On Tue, 5 Oct 2010 22:11:32 +0200 Jochen Schulz <m...@well-adjusted.de> wrote:
> Celejar: > > On Tue, 5 Oct 2010 18:58:05 +0200 > > Jochen Schulz <m...@well-adjusted.de> wrote: > >> > >> ffmpeg uses a fixed default for geometry (-s) and quality (-sameq, > >> -qscale, -vb etc.). You have to set both explicitly if you need anything > >> else (which you usually do). > > > > Thanks. Is there a tutorial for simple transcoding that you can > > recommend? > > Unfortunately, no. My experience (limited to transcoding DVD material) > is that there is no single command line that delivers a good > quality/time trade-off for all input files. I don't even care that much about time; I can let the commands run in the background, or when I won't be using the system. > > I don't have the time or interest for anything fancy, just > > basic transcoding between formats, preserving as much of the quality of > > the original as possible. > > Check out Handbrake. It lets you choose from sensible presets, IIRC. Ron also recommended it; I'll have to take a look. > > And shouldn't there be a simple switch or option that does pretty much > > that, i.e., "change the format, but keep the size and quality as close > > as possible to the original"? > > > > And why on earth is the default behavior to multiply the size by a > > factor of four just to retain the same quality? Is mp4 really such an > > inferior format to flv that this is required to retain the level of > > quality? > > No, but encoding from one lossy format to another with as little loss as > possible is a task quite hard. In my opinion, -sameq has little or no > use for real-life usage. Use qscale or something like that and see what > you get. > > > Apologies in advance if these are naive questions, but I know little > > about this, and transcoding seems to be a sufficiently complex and > > arcane subject that simple web searching will only take one so far. > > Your impression matches mine. :) Thanks! Celejar -- foffl.sourceforge.net - Feeds OFFLine, an offline RSS/Atom aggregator mailmin.sourceforge.net - remote access via secure (OpenPGP) email ssuds.sourceforge.net - A Simple Sudoku Solver and Generator -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20101005162915.ff96759a.cele...@gmail.com
