Most NTSC DVD's start out at 30 fps and then switch to 24 fps
(and then often switch back and forth wildly after that).
Transcode doesn't detect these framerate changes (mencoder
DOES), that is the problem.
Robert Tigelaar wrote:
> Yes, transcode detects ntsc framerates wrong sometimes. I believe it is also
> mentioned in the framerate tooltip in the framerate selection menu of the
> transcode tab in dvd::rip, altough that program has little to do with it in
> this case. But it seems to be a known transcode problem indeed.
>
> On 8/24/07, Richi Plana <[EMAIL PROTECTED]> wrote:
> >
> > Hi,
> >
> > I'm working on a couple of NTSC DVDs, and even with the latest version
> > of transcode (ver. 1.0.3), I'm getting conflicting framerate readings
> > from tcprobe.
> >
> > When I run tcprobe on the DVD ("tcprobe -H 100 -i /dev/dvd"), I get the
> > following:
> >
> > [tcprobe] summary for /dev/dvd, (*) = not default, 0 = not detected
> > import frame size: -g 720x480 [720x576] (*)
> > aspect ratio: 16:9 (*)
> > frame rate: -f 23.976 [25.000] frc=1 (*)
> > audio track: -a 0 [0] -e 48000,16,2 [48000,16,2] -n 0x2000
> > [0x2000]
> > audio track: -a 1 [0] -e 48000,16,2 [48000,16,2] -n 0x2000
> > [0x2000]
> > audio track: -a 2 [0] -e 48000,16,2 [48000,16,2] -n 0x2000
> > [0x2000]
> >
> > Even after using tccat and running tcprobe on the mpegpes video, tcprobe
> > still reports a framerate of 23.976.
> >
> > However, when I use transcode, and pass it "-f 23.976,1" or even "-f
> > 24,1" or "-f 24,2", it is unable to convert the video. mplayer, on the
> > other hand, reports a framerate of 29.970 reading from both the DVD and
> > from the tccat'd MPEG file. mplayer output:
> >
> > MPEG-PS file format detected.
> > VIDEO: MPEG2 720x480 (aspect 3) 29.970 fps 7500.0 kbps (937.5
> > kbyte/s)
> > ==========================================================================
> > Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
> > VDec: vo config request - 720 x 480 (preferred colorspace: Mpeg PES)
> > Could not find matching colorspace - retrying with -vf scale...
> > Opening video filter: [scale]
> > The selected video_out device is incompatible with this codec.
> > Try appending the scale filter to your filter list,
> > e.g. -vf spp,scale instead of -vf spp.
> > 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))
> > ==========================================================================
> > ==========================================================================
> > Opening audio decoder: [liba52] AC3 decoding with liba52
> > Using SSE optimized IMDCT transform
> > Using MMX optimized resampler
> > AUDIO: 48000 Hz, 2 ch, s16le, 448.0 kbit/29.17% (ratio: 56000->192000)
> > Selected audio codec: [a52] afm: liba52 (AC3-liba52)
> > ==========================================================================
> >
> > when I use "-f 29.970" or "-f 29.970,4" with transcode, the input is
> > converted properly.
> >
> > Is this a bug in transcode? If so, what can I / we do to fix it?
> > --
> >
> > Richi
> >
> >
--
Phil Ehrens <[EMAIL PROTECTED]> | Fun stuff:
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