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Richard Stallman et le logiciel libre
19 octobre 2011, par
Mis à jour : Mai 2013
Langue : français
Type : Texte
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Displaying 25 inputs into a 5x5 grid using -ffmpeg- with the correct layout code
1er septembre 2021, par Clive NicholasI'm now looking to expand the 4x4 code very helpfully provided by @llogan yesterday into one taking 25 different and equally-scaled audio and video inputs to make a 5x5 grid (at which point, I'll stop) :


ffmpeg -i a.mp4 -i b.mp4 -i c.mp4 -i d.mp4 -i e.mp4 -i f.mp4 -i g.mp4 -i h.mp4 -i i.mp4 -i j.mp4 -i k.mp4 -i l.mp4 -i m.mp4 -i n.mp4 -i o.mp4 -i p.mp4 -i q.mp4 -i r.mp4 -i s.mp4 -i t.mp4 -i u.mp4 -i v.mp4 -i w.mp4 -i x.mp4 -i y.mp4 \
 -filter_complex \
 "[0:v]scale=iw/5:-1[v0];[1:v]scale=iw/5:-1[v1];[2:v]scale=iw/5:-1[v2]; \ 
 [3:v]scale=iw/5:-1[v3];[4:v]scale=iw/5:-1[v4];[5:v]scale=iw/5:-1[v5]; \ 
 [6:v]scale=iw/5:-1[v6];[7:v]scale=iw/5:-1[v7];[8:v]scale=iw/5:-1[v8]; \ 
 [9:v]scale=iw/5:-1[v9];[10:v]scale=iw/5:-1[v10];[11:v]scale=iw/5:-1[v11]; \
 [12:v]scale=iw/5:-1[v12];[13:v]scale=iw/5:-1[v13];[14:v]scale=iw/5:-1[v14]; \
 [15:v]scale=iw/5:-1[v15];[16:v]scale=iw/5:-1[v16];[17:v]scale=iw/5:-1[v17]; \ 
 [18:v]scale=iw/5:-1[v18];[19:v]scale=iw/5:-1[v19];[20:v]scale=iw/5:-1[v20]; \
 [21:v]scale=iw/5:-1[v21];[22:v]scale=iw/5:-1[v22];[23:v]scale=iw/5:-1[v23]; \ 
 [24:v]scale=iw/5:-1[v24]; \
 [v0][v1][v2][v3][v4][v5][v6][v7][v8][v9][v10][v11][v12][v13][v14][v15][v16][v17][v18][v19][v20][v21][v22][v23][v24]xstack=inputs=25:layout=0_0|0_h0|0_h0+h1|0_h0+h1+h2|0_h0+h1+h2+h3|w0_0|w0_h0|w0_h0+h1|w0_h0+h1+h2|w0_h0+h1+h2+h3|w0+w4_0|w0+w4_h0|w0+w4_h0+h1|w0+w4_h0+h1+h2|w0+w4_h0+h1+h2+h3|w0+w4+w8_0|w0+w4+w8_h0|w0+w4+w8_h0+h1|w0+w4+w8_h0+h1+h2|w0+w4+w8_h0+h1+h2+h3|w0+w4+w8+w12_0|w0+w4+w8+w12_h0|w0+w4+w8+w12_h0+h1|w0+w4+w8+w12_h0+h1+h2|w0+w4+w8+w12_h0+h1+h2+h3; \
 [0:a][1:a][2:a][3:a][4:a][5:a][6:a][7:a][8:a][9:a][10:a][11:a][12:a][13:a][14:a][15:a][16:a][17:a][18:a][19:a][20:a][21:a][22:a][23:a][24:a]amix=inputs=25" \
output.mp4


Unfortunately, this produces errors :


ffmpeg version 4.3.2-0+deb11u1ubuntu1 Copyright (c) 2000-2021 the FFmpeg developers
 built with gcc 10 (Ubuntu 10.2.1-20ubuntu1)
 configuration: --prefix=/usr --extra-version=0+deb11u1ubuntu1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
 WARNING: library configuration mismatch
 avcodec configuration: --prefix=/usr --extra-version=0+deb11u1ubuntu1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared --enable-version3 --disable-doc --disable-programs --enable-libaribb24 --enable-liblensfun --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc
 libavutil 56. 51.100 / 56. 51.100
 libavcodec 58. 91.100 / 58. 91.100
 libavformat 58. 45.100 / 58. 45.100
 libavdevice 58. 10.100 / 58. 10.100
 libavfilter 7. 85.100 / 7. 85.100
 libavresample 4. 0. 0 / 4. 0. 0
 libswscale 5. 7.100 / 5. 7.100
 libswresample 3. 7.100 / 3. 7.100
 libpostproc 55. 7.100 / 55. 7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'abc.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:08.00, start: 0.000000, bitrate: 248 kb/s
 Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 41 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 193 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'ang.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:10.00, start: 0.000000, bitrate: 480 kb/s
 Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 271 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 194 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #2, mov,mp4,m4a,3gp,3g2,mj2, from 'ard.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:09.00, start: 0.000000, bitrate: 256 kb/s
 Stream #2:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 49 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #2:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 193 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #3, mov,mp4,m4a,3gp,3g2,mj2, from 'atv.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:17.00, start: 0.000000, bitrate: 259 kb/s
 Stream #3:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 53 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #3:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 193 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #4, mov,mp4,m4a,3gp,3g2,mj2, from 'bor.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:09.00, start: 0.000000, bitrate: 255 kb/s
 Stream #4:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 48 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #4:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 192 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #5, mov,mp4,m4a,3gp,3g2,mj2, from 'cen.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:07.00, start: 0.000000, bitrate: 461 kb/s
 Stream #5:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 250 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #5:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 196 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #6, mov,mp4,m4a,3gp,3g2,mj2, from 'cha.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:05.00, start: 0.000000, bitrate: 267 kb/s
 Stream #6:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 59 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #6:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 194 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #7, mov,mp4,m4a,3gp,3g2,mj2, from 'grad.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:05.01, start: 0.000000, bitrate: 246 kb/s
 Stream #7:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 39 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #7:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 192 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #8, mov,mp4,m4a,3gp,3g2,mj2, from 'gram.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:09.00, start: 0.000000, bitrate: 294 kb/s
 Stream #8:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 86 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #8:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 195 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #9, mov,mp4,m4a,3gp,3g2,mj2, from 'htv.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:12.01, start: 0.000000, bitrate: 238 kb/s
 Stream #9:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 29 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #9:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 196 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #10, mov,mp4,m4a,3gp,3g2,mj2, from 'its1.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:07.00, start: 0.000000, bitrate: 238 kb/s
 Stream #10:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 31 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #10:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 192 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #11, mov,mp4,m4a,3gp,3g2,mj2, from 'its2.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:08.00, start: 0.000000, bitrate: 241 kb/s
 Stream #11:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 34 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #11:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 192 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #12, mov,mp4,m4a,3gp,3g2,mj2, from 'lwt.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:10.00, start: 0.000000, bitrate: 239 kb/s
 Stream #12:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 30 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #12:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 195 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #13, mov,mp4,m4a,3gp,3g2,mj2, from 'sou.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:08.00, start: 0.000000, bitrate: 247 kb/s
 Stream #13:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 39 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #13:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 194 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #14, mov,mp4,m4a,3gp,3g2,mj2, from 'stv.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:09.00, start: 0.000000, bitrate: 257 kb/s
 Stream #14:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 51 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #14:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 192 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #15, mov,mp4,m4a,3gp,3g2,mj2, from 'tha.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:06.00, start: 0.000000, bitrate: 454 kb/s
 Stream #15:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 245 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #15:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 194 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #16, mov,mp4,m4a,3gp,3g2,mj2, from 'tlc.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:09.00, start: 0.000000, bitrate: 275 kb/s
 Stream #16:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 67 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #16:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 194 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #17, mov,mp4,m4a,3gp,3g2,mj2, from 'tsw.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:11.00, start: 0.000000, bitrate: 457 kb/s
 Stream #17:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 251 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #17:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 192 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #18, mov,mp4,m4a,3gp,3g2,mj2, from 'ttt.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:10.01, start: 0.000000, bitrate: 258 kb/s
 Stream #18:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 51 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #18:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 193 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #19, mov,mp4,m4a,3gp,3g2,mj2, from 'tvam.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf57.82.100
 Duration: 00:00:11.31, start: 0.000000, bitrate: 383 kb/s
 Stream #19:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 352x288 [SAR 178:163 DAR 1958:1467], 251 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #19:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #20, mov,mp4,m4a,3gp,3g2,mj2, from 'tvs.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:10.01, start: 0.000000, bitrate: 252 kb/s
 Stream #20:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 44 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #20:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 194 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #21, mov,mp4,m4a,3gp,3g2,mj2, from 'tww.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:09.00, start: 0.000000, bitrate: 277 kb/s
 Stream #21:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 69 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #21:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 194 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #22, mov,mp4,m4a,3gp,3g2,mj2, from 'utv.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:08.00, start: 0.000000, bitrate: 443 kb/s
 Stream #22:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 234 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #22:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 194 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #23, mov,mp4,m4a,3gp,3g2,mj2, from 'wtv.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:08.00, start: 0.000000, bitrate: 431 kb/s
 Stream #23:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 224 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #23:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 194 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #24, mov,mp4,m4a,3gp,3g2,mj2, from 'ytv.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.45.100
 Duration: 00:00:08.00, start: 0.000000, bitrate: 332 kb/s
 Stream #24:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360, 123 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #24:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 195 kb/s (default)
 Metadata:
 handler_name : SoundHandler
[AVFilterGraph @ 0x55ad3b4d4a00] No such filter: ' '
Error initializing complex filters.
Invalid argument


The
layoutcode has now become extremely complex, but I've carefully followed the 4x4 example as given in the manual here and I don't think I'm doing much wrong. Breaking down and reordering thelayoutcode I used above looks like this :

input1(0, 0) | input6 (w0, 0) | input11(w0+w4, 0) | input16(w0+w4+w8, 0) | input21(w0+w4+w8+w12, 0)
input2(0, h0) | input7 (w0, h0) | input12(w0+w4, h0) | input17(w0+w4+w8, h0) | input22(w0+w4+w8+w12, h0)
input3(0, h0+h1) | input8 (w0, h0+h1) | input13(w0+w4, h0+h1) | input18(w0+w4+w8, h0+h1) | input23(w0+w4+w8+w12, h0+h1)
input4(0, h0+h1+h2) | input9 (w0, h0+h1+h2) | input14(w0+w4, h0+h1+h2) | input19(w0+w4+w8, h0+h1+h2) | input24(w0+w4+w8+w12, h0+h1+h2)
input5(0, h0+h1+h2+h3)| input10(w0, h0+h1+h2+h3) | input15(w0+w4, h0+h1+h2+h3)| input20(w0+w4+w8, h0+h1+h2+h3)| input25(w0+w4+w8+w12, h0+h1+h2+h3)


To my mind,
w12andh3would logically be the next set of width and height parameters to add on in order to make the grid expansion from 4x4 to 5x5 work. Is that what's causing the code to choke ? If it's not this, it's not obvious to me what it might be, as I've checked the whole code as thoroughly as possible.

Once again, I'll be very grateful for your assistance.


Thanks very much, Clive


-
ffmpeg DASH encoding : always getting bitrate as 200k for vp9 codec
29 novembre 2019, par SaurabhI am using following command, earlier put here : to generate DASH files :
ffmpeg -y -nostdin -loglevel error -i "$1" \
-map 0:v:0 -map 0:v:0 -map 0:v:0 -map 0:v:0 -map 0:v:0 -map 0:v:0 -map 0:a\?:0 \
-maxrate:v:0 350k -bufsize:v:0 700k -c:v:0 libx264 -filter:v:0 "scale=320:-2" \
-maxrate:v:1 1000k -bufsize:v:1 2000k -c:v:1 libx264 -filter:v:1 "scale=640:-2" \
-maxrate:v:2 3000k -bufsize:v:2 6000k -c:v:2 libx264 -filter:v:2 "scale=1280:-2" \
-maxrate:v:3 300k -minrate:v:3 100k -bufsize:v:3 600k -c:v:3 libvpx-vp9 -filter:v:3 "scale=320:-2" \
-maxrate:v:4 1088k -minrate:v:4 200k -bufsize:v:4 2176k -c:v:4 libvpx-vp9 -filter:v:4 "scale=640:-2" \
-maxrate:v:5 1500k -minrate:v:5 300k -bufsize:v:5 3000k -c:v:5 libvpx-vp9 -filter:v:5 "scale=1280:-2" \
-use_timeline 1 -use_template 1 -adaptation_sets "id=0,streams=0,1,2 id=1,streams=3,4,5 id=2,streams=a" \
-threads 8 -crf 3 -seg_duration 5 -hls_init_time 1 -hls_time 5 -hls_playlist true -f dash "$2"The issue is, in the output, I always get bandwidth as 200k for vp9 codec(see output below), while for same video bandwidth for h264 codec varies as par resolution and quite less, I expected vp9 to be even less as it compresses more. I have tested using multiple different options like :
-b:v,-deadline,-cpu-used-crf, etc, but not working expected with different values of these, What am I missing ?Sample output
mpdfile :<?xml version="1.0" encoding="utf-8"?>
<mpd xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" mediapresentationduration="PT25.4S" minbuffertime="PT15.0S">
<programinformation>
</programinformation>
<period start="PT0.0S">
<adaptationset contenttype="video" segmentalignment="true" bitstreamswitching="true" lang="und">
<representation mimetype="video/mp4" codecs="avc1.64000c" bandwidth="104972" width="320" height="180" framerate="24000/1001">
<segmenttemplate timescale="24000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="1">
<segmenttimeline>
<s t="0" d="130130"></s>
<s d="250250"></s>
<s d="176176"></s>
<s d="54054"></s>
</segmenttimeline>
</segmenttemplate>
</representation>
<representation mimetype="video/mp4" codecs="avc1.64001e" bandwidth="227233" width="640" height="360" framerate="24000/1001">
<segmenttemplate timescale="24000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="1">
<segmenttimeline>
<s t="0" d="130130"></s>
<s d="250250"></s>
<s d="180180"></s>
<s d="50050"></s>
</segmenttimeline>
</segmenttemplate>
</representation>
<representation mimetype="video/mp4" codecs="avc1.64001f" bandwidth="616878" width="1280" height="720" framerate="24000/1001">
<segmenttemplate timescale="24000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="1">
<segmenttimeline>
<s t="0" d="130130"></s>
<s d="250250"></s>
<s d="180180"></s>
<s d="50050"></s>
</segmenttimeline>
</segmenttemplate>
</representation>
</adaptationset>
<adaptationset contenttype="video" segmentalignment="true" bitstreamswitching="true" lang="und">
<representation mimetype="video/mp4" codecs="vp09.00.11.08" bandwidth="200000" width="320" height="180" framerate="24000/1001">
<segmenttemplate timescale="24000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="1">
<segmenttimeline>
<s t="0" d="128128" r="3"></s>
<s d="98098"></s>
</segmenttimeline>
</segmenttemplate>
</representation>
<representation mimetype="video/mp4" codecs="vp09.00.21.08" bandwidth="200000" width="640" height="360" framerate="24000/1001">
<segmenttemplate timescale="24000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="1">
<segmenttimeline>
<s t="0" d="128128" r="3"></s>
<s d="98098"></s>
</segmenttimeline>
</segmenttemplate>
</representation>
<representation mimetype="video/mp4" codecs="vp09.00.31.08" bandwidth="200000" width="1280" height="720" framerate="24000/1001">
<segmenttemplate timescale="24000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="1">
<segmenttimeline>
<s t="0" d="128128" r="3"></s>
<s d="98098"></s>
</segmenttimeline>
</segmenttemplate>
</representation>
</adaptationset>
<adaptationset contenttype="audio" segmentalignment="true" bitstreamswitching="true" lang="eng">
<representation mimetype="audio/mp4" codecs="mp4a.40.2" bandwidth="128000" audiosamplingrate="44100">
<audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"></audiochannelconfiguration>
<segmenttemplate timescale="44100" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="1">
<segmenttimeline>
<s t="0" d="235520" r="3"></s>
<s d="180224"></s>
</segmenttimeline>
</segmenttemplate>
</representation>
</adaptationset>
</period>
</mpd>I am using this video, but it is coming same for all 30 sec video I have tried.
-
FFMPEG attach thumbnail to first frame of the video
31 août 2021, par MwthreexI want to attach/append an image (something like youtube) to first frame of the video, i tried this command :


ffmpeg -i video.mp4 -i image.png -map 1 -map 0 -c copy -disposition:0 attached_pic out.mp4


But it doesnt working, the first frame is not my custom image


my ffmpeg version :




ffmpeg version n4.4-80-gbf87bdd3f6-20210830 Copyright (c) 2000-2021 the FFmpeg developers




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