[FFmpeg-user] segment transcoded audio has blips

[Derek Rachul]

Hi all,

I'm trying to do segmented transcoding of one muxed input to several
outputs, and the video seems to be working fine, but when I do audio the
playback seems to have gaps (small blips around the segment boundaries.)

To demonstrate what I'm trying to do, see the following example scripts -
one using -f segment, the other doing manual segmenting using -ss/-t:

http://pastebin.com/4vfHE4fg
http://pastebin.com/dGAa2kyL

Both exhibit the same issue, trying a different format (i.e. mp3) also
yields similar results.

The version I'm using:

ffmpeg version 2.7.3-0ubuntu0.15.10.1 Copyright (c) 2000-2015 the FFmpeg
developers
built with gcc 5.2.1 (Ubuntu 5.2.1-22ubuntu2) 20151010
configuration: --prefix=/usr --extra-version=0ubuntu0.15.10.1
--build-suffix=-ffmpeg --toolchain=hardened
--libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu
--enable-gpl --enable-shared --disable-stripping --enable-avresample
--enable-avisynth --enable-frei0r --enable-gnutls --enable-ladspa
--enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca
--enable-libcdio --enable-libflite --enable-libfontconfig
--enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm
--enable-libmodplug --enable-libmp3lame --enable-libopenjpeg
--enable-openal --enable-libopus --enable-libpulse --enable-librtmp
--enable-libschroedinger --enable-libshine --enable-libspeex
--enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx
--enable-libwavpack --enable-libwebp --enable-libxvid --enable-libzvbi
--enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883
--enable-libzmq --enable-libssh --enable-libsoxr --enable-libx264
--enable-libopencv --enable-libx265
libavutil      54. 27.100 / 54. 27.100
libavcodec     56. 41.100 / 56. 41.100
libavformat    56. 36.100 / 56. 36.100
libavdevice    56.  4.100 / 56.  4.100
libavfilter     5. 16.101 /  5. 16.101
libavresample   2.  1.  0 /  2.  1.  0
libswscale      3.  1.101 /  3.  1.101
libswresample   1.  2.100 /  1.  2.100
libpostproc    53.  3.100 / 53.  3.100

Any insight or help is welcome.

Regards,
Derek.