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Corona Radiata
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
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Lights in the Sky
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
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Head Down
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
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Echoplex
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
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Discipline
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
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Letting You
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
Autres articles (79)
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MediaSPIP : Modification des droits de création d’objets et de publication définitive
11 novembre 2010, parPar défaut, MediaSPIP permet de créer 5 types d’objets.
Toujours par défaut les droits de création et de publication définitive de ces objets sont réservés aux administrateurs, mais ils sont bien entendu configurables par les webmestres.
Ces droits sont ainsi bloqués pour plusieurs raisons : parce que le fait d’autoriser à publier doit être la volonté du webmestre pas de l’ensemble de la plateforme et donc ne pas être un choix par défaut ; parce qu’avoir un compte peut servir à autre choses également, (...) -
Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir
Sur d’autres sites (6176)
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How to solve issue for converting ismv file of h264 video codec and aac audio codec ?
4 octobre 2013, par PriyalI want to convert transmux ismv file to mp4 format. ISMV file is encoded withe the following ffmpeg detail :
Metadata:
major_brand : isml
minor_version : 1
compatible_brands: piffiso2
creation_time : 2013-10-03 14:10:41
Duration: 15:21:13.16, start: 0.000000, bitrate: 41 kb/s
Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 64
kb/s (default)
Metadata:
creation_time : 2013-10-03 14:10:41
handler_name : Audio
Stream #0:1(und): Video: h264 (avc1 / 0x31637661), 1280x720, 3217 kb/s, 29.9
7 tbr, 10000k tbn, 20000k tbc (default)
Metadata:
creation_time : 2013-10-03 14:10:41
handler_name : Video
Stream #0:2(und): Data: none (dfxp / 0x70786664), 32 kb/s (default)
Metadata:
creation_time : 2013-10-03 14:10:41
handler_name : TextI used the following ffmpeg command to transmux :
ffmpeg -y -ss 00:00:10 -i Encoder1.ismv -vcodec libx264 -ar 44100 -t 40 -preset slow -qp 0
Encoder.mp4I got output as :
ffmpeg version N-56010-g54d628a Copyright (c) 2000-2013 the FFmpeg developers
built on Sep 4 2013 00:44:27 with gcc 4.7.3 (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-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-
amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --
enable-libxvid --enable-zlib
libavutil 52. 43.100 / 52. 43.100
libavcodec 55. 31.100 / 55. 31.100
libavformat 55. 16.100 / 55. 16.100
libavdevice 55. 3.100 / 55. 3.100
libavfilter 3. 83.102 / 3. 83.102
libswscale 2. 5.100 / 2. 5.100
libswresample 0. 17.103 / 0. 17.103
libpostproc 52. 3.100 / 52. 3.100
[aac @ 040f1ba0] TYPE_FIL: Input buffer exhausted before END element found
[h264 @ 00353120] AVC: nal size -729776398
[h264 @ 00353120] no frame!
[h264 @ 00353120] AVC: nal size -570515285
[h264 @ 00353120] no frame!
[h264 @ 00353120] AVC: nal size -1477874754
[h264 @ 00353120] no frame!
[h264 @ 00353120] AVC: nal size -712314563
[h264 @ 00353120] no frame!
[h264 @ 00353120] AVC: nal size -23151524
[h264 @ 00353120] no frame!
[h264 @ 00353120] AVC: nal size -592499201
[h264 @ 00353120] no frame!
[h264 @ 00353120] AVC: nal size 225768173
[h264 @ 00353120] no frame!
[h264 @ 00353120] AVC: nal size 698187359
[h264 @ 00353120] AVC: nal size 635127544
[h264 @ 00353120] no frame!
[h264 @ 00353120] AVC: nal size -1242688339
[h264 @ 00353120] AVC: nal size 269543071
[h264 @ 00353120] no frame!
[mov,mp4,m4a,3gp,3g2,mj2 @ 0035e840] decoding for stream 1 failed
[mov,mp4,m4a,3gp,3g2,mj2 @ 0035e840] Could not find codec parameters for stream
1 (Video: h264 (avc1 / 0x31637661), 1280x720, 3217 kb/s): unspecified pixel form
at Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\inetpub\media\archives\DEFAULT WEB S
ITE\PushToPUblishPoint\Eagan_12034_Soccer_3-10-2013_14_10_19-isml\2013-10-03-14-
10-35-436\Segment001\Encoder1.ismv':
Metadata:
major_brand : isml
minor_version : 1
compatible_brands: piffiso2
creation_time : 2013-10-03 14:10:41
Duration: 15:21:13.16, start: 0.000000, bitrate: 41 kb/s
Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 64
kb/s (default)
Metadata:
creation_time : 2013-10-03 14:10:41
handler_name : Audio
Stream #0:1(und): Video: h264 (avc1 / 0x31637661), 1280x720, 3217 kb/s, 29.9
7 tbr, 10000k tbn, 20000k tbc (default)
Metadata:
creation_time : 2013-10-03 14:10:41
handler_name : Video
Stream #0:2(und): Data: none (dfxp / 0x70786664), 32 kb/s (default)
Metadata:
creation_time : 2013-10-03 14:10:41
handler_name : Text
[buffer @ 04679480] Unable to parse option value "-1" as pixel format
Last message repeated 1 times
[buffer @ 04679480] Error setting option pix_fmt to value -1.
[graph 0 input from stream 0:1 @ 040f7380] Error applying options to the filter.
Error opening filters!Please suggest the solution for Windows OS
-
FFmpeg - mapping 4 audio channels to 1 audio track
18 juillet 2016, par AvalonI have two QT MOV’s that I want to concatenate using FFmpeg, but I am having trouble understanding how to map the audio channels.
First MOV has 2 channels, Front Left and Front Right. Second MOV has 4 channels, Front Left, Front Right, Side Left and Side Right.
How do I create 1 audio track with 4 channels mapped as FL, FR, SL and SR ?
MediaInfo reports the following (not desired result) :
Audio #1
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 4mn 35s
Bit rate mode : Variable
Bit rate : 126 Kbps
Maximum bit rate : 160 Kbps
Channel(s) : 2 channels
Channel(s)_Original : 4 channels
Channel positions : Front: L C R, Side: C
Sampling rate : 48.0 KHz
Frame rate : 46.875 fps (1024 spf)
Compression mode : Lossy
Stream size : 4.14 MiB (12%)
Default : Yes
Alternate group : 1
Audio #2
ID : 3
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 4mn 35s
Bit rate mode : Variable
Bit rate : 127 Kbps
Maximum bit rate : 160 Kbps
Channel(s) : 2 channels
Channel(s)_Original : 4 channels
Channel positions : Front: L C R, Side: C
Sampling rate : 48.0 KHz
Frame rate : 46.875 fps (1024 spf)
Compression mode : Lossy
Stream size : 4.18 MiB (12%)
Default : No
Alternate group : 1
Audio #3
ID : 4
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 4mn 35s
Bit rate mode : Variable
Bit rate : 110 Kbps
Maximum bit rate : 160 Kbps
Channel(s) : 2 channels
Channel(s)_Original : 4 channels
Channel positions : Front: L C R, Side: C
Sampling rate : 48.0 KHz
Frame rate : 46.875 fps (1024 spf)
Compression mode : Lossy
Stream size : 3.62 MiB (10%)
Default : No
Alternate group : 1
Audio #4
ID : 5
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 4mn 35s
Bit rate mode : Variable
Bit rate : 110 Kbps
Maximum bit rate : 160 Kbps
Channel(s) : 2 channels
Channel(s)_Original : 4 channels
Channel positions : Front: L C R, Side: C
Sampling rate : 48.0 KHz
Frame rate : 46.875 fps (1024 spf)
Compression mode : Lossy
Stream size : 3.61 MiB (10%)
Default : No
Alternate group : 1FFmpeg command is as follows :
`ffmpeg -i "2chan.mov" -i "4chan.mov" -filter_complex "[0:v] [0:a] [1:v] [1:a] concat=n=2:v=1:a=1 [v] [a]; [v]scale=-1:288[v2]; [a]channelsplit=channel_layout=quad(side)[FL][FR][SL][SR]" -map "[v2]" -map "[FL]" -map "[FR]" -map "[SL]" -map "[SR]" -c:v libx264 -pix_fmt yuv420p -b:v 700k -minrate 700k -maxrate 700k -bufsize 700k -r 25 -sc_threshold 25 -keyint_min 25 -g 25 -qmin 3 -qmax 51 -threads 8 -c:a aac -strict -2 -b:a 160k -ar 48000 -async 1 -ac 4 combined.mp4`Console output :
ffmpeg version N-77883-gd7c75a5 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.2.0 (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-libbs2b --enable-libcaca --
enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab
le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --en
able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena
ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc
--enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enabl
e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --
enable-lzma --enable-decklink --enable-zlib
libavutil 55. 13.100 / 55. 13.100
libavcodec 57. 22.100 / 57. 22.100
libavformat 57. 21.101 / 57. 21.101
libavdevice 57. 0.100 / 57. 0.100
libavfilter 6. 25.100 / 6. 25.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0000000000575c00] ignoring 'frma' atom of 'mp4a', str
eam format is 'mp4a'
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '2chan.mov':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
creation_time : 2016-01-19 05:48:38
Duration: 00:00:45.00, start: 0.000000, bitrate: 364 kb/s
Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte1
70m/smpte170m/bt709), 768x576, 196 kb/s, SAR 1:1 DAR 4:3, 25 fps, 25 tbr, 25 tbn
, 50 tbc (default)
Metadata:
creation_time : 2016-01-19 05:48:40
handler_name : Apple Alias Data Handler
encoder : H.264
timecode : 00:00:00:00
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, flt
p, 159 kb/s (default)
Metadata:
creation_time : 2016-01-19 05:48:42
handler_name : Apple Alias Data Handler
timecode : 00:00:00:00
Stream #0:2(eng): Data: none (tmcd / 0x64636D74) (default)
Metadata:
creation_time : 2016-01-19 05:49:42
handler_name : Apple Alias Data Handler
timecode : 00:00:00:00
[mov,mp4,m4a,3gp,3g2,mj2 @ 00000000005da420] ignoring 'frma' atom of 'mp4a', str
eam format is 'mp4a'
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '4chan.mov':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
creation_time : 2016-01-19 04:11:52
Duration: 00:19:58.00, start: 0.000000, bitrate: 5118 kb/s
Stream #1:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte1
70m/smpte170m/bt709), 768x576, 4955 kb/s, 25 fps, 25 tbr, 25k tbn, 50k tbc (defa
ult)
Metadata:
creation_time : 2016-01-19 04:11:52
handler_name : Apple Alias Data Handler
encoder : H.264
timecode : 00:28:33:21
Stream #1:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, quad, fltp,
157 kb/s (default)
Metadata:
creation_time : 2016-01-19 04:11:52
handler_name : Apple Alias Data Handler
Stream #1:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s
Metadata:
rotate : 0
creation_time : 2016-01-19 04:11:52
handler_name : Apple Alias Data Handler
timecode : 00:28:33:21
File 'Output_Complex_6.mp4' already exists. Overwrite ? [y/N] y
-async is forwarded to lavfi similarly to -af aresample=async=1:min_hard_comp=0.
100000:first_pts=0.
Last message repeated 1 times
[libx264 @ 000000000057d260] using SAR=1/1
[libx264 @ 000000000057d260] using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
SlowShuffle
[libx264 @ 000000000057d260] profile High, level 2.1
[libx264 @ 000000000057d260] 264 - core 148 r2638 7599210 - H.264/MPEG-4 AVC cod
ec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 r
ef=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed
_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pski
p=1 chroma_qp_offset=-2 threads=8 lookahead_threads=1 sliced_threads=0 nr=0 deci
mate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_
adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=25 keyint_min=13
scenecut=25 intra_refresh=0 rc_lookahead=25 rc=cbr mbtree=1 bitrate=700 ratetol
=1.0 qcomp=0.60 qpmin=3 qpmax=51 qpstep=4 vbv_maxrate=700 vbv_bufsize=700 nal_hr
d=none filler=0 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'Output_Complex_6.mp4':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
title : TestTitle
encoder : Lavf57.21.101
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 384x28
8 [SAR 1:1 DAR 4:3], q=3-51, 700 kb/s, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
encoder : Lavc57.22.100 libx264
Side data:
unknown side data type 10 (24 bytes)
Stream #0:1: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, 4.0, fltp,
160 kb/s
Metadata:
encoder : Lavc57.22.100 aac
Stream #0:2: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, 4.0, fltp,
160 kb/s
Metadata:
encoder : Lavc57.22.100 aac
Stream #0:3: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, 4.0, fltp,
160 kb/s
Metadata:
encoder : Lavc57.22.100 aac
Stream #0:4: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, 4.0, fltp,
160 kb/s
Metadata:
encoder : Lavc57.22.100 aac
Stream mapping:
Stream #0:0 (h264) -> concat:in0:v0
Stream #0:1 (aac) -> concat:in0:a0
Stream #1:0 (h264) -> concat:in1:v0
Stream #1:1 (aac) -> concat:in1:a0
scale -> Stream #0:0 (libx264)
channelsplit:FL -> Stream #0:1 (aac)
channelsplit:FR -> Stream #0:2 (aac)
channelsplit:SL -> Stream #0:3 (aac)
channelsplit:SR -> Stream #0:4 (aac)
Press [q] to stop, [?] for help
frame= 85 fps=0.0 q=3.0 size= 6kB time=00:00:02.68 bitrate= 18.8kbits/s
frame= 150 fps=148 q=3.0 size= 14kB time=00:00:05.24 bitrate= 21.3kbits/s
frame= 198 fps=130 q=3.0 size= 65kB time=00:00:07.21 bitrate= 74.4kbits/s
frame= 238 fps=118 q=3.0 size= 125kB time=00:00:08.78 bitrate= 116.2kbits/s
frame= 271 fps=108 q=3.0 size= 171kB time=00:00:10.09 bitrate= 138.9kbits/s
frame= 304 fps=100 q=3.0 size= 218kB time=00:00:11.45 bitrate= 156.0kbits/s
frame= 339 fps= 96 q=3.0 size= 268kB time=00:00:12.84 bitrate= 171.0kbits/s
frame= 372 fps= 93 q=-1.0 Lsize= 376kB time=00:00:14.80 bitrate= 208.0kbits
/s speed=3.69x
video:27kB audio:319kB subtitle:0kB other streams:0kB global headers:0kB muxing
overhead: 8.551113%
[libx264 @ 000000000057d260] frame I:15 Avg QP: 3.01 size: 1370
[libx264 @ 000000000057d260] frame P:90 Avg QP: 3.00 size: 24
[libx264 @ 000000000057d260] frame B:267 Avg QP: 3.00 size: 17
[libx264 @ 000000000057d260] consecutive B-frames: 4.3% 0.0% 0.0% 95.7%
[libx264 @ 000000000057d260] mb I I16..4: 95.8% 0.0% 4.2%
[libx264 @ 000000000057d260] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 0.1% 0.0
% 0.0% 0.0% 0.0% skip:99.9%
[libx264 @ 000000000057d260] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.0% 0.0
% 0.0% direct: 0.0% skip:100.0% L0: 0.0% L1:100.0% BI: 0.0%
[libx264 @ 000000000057d260] 8x8 transform intra:0.0% inter:50.0%
[libx264 @ 000000000057d260] coded y,uvDC,uvAC intra: 3.1% 8.8% 8.2% inter: 0.0%
0.0% 0.0%
[libx264 @ 000000000057d260] i16 v,h,dc,p: 90% 5% 5% 0%
[libx264 @ 000000000057d260] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 46% 29% 23% 0% 0%
0% 0% 0% 0%
[libx264 @ 000000000057d260] i8c dc,h,v,p: 76% 7% 17% 0%
[libx264 @ 000000000057d260] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 000000000057d260] kb/s:14.64
[aac @ 0000000000578320] Qavg: 65394.652
[aac @ 0000000000593020] Qavg: 65473.359
[aac @ 0000000000593940] Qavg: 65536.000
[aac @ 0000000000594260] Qavg: 65536.000
Exiting normally, received signal 2.
Terminate batch job (Y/N)? Y -
generating silence audio using ffmpeg with specific bitrate and duration time less than one second cannot get the audio with the desired bitrate
28 août 2018, par bambooomI’d like to generate a silence audio file using ffmpeg with specific bitrate and the duration is less than one second. I found that the generated audio file does not have the desired bitrate. But if I expand the duration to 2 seconds, the bitrate seems to be correct.
For example :
ffmpeg -f lavfi -i anullsrc=r=22050:cl=mono -t 0.3 -acodec mp3 -ab 48k -y silence.mp3The generated silence.mp3’s bitrate seems not 48kb/s :
$ ffprobe silence.mp3
ffprobe version 3.4.2 Copyright (c) 2007-2018 the FFmpeg developers
built with Apple LLVM version 9.1.0 (clang-902.0.39.1)
configuration: --prefix=/usr/local/Cellar/ffmpeg/3.4.2 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --disable-jack --enable-gpl --enable-libmp3lame --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --enable-videotoolbox --disable-lzma
libavutil 55. 78.100 / 55. 78.100
libavcodec 57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter 6.107.100 / 6.107.100
libavresample 3. 7. 0 / 3. 7. 0
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
Input #0, mp3, from 'silence.mp3':
Metadata:
encoder : Lavf57.83.100
Duration: 00:00:00.37, start: 0.050113, bitrate: 52 kb/s
Stream #0:0: Audio: mp3, 22050 Hz, mono, s16p, 48 kb/sIf the duration is 2 seconds, bitrate seems OK :
$ ffmpeg -f lavfi -i anullsrc=r=22050:cl=mono -t 2 -acodec mp3 -ab 48k -y silence.mp3
$ ffprobe silence.mp3
ffprobe version 3.4.2 Copyright (c) 2007-2018 the FFmpeg developers
built with Apple LLVM version 9.1.0 (clang-902.0.39.1)
configuration: --prefix=/usr/local/Cellar/ffmpeg/3.4.2 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --disable-jack --enable-gpl --enable-libmp3lame --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --enable-videotoolbox --disable-lzma
libavutil 55. 78.100 / 55. 78.100
libavcodec 57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter 6.107.100 / 6.107.100
libavresample 3. 7. 0 / 3. 7. 0
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
Input #0, mp3, from 'silence.mp3':
Metadata:
encoder : Lavf57.83.100
Duration: 00:00:02.06, start: 0.050113, bitrate: 48 kb/s
Stream #0:0: Audio: mp3, 22050 Hz, mono, s16p, 48 kb/sIs there any way to keep the bitrate as desired ?
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