Is there any parameter I have to set? Cause today I've tried some ways I knew. But with no luck. Thx, AlexB <div class="gmail_quote">On May 5, 2016 11:29 PM, "Sebastian Dröge" <<a href="mailto:sebastian@centricular.com">sebastian@centricular.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Do, 2016-05-05 at 20:33 +0300, Alex Bolotin wrote: > Hi, > > I know that I could use a pipeline that decodes audio, converts it > into something I need, but I'm curious if there is a way to do it > without decodeing/encoding. You can't convert MP3 to AAC or the other way around without reencoding. The formats are too different. > I wonder if gstreamer can do smth like ffmpeg is capable of - ffmpeg > -i 1.ts -c copy -bsf:a aac_adtstoasc -y output.mp4 That ffmpeg command is not converting MP3 to AAC without reencoding. What it does is to convert MPEG2/4 ADTS AAC to raw MPEG4 AAC with the configuration box required by MP4. In GStreamer, the aacparse element would do that. -- Sebastian Dröge, Centricular Ltd · <a href="http://www.centricular.com" rel="noreferrer" target="_blank">http://www.centricular.com</a> _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> <a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </blockquote></div>