question. FAAC or MP3 lame for videos

[llmercll]

I'm not looking for hd quality here, just for some xvid files or random movies ive got laying around.

if they've got 5.1 channel i downmix them to 2 channel



what i want to know is if 128vbr mp3 is preferred over 100kb vbr aac. im looking for whatever i can to save the MOST space, without noticing quality loss on standard speakers.

i notice most xvids are 128kbps, but 100 aac seems kind of low, regardless of it being aac.

[poisondeathray]

The difference is you are re-encoding from a lossy rip, where the xvid movies had a better quality source, likely original DVD or blu-ray.

Everytime you re-encode using a lossy format you irreversibly lose more quality

This applies to both the audio & video.

If you started out with the same source, the the AAC will likely slightly sound better in most cases. NeroAAC yields better results than CT-AAC

You don't save much space shaving off 28kbps... and hard drives and DVD media are pretty cheap these days

[llmercll]

thanks for info, neroACC is the way to go then? over faac?

can you tell me what is a good setting to use?

[Midzuki]

According to the official info, "-q 1".

<COMMAND LINE>

[C:\]
=>neroaacenc -help
*************************************************************
*                                                           *
*  Nero Digital Audio Reference MPEG-4 & 3GPP Audio Encoder *
*  Copyright (C) 2006 Nero AG                               *
*  All Rights Reserved Worldwide                            *
*                                                           *
*  Package build date: Feb 12 2007                          *
*                                                           *
*  See -help for a complete list of available parameters.   *
*                                                           *
*************************************************************

Usage:
neroaacenc [options] -if <input-file> -of <output-file>
Where:
<input-file>  : Path to source file to encode.
                The file must be in Microsoft WAV format and contain PCM data.
                Specify - to encode from stdin.
                Note that multiple input files can be specified, they will be
                encoded together into a single output file with chapter marks
                indicating source file divisions.
<output-file> : Path to output file to encode to, in MP4 format.

  ==== Available options: ====

Quality/bitrate control:
-q <number>   : Enables "target quality" mode.
                <number> is a floating-point number in 0...1 range.
-br <number>  : Specifies "target bitrate" mode.
                <number> is target bitrate in bits per second.
-cbr <number> : Specifies "target bitrate (streaming)" mode.
                <number> is target bitrate in bits per second.
                When neither of above quality/bitrate options is used,
                the encoder defaults to equivalent of -q 0.5

Multipass encoding:
-2pass        : Enables two-pass encoding mode.
                Note that two-pass more requires a physical file as input,
                rather than stdin.
-2passperiod  : Overrides two-pass encoding bitrate averaging period,
  <number>    : in milliseconds.
              : Specify zero to use least restrictive value possible (default).

Advanced features / troubleshooting:
-lc           : Forces use of LC AAC profile (HE features disabled)
-he           : Forces use of HE AAC profile (HEv2 features disabled)
-hev2         : Forces use of HEv2 AAC profile
                Note that the above switches (-lc, -he, -hev2) should not be
                used; optimal AAC profile is automatically determined from
                quality/bitrate settings when no override is specified.
-hinttrack      Generates an RTP hint track in output MP4 file.
-ignorelength : Ignores length signaled by WAV headers of input file.
                Useful for certain frontends using stdin.

</COMMAND LINE>

[llmercll]

can anyone explain that to me in n00b mode?