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Marc Anton Mueller | 1 Mar 10:39
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Mplayer ready for quad-core-CPU?

Hi,

If I buy one of the new quad-core-systems, is Mplayer ready for it?

There is some x.264 encoded stuff (720p 60 FPS or 1080i 30fps w/ software deinterlacer necessary) where my
P4 3,4 GHz is muuch too slow.

Regards,
Marc

       
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Evgeniy Stepanov | 2 Mar 02:12
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unaligned memory read with mplayer's mcdeint filter

Hi,

it turns out, for quite some time mplayer has been crashing with a segfault if 
run with -vf mcdeint=2. There is a message in mplayer-user regarding this.

The reason is unaligned memory access in sad16_sse2 function, the first psadbw 
instruction. It seems that sad16_sse2 expects 16 bytes aligned blk1 and blk2. 
At the same time, get_block_rd() from snow.c calls it with only 4 bytes 
aligned data when block_w==8.

$ gcc -v
Using built-in specs.
Target: i486-linux-gnu
Configured 
with: ../src/configure -v --enable-languages=c,c++,fortran,objc,obj-c++,treelang --prefix=/usr
--enable-shared --with-system-zlib --libexecdir=/usr/lib --without-included-gettext
--enable-threads=posix --enable-nls --with-gxx-include-dir=/usr/include/c++/4.2
--program-suffix=-4.2 --enable-clocale=gnu --enable-libstdcxx-debug --enable-mpfr
--enable-targets=all --enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu --target=i486-linux-gnu
Thread model: posix
gcc version 4.2.3 20071023 (prerelease) (Ubuntu 4.2.2-3ubuntu3)

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1230223152 (LWP 23204)]
0x085180a9 in sad16_sse2 (v=0xb57843c0, blk2=0xb530bfac '\200' <repeats 200 
times>...,
    blk1=0x8df6a8c '\200' <repeats 200 times>..., stride=672, h=16) at 
i386/motion_est_mmx.c:94
94          asm volatile(
(gdb) bt
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Mikuláš Krupička | 2 Mar 10:10
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Is possible to play video backward?

Hi,

I'm developing my own video player with ffmpeg and would like to implement an function to play video
backwards (only video, audio is not necessary). Is it possible? And if yes, how?
I've try to write something like frame buffer... seek back, preload a few frames, invert order of frames,
play them, seek back againd and so on... but that doesn't work for me.

Thanks. Miki.
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bcjenkins | 2 Mar 12:08
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Re: encoding to WMV9


James Strickland wrote:
> 
> Greetings all,
> 
> Is it possible to encode to WMV9 format?  If so, how would I go about 
> doing it.  Can't seem to find anything in the documentation.
> 
> PURPOSE:  to (re)encode video for play on my zune.  without having to be 
> re-encoded by the Zune Software.
> 
You don't need WMV9. This string seems to be working for mpeg2 files to wmv
and they go straight on the Zune.

ffmpeg -i tv.mpg -deinterlace -pix_fmt yuv420p -g 15 -qmin 3 -maxrate 628000
-bufsize 628k -async 50 -vcodec wmv2 -b 500000 -r 29.97 -s 320x240 -ar 4x3
-acodec wmav2 -ar 44100 -ac 2 -ab 128k tv.wmv

B
--

-- 
View this message in context: http://www.nabble.com/encoding-to-WMV9-tp15731849p15767321.html
Sent from the FFmpeg-users mailing list archive at Nabble.com.
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Nizan Horsefield | 2 Mar 12:26
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amr help needed!!!

Hi all

I have tried everything listed in the posts and found using google

 - downloading am wb and nb packages from 3gp
 - creating libamr directories in he ffmpeg source folder, /usr/local/lib
 - running ldconfig

I just can't get ./configure to see the libamr packages when I run boh
--enable-libamr-nb --enable-libamr-wb

I've checked the configure file and it shows
enabled libamr_nb  && require  libamrnb amrnb/interf_dec.h
Speech_Decode_Frame_init -lamrnb -lm
enabled libamr_wb  && require  libamrwb amrwb/dec_if.h D_IF_init -lamrwb -lm

so i created amrwb and amrnb directories

I always get the following error:

END /tmp/ffmpeg-conf-1342-6256-29627.c
gcc -fomit-frame-pointer -E -o /tmp/ffmpeg-conf-16530-6256-19746.o
/tmp/ffmpeg-conf-1342-6256-29627.c
/tmp/ffmpeg-conf-1342-6256-29627.c:1:30: error: amrnb/interf_dec.h: No
such file or directory
ERROR: libamrnb not found

Any help please as I do need to get audio as well as AV when convering
.3gp to .flv
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The Wanderer | 2 Mar 14:02
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Re: amr help needed!!!

Nizan Horsefield wrote:

> Hi all
> 
> I have tried everything listed in the posts and found using google
> 
>  - downloading am wb and nb packages from 3gp
>  - creating libamr directories in he ffmpeg source folder, /usr/local/lib
>  - running ldconfig
> 
> I just can't get ./configure to see the libamr packages when I run boh
> --enable-libamr-nb --enable-libamr-wb
> 
> I've checked the configure file and it shows
> enabled libamr_nb  && require  libamrnb amrnb/interf_dec.h
> Speech_Decode_Frame_init -lamrnb -lm
> enabled libamr_wb  && require  libamrwb amrwb/dec_if.h D_IF_init -lamrwb -lm
> 
> so i created amrwb and amrnb directories

Where did you create them? They need to be in the include search path
somewhere. The standard place, since (I infer) you are installing these
yourself rather than via your distribution, is /usr/local/include/;
obviously enough, the matching header files also need to be in those
directories.

--

-- 
    The Wanderer

    My usual .sig is on vacation while I adjust to my new computer
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Nizan Horsefield | 2 Mar 16:51
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Re: amr help needed!!!

Hi Mr Wanderer

Thanks for your reply.

I simply created directories in the /usr/local/lib and haven't put any
header files anywhere. Should ffmpeg compile the required components
for AMRWB and AMRNB by default? Or am I right in what I am doing by
creating the directories?

Cheers
Niz

On 02/03/2008, The Wanderer <inverseparadox <at> comcast.net> wrote:
> Nizan Horsefield wrote:
>
> > Hi all
> >
> > I have tried everything listed in the posts and found using google
> >
> >  - downloading am wb and nb packages from 3gp
> >  - creating libamr directories in he ffmpeg source folder, /usr/local/lib
> >  - running ldconfig
> >
> > I just can't get ./configure to see the libamr packages when I run boh
> > --enable-libamr-nb --enable-libamr-wb
> >
> > I've checked the configure file and it shows
> > enabled libamr_nb  && require  libamrnb amrnb/interf_dec.h
> > Speech_Decode_Frame_init -lamrnb -lm
> > enabled libamr_wb  && require  libamrwb amrwb/dec_if.h D_IF_init -lamrwb -lm
(Continue reading)

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Nizan Horsefield | 2 Mar 17:53
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Re: amr help needed!!!

Hi

I currentl have an installation that coverts without sound, but
understand that .3gp is encoded with amr NB and WB.

I known that I need to add the switches --enable-libamr-nb
--enable-libamr-wb --enable-nonfree to ./configure and then run make
and make install again.

Does anyone have step by step guide on how to configure ffmpeg to
convert from .3gp to .flv with sound?

Or more specifically, how to compile ffmpeg with amr NB and WB support?

Thanks
Niz
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The Wanderer | 2 Mar 18:19
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Re: amr help needed!!!

Nizan Horsefield wrote:

> Hi Mr Wanderer
> 
> Thanks for your reply.

You're welcome. Please don't top-post.

> I simply created directories in the /usr/local/lib and haven't put
> any header files anywhere. Should ffmpeg compile the required
> components for AMRWB and AMRNB by default? Or am I right in what I am
> doing by creating the directories?

The header files are necessary for compiling programs which use the
libraries. If you don't have the header files, you won't be able to tell
the program what functions the libraries provide, so it won't be able to
compile anything which needs those functions.

Normally, you should not have to create library or include directories
by hand; it should be taken care of by whatever installs the library
package. I don't know what form the packages provided by '3gp' come in,
but they almost certainly have their own install method; if they are
RPMs or .debs, they obviously do, and if they are tarballs, then they
probably have a Makefile inside which understands 'make install'.

I would recommend that you a) see if there is an automatic installation
procedure in those packages (there probably is) and b) see if there are
separate '-dev' or '-devel' packages, which would include the headers.

--

--
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aliahsan naqvi | 2 Mar 18:56
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Re: amr help needed!!!

just install from the  source  amrnb and amrwb u dont have to copy any thing in the ffmpeg.and just compile it
with --libamrwb and nb check option.ane download a fresh source of ffmpeg if u have any problem mail me i
tell u all thing in detils.RegardsS.Ali NaqviTechnical Customer Support Engineer, Customer Support
Voda Phone,TelnoreEmail : anaqvi <at> pixsense.comPixSense, Inc.Cell: +92 (345) 8318769Pechs Block 2
Tariq Road Karachihttp://pixsense.com/
PixSense Click. Done.

> Date: Sun, 2 Mar 2008 16:53:55 +0000> From: nizan.horsefield <at> gmail.com> To:
ffmpeg-user <at> mplayerhq.hu> Subject: Re: [Ffmpeg-user] amr help needed!!!> > Hi> > I currentl have an
installation that coverts without sound, but> understand that .3gp is encoded with amr NB and WB.> > I
known that I need to add the switches --enable-libamr-nb> --enable-libamr-wb --enable-nonfree to
./configure and then run make> and make install again.> > Does anyone have step by step guide on how to
configure ffmpeg to> convert from .3gp to .flv with sound?> > Or more specifically, how to compile ffmpeg
with amr NB and WB support?> > Thanks> Niz> _______________________________________________>
ffmpeg-user mailing list> ffmpeg-user <at> mplayerhq.hu> https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user
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