[FFmpeg-user] (mpeg2) how to set "audio delay relative to video" as 0 ?

[Stefano Sabatini]

On date Thursday 2014-09-18 08:58:33 +0800, linxs wrote:
> D:\>ffprobe 0.mpg
> ffprobe version N-63439-g96470ca Copyright (c) 2007-2014 the FFmpeg
> developers
>   built on May 25 2014 22:01:51 with gcc 4.8.2 (GCC)
>   configuration: --enable-gpl --enable-version3 --disable-w32threads
> --enable-av
> isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls
> --enab
> le-iconv --enable-libass --enable-libbluray --enable-libcaca
> --enable-libfreetyp
> e --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug
> --enable-
> libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb
> --enable-libope
> njpeg --enable-libopus --enable-librtmp --enable-libschroedinger
> --enable-libsox
> r --enable-libspeex --enable-libtheora --enable-libtwolame
> --enable-libvidstab -
> -enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis
> --enable-libvpx
> --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265
> --enable-
> libxavs --enable-libxvid --enable-decklink --enable-zlib
>   libavutil      52. 86.100 / 52. 86.100
>   libavcodec     55. 65.100 / 55. 65.100
>   libavformat    55. 41.100 / 55. 41.100
>   libavdevice    55. 13.101 / 55. 13.101
>   libavfilter     4.  5.100 /  4.  5.100
>   libswscale      2.  6.100 /  2.  6.100
>   libswresample   0. 19.100 /  0. 19.100
>   libpostproc    52.  3.100 / 52.  3.100
> Input #0, mpeg, from '0.mpg':
>   Duration: 00:00:14.98, start: 0.529978, bitrate: 953 kb/s
>     Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 720x576 [SAR
> 16:1
> 5 DAR 4:3], max. 104857 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
>     Stream #0:1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 384 kb/s

ffprobe -show_streams?

Also you can check the PTS values of the first timestamps, something
like:
ffprobe -show_packets -of compact -select_streams v INPUT -read_intervals "%+#1"
ffprobe -show_packets -of compact -select_streams a INPUT -read_intervals "%+#1"

> I added -af "asetpts=PTS+0/TB" to the options of ffmpeg.
> The audio delay relative to video of output mpg  is -10ms too. nothing
> changed.

What about:
asetpts=PTS+0.010/TB

Please don't top post.