[SOLVED] AVI file have terrible audio quality after loading into CINELERRA

iqbala · 07-13-2014, 10:52 AM

I successfully installed Cinelerra, which is great.

I have many .AVI files obtained with my Canon camera that I want to join, rotate, and so on

I managed to upload them into cinelerra, but when I reproduce them (directly inside Cinelerra) the audio quality is extremely poor.

Can anybody tip me on which parameter I should try playing with in order to improve this?

Thanks

Andy Alt · 07-22-2014, 10:29 PM

Do you know if it's trying to use PulseAudio?

How to debug PulseAudio problems

Which Linux distribution are you using?

iqbala · 07-23-2014, 02:21 PM

I am using Kubuntu 12.04, Precise Pangolin

How can I know if it is trying to use PulseAudio?

Andy Alt · 07-24-2014, 08:06 PM

Can you determine that by looking at the settings in Cinelerra? It may show that PulseAudio is the default sound system it's trying to use.

iqbala · 07-26-2014, 04:07 AM

It isn't.

It is ALSA.

Andy Alt · 07-26-2014, 06:32 PM

From the Cinellera manual:

http://cinelerra.org/docs/split_manu...nual_en_5.html

Quote:

Because AVI (Audio-Video Interleave) is so fragmented with varied audio and video codecs, you may not be able to play all AVI formatted files.

Re-encoding your file to another format may help, otherwise...

Would a program such as LiVes work for your purposes?

Quote:

LiVES mixes realtime video performance and non-linear editing in one professional quality application. It will let you start editing and making video right away, without having to worry about formats, frame sizes, or framerates. It is a very flexible tool which is used by both professional VJ's and video editors - mix and switch clips from the keyboard, use dozens of realtime effects, trim and edit your clips in the clip editor, and bring them together using the multitrack timeline. You can even record your performance in real time, and then edit it further or render it straight away.

iqbala · 07-27-2014, 07:12 AM

I will give it a try.

Actually, all I have to do is rotating by 90 degrees some family video made with my canon photo camera.

I tried also Kdenlive, and it works, but with Kdenlive I can only render it as MPEG2 (due to the unsolved problems that I explained here http://www.linuxquestions.org/questi...cs-4175511141/), which looses some quality in video.

Otherwise I found a workaround to import correctly in cinelerra:

* Open the AVI file with Audacity. It will load only the audio track.
* Save the audio track as .ogg
* Open the AVI file with Cinelerra
* Delete the audio track and substitute it with the .ogg audio file

This actually works, but I have problems also rendering the file with Cinelerra: a very few formats seem to be supported, among with AVI, but the rendering of the audio is terrible (once again).

Andy Alt · 07-27-2014, 01:11 PM

Quote:

Originally Posted by iqbala

I will give it a try.
Actually, all I have to do is rotating by 90 degrees some family video made with my canon photo camera.

Avidemux may be a good option for you then. Good luck.

iqbala · 07-30-2014, 12:47 PM

Thank you very much.

Avidemux worked just fine.

:-)

Andy Alt · 07-30-2014, 03:22 PM

You're welcome. Thanks for letting me know.

At the top of this post, under "thread tools" you can mark this thread as solved.

Cheers...