[MEncoder-users] image sequence output, distorted colours.

[James Tripp]

Hi,

someone was having trouble encoding image sequences that he'd first run through exiftran with: exiftran -a -i -p *.jpg
Here is sample material:
http://stuff.nieko.net/burst/

mencoder mf://r*.JPG -mf fps=10:type=jpeg -ovc xvid -xvidencopts bitrate=1600 -oac copy -o output.avi

MEncoder Sherpya-SVN-r22870-4.1.2 (C) 2000-2006 MPlayer Team
CPU: Intel(R) Pentium(R) 4 CPU 2.40GHz (Family: 15, Model: 2, Stepping: 9)
CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2

success: format: 16  data: 0x0 - 0x0
MF file format detected.
[mf] search expr: r*.JPG
[mf] number of files: 2 (8)
VIDEO:  [IJPG]  0x0  24bpp  10.000 fps    0.0 kbps ( 0.0 kbyte/s)
[V] filefmt:16  fourcc:0x47504A49  size:0x0  fps:10.00  ftime:=0.1000
xvid: using library version 1.1.2 (build xvid-1.1.2)
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffmjpeg] vfm: ffmpeg (FFmpeg MJPEG decoder)
==========================================================================
VDec: vo config request - 180 x 240 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 3)
Movie-Aspect is 0.75:1 - prescaling to correct movie aspect.
videocodec: XviD (180x240 fourcc=44495658 [XVID])
xvid: par=0/0 (vga11), displayed=180x240, sampled=180x240
xvid: CBR Rate Control -- bitrate=1600kbit/s
Writing header...
ODML: vprp aspect is 12288:16384.
Writing header...
ODML: vprp aspect is 12288:16384.
Pos:   0.1s      1f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]
Pos:   0.1s      2f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]Flushing video frames.
Writing index...
Writing header...
ODML: vprp aspect is 12288:16384.

Video stream:  584.880 kbit/s  (73110 B/s)  size: 14622 bytes  0.200 secs  2 frames



whereas the same with the pics not run through exiftran gives:



MEncoder Sherpya-SVN-r22870-4.1.2 (C) 2000-2006 MPlayer Team
CPU: Intel(R) Pentium(R) 4 CPU 2.40GHz (Family: 15, Model: 2, Stepping: 9)
CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2

success: format: 16  data: 0x0 - 0x0
MF file format detected.
[mf] search expr: q*.JPG
[mf] number of files: 3 (12)
VIDEO:  [IJPG]  0x0  24bpp  10.000 fps    0.0 kbps ( 0.0 kbyte/s)
[V] filefmt:16  fourcc:0x47504A49  size:0x0  fps:10.00  ftime:=0.1000
xvid: using library version 1.1.2 (build xvid-1.1.2)
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffmjpeg] vfm: ffmpeg (FFmpeg MJPEG decoder)
==========================================================================
VDec: vo config request - 320 x 240 (preferred colorspace: Planar 422P)
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
VDec: using Planar 422P as output csp (no 1)
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
SwScaler: reducing / aligning filtersize 1 -> 4
SwScaler: reducing / aligning filtersize 1 -> 4
SwScaler: reducing / aligning filtersize 1 -> 1
SwScaler: reducing / aligning filtersize 9 -> 8
[swscaler @ 00C8D020]SwScaler: BICUBIC scaler, from yuv422p to yuv420p using MMX2
[swscaler @ 00C8D020]SwScaler: using 4-tap MMX scaler for horizontal luminance scaling
[swscaler @ 00C8D020]SwScaler: using 4-tap MMX scaler for horizontal chrominance scaling
[swscaler @ 00C8D020]SwScaler: using 1-tap MMX "scaler" for vertical scaling (YV12 like)
[swscaler @ 00C8D020]SwScaler: 320x240 -> 320x240
videocodec: XviD (320x240 fourcc=44495658 [XVID])
xvid: par=0/0 (vga11), displayed=320x240, sampled=320x240
xvid: CBR Rate Control -- bitrate=1600kbit/s
Writing header...
ODML: vprp aspect is 4:3.
Writing header...
ODML: vprp aspect is 4:3.
Pos:   0.1s      1f (50%)  0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]
Pos:   0.1s      2f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]
VDec: vo config request - 624 x 352 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 3)
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
Pos:   0.2s      3f (100%)  0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]

Flushing video frames.
Writing index...
Writing header...
ODML: vprp aspect is 4:3.

Video stream: 1081.600 kbit/s  (135200 B/s)  size: 40560 bytes  0.300 secs  3 frames


I don't know exiftran and what it does to the image, but based on the different colorspace output by the video decoder I tried adding:
-vf scale,format=rgb24  or yuy2 or ....
just tries a few times and fails:

VDec: vo config request - 180 x 240 (preferred colorspace: Planar YV12)
[PP] Using external postprocessing filter, max q = 6.
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]

I'm interested in finding out what's wrong,
workarounds.

ty
Tripp


       
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