wavesurfer.js
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katspaugh
`getDuration()` takes a deviation from the actual time
Wavesurfer.js version(s):
5.0.2
Browser and operating system version(s):
Chrome. version is : 98.0.4758.109
Use behaviour needed to reproduce the issue:
When I user ws.getDuration() to get the duration of the audio, the result takes a deviation from the actual time. As shown in the figure below:
Can you use ffprobe (part of ffmpeg) to scan the audio file and paste output here?
Can you use
ffprobe(part of ffmpeg) to scan the audio file and paste output here?
The result is as follow:
ffprobe version 5.0 Copyright (c) 2007-2022 the FFmpeg developers
built with Apple clang version 12.0.5 (clang-1205.0.22.11)
configuration: --prefix=/usr/local/Cellar/ffmpeg/5.0-with-options_1 --enable-shared --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-libaom --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-libsnappy --enable-libtheora --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-demuxer=dash --enable-opencl --enable-videotoolbox --disable-htmlpages
libavutil 57. 17.100 / 57. 17.100
libavcodec 59. 18.100 / 59. 18.100
libavformat 59. 16.100 / 59. 16.100
libavdevice 59. 4.100 / 59. 4.100
libavfilter 8. 24.100 / 8. 24.100
libswscale 6. 4.100 / 6. 4.100
libswresample 4. 3.100 / 4. 3.100
libpostproc 56. 3.100 / 56. 3.100
Input #0, mp3, from '下载.mp3':
Metadata:
date : 2011
artist : Walter Isaacson
title : Steve Jobs
album : Steve Jobs (Unabridged)
WOAS : http://www.audible.com/pd/B005V0QI82
track : 1/46
comment : Based on more than 40 interviews with Jobs conducted over two years—as well as interviews with more than a hundred family members, friends, adversaries, competitors, and colleagues—Walter Isaacson has written a riveting story of the roller-coaster lif
composer : Dylan Baker
UFID : BK_SANS_005704
NARRATEDBY : Dylan Baker
encoder : Lavf58.20.100
Duration: 00:12:36.30, start: 0.185756, bitrate: 128 kb/s
Stream #0:0: Audio: mp3, 22050 Hz, stereo, fltp, 128 kb/s
Stream #0:1: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 500x500 [SAR 1:1 DAR 1:1], 90k tbr, 90k tbn (attached pic)
Metadata:
comment : Other
Wavesurfer.js version(s): 5.0.2
Always test with latest version(s).
Sorry, I have upgraded it to version 6.0.2, but the problem is still present.
can you convert it to wav using ffmpeg and see if that makes a difference.
can you convert it to wav using ffmpeg and see if that makes a difference.
Yes, it is normal when converting it to .wav file, according to my observation, some .mp3 files will have problems.
Ok, so it's a browser issue, not sure how wavesurfer.js can be improved here.
Ok, so it's a browser issue, not sure how wavesurfer.js can be improved here.
But if I get the duration of the audio through the <audio /> tag of the browser, the obtained value is normal.