[FFmpeg-devel] [PATCH] libshine fixed point MP3 encoding support

Paul B Mahol onemda at gmail.com
Mon Jul 30 19:44:26 CEST 2012

On 7/30/12, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
> Paul B Mahol <onemda <at> gmail.com> writes:
>> On 7/30/12, Paul B Mahol <onemda <at> gmail.com> wrote:
>> > On 7/30/12, Carl Eugen Hoyos <cehoyos <at> ag.or.at> wrote:
>> >> Paul B Mahol <onemda <at> gmail.com> writes:
>> >>
>> >>> This add support for liquidsoap libshine version,
>> >>> available at https://github.com/savonet/shine
>> >>
>> >> The OP of ticket #1457 claims that the encoder quality is bad -
>> >> did you do a speed test?
>> >> If it is slow and bad, we should consider a mp2tomp3 bitstream
>> >> filter instead.
>> >
>> > It is slower than fixed point mp2 encoder.
>> For quality mp2 seems to be more transparent for one sample
>> i tried to abx. This is higly subjective though.
> Thank you for testing!
> This may be completely wrong, but iirc, a mp2 encoder can be teached
> to output mp3, unfortunately I am unable to do that;-(
> http://thread.gmane.org/gmane.comp.video.ffmpeg.devel/59399/focus=59423
> (Michael's answer indicates that I am wrong.)

Idea is to write mp3 encoder using mp2 code, bitstream filter would be

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