lav2mpeg man page

lav2mpeg — easy conversion of lav files to mpeg

Synopsis

lav2mpeg [ options ] lavfile1 [lavfile2 ... lavfileN]

Description

lav2mpeg is a shell script to ease the use of the mjpeg utilities, providing a  convenient way to convert from MJPEG files to popular MPEG file formats. It supports output in VCD, medium and high rate VCD, SVCD, high rate SVCD, and generic mpeg1 and mpeg2

The input files may be any combination of AVI (.avi), Quicktime (.qt) or editlist files so long as they are all lavtools- readable (e.g. MJPEG-encoded AVI/Quicktime or DV type 2 AVI).

Options

-s/S

Turn stereo off/on                   (default auto)

-k/K

Turn keeping of raw files off/on      (default off)

-f/F

Turn use of fifos off/on              (default off)

-l/L

Turn logging of entire process off/on (default off)

-n/N

Turn "noisy logging" off/on           (default off)

-y/Y

Turn use of yuvdenoise off/on         (default off)

-m

one of Modes (see below)              (default vcd)

-e

encoding quality : 0, 1, or 2         (default 2)

-o

output file  ( defaults to firstInputFileName.mpg )

-b

video bitrate in kbps  ( only used when -o is "mpeg1" or "mpeg2" )

-a

audio bitrate in kpbs  ( only used when -o is not "vcd*" )

-q

quality for mpeg2enc   ( only used when -o is "mpeg1" or "mpeg2" )

-d

dimensions XxY         ( only used when -o is "mpeg1" or "mpeg2" ) defaults to same as input

Modes

vcd -- standard VCD        (352x240 or 352x288)

vcd_medium -- 1550kbps video VCD  (352x240 or 352x288)

vcd_high -- 1800kbps video VCD  (352x240 or 352x288)

svcd -- standard SVCD       (480x480 or 480x576)

svcd_high -- 3000kbps(max) vbr @qual=5 (480x480 or 480x576)

mpeg1 -- honor -a -b -q -d flags default resolution same as input

mpeg2 -- honor -a -b -q -d flags default resolution same as input

Files

~/.lav2mpegrc

user configuration file. It is bash sourceable, and can modify any of the environment variables mentioned in the Environment section, or set the LAV2MPEG_OPTIONS variable to add default options.

Environment

NICEVAL

the nice value of each command, set using 'nice -n command'

YUVSCALER

modify which command is called for yuvscaler

LAV2WAV

modify which command is called for lav2wav

MPLEX

modify which command is called for mplex

YUVDENOISE

modify which command is called for yuvdenoise

MPEG2ENC

modify which command is called for mpeg2enC

AUDIOENC

audioenc is similar to those above, however, if it is set to 'mp2enc' it will use mp2enc rather than toolame, and set flags appropriotely.

NOISYLOGFILE

set the file used for noisy logging (-N) defaults to outputfile.log

QUIETLOG

set the file used for quiet logging. defaults to lav2mpeg.log if set to "" it will log only to screen

LOGDATE

defaults to 1, set to 0 to not have the date logged in log or output (see man date for more info)

LOGDATESTR

will pass this on to 'date' to describe what time format to use.  Only used if LOGDATE is not 0

LOGCOMMANDS

if set to non-zero, will log to the quite log the commands used.  Commands are always logged to NOISYLOGFILE if used

LOGONLY

if set to non-zero, will only log the commands it would use but not actually run any commands

LAV2MPEGRC

the lav2mpegrc file.  Only beneficial if set from environment variable.

VCD_MEDIUM_BR

video bitrate for mode=vcd_medium

VCD_HIGH_BR

video bitrate for mode=vcd_high

SVCD_HIGH_BR

video bitrate for mode=svcd_high

SVCD_HIGH_QUAL

quality used (-q 0-30 to mpeg2enc) for SVCD_HIGH

SVCD_HIGH_BUFFSIZE

buffsize (-V to mpeg2enc) used for svcd_high defaults to 100

EXTRA_LAV2YUV

set extra command line arguments to lav2yuv, which will be added on the end

EXTRA_YUVSCALER

set extra command line arguments to yuvscaler, which will be added on the end

EXTRA_MPEG2ENC

set extra command line arguments to mpeg2enc, which will be added on the end

EXTRA_LAV2WAV

set extra command line arguments to lav2wav, which will be added on the end

EXTRA_AUDIOENC

set extra command line arguments to mp2enc or toolame (depending on AUDIOENC), which will be added on the end

EXTRA_MPLEX

set extra command line arguments to mplex, which will be added on the end

EXTRA_YUVDENOISE

set extra command line arguments to yuvdenoise, which will be added on the end

Diagnostics

To simply see the commands that lav2mpeg would have called, run 'LOGONLY=1 lav2mpeg ...'

Bugs

Possibly.  Please let the author know.

Author

Scott Moser <smoser at brickies dot net>

Examples

create a VCD compliant mpeg regardless of input named file.mpg
lav2mpeg file.avi

create a SVCD high rate mpeg from input named out.mpg
lav2mpeg -o out.mpg -m svcd_high file.avi

use lav2yuv.new for instead of lav2yuv, and add the '-M MMX' flag to
yuvscaler:
LAV2YUV="lav2yuv.new" EXTRA_YUVSCALER="-M MMX" lav2mpeg file.avi

Please read other examples included in documentation for .lav2mpegrc 
usage

Info

JANUARY 2002 MJPEG Tools Team MJPEG tools manual