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7x1x

Member

From: Japan

Registered: 2009-10-16

Posts: 34

K9copy, ffmpeg and libvorbis problems

Hi, I am trying to create an mkv file using k9copy and libvorbis. I would like to use libvorbis for the audio as I have heard its better quality than the ffmpeg vorbis encoder. The problem is that the audio bitrate is 0kbps in the final file.

To use libvorbis  I opened Settings->Encoders->Audio Codecs->Ffmpeg, then clicked "add" and used audio options box which appeared. The current command is: -acodec libvorbis -ab $AUDBRk -ac 2

I have checked the command with the ffmpeg documentation and it appears to be correct.

Any ideas?

skottish

Forum Fellow

From: Here

Registered: 2006-06-16

Posts: 7,942

Re: K9copy, ffmpeg and libvorbis problems

This is a FFmpeg bug that I see with other audio types and mkv containers. I would check the following site and see if anyone has posted the same problem. If not, file a bug report:

https://roundup.mplayerhq.hu/roundup/ffmpeg

And, you are correct about the sound quality. The devs at FFmpeg don't like vorbis (or theora, ogg, ogv, ogm... really anything from Xiph), so development is more of an out-of-necessity thing.

7x1x

Member

From: Japan

Registered: 2009-10-16

Posts: 34

Re: K9copy, ffmpeg and libvorbis problems

Found the bug report:
https://roundup.mplayerhq.hu/roundup/ffmpeg/issue1325
And one that could be related:
https://roundup.mplayerhq.hu/roundup/ffmpeg/issue643

Going to give handbrake a go as it looks to use libvorbis.

Last edited by 7x1x (2010-11-02 22:15:13)