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La file d’attente de SPIPmotion
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Sur d’autres sites (8265)
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Rematrix is needed between 10 channels and mono but there is not enough information to do it
8 octobre 2017, par sirieleI’ve been fighting for a number of days now trying to get FFmpeg working with combining several audio files at specific times into one file. So my idea was to generate silence up to the time i want to play a sound.Then merge the audio together with a filter. The below code works when I have five or less files, but seems to fall apart. What I’m trying
ffmpeg \
-i "tutorial_bass/C-maj/TutorialBassJR.wav" \
-i "tutorial_drums/TutorialDrumsJR.wav" \
-i "tutorial_drums/TutorialDrumsTU.wav" \
-i "tutorial_bass/C-maj/TutorialBassTU.wav" \
-i "tutorial_drums/TutorialDrumsTU.wav" \
-i "tutorial_drums/TutorialDrumsTD.wav" \
-i "tutorial_bass/C-maj/TutorialBassTD.wav" \
-i "tutorial_drums/TutorialDrumsTD.wav" \
-i "tutorial_drums/TutorialDrumsTR.wav" \
-i "tutorial_bass/C-maj/TutorialBassTR.wav" \
-i "tutorial_drums/TutorialDrumsTR.wav" \
-i "tutorial_drums/TutorialDrumsWL.wav" \
-i "tutorial_bass/C-maj/TutorialBassWL.wav" \
-i "tutorial_drums/TutorialDrumsWL.wav" \
-i "tutorial_drums/TutorialDrumsWU.wav" \
-i "tutorial_bass/C-maj/TutorialBassWU.wav" \
-i "tutorial_drums/TutorialDrumsWU.wav" \
-i "tutorial_drums/TutorialDrumsWD.wav" \
-i "tutorial_bass/C-maj/TutorialBassWD.wav" \
-i "tutorial_drums/TutorialDrumsWD.wav" \
-i "tutorial_drums/TutorialDrumsJL.wav" \
-i "tutorial_bass/C-maj/TutorialBassJL.wav" \
-i "tutorial_drums/TutorialDrumsJL.wav" \
-i "tutorial_drums/TutorialDrumsJR.wav" \
-i "tutorial_bass/C-maj/TutorialBassJR.wav" \
-i "tutorial_drums/TutorialDrumsJR.wav" \
-i "tutorial_drums/TutorialDrumsJU.wav" \
-i "tutorial_bass/C-maj/TutorialBassJU.wav" \
-i "tutorial_drums/TutorialDrumsJU.wav" \
-i "tutorial_drums/TutorialDrumsJD.wav" \
-i "tutorial_bass/C-maj/TutorialBassJD.wav" \
-i "tutorial_drums/TutorialDrumsJD.wav" \
-i "tutorial_drums/TutorialDrumsTL.wav" \
-i "tutorial_bass/C-maj/TutorialBassTL.wav" \
-i "tutorial_drums/TutorialDrumsTL.wav" \
-i "tutorial_drums/TutorialDrumsTR.wav" \
-i "tutorial_bass/C-maj/TutorialBassTR.wav" \
-i "tutorial_drums/TutorialDrumsTR.wav" \
-i "tutorial_drums/TutorialDrumsTU.wav" \
-i "tutorial_bass/C-maj/TutorialBassTU.wav" \
-i "tutorial_drums/TutorialDrumsTU.wav" \
-i "tutorial_drums/TutorialDrumsTD.wav" \
-i "tutorial_bass/C-maj/TutorialBassTD.wav" \
-i "tutorial_drums/TutorialDrumsTD.wav" \
-filter_complex "\
aevalsrc=0:d=3.0 [d0];\
aevalsrc=0:d=3.0 [d1];\
aevalsrc=0:d=4.5 [d2];\
aevalsrc=0:d=4.5 [d3];\
aevalsrc=0:d=4.5 [d4];\
aevalsrc=0:d=6.0 [d5];\
aevalsrc=0:d=6.0 [d6];\
aevalsrc=0:d=6.0 [d7];\
aevalsrc=0:d=7.5 [d8];\
aevalsrc=0:d=7.5 [d9];\
aevalsrc=0:d=7.5 [d10];\
aevalsrc=0:d=9.0 [d11];\
aevalsrc=0:d=9.0 [d12];\
aevalsrc=0:d=9.0 [d13];\
aevalsrc=0:d=10.5 [d14];\
aevalsrc=0:d=10.5 [d15];\
aevalsrc=0:d=10.5 [d16];\
aevalsrc=0:d=12.0 [d17];\
aevalsrc=0:d=12.0 [d18];\
aevalsrc=0:d=12.0 [d19];\
aevalsrc=0:d=13.5 [d20];\
aevalsrc=0:d=13.5 [d21];\
aevalsrc=0:d=13.5 [d22];\
aevalsrc=0:d=15.0 [d23];\
aevalsrc=0:d=15.0 [d24];\
aevalsrc=0:d=15.0 [d25];\
aevalsrc=0:d=16.5 [d26];\
aevalsrc=0:d=16.5 [d27];\
aevalsrc=0:d=16.5 [d28];\
aevalsrc=0:d=18.0 [d29];\
aevalsrc=0:d=18.0 [d30];\
aevalsrc=0:d=18.0 [d31];\
aevalsrc=0:d=19.5 [d32];\
aevalsrc=0:d=19.5 [d33];\
aevalsrc=0:d=19.5 [d34];\
aevalsrc=0:d=21.0 [d35];\
aevalsrc=0:d=21.0 [d36];\
aevalsrc=0:d=21.0 [d37];\
aevalsrc=0:d=22.5 [d38];\
aevalsrc=0:d=22.5 [d39];\
aevalsrc=0:d=22.5 [d40];\
aevalsrc=0:d=24.0 [d41];\
aevalsrc=0:d=24.0 [d42];\
aevalsrc=0:d=24.0 [d43];\
[d0][0:a]concat=n=2:v=0:a=1 [a0];\
[d1][1:a]concat=n=2:v=0:a=1 [a1];\
[d2][2:a]concat=n=2:v=0:a=1 [a2];\
[d3][3:a]concat=n=2:v=0:a=1 [a3];\
[d4][4:a]concat=n=2:v=0:a=1 [a4];\
[d5][5:a]concat=n=2:v=0:a=1 [a5];\
[d6][6:a]concat=n=2:v=0:a=1 [a6];\
[d7][7:a]concat=n=2:v=0:a=1 [a7];\
[d8][8:a]concat=n=2:v=0:a=1 [a8];\
[d9][9:a]concat=n=2:v=0:a=1 [a9];\
[d10][10:a]concat=n=2:v=0:a=1 [a10];\
[d11][11:a]concat=n=2:v=0:a=1 [a11];\
[d12][12:a]concat=n=2:v=0:a=1 [a12];\
[d13][13:a]concat=n=2:v=0:a=1 [a13];\
[d14][14:a]concat=n=2:v=0:a=1 [a14];\
[d15][15:a]concat=n=2:v=0:a=1 [a15];\
[d16][16:a]concat=n=2:v=0:a=1 [a16];\
[d17][17:a]concat=n=2:v=0:a=1 [a17];\
[d18][18:a]concat=n=2:v=0:a=1 [a18];\
[d19][19:a]concat=n=2:v=0:a=1 [a19];\
[d20][20:a]concat=n=2:v=0:a=1 [a20];\
[d21][21:a]concat=n=2:v=0:a=1 [a21];\
[d22][22:a]concat=n=2:v=0:a=1 [a22];\
[d23][23:a]concat=n=2:v=0:a=1 [a23];\
[d24][24:a]concat=n=2:v=0:a=1 [a24];\
[d25][25:a]concat=n=2:v=0:a=1 [a25];\
[d26][26:a]concat=n=2:v=0:a=1 [a26];\
[d27][27:a]concat=n=2:v=0:a=1 [a27];\
[d28][28:a]concat=n=2:v=0:a=1 [a28];\
[d29][29:a]concat=n=2:v=0:a=1 [a29];\
[d30][30:a]concat=n=2:v=0:a=1 [a30];\
[d31][31:a]concat=n=2:v=0:a=1 [a31];\
[d32][32:a]concat=n=2:v=0:a=1 [a32];\
[d33][33:a]concat=n=2:v=0:a=1 [a33];\
[d34][34:a]concat=n=2:v=0:a=1 [a34];\
[d35][35:a]concat=n=2:v=0:a=1 [a35];\
[d36][36:a]concat=n=2:v=0:a=1 [a36];\
[d37][37:a]concat=n=2:v=0:a=1 [a37];\
[d38][38:a]concat=n=2:v=0:a=1 [a38];\
[d39][39:a]concat=n=2:v=0:a=1 [a39];\
[d40][40:a]concat=n=2:v=0:a=1 [a40];\
[d41][41:a]concat=n=2:v=0:a=1 [a41];\
[d42][42:a]concat=n=2:v=0:a=1 [a42];\
[d43][43:a]concat=n=2:v=0:a=1 [a43];\
[a0][a1][a2][a3][a4][a5][a6][a7][a8][a9][a10][a11][a12][a13][a14][a15][a16][a17][a18][a19]amix=inputs=20:duration=longest [a0-a19];\
[a20][a21][a22][a23][a24][a25][a26][a27][a28][a29][a30][a31][a32][a33][a34][a35][a36][a37][a38][a39]amix=inputs=20:duration=longest [a20-a39];\
[a40][a41][a42][a43]amix=inputs=4:duration=longest [a40-a43];
[a0-a19][a20-a39][a40-a43]amix=inputs=3:duration=longest" -codec:a libmp3lame output.mp3When I run this command I get :
ffmpeg version 3.3.4 Copyright (c) 2000-2017 the FFmpeg developers
built with Apple LLVM version 8.1.0 (clang-802.0.42)
configuration: --prefix=/usr/local/Cellar/ffmpeg/3.3.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --enable-videotoolbox --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.2.0/include/openjpeg-2.2 --enable-nonfree --enable-vda
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libavresample 3. 5. 0 / 3. 5. 0
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, wav, from 'tutorial_bass/C-maj/TutorialBassJR.wav':
Duration: 00:00:01.50, bitrate: 2822 kb/s
Stream #0:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #1.0 : stereo
Input #1, wav, from 'tutorial_drums/TutorialDrumsJR.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #1:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #2.0 : stereo
Input #2, wav, from 'tutorial_drums/TutorialDrumsTU.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #2:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #3.0 : stereo
Input #3, wav, from 'tutorial_bass/C-maj/TutorialBassTU.wav':
Duration: 00:00:01.50, bitrate: 2822 kb/s
Stream #3:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #4.0 : stereo
Input #4, wav, from 'tutorial_drums/TutorialDrumsTU.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #4:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Input #5, wav, from 'tutorial_drums/TutorialDrumsTD.wav':
Duration: 00:00:04.50, bitrate: 14112 kb/s
Stream #5:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, 10 channels, flt, 14112 kb/s
Guessed Channel Layout for Input Stream #6.0 : stereo
Input #6, wav, from 'tutorial_bass/C-maj/TutorialBassTD.wav':
Duration: 00:00:01.50, bitrate: 2822 kb/s
Stream #6:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Input #7, wav, from 'tutorial_drums/TutorialDrumsTD.wav':
Duration: 00:00:04.50, bitrate: 14112 kb/s
Stream #7:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, 10 channels, flt, 14112 kb/s
Guessed Channel Layout for Input Stream #8.0 : stereo
Input #8, wav, from 'tutorial_drums/TutorialDrumsTR.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #8:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #9.0 : stereo
Input #9, wav, from 'tutorial_bass/C-maj/TutorialBassTR.wav':
Duration: 00:00:01.50, bitrate: 2822 kb/s
Stream #9:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #10.0 : stereo
Input #10, wav, from 'tutorial_drums/TutorialDrumsTR.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #10:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #11.0 : stereo
Input #11, wav, from 'tutorial_drums/TutorialDrumsWL.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #11:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #12.0 : stereo
Input #12, wav, from 'tutorial_bass/C-maj/TutorialBassWL.wav':
Duration: 00:00:01.50, bitrate: 2822 kb/s
Stream #12:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #13.0 : stereo
Input #13, wav, from 'tutorial_drums/TutorialDrumsWL.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #13:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #14.0 : stereo
Input #14, wav, from 'tutorial_drums/TutorialDrumsWU.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #14:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #15.0 : stereo
Input #15, wav, from 'tutorial_bass/C-maj/TutorialBassWU.wav':
Duration: 00:00:01.50, bitrate: 2822 kb/s
Stream #15:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #16.0 : stereo
Input #16, wav, from 'tutorial_drums/TutorialDrumsWU.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #16:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #17.0 : stereo
Input #17, wav, from 'tutorial_drums/TutorialDrumsWD.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #17:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #18.0 : stereo
Input #18, wav, from 'tutorial_bass/C-maj/TutorialBassWD.wav':
Duration: 00:00:01.50, bitrate: 2822 kb/s
Stream #18:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #19.0 : stereo
Input #19, wav, from 'tutorial_drums/TutorialDrumsWD.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #19:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #20.0 : stereo
Input #20, wav, from 'tutorial_drums/TutorialDrumsJL.wav':
Duration: 00:00:00.75, bitrate: 33869 kb/s
Stream #20:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #21.0 : stereo
Input #21, wav, from 'tutorial_bass/C-maj/TutorialBassJL.wav':
Duration: 00:00:01.51, bitrate: 2822 kb/s
Stream #21:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #22.0 : stereo
Input #22, wav, from 'tutorial_drums/TutorialDrumsJL.wav':
Duration: 00:00:00.75, bitrate: 33869 kb/s
Stream #22:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #23.0 : stereo
Input #23, wav, from 'tutorial_drums/TutorialDrumsJR.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #23:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #24.0 : stereo
Input #24, wav, from 'tutorial_bass/C-maj/TutorialBassJR.wav':
Duration: 00:00:01.50, bitrate: 2822 kb/s
Stream #24:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #25.0 : stereo
Input #25, wav, from 'tutorial_drums/TutorialDrumsJR.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #25:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #26.0 : stereo
Input #26, wav, from 'tutorial_drums/TutorialDrumsJU.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #26:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #27.0 : stereo
Input #27, wav, from 'tutorial_bass/C-maj/TutorialBassJU.wav':
Duration: 00:00:01.50, bitrate: 2822 kb/s
Stream #27:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #28.0 : stereo
Input #28, wav, from 'tutorial_drums/TutorialDrumsJU.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #28:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #29.0 : stereo
Input #29, wav, from 'tutorial_drums/TutorialDrumsJD.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #29:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #30.0 : stereo
Input #30, wav, from 'tutorial_bass/C-maj/TutorialBassJD.wav':
Duration: 00:00:01.50, bitrate: 2822 kb/s
Stream #30:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #31.0 : stereo
Input #31, wav, from 'tutorial_drums/TutorialDrumsJD.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #31:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #32.0 : stereo
Input #32, wav, from 'tutorial_drums/TutorialDrumsTL.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #32:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #33.0 : stereo
Input #33, wav, from 'tutorial_bass/C-maj/TutorialBassTL.wav':
Duration: 00:00:01.50, bitrate: 2822 kb/s
Stream #33:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #34.0 : stereo
Input #34, wav, from 'tutorial_drums/TutorialDrumsTL.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #34:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #35.0 : stereo
Input #35, wav, from 'tutorial_drums/TutorialDrumsTR.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #35:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #36.0 : stereo
Input #36, wav, from 'tutorial_bass/C-maj/TutorialBassTR.wav':
Duration: 00:00:01.50, bitrate: 2822 kb/s
Stream #36:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #37.0 : stereo
Input #37, wav, from 'tutorial_drums/TutorialDrumsTR.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #37:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #38.0 : stereo
Input #38, wav, from 'tutorial_drums/TutorialDrumsTU.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #38:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #39.0 : stereo
Input #39, wav, from 'tutorial_bass/C-maj/TutorialBassTU.wav':
Duration: 00:00:01.50, bitrate: 2822 kb/s
Stream #39:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Guessed Channel Layout for Input Stream #40.0 : stereo
Input #40, wav, from 'tutorial_drums/TutorialDrumsTU.wav':
Duration: 00:00:00.75, bitrate: 2822 kb/s
Stream #40:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Input #41, wav, from 'tutorial_drums/TutorialDrumsTD.wav':
Duration: 00:00:04.50, bitrate: 14112 kb/s
Stream #41:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, 10 channels, flt, 14112 kb/s
Guessed Channel Layout for Input Stream #42.0 : stereo
Input #42, wav, from 'tutorial_bass/C-maj/TutorialBassTD.wav':
Duration: 00:00:01.50, bitrate: 2822 kb/s
Stream #42:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, stereo, flt, 2822 kb/s
Input #43, wav, from 'tutorial_drums/TutorialDrumsTD.wav':
Duration: 00:00:04.50, bitrate: 14112 kb/s
Stream #43:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 44100 Hz, 10 channels, flt, 14112 kb/s
File 'output.mp3' already exists. Overwrite ? [y/N] y
Stream mapping:
Stream #0:0 (pcm_f32le) -> concat:in1:a0
Stream #1:0 (pcm_f32le) -> concat:in1:a0
Stream #2:0 (pcm_f32le) -> concat:in1:a0
Stream #3:0 (pcm_f32le) -> concat:in1:a0
Stream #4:0 (pcm_f32le) -> concat:in1:a0
Stream #5:0 (pcm_f32le) -> concat:in1:a0
Stream #6:0 (pcm_f32le) -> concat:in1:a0
Stream #7:0 (pcm_f32le) -> concat:in1:a0
Stream #8:0 (pcm_f32le) -> concat:in1:a0
Stream #9:0 (pcm_f32le) -> concat:in1:a0
Stream #10:0 (pcm_f32le) -> concat:in1:a0
Stream #11:0 (pcm_f32le) -> concat:in1:a0
Stream #12:0 (pcm_f32le) -> concat:in1:a0
Stream #13:0 (pcm_f32le) -> concat:in1:a0
Stream #14:0 (pcm_f32le) -> concat:in1:a0
Stream #15:0 (pcm_f32le) -> concat:in1:a0
Stream #16:0 (pcm_f32le) -> concat:in1:a0
Stream #17:0 (pcm_f32le) -> concat:in1:a0
Stream #18:0 (pcm_f32le) -> concat:in1:a0
Stream #19:0 (pcm_f32le) -> concat:in1:a0
Stream #20:0 (pcm_f32le) -> concat:in1:a0
Stream #21:0 (pcm_f32le) -> concat:in1:a0
Stream #22:0 (pcm_f32le) -> concat:in1:a0
Stream #23:0 (pcm_f32le) -> concat:in1:a0
Stream #24:0 (pcm_f32le) -> concat:in1:a0
Stream #25:0 (pcm_f32le) -> concat:in1:a0
Stream #26:0 (pcm_f32le) -> concat:in1:a0
Stream #27:0 (pcm_f32le) -> concat:in1:a0
Stream #28:0 (pcm_f32le) -> concat:in1:a0
Stream #29:0 (pcm_f32le) -> concat:in1:a0
Stream #30:0 (pcm_f32le) -> concat:in1:a0
Stream #31:0 (pcm_f32le) -> concat:in1:a0
Stream #32:0 (pcm_f32le) -> concat:in1:a0
Stream #33:0 (pcm_f32le) -> concat:in1:a0
Stream #34:0 (pcm_f32le) -> concat:in1:a0
Stream #35:0 (pcm_f32le) -> concat:in1:a0
Stream #36:0 (pcm_f32le) -> concat:in1:a0
Stream #37:0 (pcm_f32le) -> concat:in1:a0
Stream #38:0 (pcm_f32le) -> concat:in1:a0
Stream #39:0 (pcm_f32le) -> concat:in1:a0
Stream #40:0 (pcm_f32le) -> concat:in1:a0
Stream #41:0 (pcm_f32le) -> concat:in1:a0
Stream #42:0 (pcm_f32le) -> concat:in1:a0
Stream #43:0 (pcm_f32le) -> concat:in1:a0
amix -> Stream #0:0 (libmp3lame)
Press [q] to stop, [?] for help
[auto_resampler_5 @ 0x7fdc19641e00] [SWR @ 0x7fdc1c286e00] Rematrix is needed between 10 channels and mono but there is not enough information to do it
[auto_resampler_5 @ 0x7fdc19641e00] Failed to configure output pad on auto_resampler_5
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #43:0
Conversion failed!Any ideas what I’m doing wrong or other approaches I could take to do this ?
-
How can I use FFMPEG to fix a mpeg.ts file
29 septembre 2017, par Tim McClureI have an mpegts file that has some minor quality issues. Can I use ffmpeg to create an mp4 file from it and the mp4 file plays fine - meaning the transmuxing to mp4 corrected the problem. I am trying to use ffmpeg to re-encode the mpegts file to another mpegts file and through the transmuxing have the video file fixed. The script I am using :
ffmpeg -re -i 20170925T214300_S051-0001.ts -pix_fmt yuv420p -vcodec libx264 -r 25 -vf "scale=1024:576" -threads 0 -b:v: 2048k -bufsize 2244k -maxrate 2560k -profile:v baseline -g 50 -x264opts no-scenecut -x264opts force-cfr -an -f mpegts mcclure.tsIs what I am trying to do possible ?
-
HTTP Header for Duration of a MP4 for HTML 5 video
9 mars 2014, par MustafaI am trying to stream MP4 video as it is encoded from a webserver. I believe I used the appropriate flags, but it is not working correctly. When I download the video from my stream and open it with VLC, it properly shows the duration. Since a socket is not seekable, I assume it writes the metadata to end ? My Chrome browser always shows 8 seconds duration. The first 8 seconds plays at the normal speed, but afterwards the pause button turns into play button and the video plays very fast, probably as fast as it is recieved. However the audio is played at normal speed. I tried
document.getElementById('myVid').duration = 20000but it is a readonly field.I wonder, is there anyway to explicitly state the duration in HTTP headers or in any other way ? I cannot find any documentation about it.
ffmpeg -i - -vcodec libx264 -acodec libvo_aacenc -ar 44100 -ac 2 -ab 128000 -f mp4 -movflags frag_keyframe+faststart pipe:1 -fflags +genpts -re -profile baseline -level 30 -preset fastTo close-voters, that thinks it is not programming related, I use it in my own server I coded, and I need to set the duration programatically via JavaScript or setting the HTTP header. I believe it may be related to both ffmpeg or http headers, that's why I posted it here.
app.get("/video/*", function(req,res){
res.writeHead(200, {
'Content-Type': 'video/mp4',
});
var dir = req.url.split("/").splice(2).join("/");
var buf = new Buffer(dir, 'base64');
var src = buf.toString();
var Transcoder = require('stream-transcoder');
var stream = fs.createReadStream(src);
// I added my own flags to this module, they are at below:
new Transcoder(stream)
.videoCodec('libx264')
.audioCodec("libvo_aacenc")
.sampleRate(44100)
.channels(2)
.audioBitrate(128 * 1000)
.format('mp4')
.on('finish', function() {
console.log("finished");
})
.stream().pipe(res);
});exec function in that stream-transcoder module,
a.push("-fflags");
a.push("+genpts");
a.push("-re");
a.push("-profile");
a.push("baseline");
a.push("-level");
a.push("30");
a.push("-preset");
a.push("fast");
a.push("-strict");
a.push("experimental");
a.push("-frag_duration");
a.push("" + 2 * (1000 * 1000));
var child = spawn('ffmpeg', a, {
cwd: os.tmpdir()
});
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