[MEncoder-users] Trying convert to .mov

[Devendra Rane]

If you know the source of AVI, may be you should try changing the
vbitrate (or drop the parameter).
One reason for video speeding up is presence of B-Frames. I don't know
if there's a work around for that.

--r
PS: use "-oac lavc"


On 10/4/07, Ross Clement <rossclement at gmail.com> wrote:
> On 10/3/07, Devendra Rane <ranedk at gmail.com> wrote:
> >
> > I used the following for wmv to mov ....
> > the aglobal vglobal vcodec parameters are important.
> >
> > mencoder input.wmv -of lavf -ovc lavc -lavfopts
> > format=mov:i_certify_that_my_video_stream_does_not_use_b_frames
> > -lavcopts aglobal=1:vglobal=1:vcodec=h264:acodec=mp3 -oac mp3lame -mc
> > 0  -o target.mov
> > p://lists.mplayerhq.hu/mailman/listinfo/mencoder-users
> >
>
> Apologies for my previous email. My laptop has a rather sensitive mouse and
> I sent prematurely.
>
> I've tried to use the above command. The exported file plays absolutely fine
> in Quicktime on a Mac, and imports into Protools fine.
>
> Except, on playback the movie plays back too fast. The audio plays back at
> the correct speed, and hence the movie gets progressively further and
> further ahead of the audio. I can't understand what I am doing wrong.
>
> Here is the command that I used to convert my movie. "junk.avi" plays at the
> correct speed.
>
> mencoder junk.avi -of lavf -ovc lavc -lavfopts
> format=mov:i_certify_that_my_video_stream_does_not_use_b_frames -lavcopts
> aglobal=1:vglobal=1:vcodec=h264:acodec=mp3:vbitrate=1000 -oac mp3lame -mc 0
> -o automation.mov
>
> Here is the output of "mplayer junk.avi". The output from "mplayer
> automation.mov" follows.
>
> [ross at q305-rc MOVIES]$ mplayer junk.avi
> MPlayer 1.0rc1-4.0.2 (C) 2000-2006 MPlayer Team
> CPU: Intel(R) Pentium(R) M processor 1.80GHz (Family: 6, Model: 13,
> Stepping: 6)CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
> Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2
>
> Playing junk.avi.
> AVI file format detected.
> VIDEO:  [CRAM]  1024x768  16bpp  25.000 fps  3342.9 kbps (408.1 kbyte/s)
> Clip info:
>  Software: MEncoder 1.0rc1-4.0.2
> ==========================================================================
> Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
> Selected video codec: [ffvideo1] vfm: ffmpeg (Microsoft Video 1 (native
> codec))
> ==========================================================================
> ==========================================================================
> Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
> AUDIO: 44100 Hz, 2 ch, s16le, 128.0 kbit/9.07% (ratio: 16000->176400)
> Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
> ==========================================================================
> AO: [oss] 44100Hz 2ch s16le (2 bytes per sample)
> Starting playback...
> VDec: vo config request - 1024 x 768 (preferred colorspace: BGR 15-bit)
> Could not find matching colorspace - retrying with -vf scale...
> Opening video filter: [scale]
> VDec: using BGR 15-bit as output csp (no 0)
> Movie-Aspect is undefined - no prescaling applied.
> 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: BICUBIC scaler, from bgr555 to yuv420p using MMX2
> SwScaler: using 4-tap MMX scaler for horizontal luminance scaling
> SwScaler: using 4-tap MMX scaler for horizontal chrominance scaling
> SwScaler: using 1-tap MMX "scaler" for vertical scaling (YV12 like)
> SwScaler: 1024x768 -> 1024x768
> VO: [xv] 1024x768 => 1024x768 Planar YV12
>
>
>
>
> [ross at q305-rc MOVIES]$ mplayer automation.mov
> MPlayer 1.0rc1-4.0.2 (C) 2000-2006 MPlayer Team
> CPU: Intel(R) Pentium(R) M processor 1.80GHz (Family: 6, Model: 13,
> Stepping: 6)CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
> Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2
>
> Playing automation.mov.
> ISO: File Type Major Brand: Original QuickTime
> Quicktime/MOV file format detected.
> VIDEO:  [avc1]  1024x768  24bpp  25.000 fps    0.0 kbps ( 0.0 kbyte/s)
> ==========================================================================
> Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
> Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
> ==========================================================================
> ==========================================================================
> Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
> AUDIO: 44100 Hz, 2 ch, s16le, 128.0 kbit/9.07% (ratio: 16000->176400)
> Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
> ==========================================================================
> AO: [oss] 44100Hz 2ch s16le (2 bytes per sample)
> Starting playback...
> VDec: vo config request - 1024 x 768 (preferred colorspace: Planar YV12)
> VDec: using Planar YV12 as output csp (no 0)
> Movie-Aspect is undefined - no prescaling applied.
> VO: [xv] 1024x768 => 1024x768 Planar YV12
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