Hello, everyone! It's been quite a while since I don't post in the list, but I read it often. First of all, I'd like to congratulate everyone for keeping such a long term version, and I give my best wishes for the future of Cinelerra and Lumiera!
The reason I write is that loooong ago I had asked how to set up an 5.1 audio with Cinelerra (the questions and answers go below). So, as I prepared myself to compile a CV version from scratch, I went to test my audio configuration using speaker-test, to check if everything was ok. I used this command: speaker-test -Dplug:surround51 -c6 -twav Somehow, things were not ok in both my audio boards (they used to be), so I checked wires, connections, volume etc and dug a little bit on speaker-test's manual. After 5 minutes, everything got fine again, with audio coming out of all speakers. The reason I mention this is because I saw the option "-Dplug" meant the driver used. So I opened Cinelerra and tested everything on more time, using 6 channels on the timeline. Same thing: the audio level would show the output being sent to the speakers, but the audio wouldn't come out. The fix: I just tested putting "plug:surround51" in the box for the ALSA driver (instead of "default" or any of the options) and it worked! The audio is coming out of all boxes now! Very well then, problem solved and I didn't have to compile. Of course, I know people have updated the packages and the code, so I'd like to thank everyone for helping me a long time ago and for still helping everyone. I decided to post this because I am not sure this workaround was documented in the list! cheers, everyone! flavio 2007/10/17 Bob van Loosen <[email protected]> > ** > IL'dar AKHmetgaleev wrote: > > На Tue, 16 Oct 2007 18:21:51 -0300 > flavio <[email protected]> <[email protected]> записано: > > > > I'm trying to do a 5.1 movie here, but it seems cin is not reading > alsa correctly. I tested it both on debian and ubuntu builds, and > most probably it seems like it's an alsa issue (since puredata does't > seem to recognize the soundblaster card with alsa, only uses oss), so > I'm writing just to see if anyone has had any similar problem or has > done 5.1 videos without problems. > > But this seems very odd, because things worked on the previous debian > and alsaconf doesn't report any errors... Also, sound comes from all > 6 boxes and alsamixer recognizes the card as to increase volume, > etc... I feel a bit lost here, any hints? > > > I have same problem. Cinelerra can work only with default alsa device. > Even when I put "surround40" to device string it's sends sound to > default device. > > I think the best way to get flexible sound is jack-audio-connection-kit > especially with jack's transporter support > > > > I dug around a bit in the code, the problem is Cinelerra scans alsa > devices starting at hw:0 and going up until a device can't be opened. > From that information it builds a list of alsa devices which you can > select in the preferences. > When audio playback starts, Cinelerra cross-references the selected audio > device with the existing audio devices so it knows which device to open, > hw:1,0 for example. > If the device in the dropdown box in the preferences window doesn't exist > in the list, Cinelerra selects the default alsa device. > > It's an easy fix though, in audioalsa.C replace the line: > > err = snd_pcm_open(&dsp_in, pcm_name, stream, open_mode); > > with: > > err = snd_pcm_open(&dsp_in, device->in_config->alsa_in_device, stream, > open_mode); > > and replace the line: > > err = snd_pcm_open(&dsp_out, pcm_name, stream, open_mode); > > with: > > err = snd_pcm_open(&dsp_out, device->out_config->alsa_out_device, stream, > open_mode); > > Now it opens the alsa device with the name you enter in the dropdown box. > However, I have no idea if this will make surround sound work. > > Greetings, > > Bob van Loosen >
