Код:
ffmpeg version git-2020-05-13-b12b053 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 9.3.1 (GCC) 20200513
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-libsrt --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-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
libavutil 56. 45.100 / 56. 45.100
libavcodec 58. 84.100 / 58. 84.100
libavformat 58. 43.100 / 58. 43.100
libavdevice 58. 9.103 / 58. 9.103
libavfilter 7. 80.100 / 7. 80.100
libswscale 5. 6.101 / 5. 6.101
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
title : Maybe.mp4
encoder : Lavf58.43.100
Duration: 00:00:18.30, start: 0.000000, bitrate: 929 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 640x350 [SAR 1:1 DAR 64:35], 791 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> wrapped_avframe (native))
Stream #0:1 -> #0:1 (aac (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
Output #0, null, to 'nul':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.43.100
Stream #0:0(und): Video: wrapped_avframe, yuv420p, 640x350 [SAR 1:1 DAR 64:35], q=2-31, 200 kb/s, 30 fps, 30 tbn, 30 tbc (default)
Metadata:
handler_name : VideoHandler
encoder : Lavc58.84.100 wrapped_avframe
Stream #0:1(und): Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s (default)
Metadata:
handler_name : SoundHandler
encoder : Lavc58.84.100 pcm_s16le
frame= 549 fps=0.0 q=-0.0 Lsize=N/A time=00:00:18.30 bitrate=N/A speed=57.3x
video:287kB audio:3436kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
[Parsed_volumedetect_0 @ 000002a929142a80] n_samples: 1759232
[Parsed_volumedetect_0 @ 000002a929142a80] mean_volume: -47.3 dB
[Parsed_volumedetect_0 @ 000002a929142a80] max_volume: -15.9 dB
[Parsed_volumedetect_0 @ 000002a929142a80] histogram_15db: 10
[Parsed_volumedetect_0 @ 000002a929142a80] histogram_16db: 18
[Parsed_volumedetect_0 @ 000002a929142a80] histogram_17db: 14
[Parsed_volumedetect_0 @ 000002a929142a80] histogram_18db: 22
[Parsed_volumedetect_0 @ 000002a929142a80] histogram_19db: 32
[Parsed_volumedetect_0 @ 000002a929142a80] histogram_20db: 70
[Parsed_volumedetect_0 @ 000002a929142a80] histogram_21db: 114
[Parsed_volumedetect_0 @ 000002a929142a80] histogram_22db: 138
[Parsed_volumedetect_0 @ 000002a929142a80] histogram_23db: 298
[Parsed_volumedetect_0 @ 000002a929142a80] histogram_24db: 286
[Parsed_volumedetect_0 @ 000002a929142a80] histogram_25db: 382
[Parsed_volumedetect_0 @ 000002a929142a80] histogram_26db: 538
