[Ffmpeg-user] ffmpeg [Unknown decoder 'libx264']

This is a real brain buster for me and my host can't seem to give any answers
on this (even though it is a managed host) - Here's the task at hand. I take
a stream provided with openRTSP delivered as an h264 and pipe it to ffmpeg.

However, when I specify the option -vcodec libx264 I receive the following
error:

[Unknown decoder 'libx264']

And yet, it has been compiled with libx264 support as I can see when it
starts up. The dump of ffmpeg is as follows:

FFserver version SVN-r15882, Copyright (c) 2000-2008 Fabrice Bellard, et al.
  configuration: --enable-libx264 --enable-gpl --enable-shared
  libavutil     49.12. 0 / 49.12. 0
  libavcodec    52. 3. 0 / 52. 3. 0
  libavformat   52.23. 1 / 52.23. 1
  libavdevice   52. 1. 0 / 52. 1. 0
  built on Dec 30 2008 11:36:06, gcc: 4.1.2 20071124 (Red Hat 4.1.2-42)
root <at> server1 [/home/shareinm/streaming]# FFmpeg version SVN-r15882,
Copyright (c) 2000-2008 Fabrice Bellard, et al.
  configuration: --enable-libx264 --enable-gpl --enable-shared
  libavutil     49.12. 0 / 49.12. 0
  libavcodec    52. 3. 0 / 52. 3. 0
  libavformat   52.23. 1 / 52.23. 1
  libavdevice   52. 1. 0 / 52. 1. 0
  built on Dec 30 2008 11:36:06, gcc: 4.1.2 20071124 (Red Hat 4.1.2-42)
Unknown decoder 'libx264'

Re: [Ffmpeg-user] ffmpeg [Unknown decoder 'libx264']

On Thu, Jan 1, 2009 at 2:06 PM, webkenny <webkenny <at> gmail.com> wrote:
>
> This is a real brain buster for me and my host can't seem to give any answers
> on this (even though it is a managed host) - Here's the task at hand. I take
> a stream provided with openRTSP delivered as an h264 and pipe it to ffmpeg.
>
> However, when I specify the option -vcodec libx264 I receive the following
> error:

libx264 isn't a decoder.

Dark Shikari

Re: [Ffmpeg-user] ffmpeg [Unknown decoder 'libx264']

Ok, so then what option should I be specifying for converting an h264 stream
to something ffserver can handle? Such as FLV which would be the ideal
option.

Jason Garrett-Glaser wrote:
> 
> On Thu, Jan 1, 2009 at 2:06 PM, webkenny <webkenny <at> gmail.com> wrote:
>>
>> This is a real brain buster for me and my host can't seem to give any
>> answers
>> on this (even though it is a managed host) - Here's the task at hand. I
>> take
>> a stream provided with openRTSP delivered as an h264 and pipe it to
>> ffmpeg.
>>
>> However, when I specify the option -vcodec libx264 I receive the
>> following
>> error:
> 
> libx264 isn't a decoder.
> 
> Dark Shikari
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user <at> mplayerhq.hu
> https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user
> 
> 

Re: [Ffmpeg-user] ffmpeg [Unknown decoder 'libx264']

On date Thursday 2009-01-01 13:02:39 -0800, webkenny encoded:

Don't top post.

> Ok, so then what option should I be specifying for converting an h264 stream
> to something ffserver can handle? Such as FLV which would be the ideal
> option.
> 
> 
> Jason Garrett-Glaser wrote:
> > 
> > On Thu, Jan 1, 2009 at 2:06 PM, webkenny <webkenny <at> gmail.com> wrote:
> >>
> >> This is a real brain buster for me and my host can't seem to give any
> >> answers
> >> on this (even though it is a managed host) - Here's the task at hand. I
> >> take
> >> a stream provided with openRTSP delivered as an h264 and pipe it to
> >> ffmpeg.
> >>
> >> However, when I specify the option -vcodec libx264 I receive the
> >> following
> >> error:
> > 
> > libx264 isn't a decoder.
[...]

And ffmpeg has its native H.264 decoder, read the output of ffmpeg
-formats for more info.

Re: [Ffmpeg-user] ffmpeg [Unknown decoder 'libx264']

I'm not even sure what top posting is. I just replied to the thread.
------Original Message------
From: Stefano Sabatini
Sender: 
To: ffmpeg-user <at> mplayerhq.hu
ReplyTo: FFmpeg user questions and RTFMs
Subject: Re: [FFmpeg-user] [Ffmpeg-user] ffmpeg [Unknown decoder 'libx264']
Sent: Jan 1, 2009 6:37 PM

On date Thursday 2009-01-01 13:02:39 -0800, webkenny encoded:

Don't top post.

> Ok, so then what option should I be specifying for converting an h264 stream
> to something ffserver can handle? Such as FLV which would be the ideal
> option.
> 
> 
> Jason Garrett-Glaser wrote:
> > 
> > On Thu, Jan 1, 2009 at 2:06 PM, webkenny <webkenny <at> gmail.com> wrote:
> >>
> >> This is a real brain buster for me and my host can't seem to give any
> >> answers
> >> on this (even though it is a managed host) - Here's the task at hand. I
> >> take
> >> a stream provided with openRTSP delivered as an h264 and pipe it to
> >> ffmpeg.
> >>
> >> However, when I specify the option -vcodec libx264 I receive the

Re: [Ffmpeg-user] ffmpeg [Unknown decoder 'libx264']

On Friday 02 January 2009 10:13:51 webkenny <at> gmail.com wrote:
> Re: [FFmpeg-user] [Ffmpeg-user] ffmpeg [Unknown decoder 'libx264']
>  From: webkenny <at> gmail.com
>  To: "FFmpeg user questions and RTFMs" <ffmpeg-user <at> mplayerhq.hu>
>
> I'm not even sure what top posting is. I just replied to the thread.

Top posting is posting your reply *above* the message to which you're 
replying, instead of underneath. This breaks the natural flow of the 
conversation. The convention on this (and most internet mailing lists) is to 
post replies below (or interspersed with) the question being answered.

Unfortunately a lot of MS or web-based mailers break this by default and make 
it much harder for new users.

Regards,
Rodney.
--

-- 
===================================================
Rodney Baker VK5ZTV
rodney.baker <at> iinet.net.au
=================================================== 

_______________________________________________
ffmpeg-user mailing list
ffmpeg-user <at> mplayerhq.hu
https://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user

"wav " audio file write up

Hello Everyone,

I have gone through the tutorials on ffmpeg . I just had one query i wanted
to  extract and write wav audio file  from video file. Is there any support
in ffmpeg APIs or shud I need to write in file myself.

I can do it by calling ffmpeg exe. But i am writing a code for it using
ffmpeg libs. Can anybuddy please help .

Waiting eagerly for your reply,

--

-- 
Regards,
Smita Wadhwa

Re: Not able to download the ffmpeg revision 15761

On Wed, Dec 31, 2008 at 11:01 PM, Srinivas G.
<srinivasg <at> esntechnologies.co.in> wrote:
>> Dear All,
>>
>>
>>
>> I am a beginner and trying to download the ffmpeg build revision
15761
>> from the following link.
>>
>> http://www.ffmpeg.org/
>>
>>
>>
>> I am not able to download the required revision of the ffmpeg
package.
>> Could anyone please explain me the procedure how to download the
ffmpeg
>> build revision 15761?
>>
>>
>>
>> Is it necessary to configure the SVN for downloading the ffmpeg?
>>
>>

> Yes, you need subversion to download FFMpeg at the revision you are
> asking. Once you have subversion installed in you system issue the
> command:

Unable to find a suitable output format- error

Hi,

I am new to ffmpeg, I installed the following packages using yum in my
centos5 box
When I used the following
#ffmpeg /video_check/pingandpong.asx -pass 2 -acodec libfaac -vcodec libx264
-b 384k -flags +loop -cmp +chroma -partitions +parti4x4+partp8x8+partb8x8
-flags2 +mixed_refs -subq 5 -trellis 1 -refs 3 -bf 3 -b_strategy 1 -coder 1
-me_range 16 -g 250 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -bt 384k
-rc_eq 'blurCplx^(1-qComp)' -qcomp 0.8 -qmin 10 -qmax 51 -qdiff 4
/video_check/check.flv

command I got an error unable find encoder libx264

I then compiled and installed the following packages

a52dec-0.7.4
faac
faad2
ffmpeg
gpac
lame-3.98b8
x264-snapshot-20081029-2245
yasm-0.7.0

and issued the same command

#ffmpeg /video_check/pingandpong.asx -pass 2 -acodec libfaac -vcodec libx264
-b 384k -flags +loop -cmp +chroma -partitions +parti4x4+partp8x8+partb8x8
-flags2 +mixed_refs -subq 5 -trellis 1 -refs 3 -bf 3 -b_strategy 1 -coder 1

Re: Unable to find a suitable output format- error

> Unable to find a suitable output format for '/video_check/pingandpong.asx'

It's all fun and games until someone loses an -i.

Dark Shikari