Single file version available here.
Last updated on 2008-03-18.
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lav2mpeg is a shell script to ease the use of the mjpeg utilities, providing a convinient 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).
Usage: lav2mpeg [ -s/S -k/K -f/F -l/L -n/N -y/Y ] [ -m mode ] [ -e 0|1|2 ] [ -o outputFile ] [ -b vidbitrate ] [ -a audbitrate ] [ -q 0-30 ] [ -d XxY ] srcfile…
s/S - stereo : -s=off -S=on (default auto)
k/K - keep raw output files (.m1v, .m2v, .mp2) : -k=no -K=yes (default no)
f/F - use fifos : -f=no -F=yes (default no)
l/L - log all encoding : -l=no -L=yes (default no)
n/N - be noisy (don't hide output of tools) : -n=no -N=yes (default no)
y/Y - yuvdenoise : -y=don't use -Y=use (default e=1|2 use e=0 dont)
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 inputMODES:
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 inputEXAMPLE:
VCD: lav2mpeg file.avi
- will create a VCD compatible mpeg named file.mpg
mpeg2: lav2mpeg -m mpeg2 -o output.mpg file.edl
- will create a mpeg2 with default bitrate in same res as input
mpeg1: lav2mpeg -a 160 -b 2110 -d 320x240 -m mpeg1 -o output.mpg file.edl
- will create a mpeg2 with videobitrate=2110 and audio=160
- and resolution 320x240
debug: export LOGONLY=1; lav2mpeg -m mpeg2 -o output.mpg file.edl
- will print out the commands it would use to do this, but
- not do anythingplease see the script for more info and environment variables set/used
$ tcprobe -i test-lav2mpeg.avi
[tcprobe] RIFF data, AVI video
[avilib] V: 23.976 fps, codec=XVID, frames=70592, width=592, height=320
[avilib] A: 48000 Hz, format=0x2000, bits=0, channels=5, bitrate=384 kbps,
[avilib] 70582 chunks, 141325325 bytes, CBR
[tcprobe] summary for test-lav2mpeg.avi, (*) = not default, 0 = not detected
import frame size: -g 592x320 [720x576] (*)
frame rate: -f 23.976 [25.000] frc=1 (*)
audio track: -a 0 [0] -e 48000,0,5 [48000,16,2] -n 0x2000 [0x2000] (*)
bitrate=384 kbps
length: 70592 frames, frame_time=41 msec, duration=0:49:04.277I don't think it is MJPEG-encoded AVI. This might be the reason that the following trials failed.
documented on: 2005.08.04
LOGONLY=1 lav2mpeg -N -F -K -m svcd test-lav2mpeg.avi 17:39:46 - being noisy - using fifos- saving raw files - mode=svcd - ++ WARN: [lavinfo] Input file test-lav2mpeg.avi is not in JPEG 4:2:2 or 4:2:0 format **ERROR: [lavinfo] File test-lav2mpeg.avi has 23.976000 frames/sec, choose norm with +[np] param 17:39:46 - 'lavinfo test-lav2mpeg.avi' died! exiting 17:39:46 - maybe you don't have lavinfo. or your input flags were wrong 17:39:46 - input files must be the last input on the command line
$ LOGONLY=1 LAVINFO='lavinfo +p' lav2mpeg -N -F -K -m svcd test-lav2mpeg.avi 17:41:38 - being noisy - using fifos- saving raw files - mode=svcd - ++ WARN: [lavinfo] Input file test-lav2mpeg.avi is not in JPEG 4:2:2 or 4:2:0 format 17:41:39 - can't do logonly with fifos, turning fifos off 17:41:39 - using mode=svcd, stereo=0 audio bpr=112 17:41:39 - beginning conversion of test-lav2mpeg.avi to test-lav2mpeg.mpg 17:41:39 - had 70592 to encode 17:41:39 - beginning video encoding 17:41:39 - COMMAND=nice -n 19 lav2yuv test-lav2mpeg.avi | nice -n 19 yuvdenoise | nice -n 19 yuvscaler -O SVCD -n p | nice -n 19 mpeg2enc -a 2 -f 4 -4 1 -2 1 -o test-lav2mpeg.m2v 17:41:39 - finished video encoding ( took 0:00:00 ) 17:41:39 - beginning audio encoding 17:41:39 - COMMAND=nice -n 19 lav2wav test-lav2mpeg.avi | nice -n 19 mp2enc -b 112 -e -m -r 44100 -o test-lav2mpeg.mp2 17:41:39 - finished audio encoding ( took 0:00:00 ) 17:41:39 - beginning multiplexing 17:41:39 - COMMAND=nice -n 19 mplex -f 4 -o test-lav2mpeg.mpg test-lav2mpeg.mp2 test-lav2mpeg.m2v 17:41:39 - finished multiplexing ( took 0:00:00 ) 17:41:39 - finished encoding (took 0:00:00)
$ LAVINFO='lavinfo +p' lav2mpeg -N -F -K -m svcd test-lav2mpeg.avi 17:45:16 - being noisy - using fifos- saving raw files - mode=svcd - ++ WARN: [lavinfo] Input file test-lav2mpeg.avi is not in JPEG 4:2:2 or 4:2:0 format 17:45:16 - using mode=svcd, stereo=0 audio bpr=112 17:45:16 - beginning conversion of test-lav2mpeg.avi to test-lav2mpeg.mpg 17:45:16 - had 70592 to encode 17:45:16 - beginning encoding with fifos COMMAND=nice -n 19 mplex -f 4 -o test-lav2mpeg.mpg test-lav2mpeg.mp2 test-lav2mpeg.m2v INFO: [yuvdenoise] ======================================================== INFO: [yuvdenoise] Y4M2 Motion-Compensating-YCrCb-Denoiser INFO: [yuvdenoise] ======================================================== INFO: [yuvdenoise] Version: MjpegTools 1.6.2 INFO: [yuvscaler] yuvscaler 1.6.2 (31-12-2003) is a general scaling utility for yuv frames INFO: [yuvscaler] (C) 2001-2003 Xavier Biquard <xbiquard@free.fr>, yuvscaler -h for help, or man yuvscaler INFO: [mplex] mplex version 1.6.2 (2.2.3 $Date: 2004/01/13 20:45:26 $) ++ WARN: [lav2wav] Input file test-lav2mpeg.avi is not in JPEG 4:2:2 or 4:2:0 format **ERROR: [lav2wav] File test-lav2mpeg.avi has 23.976000 frames/sec, choose norm with +[np] param ++ WARN: [lav2yuv] Input file test-lav2mpeg.avi is not in JPEG 4:2:2 or 4:2:0 format **ERROR: [lav2yuv] File test-lav2mpeg.avi has 23.976000 frames/sec, choose norm with +[np] param **ERROR: [yuvdenoise] Couldn't read YUV4MPEG header: system error (failed read/write)! **ERROR: [yuvscaler] Could'nt read YUV4MPEG header! **ERROR: [mp2enc] EOF in WAV header **ERROR: [mp2enc] failure reading WAV file INFO: [mpeg2enc] SETTING EXTENDED MMX for MOTION! INFO: [mpeg2enc] SETTING MMX for TRANSFORM! INFO: [mpeg2enc] SETTING EXTENDED MMX for PREDICTION! **ERROR: [mpeg2enc] Could not read YUV4MPEG2 header: system error (failed read/write)!
— and was hanging there forever, no cpu usage
$ LAVINFO='lavinfo +p' lav2mpeg -N -L -K -y -m svcd test-lav2mpeg.avi 18:13:47 - being noisy - logging all - saving raw files - not using yuvdenoise - mode=svcd - ++ WARN: [lavinfo] Input file test-lav2mpeg.avi is not in JPEG 4:2:2 or 4:2:0 format 18:13:47 - not using yuvdenoiser, dodenoise=0 18:13:47 - using mode=svcd, stereo=0 audio bpr=112 18:13:47 - logging everything to test-lav2mpeg.log 18:13:47 - beginning conversion of test-lav2mpeg.avi to test-lav2mpeg.mpg 18:13:47 - had 70592 to encode 18:13:47 - beginning video encoding COMMAND=nice -n 19 lav2yuv test-lav2mpeg.avi | nice -n 19 yuvscaler -O SVCD -n p | nice -n 19 mpeg2enc -a 2 -f 4 -4 1 -2 1 -o test-lav2mpeg.m2v INFO: [yuvscaler] yuvscaler 1.6.2 (31-12-2003) is a general scaling utility for yuv frames INFO: [yuvscaler] (C) 2001-2003 Xavier Biquard <xbiquard@free.fr>, yuvscaler -h for help, or man yuvscaler INFO: [mpeg2enc] SETTING EXTENDED MMX for MOTION! INFO: [mpeg2enc] SETTING MMX for TRANSFORM! INFO: [mpeg2enc] SETTING EXTENDED MMX for PREDICTION! ++ WARN: [lav2yuv] Input file test-lav2mpeg.avi is not in JPEG 4:2:2 or 4:2:0 format **ERROR: [lav2yuv] File test-lav2mpeg.avi has 23.976000 frames/sec, choose norm with +[np] param **ERROR: [yuvscaler] Could'nt read YUV4MPEG header! **ERROR: [mpeg2enc] Could not read YUV4MPEG2 header: system error (failed read/write)! 18:13:48 - finished video encoding ( took 0:00:01 - 70592.000 fps) 18:13:48 - beginning audio encoding COMMAND=nice -n 19 lav2wav test-lav2mpeg.avi | nice -n 19 mp2enc -b 112 -e -m -r 44100 -o test-lav2mpeg.mp2 ++ WARN: [lav2wav] Input file test-lav2mpeg.avi is not in JPEG 4:2:2 or 4:2:0 format **ERROR: [lav2wav] File test-lav2mpeg.avi has 23.976000 frames/sec, choose norm with +[np] param **ERROR: [mp2enc] EOF in WAV header **ERROR: [mp2enc] failure reading WAV file 18:13:48 - finished audio encoding ( took 0:00:00 ) 18:13:48 - beginning multiplexing COMMAND=nice -n 19 mplex -f 4 -o test-lav2mpeg.mpg test-lav2mpeg.mp2 test-lav2mpeg.m2v INFO: [mplex] mplex version 1.6.2 (2.2.3 $Date: 2004/01/13 20:45:26 $)
— and was hanging there forever, no cpu usage
documented on: 2005.08.02