[MPlayer-users] Encode HD to lower resolution to play without "your system is too SLOW"

[infernix]

Dmitry Antipov wrote:
> a) Can you also provide a few hints related to sound processing ? Why it's
> better to process audio stream separately ?

I won't argue why it's better or worse, but I happen to use mkv (and 
thus mkvtoolnix package) as my container of choice and it is very 
flexible. It supports adding multiple audio streams and it is incredibly 
easy to use. It even has a GUI (mmg) for ease of use.

Besides that, it gives room for audio processing outside of what 
mencoder can do. I could take the audio, convert to wave, apply effects 
(of any kind) and then transcode it to the same or a different format. 
All while the video encode is in progress.

I guess it's just one way of doing it. It's probably well possible to do 
much with mencoder directly, and you probably should if you're not using 
mkv.

> b) Did you ever seen an issue described above (sound restart from 0 
> after seeking) ?
> I've observed it only if I've used '-oac lavc' and, for example, '-oac 
> mp3lame' works fine.

Afraid not, see above :)

> AVI is just a container, isn't it ? Why it can't contain audio stream in 
> the original
> source format ? Where is an incompatibility ?

I wouldn't have a clue, but I know that x264 in avi is frowned upon. And 
I don't encode to anything else but x264 nowadays.