[MEncoder-users] remove noise on MPEG-2

[Eduardo Gargiulo]

Hi all,

I'm still trying to get a high quality MPEG-2 video from a captured AVI
file (miniDV source). The command I'm using to encode is the following:

$ mencoder -of mpeg -mpegopts format=dvd -srate 48000 -af
lavcresample=48000 \
  -vf harddup,softskip -oac lavc -lavcopts acodec=ac3:abitrate=448 \
  -ovc lavc -lavcopts vcodec=mpeg2video:vrc_buf_size=1835:\
  vrc_maxrate=9800:vbitrate=4900:keyint=15:trell:mbd=2:dc=10 \
  -o iso/dvd.mpg /opt/dv4/dv-2006.07.01_22-03-42.avi

the ouput mpeg file plays on standalone DVD player, but there is some
noise on motion images; is something difficult to explain with my english,
but is some shake not present in source file. There is noise on edges of
objects too.

How can I avoid/remove that noise?

thanks in advance,

--ejg @sf.net

AVI source info

Playing /opt/dv4/dv-2006.07.01_22-03-42.avi.
AVI file format detected.
ID_VIDEO_ID=0
ID_AUDIO_ID=1
VIDEO:  [dvsd]  720x480  24bpp  29.970 fps  28771.2 kbps (3512.1 kbyte/s)
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 32000 Hz, 2 ch, s16le, 1024.0 kbit/100.00% (ratio: 128000->128000)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
ID_FILENAME=/opt/dv4/dv-2006.07.01_22-03-42.avi
ID_DEMUXER=avi
ID_VIDEO_FORMAT=dvsd
ID_VIDEO_BITRATE=28771224
ID_VIDEO_WIDTH=720
ID_VIDEO_HEIGHT=480
ID_VIDEO_FPS=29.970
ID_VIDEO_ASPECT=0.0000
ID_AUDIO_CODEC=pcm
ID_AUDIO_FORMAT=1
ID_AUDIO_BITRATE=1024000
ID_AUDIO_RATE=32000
ID_AUDIO_NCH=2
ID_LENGTH=94.63

MPEG-2 target info

Playing iso/dvd.mpg.
ID_VIDEO_ID=0
ID_AUDIO_ID=128
MPEG-PS file format detected.
VIDEO:  MPEG2  720x480  (aspect 1)  29.970 fps  9800.0 kbps (1225.0
kbyte/s)
==========================================================================
Opening audio decoder: [liba52] AC3 decoding with liba52
AC3: 2.0 (stereo)  48000 Hz  448.0 kbit/s
AUDIO: 48000 Hz, 2 ch, s16le, 448.0 kbit/29.17% (ratio: 56000->192000)
Selected audio codec: [a52] afm: liba52 (AC3-liba52)
==========================================================================
ID_FILENAME=iso/dvd.mpg
ID_DEMUXER=mpegps
ID_VIDEO_FORMAT=0x10000002
ID_VIDEO_BITRATE=9800000
ID_VIDEO_WIDTH=720
ID_VIDEO_HEIGHT=480
ID_VIDEO_FPS=29.970
ID_VIDEO_ASPECT=0.0000
ID_AUDIO_CODEC=a52
ID_AUDIO_FORMAT=8192
ID_AUDIO_BITRATE=448000
ID_AUDIO_RATE=48000
ID_AUDIO_NCH=2
ID_LENGTH=94.54