Hello
Can you please explain me this difference:
I have an audio-stream from a blu-ray (23.976 fps).
When I calculate the duration it should be: 133799/(24000/1001) =
5580.533292 seconds.
When I encode the extracted audio stream it is:
_ffmpeg -i _audio2.flac -f null -
ffmpeg version N-95216-ge6625ca41f Copyright (c) 2000-2019 the FFmpeg
developers
built with gcc 9.2.1 (GCC) 20190918
configuration: --enable-gpl --enable-version3 --enable-sdl2
--enable-fontconfig --enable-gnutls --enable-iconv --enable-libass
--enable-libdav1d --enable-libbluray --enable-libfreetype
--enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy
--enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx
--enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265
--enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp
--enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc
--enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom
--enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va
--enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
--enable-libopenmpt --enable-amf
libavutil 56. 35.100 / 56. 35.100
libavcodec 58. 59.101 / 58. 59.101
libavformat 58. 33.100 / 58. 33.100
libavdevice 58. 9.100 / 58. 9.100
libavfilter 7. 61.100 / 7. 61.100
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
Input #0, flac, from '_audio2.flac':
Metadata:
title : THE_GIRL_WITH_THE_DRAGON_TATTOO.Title1
encoder : Lavf58.20.100
Duration: 01:33:00.70, start: 0.000000, bitrate: 1111 kb/s
Stream #0:0: Audio: flac, 48000 Hz, 5.1(side), s16
Stream mapping:
Stream #0:0 -> #0:0 (flac (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
Output #0, null, to 'pipe:':
Metadata:
title : THE_GIRL_WITH_THE_DRAGON_TATTOO.Title1
encoder : Lavf58.33.100
Stream #0:0: Audio: pcm_s16le, 48000 Hz, 5.1(side), s16, 4608 kb/s
Metadata:
encoder : Lavc58.59.101 pcm_s16le
size=N/A time=01:33:00.70 bitrate=N/A speed= 435x
video:0kB audio:3139146kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: unknown
à 01:33:00.70 = 5580.7 seconds
Why is there a difference of 0.166708 seconds?
Best
Felix
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