guelinator
4th February 2005, 19:48
hi everyone..
i am playing with mencoder to make a handy dvd to divx encoder with ac3. unfortunately mencoder mixes up the channels.
in fact the center channels goes to right surround, and the right surround to somewhere else, however only the front left seems to be okay.
i am using mencoder with -channels 6. if a do not add this option, everything gets mixed down to stereo.
does anyone have experience with that ?
best regards
gülinator
what i do is about that:
D:\DVDSampleDisc>c:\progs\video\mencoder\mencoder.exe "ac3testFAKEVIDEO.mpg" -al
ang de,en -oac lavc -ovc lavc -lavcopts vpass=1:vbitrate=
800:acodec=ac3:abitrate=256 -o "ac3.avi" -vf scale=640:400,crop=640:290:0:55 -channels 6
MEncoder dev-CVS-050201-21:13-3.4.2 (C) 2000-2005 MPlayer Team
CPU: Advanced Micro Devices Athlon MP/XP Thoroughbred (Family: 6, Stepping: 1)
Detected cache-line size is 64 bytes
CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 0 SSE2: 0
Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx SSE
File not found: 'frameno.avi'
Failed to open frameno.avi
success: format: 0 data: 0x0 - 0x15e3804
MPEG-PS file format detected.
VIDEO: MPEG2 720x576 (aspect 2) 25.000 fps 5000.0 kbps (625.0 kbyte/s)
[V] filefmt:2 fourcc:0x10000002 size:720x576 fps:25.00 ftime:=0.0400
==========================================================================
Opening audio decoder: [liba52] AC3 decoding with liba52
Using 3DNowEx optimized IMDCT transform
AC3: 5.1 (3f+2r+lfe) 48000 Hz 448.0 kbit/s
Using MMX optimized resampler
AUDIO: 48000 Hz, 6 ch, 16 bit (0x9), ratio: 56000->576000 (448.0 kbit)
Selected audio codec: [a52] afm:liba52 (AC3-liba52)
==========================================================================
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1 (-1=autodetect) osd: 1
Opening video filter: [crop w=640 h=290 x=0 y=55]
Crop: 640 x 290, 0 ; 55
Opening video filter: [scale w=640 h=400]
==========================================================================
Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
VDec: vo config request - 720 x 576 (preferred csp: Mpeg PES)
The selected video_out device is incompatible with this codec.
VDecoder init failed :(
Opening video decoder: [libmpeg2] MPEG 1/2 Video decoder libmpeg2-v0.4.0b
Selected video codec: [mpeg12] vfm:libmpeg2 (MPEG 1 or 2 (libmpeg2))
==========================================================================
Building audio filter chain for 48000Hz/6ch/16bit -> 48000Hz/6ch/16bit...
Writing AVI header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp h
eader.
VDec: vo config request - 720 x 576 (preferred csp: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
SwScaler: reducing / aligning filtersize 6 -> 8
SwScaler: reducing / aligning filtersize 6 -> 8
SwScaler: reducing / aligning filtersize 7 -> 6
SwScaler: reducing / aligning filtersize 7 -> 6
SwScaler: BICUBIC scaler, from Planar YV12 to Planar YV12 using MMX2
videocodec: libavcodec (640x290 fourcc=58564944 [DIVX])
ODML: Aspect information not (yet?) available or unspecified, not writing vprp h
eader.
1 duplicate frame(s)!
Pos: 1.0s 27f ( 5%) 0fps Trem: 0min 4mb A-V:0.082 [1544:256]
Skipping frame!
Pos: 30.8s 771f (92%) 39fps Trem: 0min 4mb A-V:0.054 [836:256]]
Flushing video frames
i am playing with mencoder to make a handy dvd to divx encoder with ac3. unfortunately mencoder mixes up the channels.
in fact the center channels goes to right surround, and the right surround to somewhere else, however only the front left seems to be okay.
i am using mencoder with -channels 6. if a do not add this option, everything gets mixed down to stereo.
does anyone have experience with that ?
best regards
gülinator
what i do is about that:
D:\DVDSampleDisc>c:\progs\video\mencoder\mencoder.exe "ac3testFAKEVIDEO.mpg" -al
ang de,en -oac lavc -ovc lavc -lavcopts vpass=1:vbitrate=
800:acodec=ac3:abitrate=256 -o "ac3.avi" -vf scale=640:400,crop=640:290:0:55 -channels 6
MEncoder dev-CVS-050201-21:13-3.4.2 (C) 2000-2005 MPlayer Team
CPU: Advanced Micro Devices Athlon MP/XP Thoroughbred (Family: 6, Stepping: 1)
Detected cache-line size is 64 bytes
CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 0 SSE2: 0
Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx SSE
File not found: 'frameno.avi'
Failed to open frameno.avi
success: format: 0 data: 0x0 - 0x15e3804
MPEG-PS file format detected.
VIDEO: MPEG2 720x576 (aspect 2) 25.000 fps 5000.0 kbps (625.0 kbyte/s)
[V] filefmt:2 fourcc:0x10000002 size:720x576 fps:25.00 ftime:=0.0400
==========================================================================
Opening audio decoder: [liba52] AC3 decoding with liba52
Using 3DNowEx optimized IMDCT transform
AC3: 5.1 (3f+2r+lfe) 48000 Hz 448.0 kbit/s
Using MMX optimized resampler
AUDIO: 48000 Hz, 6 ch, 16 bit (0x9), ratio: 56000->576000 (448.0 kbit)
Selected audio codec: [a52] afm:liba52 (AC3-liba52)
==========================================================================
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1 (-1=autodetect) osd: 1
Opening video filter: [crop w=640 h=290 x=0 y=55]
Crop: 640 x 290, 0 ; 55
Opening video filter: [scale w=640 h=400]
==========================================================================
Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
VDec: vo config request - 720 x 576 (preferred csp: Mpeg PES)
The selected video_out device is incompatible with this codec.
VDecoder init failed :(
Opening video decoder: [libmpeg2] MPEG 1/2 Video decoder libmpeg2-v0.4.0b
Selected video codec: [mpeg12] vfm:libmpeg2 (MPEG 1 or 2 (libmpeg2))
==========================================================================
Building audio filter chain for 48000Hz/6ch/16bit -> 48000Hz/6ch/16bit...
Writing AVI header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp h
eader.
VDec: vo config request - 720 x 576 (preferred csp: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
SwScaler: reducing / aligning filtersize 6 -> 8
SwScaler: reducing / aligning filtersize 6 -> 8
SwScaler: reducing / aligning filtersize 7 -> 6
SwScaler: reducing / aligning filtersize 7 -> 6
SwScaler: BICUBIC scaler, from Planar YV12 to Planar YV12 using MMX2
videocodec: libavcodec (640x290 fourcc=58564944 [DIVX])
ODML: Aspect information not (yet?) available or unspecified, not writing vprp h
eader.
1 duplicate frame(s)!
Pos: 1.0s 27f ( 5%) 0fps Trem: 0min 4mb A-V:0.082 [1544:256]
Skipping frame!
Pos: 30.8s 771f (92%) 39fps Trem: 0min 4mb A-V:0.054 [836:256]]
Flushing video frames