted after render.

If your source audio file isn't using the full dynamic range of the amplitude, it is basically wasting quality. Most audio files have a dynamic range of 16 bit. If you have to double the amplitude (volume in blender = 2), you are already wasting one of these bits. At 10, you are already wasting more than 3 bits. So for any recording engineer the goal is to utilize the whole dynamic range to not lose any quality during recording. When you have a file that doesn't use the full dynamic range, then increasing the volume in audacity instead of blender doesn't make any difference in terms of outcome, so you could just do it in blender directly. The problem is of course that you don't by how much, so using audacity makes sense after all. As soon as you normalized the volume in audacity, you are using the full dynamic range, going higher in blender then leads to clipping.

Apr 15 2018, 11:22 AM · Video Sequencer, Audio, BF Blender

Apr 13 2018

Cerbyo (Kite) added a comment to T54418: VSE: audio clipping/distorted after render.

I don't understand why you said

Apr 13 2018, 4:57 AM · Video Sequencer, Audio, BF Blender

Apr 10 2018

Joerg Mueller (nexyon) closed T54418: VSE: audio clipping/distorted after render as Invalid.

Ok, then I'll close this. There is no difference in processing of the strips between mixdown and rendering. Not even to playback, the only difference there is that the user settings are used in terms of channels and sample rate.

Apr 10 2018, 8:12 PM · Video Sequencer, Audio, BF Blender
Christopher Anderssarian (Christopher_Anderssarian) added a comment to T54418: VSE: audio clipping/distorted after render.

...This approach is volume preserving and is also what OpenAL does, though Blender doesn't use OpenAL to do this in the sequencer.

Apr 10 2018, 7:08 PM · Video Sequencer, Audio, BF Blender
Joerg Mueller (nexyon) added a comment to T54418: VSE: audio clipping/distorted after render.

Ok, changing the number of channels is another story. Blender supports surround sound (=more than two channels) in contrast to Audacity.

Apr 10 2018, 5:39 PM · Video Sequencer, Audio, BF Blender
Christopher Anderssarian (Christopher_Anderssarian) added a comment to T54418: VSE: audio clipping/distorted after render.

Thanks @Joerg Mueller (nexyon) for the clarification.

Apr 10 2018, 12:02 AM · Video Sequencer, Audio, BF Blender

Apr 9 2018

Joerg Mueller (nexyon) added a comment to T54418: VSE: audio clipping/distorted after render.

Ok, there is a lot going on here and a lot of the information written here is just plainly wrong. Let me try to summarize: you're setting the volume of an audio strip to 10 and get an output that is clipped. Well, that's expected. I tried this and whatever I do, it always sounds the same - whether I play back in Blender (SDL or OpenAL), mix down (wav or flac) or render to a video (matroska, PCM). In that sense, I cannot reproduce the bug report.

Apr 9 2018, 10:56 PM · Video Sequencer, Audio, BF Blender

Apr 5 2018

Cerbyo (Kite) added a comment to T54418: VSE: audio clipping/distorted after render.

I did my first serious non-linear editing with other linux-based editors, that required rendering of audio and video separately, and then muxing them together for the final file. Computers have gotten better and faster, so sometimes it is easy to forget that there are ways to put less stress on the way data flows in computer hardware.

Apr 5 2018, 7:57 AM · Video Sequencer, Audio, BF Blender

Apr 4 2018

stephen paschke (paskperfect) added a comment to T54418: VSE: audio clipping/distorted after render.

I like your idea, Cerbyo (Kite).
Starting with the best sound possible, and adjusting volumes downward (by ear, or numbers) seems reasonable, if you are trusting of your hearing. But I have been working with blender for many years, and would caution you to stay vigilant, with visual ques (from the Audacity graphical images), as well. Projects (in Blender) that have many small clips moved around, and key-frame adjustments to volume levels, can be taxing on some computer processors.

Apr 4 2018, 5:55 AM · Video Sequencer, Audio, BF Blender
Cerbyo (Kite) added a comment to T54418: VSE: audio clipping/distorted after render.

Edit: I recorded the vse playback in audacity of a 1.0 volume strip (one I had doctored up in audacity all nicely that was imported into the vse as a single strip). And lined it up with the mixdowned version of that strip back in audacity. Playback in audacity: The recorded playback sounded clearer and better, the mixdowned version had a waveform that was clipping in some spots. EVen if i was recording the vse playback at a lower volume, thus not getting clipping, who cares! there is no way to change the volume/amplitude of the mixdowned version to get it to sound as good, cause it clipped. I would have to manually do the scene method to change the volume.....and that has countless problems to begin with including the ending audio getting cutout (so u have to put an extra strip in). I'm just gonna record the playback for now on in the vse and use that. I might try my method below still, but seriously I can see so many things going wrong....why bother. And here's what I don't get: the 1.0 volume strip was from a mixed down audacity file I have open right now....and there is noooooo clipping, and the waveform is much lower than the mixdowned waveform!?!?? THAT makes no sense based on my previous tests and the test below that say a 1.0 imported waveform will export as the same volume/waveform level. Contradictions abound. Again this was .flac 1 accuracy.
My only thoughts to leave on is the OpenAL vse SDL might have something to do with all this. As I stated earlier, OpenAL sound so much clearer on vse playback than SDL. Perhaps OpenAL is not making it into the rendering process though, thus I'm hearing some kind of jumbled SDL output? Perhaps OpenAL is applying some unknown amazing effect in the VSE playback and its making it all amazing sounding?!? But I haven't been able to recreate by recording SDL vs OpenAL via audacity capture. Regardless, I don't know anymore, I'll stick with what is working over what is supposed to be working.

Apr 4 2018, 2:06 AM · Video Sequencer, Audio, BF Blender

Apr 2 2018

Christopher Anderssarian (Christopher_Anderssarian) updated subscribers of T54418: VSE: audio clipping/distorted after render.

@Joerg Mueller (nexyon)
Your humble wizdom?

Apr 2 2018, 1:41 AM · Video Sequencer, Audio, BF Blender

Mar 31 2018

stephen paschke (paskperfect) added a comment to T54418: VSE: audio clipping/distorted after render.

I chimed in, just to let you know that I didn't think it was a good idea to use a volume level of '10', and expect that there wouldn't be a problem with an audio strip in the VSE.

Mar 31 2018, 6:47 AM · Video Sequencer, Audio, BF Blender
Christopher Anderssarian (Christopher_Anderssarian) added a comment to T54418: VSE: audio clipping/distorted after render.

After having done some testing;
there is a peculiarity to the way Blender downmixes (and whatever the name is for doing the opposite).

Mar 31 2018, 2:02 AM · Video Sequencer, Audio, BF Blender

Mar 30 2018

stephen paschke (paskperfect) added a comment to T54418: VSE: audio clipping/distorted after render.

Responding to Cerbyo (Kite):

Mar 30 2018, 11:00 PM · Video Sequencer, Audio, BF Blender
Cerbyo (Kite) added a comment to T54418: VSE: audio clipping/distorted after render.

I don't fully understand the process or how the community works as of yet. Forgive me on that front. Question: Is this case still open, do I need to give it more time, or is it a case of people can't recreate what I said and its dismissed? I feel like I'm making a big deal out of something that has been that way for a very long time and is deemed a nonissue. And in my quest for answers I am asking questions and creating a massive wall of text that normally would only serve to hinder my original issue (of which it is still a big deal for me). The more I learn, and I'm learning alot here, the more I come to the conclusion that this is a 'purposely' built limitation of the VSE, but I'm the only one who thinks its a clear decisive limitation and a huge deal!

Mar 30 2018, 12:57 AM · Video Sequencer, Audio, BF Blender

Mar 29 2018

Joerg Mueller (nexyon) added a comment to T49241: Consolidation of FFmpeg/Audio Options.

Your distinction between the three types of settings is pretty clear. Regarding the user preferences there is no discussion, they are stored system wide and not blend file wide. Playback will always have to happen within the bounds of the user settings. For example, if your user settings are stereo, you simply can't playback 7.1, it will be mixed down to stereo, as in @Christopher Anderssarian (Christopher_Anderssarian)'s laptop example.

Mar 29 2018, 11:53 AM · Audio, BF Blender: 2.8, User Interface
stephen paschke (paskperfect) added a comment to T54418: VSE: audio clipping/distorted after render.

Sorry, Cerbyo (Kite) , I'll try to say it a different way.

Mar 29 2018, 3:38 AM · Video Sequencer, Audio, BF Blender
Cerbyo (Kite) added a comment to T54418: VSE: audio clipping/distorted after render.

1.) Volume levels greater than 1.0 raise volume of input strip, in Decibels (dB), by 'value-1' dB.

Mar 29 2018, 12:38 AM · Video Sequencer, Audio, BF Blender

Mar 28 2018

Christopher Anderssarian (Christopher_Anderssarian) added a comment to T54418: VSE: audio clipping/distorted after render.

I would first check to see if you have Loudness Equalization on (Link), as that would mitigate some clipping in the realtime preview.

Mar 28 2018, 4:12 PM · Video Sequencer, Audio, BF Blender

Mar 27 2018

stephen paschke (paskperfect) added a comment to T54418: VSE: audio clipping/distorted after render.

Documentation here ( https://docs.blender.org/manual/en/dev/editors/vse/sequencer/strips/sound.html ) is missing information that was available in previous sources:

Mar 27 2018, 8:00 PM · Video Sequencer, Audio, BF Blender
Stephen Swaney (stiv) added a comment to T54418: VSE: audio clipping/distorted after render.

Thanks for checking that out.

Mar 27 2018, 4:21 PM · Video Sequencer, Audio, BF Blender
Cerbyo (Kite) added a comment to T54418: VSE: audio clipping/distorted after render.

In your User Prefs, you have System->Sound set to OpenAL (recommended for game engine usage).
Do you still have the same issue with Sound set to SDL (recommended for sequencer use) ?

Mar 27 2018, 4:44 AM · Video Sequencer, Audio, BF Blender

Mar 26 2018

LazyDodo (LazyDodo) closed T54424: Move Audio Button from Property panel to timeline as Archived.

Hi, while we love to hear these ideas, this is not the right place for them. This website is mainly used to track bug reports and not feature requests. But luckly, there are some other nice solutions you can take, so please use one of the other forms of communication listed below:

Mar 26 2018, 1:58 AM · Audio, BF Blender
LazyDodo (LazyDodo) raised the priority of T54424: Move Audio Button from Property panel to timeline from Confirmed, Low to Needs Triage by Developer.

please do NOT triage tickets your self.

Mar 26 2018, 1:58 AM · Audio, BF Blender
David (activemotionpictures) triaged T54424: Move Audio Button from Property panel to timeline as Confirmed, Low priority.
Mar 26 2018, 1:38 AM · Audio, BF Blender

Mar 25 2018

Stephen Swaney (stiv) added a comment to T54418: VSE: audio clipping/distorted after render.

In your User Prefs, you have System->Sound set to OpenAL (recommended for game engine usage).
Do you still have the same issue with Sound set to SDL (recommended for sequencer use) ?

Mar 25 2018, 8:01 PM · Video Sequencer, Audio, BF Blender
Cerbyo (Kite) created T54418: VSE: audio clipping/distorted after render.
Mar 25 2018, 3:16 AM · Video Sequencer, Audio, BF Blender

Mar 22 2018

Christopher Anderssarian (Christopher_Anderssarian) added a project to T49241: Consolidation of FFmpeg/Audio Options: Audio.

Responding to T49241#389445 T49241#389480 (Removal of the volume slider in the encoding settings)

Mar 22 2018, 11:34 PM · Audio, BF Blender: 2.8, User Interface

Jan 31 2018

Joerg Mueller (nexyon) closed T53888: Audio not playing in sync over waveform when scrubbing as Archived.

Hi, thanks for the report.

Jan 31 2018, 2:26 PM · Video Sequencer, Audio, BF Blender
Joerg Mueller (nexyon) closed T53887: Audio keeps playing even with negative frames as Archived.

Hi, thanks for the report. This is a known problem - audaspace doesn't work with negative timings. The reason for this is that blender itself wasn't really designed to work with audio - to overcome some of these problems, I had to make some design decisions that ended in not supporting negative timings. The alternative would have been to not support animation (of volume, pitch, etc.), which is definitely the worse alternative. We could at least document somewhere that negative timings don't work with audio?

Jan 31 2018, 12:47 PM · Video Sequencer, Audio, BF Blender

Jan 25 2018

Joshua Leung (aligorith) merged T53882: Video Sound Crash 2.78c and 2.79 into T52890: Unlinking an audio file causes Blender 2.78 and 2,79 to crash.
Jan 25 2018, 3:46 AM · Audio

Jan 24 2018

Philipp Oeser (lichtwerk) triaged T53887: Audio keeps playing even with negative frames as Confirmed, Medium priority.
Jan 24 2018, 7:33 PM · Video Sequencer, Audio, BF Blender