Re: [dvd::rip] MPEG-4 AVC/H.264, AAC LC, MP4

Hi.

Thanks for your reply :-)


Francesco Romani wrote:
>
>     First of all,... dvd::rip seems to support H.264 through
>     ffmpeg,... but on the
>     ffmpeg site (documentation / codecs) it says ffmpeg only support
>     decoding of
>     H.264... how does that work?
>
>
> ffmpeg docs are often out of sync with code. :(
> The situation is as follows:
> ffmpeg (better: libavcodec) has a native h.264 decoder, and relies on
> x264 (external project)
> for encoding; anyway, a native x264 support is under development and
> sometimes the question
> raise again on ffmpeg mailing lists. Don't hold your breath, though,
> this task doesn't look quick nor
> easy to complete.
If they're going to develop a native h264 encoder,.. it should be even
more interesting to support x264 natively, as a new libavc-native h264
might be not as good as the "mature" x264....


>
>
>     Or does ffmpeg use x264 for encoding (if so does it use up-to-date
>     code of x264?)? 
>
>
> Yup :)
>  
>
>     Wouldn't it be better to directly use x264?
>
>
> Maybe :)
> transcode <= 1.0.x supports h.264 encoding only through
> ffmpeg/libavcodec, while 1.1.x (CVS HEAD branch)
> has both native x264 module and libavcodec module.
>  
>
>     Is dvd::rip going to support AAC (through FAAC) and MP4?
>
>
> transcode 1.1.x has native AAC encoder; mp4 muxer is planned but not
> yet done (we lack time and/or patches ;( )
Is this native AAC encoder a new thing or is it based on FAAC? Don't get
me wrong, I won't claim that your AAC encoder is bad, but the advantage
with FAAC is that it's pretty mature.


Best wishes,
Chris.
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