headers
Nathan Coulson | 1 Sep 2011 07:48
Picon

Re: wayland on LFS

On Wed, Aug 31, 2011 at 10:40 PM, George <gstoyanoff <at> gmail.com> wrote:
> ----- Original message -----
>> On Wed, Aug 31, 2011 at 10:14 PM, George <gstoyanoff <at> gmail.com> wrote:
>> > ----- Original message -----
>> > > On Mon, Aug 29, 2011 at 11:39 AM, Nathan Coulson <conathan <at> gmail.com>
>> > > wrote:
>> > > > On Mon, Aug 29, 2011 at 9:42 AM, George <gstoyanoff <at> gmail.com>
>> > > > wrote:
>> > > > > Wayland is lighter replacement of X for all I know, that's why I
>> > > > > found it interesting and thought building it LFS would be nice,
>> > > > > so I think what you are trying to do is of interest to at least
>> > > > > one other person :). My only concern was that it was not very
>> > > > > stable and I was not sure what display manager to use etc..
>> > > >
>> > > > well, to make some random guesses,  I imagine it will be unstable &
>> > > > unusable.
>> > > >
>> > > > At best, I would run Xorg on top of wayland, and have the
>> > > > functionality I have now (or most of it)
>> > > >
>> > > > This is for science though :)  like the time I installed KDE 4 on
>> > > > my GMA x3000 board about 2-3 months after the worst state they
>> > > > were ever in.  [was unstable, and crashed within 5-10 minutes].
>> > > >  Not sure if the problem was KDE (not known for stability at that
>> > > > time 4.0 or 4.1, not sure which),  or the git versions of xorg
>> > > > server/mesa/kernel/some other packages.
>> > > >
>> > > > In the end, decided I liked fluxbox (and now openbox) better then
>> > > > KDE, but it was fun :)
>> > >
(Continue reading)

Permalink | Reply | 0 comments |
headers
Nathan Coulson | 5 Sep 2011 21:06
Picon

can gcc link to earlier glibc's?

I am experimenting with compiler toolchains that can target ubuntu,
which worked great on my last LFS build,  but now result in the
following error

/lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.14' not found

I imagine that's because ubuntu 11.04 uses GLIBC 2.13.

I was hoping to avoid building a cross compiler, although that's
mostly because I don't know what kind of naming scheme I could use,
would x86_64-ubuntu1104-linux-gnu be valid?

Found an option called sysroot that sounds perfect, but it tells me
the following

gcc --sysroot=/usr test.c -o test gives me
ld: this linker was not configured to use sysroots

if anyone has any solutions, thank you

-- 
Nathan Coulson (conathan)
------
Location: British Columbia, Canada
Timezone: PST (-8)
Webpage: http://www.nathancoulson.com
--

-- 
http://linuxfromscratch.org/mailman/listinfo/lfs-chat
FAQ: http://www.linuxfromscratch.org/faq/
Unsubscribe: See the above information page
(Continue reading)

Permalink | Reply | 0 comments |
headers
linhao21cn | 6 Sep 2011 05:32
Picon
Favicon

Re: Hello

hi hi
 
linhao21cn
 
From: Yos Kar
Date: 2011-04-08 22:55
Subject: Hello
.hmmessage P { PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; PADDING-TOP: 0px } BODY.hmmessage { FONT-FAMILY: Tahoma; FONT-SIZE: 10pt } Hello
--

-- 
http://linuxfromscratch.org/mailman/listinfo/lfs-chat
FAQ: http://www.linuxfromscratch.org/faq/
Unsubscribe: See the above information page
Permalink | Reply | 2 comments |
headers
adrian | 6 Sep 2011 06:50

Re: Hello

 On Tue, 6 Sep 2011 11:32:38 +0800, linhao21cn wrote:
> hi hi
>
> -------------------------
>
> linhao21cn
>
>  2011-04-08 22:55
>
>  Hello
>
>  Hello
 Hello.

 A.
--

-- 
http://linuxfromscratch.org/mailman/listinfo/lfs-chat
FAQ: http://www.linuxfromscratch.org/faq/
Unsubscribe: See the above information page
Permalink | Reply | 1 comment |
headers
Ken Moffat | 7 Sep 2011 02:16

quicktime .mov files and youtube

 I've now got a few short movie clips (trains) which might have some
interest for people who use youtube - not great quality, but maybe
adequate [ 1280x720, from a panasonic 'bridge' camera ].  But, the
camera outputs .mov files (quicktime) - I can play these large files
in xine, but slowly (i.e. the clock runs slow, perhaps a 50/60 Hz
[ or 25/30 fps ] issue - I'm in the UK) and any sound dies very
quickly, within a second or so.  Totem is unable to play these source
files.  Any suggestions for playing the original files correctly ?

 If I use ffmpeg to convert these to .avi files, I can hear and see
them in both xine and totem and they seem to run at the correct
speed.  So, looks like I need to convert them.  Creating .avi
files from ffmpeg's default settings loses a lot of video quality,
and some audio quality - it wasn't wonderful to start with.  Has
anyone any experience with creating .avi files for youtube, with
recommended settings ?  I've tried this when I got the camera, and
have some ideas, but .avi seems to have a lot of restrictions on
what is valid for the audio, and knowing what people have found
useful for the video settings would be helpful.  Part of the problem
is that the recent youtube documentation implies I should use the
highest quality possible, i.e. the .mov file which I can't play
correctly.  I'm confused.

 I'm hoping to only need to use ffmpeg for this - the last thing I
need is more software to add to my builds.

 Sorry to ask this here, but it's the first time I've taken movies,
and I'm obsessional enough that if I subscribe to a movies list I'll
never have enough time to build a new LFS system :-)

Thanks.

ĸen
-- 
das eine Mal als Tragödie, das andere Mal als Farce
--

-- 
http://linuxfromscratch.org/mailman/listinfo/lfs-chat
FAQ: http://www.linuxfromscratch.org/faq/
Unsubscribe: See the above information page
Permalink | Reply | 5 comments |
headers
Tony Sauri | 7 Sep 2011 03:18
Picon

Re: quicktime .mov files and youtube

On Wed, 07 Sep 2011 12:16, Ken Moffat wrote:
>  I've now got a few short movie clips (trains) which might have some
> interest for people who use youtube - not great quality, but maybe
> adequate [ 1280x720, from a panasonic 'bridge' camera ].  But, the
> camera outputs .mov files (quicktime) - I can play these large files
> in xine, but slowly (i.e. the clock runs slow, perhaps a 50/60 Hz
> [ or 25/30 fps ] issue - I'm in the UK) and any sound dies very
> quickly, within a second or so.  Totem is unable to play these source
> files.  Any suggestions for playing the original files correctly ?
>
>  If I use ffmpeg to convert these to .avi files, I can hear and see
> them in both xine and totem and they seem to run at the correct
> speed.  So, looks like I need to convert them.  Creating .avi
> files from ffmpeg's default settings loses a lot of video quality,
> and some audio quality - it wasn't wonderful to start with.  Has
> anyone any experience with creating .avi files for youtube, with
> recommended settings ?  I've tried this when I got the camera, and
> have some ideas, but .avi seems to have a lot of restrictions on
> what is valid for the audio, and knowing what people have found
> useful for the video settings would be helpful.  Part of the problem
> is that the recent youtube documentation implies I should use the
> highest quality possible, i.e. the .mov file which I can't play
> correctly.  I'm confused.
>
>  I'm hoping to only need to use ffmpeg for this - the last thing I
> need is more software to add to my builds.
>
>  Sorry to ask this here, but it's the first time I've taken movies,
> and I'm obsessional enough that if I subscribe to a movies list I'll
> never have enough time to build a new LFS system :-)
>
> Thanks.
>
> ĸen
> --
> das eine Mal als Tragödie, das andere Mal als Farce

Did you try to play them using  ffmpeg's player ffplay?

If you just want to copy yhe original audio and video stream to an avi 
container this ffmpeg command should do it:

ffmpeg -i <inpit .mov file>  -acodec copy -vcodec copy -f  <output ,avi file>

Tony

 
--

-- 
http://linuxfromscratch.org/mailman/listinfo/lfs-chat
FAQ: http://www.linuxfromscratch.org/faq/
Unsubscribe: See the above information page
Permalink | Reply | 1 comment |
headers
littlebat | 7 Sep 2011 05:32
Picon

Re: quicktime .mov files and youtube

On Wed, 7 Sep 2011 01:16:47 +0100
Ken Moffat <zarniwhoop <at> ntlworld.com> wrote:

>  I've now got a few short movie clips (trains) which might have some
> interest for people who use youtube - not great quality, but maybe
> adequate [ 1280x720, from a panasonic 'bridge' camera ].  But, the
> camera outputs .mov files (quicktime) - I can play these large files
> in xine, but slowly (i.e. the clock runs slow, perhaps a 50/60 Hz
> [ or 25/30 fps ] issue - I'm in the UK) and any sound dies very
> quickly, within a second or so.  Totem is unable to play these source
> files.  Any suggestions for playing the original files correctly ?
> 
>  If I use ffmpeg to convert these to .avi files, I can hear and see
> them in both xine and totem and they seem to run at the correct
> speed.  So, looks like I need to convert them.  Creating .avi
> files from ffmpeg's default settings loses a lot of video quality,
> and some audio quality - it wasn't wonderful to start with.  Has
> anyone any experience with creating .avi files for youtube, with
> recommended settings ?  I've tried this when I got the camera, and
> have some ideas, but .avi seems to have a lot of restrictions on
> what is valid for the audio, and knowing what people have found
> useful for the video settings would be helpful.  Part of the problem
> is that the recent youtube documentation implies I should use the
> highest quality possible, i.e. the .mov file which I can't play
> correctly.  I'm confused.
> 
>  I'm hoping to only need to use ffmpeg for this - the last thing I
> need is more software to add to my builds.
> 
>  Sorry to ask this here, but it's the first time I've taken movies,
> and I'm obsessional enough that if I subscribe to a movies list I'll
> never have enough time to build a new LFS system :-)

I haven't converted video for youtube, but can give you some clues:

1, download a video from youtube and check its media information with
"ffmpeg -i filename", get its video codec and audio codec, fps,
resolution, etc... Maybe, youtube website has the suggestion.

2, then, convert your video with the parameters above. If your want the
close quality as original video, try: 
ffmpeg -i originalfile -sameq resultfile.avi
--

-- 
http://linuxfromscratch.org/mailman/listinfo/lfs-chat
FAQ: http://www.linuxfromscratch.org/faq/
Unsubscribe: See the above information page
Permalink | Reply | 2 comments |
headers
Ken Moffat | 7 Sep 2011 16:50

Re: quicktime .mov files and youtube

On Wed, Sep 07, 2011 at 01:18:43PM +1200, Tony Sauri wrote:
> 
> Did you try to play them using  ffmpeg's player ffplay?
> 
 No, I'd forgotten about this tool.  Many thanks, it plays them
nicely and turns out to be a key part of comparing the outputs with
various options to reduce the bitrate.
> If you just want to copy yhe original audio and video stream to an avi 
> container this ffmpeg command should do it:
> 
> ffmpeg -i <inpit .mov file>  -acodec copy -vcodec copy -f  <output ,avi file>
> 
> Tony
> 
>  
 Thanks, I've copied them to .avi for initial review using ffmpeg's
defaults (so, *much* smaller files, which helps enormously in
backing everything up when I'm away from home).

ĸen
-- 
das eine Mal als Tragödie, das andere Mal als Farce
--

-- 
http://linuxfromscratch.org/mailman/listinfo/lfs-chat
FAQ: http://www.linuxfromscratch.org/faq/
Unsubscribe: See the above information page
Permalink | Reply | 0 comments |
headers
Ken Moffat | 7 Sep 2011 17:27

Re: quicktime .mov files and youtube

On Wed, Sep 07, 2011 at 11:32:19AM +0800, littlebat wrote:
> 
> I haven't converted video for youtube, but can give you some clues:
> 
> 1, download a video from youtube and check its media information with
> "ffmpeg -i filename", get its video codec and audio codec, fps,
> resolution, etc... Maybe, youtube website has the suggestion.
> 
 Thanks, I'd not thought of this!  Got too hung-up on the "maintain
the quality" suggestions on the recent youtube pages (supposedly,
everything gets recoded for html5).  Some things I've downloaded
(with the youtube_dl Python prog/script) show all sorts of different
codecs, but the video bitrates are typically 3000k or less, and audio
never exceeds 125k bits.  My original .mov files are typically
31000k video and 512k audio (but only 16KHz sampling frequency).

 What I'm doing now is to use ffmpeg to convert .mov to .mp4 with
lower bitrates.  When ffmpeg is told to produce .mov or .mp4 it
converts the input mjpeg with mp3 to mpeg and aac.  Both xine and
totem play these output files correctly.  Maybe I'll even do this in
future for initial review, the outputs are more sensible sizes.

 Still experimenting with bitrates : -b 3000k -ab 64k is as good as
I need [ 3000k+ video bits, nominal 64k audio bits ] but I'm still
playing with the numbers.  Will need to upload an example at what I
think is a good compromise size (my upload is *slow*), then see what
results.

> 2, then, convert your video with the parameters above. If your want the
> close quality as original video, try: 
> ffmpeg -i originalfile -sameq resultfile.avi

 Actually, I did try -sameq when I got the camera, but it wasn't
useful : ISTR the quality was very degraded on the version of ffmpeg
I'm using.

 Cheers.

ĸen
-- 
das eine Mal als Tragödie, das andere Mal als Farce
--

-- 
http://linuxfromscratch.org/mailman/listinfo/lfs-chat
FAQ: http://www.linuxfromscratch.org/faq/
Unsubscribe: See the above information page
Permalink | Reply | 1 comment |
headers
mikko yue | 8 Sep 2011 09:03
Picon

Re: Hello

what？

2011/9/6 <adrian <at> leofcwen.com>
 On Tue, 6 Sep 2011 11:32:38 +0800, linhao21cn wrote:
> hi hi
>
> -------------------------
>
> linhao21cn
>
>  2011-04-08 22:55
>
>  Hello
>
>  Hello
 Hello.

 A.
--
http://linuxfromscratch.org/mailman/listinfo/lfs-chat
FAQ: http://www.linuxfromscratch.org/faq/
Unsubscribe: See the above information page

--

-- 
http://linuxfromscratch.org/mailman/listinfo/lfs-chat
FAQ: http://www.linuxfromscratch.org/faq/
Unsubscribe: See the above information page
Permalink | Reply | 0 comments |

Gmane