[vlc-devel] mp3 transcoding creates slow audio (was Re: Slow audio when streaming flv

[Dave Still]

I did some more testing, and it appears that the slow audio is  
happening for any a/v file where audio is transcoded is transcoded to  
mp3.  For example, the following command-line:

./VLC.app/Contents/MacOS/VLC -vvv -I dummy ~/Movies/makeup.wmv --sout  
"#transcode 
{vcodec 
= 
mp4v 
,acodec 
= 
mp3 
,samplerate 
= 
22050 
,ab 
= 
128 
,vb 
=512,width=320,height=240,channels=2}:std{access=file,dst=stream.mov}"  
--audio-filter scaletempo vlc://quit

The resulting stream.mov plays back in QuickTime, but the audio is  
hella-slow.  Result is the same with or without the scaletempo audio  
filter.

- Dave

On Jun 25, 2008, at 1:42 PM, Dave Still wrote:

> Managed to rebuild contribs; no change.  Also, I compiled latest on my
> Ubuntu 8.04 server with latest ffmpeg, x264 and vlc-0.9.0-git and have
> the same issue there, so it's not platform specific.
>
> - Dave
>
> On Jun 23, 2008, at 11:36 AM, Dave Still wrote:
>
>> I just rebuilt from latest git, and the problem persists.  I also
>> tried to rebuild contribs, but I'm having issues connecting to ftp.videolan.org
>> , so it's balking on pulling libdca atm, but my previous contrib  
>> build
>> was not that old (maybe a couple of days).
>>
>> - Dave
>>
>> On Jun 23, 2008, at 12:42 AM, Antoine Cellerier wrote:
>>
>>> Dave,
>>>
>>> On Sat, Jun 21, 2008, Dave Still wrote:
>>>> I did some more testing on this bug, and it appears to slow down  
>>>> the
>>>> audio for *all* audio codecs selected (tested with mp4a and
>>>> mpga).  I
>>>> also opened a Trac ticket for the issue:
>>>>
>>>> http://trac.videolan.org/vlc/ticket/1630
>>>
>>> Can you try with a recent build? (post
>>> f5623dec1ca290e9adcbbc34ba4fe3f03a4c2e69)
>>>
>>> Cheers,
>>>
>>> -- 
>>> Antoine Cellerier
>>> dionoea
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