---------- Forwarded message ---------- From: Keith Richie <[EMAIL PROTECTED]> Date: Sun, Mar 9, 2008 at 1:04 PM Subject: Re: ogg quality problem with ffmpeg To: [EMAIL PROTECTED]
On Sun, Mar 9, 2008 at 11:58 AM, asm4 <[EMAIL PROTECTED]> wrote: > Alex Samad wrote: > > On Sat, Mar 08, 2008 at 11:57:14AM -0800, David Fox wrote: > >> On 3/8/08, asm4 <[EMAIL PROTECTED]> wrote: > >> > >>> the nominal bit rate shown by xmms or mplayer on out.ogg is 0k and > >>> average bit rate is 41.7kbps > > I don't think you can compare bit rates, ogg has better compression than > > mp3 so 128kb ogg is suppose to sound better than 128kb mp3 > > > hi all, > thanks for the replies. i compared the bit rates of 2 ogg files. one > created by using ffmpeg (0k nominal, 41k avg), the other created by > dumping a wav and converting to ogg using audacity (160k nominal,113k avg). > > > >> Is the quality (or lack of) extremely noticable? Ogg is variable rate, > >> and by "VOB" i'm thinking "movie", > >> where there may be a large variation of sound sources, compared to for > >> example a music CD. > > > the lack of quality is extremely noticable. the VOB is indeed a video > recording of a performance and i just wanted to get the sound. i can > live with dumping wav and converting using audacity. its just too much pain. > > >> > > >> Then again, it could be an ffmpeg problem. I don't have any ready vobs > >> here to test. But I routinely dump audio from other sources (such as > >> avi) and encode those with ffmpeg, but not to ogg, usually a52 because > >> I do a fair amount of dvd encoding of avi movies. > >> > >>> i have 0.cvs20070307-6 of ffmpeg and this seems to be the latest > >>> version. am i doing something wrong? or is there a better way of getting > >> There's a later version 20071206 but it's in the debian-multimedia repository. > > > i will wait till it makes into unstable. its not a pressing issue. > thanks for the suggestions. > > > -- > > > To UNSUBSCRIBE, email to [EMAIL PROTECTED] > with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] > > Try ffmpeg -i file.vob -vn -acodec vorbis -ac 2 -ab 160k out.ogg ffmpeg doesn't support multichannel vorbis encoding so the -ac 2 is needed. You can replace -ab with -aq if you want. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]