On Thu, Jun 19, 2014 at 11:37 AM, Ricky Huang <rhuang.w...@gmail.com> wrote:
> > On Jun 19, 2014, at 8:48 AM, Steve Boyer <steveboye...@gmail.com> wrote: > > On Thu, Jun 19, 2014 at 10:45 AM, Ricky Huang <rhuang.w...@gmail.com> > wrote: > >> Hello all, >> >> I am trying to use the following syntax to cut an mp3 audio clip starting >> at 2 minute mark for 30 seconds: >> >> ./ffmpeg -ss 00:02:00 -i angel.mp3 -t 00:00:30 angel_ffmpeg.mp3 >> >> ffmpeg complains about "Encoder (codec none) not found for output stream >> #0:1". It seems like it's trying to look for and output a video? Are >> there switches to enable audio-only processing? >> >> > Give: "ffmpeg -ss 00:02:00 -i angel.mp3 -t 30 -vn -c:a copy angel_cut.mp3" > a try. "-vn" disables video, and "-c:a copy" tells ffmpeg to copy the > streams directly and not encode. > > Steve B. > > > Thanks for the quick answer, Steve B. > > BTW, can MP3's be cut without re-encoding of any sort? > > If the previous command works as I believe it should, the only encoding that ffmpeg would do is in writing metadata (encoder used, album information if given, etc). I say "encoding" because it is in the most basic sense, encoding information to the MP3 file - in this same sense, tagging your MP3 collection "encodes" information as well. The underlying MP3 audio stream should be identical to the original (aside from portions trimmed). Steve B. > > >> Thanks in advance! >> >> >> _______________________________________________ >> Libav-user mailing list >> Libav-user@ffmpeg.org >> http://ffmpeg.org/mailman/listinfo/libav-user >> >> > _______________________________________________ > Libav-user mailing list > Libav-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/libav-user > > > > _______________________________________________ > Libav-user mailing list > Libav-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/libav-user > >
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