YouTube 'video' to mp3?

Is there any pre established route to take an online youtube video, and extract the audio and convert it (Or
save it if it is already in the mp3 format) to an mp3 file?

Atm we're looking at writing some code to download the swf, using gameswf to decode it, then ffmpeg to encode
the raw audio into an mp3. But that feels very fragile.

Thanks.

Re: YouTube 'video' to mp3?

----- Original Message ----- 
From: "Stefan de Konink" <skinkie <at> xs4all.nl>
To: "FFmpeg user questions and RTFMs" <ffmpeg-user <at> mplayerhq.hu>
Sent: Tuesday, July 31, 2007 11:22 AM
Subject: Re: [Ffmpeg-user] YouTube 'video' to mp3?

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA512
>
> Antony Wells schreef:
>> Is there any pre established route to take an online youtube video, and 
>> extract the audio and convert it (Or save it if it is already in the mp3 
>> format) to an mp3 file?
>>
>> Atm we're looking at writing some code to download the swf, using gameswf 
>> to decode it, then ffmpeg to encode the raw audio into an mp3. But that 
>> feels very fragile.
>
> There is a 'youtube' downloader in python. That fetches the flv file.
> - From flv -> mp3 seems easy with -acodec copy :)
>
>
> Stefan
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v2.0.5 (GNU/Linux)
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
>
> iD8DBQFGr336YH1+F2Rqwn0RCuv6AJwJN1zj6CR/1f2N0Pp7ptyz8/hu1QCbB2Nv
> lHQBDQ3fpIOq4O7q2JVHR4Q=

how do I get better FLV quality?

/ok i think i figured out the problem, in my flash player I am slightly enlarging the video from 320X240  to
400X300  .   this seems to be making it 
look very choppy / pixelated.  if i reduce the video player resolution back to 320X240 or even increase it to
640X480, it looks a lot better.   
maybe I am not enlarging the video properly?  i know that youtube and myspace and all the other guys are
enlarging their videos to slightly larger
than 320X240 and their quality doesnt seem to suffer as much as I am experiencing.  it really is very
noticeable.   basically all I am doing is 
in flash I have a video object and I have the default parameters set to 400 X 300.   but somehow this is
drastically reducing the video quality when played.

///
//
>/ >
/>/ > i've tried all kinds of different options, tried CBR, VBR, tried  
/>/ > messing with qmin and qmax, qblur, etc.   but no matter what I  
/>/ > can't get the quality better than what you see in that link.  any  
/>/ > help would be most appreciated.
/>/ This command line produces the following file which can be found here:
/>/ http://vampirefreaks.com/playvideo/?v=13823
/>/
/>/ the youtube encoded version of the same input file is at
/>/ http://www.youtube.com/watch?v=YYTEpZfPQyc
/
>/ >
/>/ > -Jethro
/>/ >
/
>Likewise, I used:

real dvd support in ffmpeg?

hello,

from what i've read in the archive, when processing dvd's most people just use
.vob files in VIDEO_TS directory. but each .vob file is not a complete movie so
it's been suggested that the .vob files should be cat'ed together first. is
this the proper way to handle dvd's in ffmpeg? there're comments that some
infos, eg. language name & index, are not stored in the .vob files. so, is
there a better way to transcode/rip dvd's other than processing the .vob files
directly. in mplayer, there's a dvd:// option specifically.

another related question is, can ffmpeg work with dvd image stored in a file,
eg. .iso, .ngr, .mds? 

i've read from an old post that for this to work, a new URLprotocol might need
to be implemented. has this been done already? i think mplayer is using
libdvdread for accessing dvd's. would it also work with ffmpeg?

thanks a lot for your help, :)
tuit

       
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Re: real dvd support in ffmpeg?

tuitfun wrote:

>hello,
>
>from what i've read in the archive, when processing dvd's most people just use
>.vob files in VIDEO_TS directory. but each .vob file is not a complete movie so
>it's been suggested that the .vob files should be cat'ed together first.
>
that method doesn't work with multi-angle dvds

> is
>this the proper way to handle dvd's in ffmpeg? there're comments that some
>infos, eg. language name & index, are not stored in the .vob files. so, is
>there a better way to transcode/rip dvd's other than processing the .vob files
>directly. in mplayer, there's a dvd:// option specifically.
>
>another related question is, can ffmpeg work with dvd image stored in a file,
>eg. .iso, .ngr, .mds? 
>
>i've read from an old post that for this to work, a new URLprotocol might need
>to be implemented. has this been done already? i think mplayer is using
>libdvdread for accessing dvd's. would it also work with ffmpeg?
>
>thanks a lot for your help, :)
>tuit
>
>
>  
>
dvdread is a very ugly library, and ffmpeg doesn't need one more wrapper;

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Re: real dvd support in ffmpeg?

On Wed, 01 Aug 2007 11:11:14 +0200, Nico Sabbi <nsabbi <at> email.it> wrote:

> dvdread is a very ugly library,

What alternatives are there? There is, actually, one DVD in my collection
that libdvdread is unable to read correctly ("The Day of the Jackal" R2).
It's a problem that's mentioned in several places on the 'Net.

--

-- 
G. Stewart - gstewart <at> lamproie.eu

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Re: real dvd support in ffmpeg?

Godwin Stewart wrote:

>On Wed, 01 Aug 2007 11:11:14 +0200, Nico Sabbi <nsabbi <at> email.it> wrote:
>
>  
>
>>dvdread is a very ugly library,
>>    
>>
>
>What alternatives are there? 
>
none

>There is, actually, one DVD in my collection
>that libdvdread is unable to read correctly ("The Day of the Jackal" R2).
>It's a problem that's mentioned in several places on the 'Net.
>  
>
what version of dvdread doesn't work?
did you try with dvdnav?

Re: YouTube 'video' to mp3?

----- Original Message ----- 
From: "Stefano Sabatini" <stefano.sabatini-lala <at> poste.it>
To: <ffmpeg-user <at> mplayerhq.hu>
Sent: Tuesday, July 31, 2007 12:46 PM
Subject: Re: [Ffmpeg-user] YouTube 'video' to mp3?

> On date Tuesday 2007-07-31 16:31:21 -0700, Antony Wells encoded:
>
>> Is there any pre established route to take an online youtube video,
>> and extract the audio and convert it (Or save it if it is already in
>> the mp3 format) to an mp3 file?
>>
>> Atm we're looking at writing some code to download the swf, using
>> gameswf to decode it, then ffmpeg to encode the raw audio into an
>> mp3. But that feels very fragile.
>
> Not that complicate.
>
> Look at this:
> http://www.netscape.com/viewstory/2006/08/15/bash-script-to-download-youtube-videos-as-mpeg/
>
> You have to simply grep the youtube page for something like:
> ... 
> "player2.swf??hl=CODE_LANGUAGE&BASE_YT_URL=REALLY_LONG_AND_FEARSOME_VIDEO_ID_STRING" 
> ...
>
> extract the video id string, then add to it a prefix like this:
> "http://youtube.com/get_video.php?REALLY_LONG_AND_FEARSOME_VIDEO_ID_STRING"
>
> and you get the url of the resource to download, which is a FLV file.

After MOV bitrate conversion - sprite is missing

Hi all,

I would like to kindly ask,  I tried to MOV video bitrate conversion
using "ffmpeg.exe -i Leaked2_1_mp4_sprited.mov -b 615k l.mov".
But after conversion sprite which launched URL in browser is missing.

Is it possible to make MOV bitrate conversion without ffmpeg to remove
sprite?

Thanks for answer,

Pavel