[MEncoder-users] converting Geovision AVI files with mencoder

[L. Lee]

On 3/2/12 10:08 AM, "Ed Ravin" <eravin at panix.com> wrote:

> I'm new to mencoder and mplayer.  I am trying to convert Geovision
> AVI files (from a CCTV system) into MPEG4 or any other format that
> can be played without needing access to Geovision's software.
> I'm using Ubuntu 10.10 (x86, 32 bit) and MPlayer 1.0rc4-4.4.5 from
> the Maverick repositories.
> 
> The Geovision files can be viewed with mplayer without any problems.
> But when I try to use mencoder to convert or copy out the video, I
> get "duplicate frame" errors as shown below in the sample attempt to
> extract a few seconds of video.  An output file is created, but it
> is always 4108 bytes in size and contains no video.
> 
> Two listings below - first, the errors from mencoder, and after
> that the output from mplayer when it successfully plays the
> Geovision file.
> 
> Any suggestions on how to proceed?
> 
> Thanks,
> 
> -- Ed
> 
> --------------------------------------------------
> 
> $ mencoder -ni -ovc copy -oac copy -ss 400 -endpos 2 testin.avi -o testout.avi
> MEncoder 1.0rc4-4.4.5 (C) 2000-2010 MPlayer Team
> success: format: 0  data: 0x0 - 0x168ee00
> AVI file format detected.
> [aviheader] Video stream found, -vid 0
> [aviheader] Audio stream found, -aid 2
> 
> Badly interleaved AVI file detected - switching to -ni mode...
> AVI: No audio stream found -> no sound.
> VIDEO:  [GEOV]  320x240  24bpp  30.000 fps  270.3 kbps (33.0 kbyte/s)
> [V] filefmt:3  fourcc:0x564F4547  size:320x240  fps:30.000  ftime:=0.0333
> ==========================================================================
> Opening audio decoder: [pcm] Uncompressed PCM audio decoder
> AUDIO: 8000 Hz, 1 ch, u8, 64.0 kbit/100.00% (ratio: 8000->8000)
> Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
> ==========================================================================
> videocodec: framecopy (320x240 24bpp fourcc=564f4547)
> audiocodec: framecopy (format=1 chans=1 rate=8000 bits=8 B/s=8000 sample-1)
> Pos:   0.7s     21f (41%)  0.00fps Trem:   0min   0mb  A-V:-0.067 [0:0]
> 1 duplicate frame(s)!
> Pos:   1.1s     31f (41%)  0.00fps Trem:   0min   0mb  A-V:-0.067 [182:0]
> 1 duplicate frame(s)!
> Pos:   1.4s     41f (41%)  0.00fps Trem:   0min   0mb  A-V:-0.067 [171:0]
> 1 duplicate frame(s)!
> Pos:   1.8s     51f (41%)  0.00fps Trem:   0min   0mb  A-V:-0.067 [165:0]
> 1 duplicate frame(s)!
> Writing index...57f (41%)  0.00fps Trem:   0min   0mb  A-V:-0.053 [161:0]
> Writing header...
> ODML: Aspect information not (yet?) available or unspecified, not writing vprp
> header.
> 
> Video stream:  161.532 kbit/s  (20191 B/s)  size: 41056 bytes  2.033 secs  57
> frames
> 
> Audio stream:     -nan kbit/s  (-2147483648 B/s)  size: 0 bytes  0.000 secs
> 
> --------------------------------------------------
> 
> $ mplayer -ss 400 -endpos 2 testin.avi
> MPlayer 1.0rc4-4.4.5 (C) 2000-2010 MPlayer Team
> mplayer: could not connect to socket
> mplayer: No such file or directory
> Failed to open LIRC support. You will not be able to use your remote control.
> 
> Playing testin.avi.
> AVI file format detected.
> [aviheader] Video stream found, -vid 0
> [aviheader] Audio stream found, -aid 2
> 
> Badly interleaved AVI file detected - switching to -ni mode...
> AVI: No audio stream found -> no sound.
> VIDEO:  [GEOV]  320x240  24bpp  30.000 fps  270.3 kbps (33.0 kbyte/s)
> open: No such file or directory
> [MGA] Couldn't open: /dev/mga_vid
> open: No such file or directory
> [MGA] Couldn't open: /dev/mga_vid
> [VO_TDFXFB] Can't open /dev/fb0: Permission denied.
> [VO_3DFX] Unable to open /dev/3dfx.
> Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object
> file: No such file or directory
> [vdpau] Error when calling vdp_device_create_x11: 1
> ==========================================================================
> Opening video decoder: [vfw] Win32/VfW video codecs
> Loading codec DLL: 'GeoCodec.dll'
> Loaded DLL driver GeoCodec.dll at 10000000
> [PP] Using codec's postprocessing, max q = 9.
> Could not find matching colorspace - retrying with -vf scale...
> Opening video filter: [scale]
> Opening video filter: [flip]
> Movie-Aspect is undefined - no prescaling applied.
> [swscaler @ 0x940ab70]using unscaled bgr24 -> yuv420p special converter
> VO: [xv] 320x240 => 320x240 Planar YV12
> Selected video codec: [geov] vfm: vfw (GeoCodec)
> ==========================================================================
> ==========================================================================
> Opening audio decoder: [pcm] Uncompressed PCM audio decoder
> AUDIO: 8000 Hz, 1 ch, u8, 64.0 kbit/100.00% (ratio: 8000->8000)
> Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
> ==========================================================================
> AO: [pulse] 8000Hz 1ch u8 (1 bytes per sample)
> Starting playback...
> A:   0.0 V: 402.0 A-V:-402.000 ct:-60.100 12061/12061  8% 12%  0.0% 0 0
> 
> Exiting... (End of file)


Can you get a current version of MPlayer? Can you try the entire duration
without the -ni, -ss, and -endpos options?

Laine Lee