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No sound in the Sequencer Editor
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Description

Group: V 2.42a release
Resolution: Investigate
Category: Linux related

Hi,

in the bug #4512 (http://projects.blender.org/tracker/?func=detail&atid=264&aid=4512&group_id=9)
I have explained my problem with audio in the Sequencer Editor with Blender 2.41.

Now with the last version of Blender 2.42 I have a strange situation.

Case 1:
I use a Dell Inspiron laptop with ATI graphic card and an Intel Audio card and Ubuntu Dapper OS installed. If I run blender with the "-g noaudio" option I can ear the sound in video Sequencer Editor. Starting blender without this option the result is no audio.

Case 2:
I use a Hp Compaq nw9440 laptop with Nvidia graphic card and an Intel Audio card and Ubuntu Dapper OS installed. If I run blender with or without the "-g noaudio" option I can't ear the sound in video Sequencer Editor. No way to ear the sound.


Both laptop have installed the same Linux OS Distro with same update level. Both laptop use the same blender package downloaded from blender site.
In other words: same conditions, but different result.

I have tried all the possibilities on my HP laptop, but the message in the console window is always the same:
"Couldn't open audio: No available audio device"

Event Timeline

Logged In: YES
user_id=103

Our sound system is a mystery for nearly all our developers. We need someone to adopt this orphan!
I don't know a coder to assign this to even... will ask around in the mailing list.

Collegato: no
user_id=2570

Thank's Ton,

Blender is now a very powerful tool for us Linux users. It is a 3D graphical tool, a Game Engine, and finally a Video Editor with FFMPEG.
All parts of Blender are always recoded, debugged, and became more and more better: the only one exception is the sound system.
For us Linux user this is a big problem. Now that FFMPEG is arrived I can't edit my video clips because I can't ear the audio.

I have readed around in different forums (Blenderartists, Blender.it, ...) and always I meet other Linux users with this same problem.

If you find a coder that can review the entire sound system, for us Linux users this will be a very big present!

Logged In: YES
user_id=5214

I had the same prob on ubuntu dapper. I fixed it by recompiling SDL manually.

Here's my configure string for SDL:
./configure --prefix=/usr --with-gnu-ld --with-pic --enable-video-opengl --enable-dga --enable-alsa --enable-cdrom

Logged In: YES
user_id=5214

I had the same prob on ubuntu dapper. I fixed it by recompiling SDL manually.

Here's my configure string for SDL:
./configure --prefix=/usr --with-gnu-ld --with-pic --enable-video-opengl --enable-dga --enable-alsa --enable-cdrom

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user_id=2923

Peter could you have a look?

Logged In: YES
user_id=5298

this can be fixed by installing (if it's not already) the libsdl1.2debian-all
then
export SDL_AUDIODRIVER=esd
and lastly disable blender gameengine sound (I did this both in the user preferences and by the flag -g noaudio)
it seems like blender sound engine likes to get the dsp to itself otherwise, and somehow it can't get it otherwise (under ubuntu)
other solution is to get a sound card with built in hardware mixing... these are getting rarer and rarer these days.

Collegato: no
user_id=2570

Hi bassamk,

thank you very much.
Finally your suggestion function very well on my Ubuntu Edgy too.

I don't know if this is a temporary solution or not, but it funcion.

best regards
NJ

Logged In: YES
user_id=103

interesting info to add in the linux faq, will do. thanks!

Ton Roosendaal (ton) changed the task status from Unknown Status to Unknown Status.Nov 1 2006, 6:43 PM

I'm have this problem, but with different symptoms. Blender seems to claim sound is working fine, but I get no sound when running a stream in the video Sequencer Editor.

:) dpkg -l | grep sdl
ii libsdl-image1.2 1.2.10-2 image loading library for Simple DirectMedia Layer 1.2
ii libsdl1.2debian 1.2.14-6ubuntu3 Simple DirectMedia Layer
ii libsdl1.2debian-pulseaudio 1.2.14-6ubuntu3 Simple DirectMedia Layer (with X11 and PulseAudio options)

No matter how I export my SDL_AUDIODRIVER, fail. I've tried all of "esd" "pulse" "pulsed" "dma". Blender always starts happily. Here's a sample commandline with output:

:) export SDL_AUDIODRIVER=pulse ; blender -d -g noaudio
Blender 2.49 (sub 2) Build
argv[0] = blender-bin
argv[1] = -d
argv[2] = -g
argv[3] = noaudio
Compiled with Python version 2.6.6.
Checking for installed Python... got it!
Color depth r 8 g 8 b 8
Aux buffers: 4
read file
Version 247 sub 5
read file
Version 245 sub 16

ordered
OBCube
OBLamp
OBCamera

Registering scripts in Blender menus ...

Getting menu data for scripts from file:
......

Unable to load: libtiff.
Try setting the BF_TIFF_LIB environment variable if you want this support.
Example: setenv BF_TIFF_LIB /usr/lib/libtiff.so
Color depth r 8 g 8 b 8
Aux buffers: 4
Color depth r 8 g 8 b 8
Aux buffers: 4
Color depth r 8 g 8 b 8
Aux buffers: 4
Color depth r 8 g 8 b 8
Aux buffers: 4
read file ....../Projects/bernies.bird.blend
Version 249 sub 2

ordered
OBCube
OBLamp
OBCamera
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '........Videos/BerniesBird/BerniesBirdFinal.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2mp41
encoder : Lavf52.64.2
Duration: 00:06:46.10, start: 0.000000, bitrate: 9131 kb/s
Stream #0.0(und): Video: mpeg4, yuv420p, 1280x720 [PAR 1:1 DAR 16:9], 9003 kb/s, 29.97 fps, 29.97 tbr, 2997 tbn, 2997 tbc
Stream #0.1(und): Audio: mp3, 48000 Hz, 2 channels, s16, 128 kb/s
[swscaler @ 0xa5e5fc0]No accelerated colorspace conversion found from yuv420p to rgba.
[swscaler @ 0xa5e5fc0]using unscaled yuv420p -> rgba special converter

Blender quit

---

Every other package I've tried on this system that is supposed to have sound works just fine. Some examples of apps that have sound working fine: Pitivi, Ardour, Audacious, Flash inside Firefox.

Any clues for me? I'm somewhat frustrated since I have no errors. Just no working sound.

(I have also tried selecting the sound clip, then creating a FAC curve at constant value of 1.0, thinking that might be it).

This is an ancient and inactive bug report... for support you could also visit irc.freenode.net #blendercoders?
Note you start blender with 'noaudio' set...

This task was automatically closed as archived as part of migration, because the project or tracker this task belonged to is no longer active.