>> $ cat result3.yuv | mpeg2enc -v -o result3.m1v
>> **ERROR: [mpeg2enc] Could not read YUV4MPEG2 header: bad header magic!
>Have you tried running that in gdb, so you can find out where is really
>crashes.
>
>But I guess that the problem is not really in mpeg2enc.
The "-v" to mpeg2enc req
>> Next thing to try is dump the mplayer -vo yuv4mpeg output to
>> a file (not all of it of course - just the first 20 frames or
>> so) and find the 15 or 16th 'FRAME' word. That's not too hard
>> because the frame size is known (720x576*3/2).
>
>I did that, and can't see a
On Mon, 3 Nov 2003, Laurent Pinchart wrote:
> How do I check if the input is progressive or interlaced ? still images in
If it's from a DVD it is interlaced. The DVD specs do not allow
progressive streams.
The frame dominance is _usually_ (but not always) top field
> If you really do have a progressive stream it's valid. Otherwise
> the interlace tag 'Ip' is wrong. It should be either It (top
> field first) or 'Ib' (bottom field first). Most DVDs that I
> have looked at are 'It' while DV (from a analog->DV capture) is
> alway
On Sun, 2 Nov 2003, Laurent Pinchart wrote:
> > tccat | mplayer -vo yuv4mpeg | head -1
>
> YUV4MPEG2 W720 H576 F2500:100 Ip A0:0
>
> Is that valid ? Note that I don't get the error on the first frame, but on
> frame 15:
If you really do have a progressive stream it's valid
On Sunday 02 November 2003 18:57, Laurent Pinchart wrote:
> > IIRC, you can make MPlayer read directly from a DVD image using the
> > "-dvd-device /path/to/image" option.
> Are you sure that the -dvd-device option can be used to read from a DVD
> dump ? From the man page it seems that it is used to
Hi,
Could anyone tell me how yuvscaler handles interlaced material ? Does it
deinterlace it before applying the scaling ? If so, is there a way to turn
that off for progressive input ? And if not, doesn't it have an impact on
quality ?
Laurent Pinchart
--
Hi everybody,
This is not the first mail about MPEG2 encoding performance, and probably not
the last one either.
I'm comparing here the encoding performances of ffmpeg (MPEG4) and mpeg2enc.
On a PIII-800, the former encodes in real time while the later encodes at
around 3fps.
I might be wrong
Hi again,
As yuvscaler gives me errors when I use MPlayer to decode the stream (I
checked the output of MPlayer and I don't detect any problem. All frames have
the right size - w*h*1.5 - and start by FRAME\n), I tried using transcode
only to decode the input.
I tried the following, which seems
> Some days ago I forgot to copy the .ifo, but those days transcode
> (about 0.6.3 or 4) had no Problem with dirs. You have to make sure
> that only the vobs are in the dir IIRC.
Yes, that's what I found out too. Transcode can handle vob input if you
specify -x vob,null. I was trying with -x mpeg
Hi,
0n 03/11/[EMAIL PROTECTED]:17 Laurent Pinchart told me:
> This, however, becomes a bit more complicated as the material I'm trying to
> convert is a DVD dump. I can read it using tccat | mplayer, but transcode
> doesn't accept directories as input.
Some days ago I forgot to copy the .ifo,
> tccat | mplayer -vo yuv4mpeg | head -1
YUV4MPEG2 W720 H576 F2500:100 Ip A0:0
Is that valid ? Note that I don't get the error on the first frame, but on
frame 15:
INFO: [yuvscaler] yuvscaler 1.6.1.90 (10-02-2003) is a general scaling
utility for yuv frames
INFO: [yuvscaler
On Sun, 2 Nov 2003, Laurent Pinchart wrote:
> > mplayer dvd://TITLESET [-chapter X-Y] -dumpstream
>
> I can't do that, as I don't have the original DVD anymore. All I have is the
> dump on my harddisc.
Oh. Ok - but now you know another approach for the next time ;)
> PS: I
> IIRC, you can make MPlayer read directly from a DVD image using the
> "-dvd-device /path/to/image" option.
To make things even easier, I only have a partial dump (the main title), so
there's no VIDEO_TS.IFO file (there's a VTS_03_0.IFO though), and MPlayer
complains about not being able to ope
Hi,
On Sunday 02 November 2003 17:17, Laurent Pinchart wrote:
> What is the best way to convert the DVD dump ? I can use tccat | mplayer |
> yuvscaler | mpeg2enc, but using programs from 3 different projects
> (transcode, mplayer and mjpegtools) seems a bit complicated to do the
> simple operation
> > What is the best way to convert the DVD dump ? I can use tccat | mplayer
> > | yuvscaler | mpeg2enc, but using programs from 3 different projects
> > (transcode, mplayer and mjpegtools) seems a bit complicated to do the
> > simple operation I'm trying to achieve.
> >
> > Any help will be greatl
On Sun, 2 Nov 2003, Laurent Pinchart wrote:
> I'm trying to transcode a DVD to SVCD. The usual approach is, I think, to use
> mplayer or transcode to read from the DVD and output to a named pipe, and cat
> the pipe to yuvscaler and mpeg2enc.
Actually, for me, the usual approach is to u
Hi everybody,
I'm trying to transcode a DVD to SVCD. The usual approach is, I think, to use
mplayer or transcode to read from the DVD and output to a named pipe, and cat
the pipe to yuvscaler and mpeg2enc.
This, however, becomes a bit more complicated as the material I'm trying to
convert is a
Op zo 02-11-2003, om 12:00 schreef Ronald Bultje:
> v4l2 support, videodev2 support, i2c-new support, automatic error
> correction on timeouts (or well, it should be there; apparently, this
> doesn't work for you), etc. And I'm now the official maintainer instead
> of Serguei.
>
> Could you try on
On Sun, 2003-11-02 at 10:31, Bernhard Praschinger wrote:
> And nobody has yet changed the driver in the CVS. I did not change it
> because I do not know what I would else break with that change. And I
> forgot to inform Ronald about that change.
I've fixed that several weeks ago. :).
Ronald
--
Hi Bert,
On Sun, 2003-11-02 at 10:14, Bert van Oort wrote:
> > 2.6.0-test5 is the first to contain the new driver...
> What is new about it?
v4l2 support, videodev2 support, i2c-new support, automatic error
correction on timeouts (or well, it should be there; apparently, this
doesn't work for you
Hallo
> Bernhard, below are the commands you suggested with the results. It
> appears that mpeg2enc is failing. The problem may be with the yuv file,
> but yuvplay does not appear to have any problem handling it. Please keep
> the suggestions coming.
I'm not soure where the problem really is.
Ha
Hallo
> > I just forgot to mention, in the test8 kernel I had to change in
> > zoran_driver.c
> > the line 1267 from:
> > unsigned int minor = minor(inode->i_rdev);
> > to this:
> > unsigned int minor = iminor(inode);
> This change is already in test9. I assume you also use the driver in the
> ker
Op zo 02-11-2003, om 06:30 schreef Bernhard Praschinger:
> I just forgot to mention, in the test8 kernel I had to change in
> zoran_driver.c
> the line 1267 from:
> unsigned int minor = minor(inode->i_rdev);
> to this:
> unsigned int minor = iminor(inode);
>
This change is already in test9. I as
Op za 01-11-2003, om 23:42 schreef Ronald Bultje:
> Hi Bert,
>
> On Sat, 2003-11-01 at 14:24, Bert van Oort wrote:
> > Since the latest 2.6 test kernels (test5..test9) I cannot record with
> > lavrec anymore, while it used to work with 2.6.0-test4. The error
> > message I get is:
>
> 2.6.0-test5
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