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La conservation du net art au musée. Les stratégies à l’œuvre
26 mai 2011
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (91)
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MediaSPIP v0.2
21 juin 2013, parMediaSPIP 0.2 est la première version de MediaSPIP stable.
Sa date de sortie officielle est le 21 juin 2013 et est annoncée ici.
Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
Comme pour la version précédente, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...) -
Mise à disposition des fichiers
14 avril 2011, parPar défaut, lors de son initialisation, MediaSPIP ne permet pas aux visiteurs de télécharger les fichiers qu’ils soient originaux ou le résultat de leur transformation ou encodage. Il permet uniquement de les visualiser.
Cependant, il est possible et facile d’autoriser les visiteurs à avoir accès à ces documents et ce sous différentes formes.
Tout cela se passe dans la page de configuration du squelette. Il vous faut aller dans l’espace d’administration du canal, et choisir dans la navigation (...) -
MediaSPIP version 0.1 Beta
16 avril 2011, parMediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)
Sur d’autres sites (9437)
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Why i got an error with ffmpeg when i'm trying to merge 2 video file with the audio of a third video file multiple time in 1 line ?
28 août 2020, par NironI have 1 video file that i want to concat with an other video file using the audio of a third video file, and this 5 time in a line.
The only file that don't change is the first video file.
So i tried to run this command :


./ffmpeg.exe -i Video\\decompte.mp4 -i "Video\\Breaking Bad_OPENING_Opening.mp4" -i "TempVideo\\Breaking 
Bad_OPENING_Opening.mp4" -i "Video\\The 100_OPENING_Opening.mp4" -i "TempVideo\\The 
100_OPENING_Opening.mp4" -i "Video\\Stranger Things_OPENING_Opening.mp4" -i "TempVideo\\Stranger 
Things_OPENING_Opening.mp4" -i "Video\\Lucifer_OPENING_Opening.mp4" -i 
"TempVideo\\Lucifer_OPENING_Opening.mp4" -i "Video\\Black Mirror_OPENING_Opening.mp4" -i 
"TempVideo\\Black Mirror_OPENING_Opening.mp4" -filter_complex "
[0:0]scale=1280:720:force_original_aspect_ratio=1[v0]; 
[2:v]scale=1280:720:force_original_aspect_ratio=1[v2]; 
[4:v]scale=1280:720:force_original_aspect_ratio=1[v4]; 
[6:v]scale=1280:720:force_original_aspect_ratio=1[v6]; 
[8:v]scale=1280:720:force_original_aspect_ratio=1[v8]; 
[10:v]scale=1280:720:force_original_aspect_ratio=1[v10]; 
[v0][v2][1:a][v0][v4][3:a][v0][v6][5:a][v0][v8][7:a][v0][v10][9:a]concat=n=5:v=2:a=1[outv][outa]"
 -map "[outv]" -map "[outa]" 637342141280804229.mp4



But when i run this command i get an error but i don't understand why :


ffmpeg version git-2019-11-22-27c6c92 Copyright (c) 2000-2019 the FFmpeg developers
 built with gcc 9.2.1 (GCC) 20191010
 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. 36.100 / 56. 36.100
 libavcodec 58. 62.100 / 58. 62.100
 libavformat 58. 35.100 / 58. 35.100
 libavdevice 58. 9.101 / 58. 9.101
 libavfilter 7. 66.100 / 7. 66.100
 libswscale 5. 6.100 / 5. 6.100
 libswresample 3. 6.100 / 3. 6.100
 libpostproc 55. 6.100 / 55. 6.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Video\decompte.mp4':
 Metadata:
 major_brand : mp42
 minor_version : 0
 compatible_brands: mp42mp41
 creation_time : 2020-04-02T15:15:56.000000Z
 Duration: 00:00:20.00, start: 0.000000, bitrate: 475 kb/s
 Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1600x900, 468 kb/s, 25 fps, 25 tbr, 25k tbn, 50 tbc (default)
 Metadata:
 creation_time : 2020-04-02T15:15:56.000000Z
 handler_name : ?Mainconcept Video Media Handler
 encoder : AVC Coding
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'Video\Breaking Bad_OPENING_Opening.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.35.100
 Duration: 00:00:17.60, start: 0.000000, bitrate: 399 kb/s
 Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 426x240 [SAR 1:1 DAR 71:40], 275 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #1:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 127 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #2, mov,mp4,m4a,3gp,3g2,mj2, from 'TempVideo\Breaking Bad_OPENING_Opening.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.35.100
 Duration: 00:00:02.02, start: 0.000000, bitrate: 551 kb/s
 Stream #2:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 426x240 [SAR 1:1 DAR 71:40], 417 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #2:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 127 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #3, mov,mp4,m4a,3gp,3g2,mj2, from 'Video\The 100_OPENING_Opening.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.35.100
 Duration: 00:00:34.13, start: 0.000000, bitrate: 3925 kb/s
 Stream #3:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 3794 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #3:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #4, mov,mp4,m4a,3gp,3g2,mj2, from 'TempVideo\The 100_OPENING_Opening.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.35.100
 Duration: 00:00:02.02, start: 0.000000, bitrate: 6158 kb/s
 Stream #4:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 6076 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #4:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 127 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #5, mov,mp4,m4a,3gp,3g2,mj2, from 'Video\Stranger Things_OPENING_Opening.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.35.100
 Duration: 00:00:53.45, start: 0.000000, bitrate: 1015 kb/s
 Stream #5:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 881 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
 Metadata:
 handler_name : ISO Media file produced by Google Inc.
 Stream #5:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #6, mov,mp4,m4a,3gp,3g2,mj2, from 'TempVideo\Stranger Things_OPENING_Opening.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.35.100
 Duration: 00:00:02.02, start: 0.000000, bitrate: 1186 kb/s
 Stream #6:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 1058 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
 Metadata:
 handler_name : ISO Media file produced by Google Inc.
 Stream #6:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 127 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #7, mov,mp4,m4a,3gp,3g2,mj2, from 'Video\Lucifer_OPENING_Opening.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.35.100
 Duration: 00:03:24.17, start: 0.000000, bitrate: 178 kb/s
 Stream #7:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 43 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
 Metadata:
 handler_name : ISO Media file produced by Google Inc. Created on: 07/28/2020.
 Stream #7:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 126 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #8, mov,mp4,m4a,3gp,3g2,mj2, from 'TempVideo\Lucifer_OPENING_Opening.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.35.100
 Duration: 00:00:02.02, start: 0.000000, bitrate: 239 kb/s
 Stream #8:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 99 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
 Metadata:
 handler_name : ISO Media file produced by Google Inc. Created on: 07/28/2020.
 Stream #8:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 127 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Input #9, mov,mp4,m4a,3gp,3g2,mj2, from 'Video\Black Mirror_OPENING_Opening.mp4':
 Metadata:
 major_brand : mp42
 minor_version : 0
 compatible_brands: isommp42
 creation_time : 2018-03-13T16:58:18.000000Z
 Duration: 00:00:19.04, start: 0.000000, bitrate: 314 kb/s
 Stream #9:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x718 [SAR 1:1 DAR 640:359], 184 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
 Metadata:
 creation_time : 2018-03-13T16:58:18.000000Z
 handler_name : ISO Media file produced by Google Inc. Created on: 03/13/2018.
 Stream #9:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
 Metadata:
 creation_time : 2018-03-13T16:58:18.000000Z
 handler_name : ISO Media file produced by Google Inc. Created on: 03/13/2018.
Input #10, mov,mp4,m4a,3gp,3g2,mj2, from 'TempVideo\Black Mirror_OPENING_Opening.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.35.100
 Duration: 00:00:02.02, start: 0.000000, bitrate: 351 kb/s
 Stream #10:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x718 [SAR 1:1 DAR 640:359], 211 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
 Metadata:
 handler_name : ISO Media file produced by Google Inc. Created on: 03/13/2018.
 Stream #10:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 129 kb/s (default)
 Metadata:
 handler_name : ISO Media file produced by Google Inc. Created on: 03/13/2018.
[mov,mp4,m4a,3gp,3g2,mj2 @ 0000020b6fd5cb80] Invalid stream specifier: v0.
 Last message repeated 1 times
Stream specifier 'v0' in filtergraph description [0:0]scale=1280:720:force_original_aspect_ratio=1[v0]; [2:v]scale=1280:720:force_original_aspect_ratio=1[v2]; [4:v]scale=1280:720:force_original_aspect_ratio=1[v4]; [6:v]scale=1280:720:force_original_aspect_ratio=1[v6]; [8:v]scale=1280:720:force_original_aspect_ratio=1[v8]; [10:v]scale=1280:720:force_original_aspect_ratio=1[v10]; [v0][v2][1:a][v0][v4][3:a][v0][v6][5:a][v0][v8][7:a][v0][v10][9:a]concat=n=5:v=2:a=1[outv][outa] matches no streams.




Please someone can help me because i'm stuck with this.


-
Download a video from blob:https url from eventive
26 août 2020, par jjcasmarI want to download a video from eventive but the tag contains a blob url (blob :https://watch.eventive.org/**************).


I have been reading some answers to similar questions but they all assume that the video has a mp3u8 file extension, which in my case doesn't.


I have also tried to directly download that url (removing the blob :) with curl, but I obtained a html code which I cant really understand, which contains a lot of references to javascript files.


Any tip would be really helpful.


Edit :


I have been doing some more tests and I have been able to found a url to a manifest file which points apparently to the video data. I have tried to open that url using VLC and it loads some info about the video, and it even plays it, but the screen is completely black.


I have also tried to download it using ffmpeg but it gives a bunch of errors.


ffmpeg -i https://eventiveprod-usea.streaming.media.azure.net/02968382-069a-4f02-ab3b-67c0b5a8d5b7/5f427f2d65a569006ebd326c.ism/manifest\(format\=mpd-time-csf\) output.mp4



ffmpeg output


ffmpeg version n4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
 built with gcc 10.1.0 (GCC)
 configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-avisynth --enable-fontconfig --enable-gmp --enable-gnutls --enable-gpl --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libdav1d --enable-libdrm --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmfx --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librav1e --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2 --enable-libxvid --enable-nvdec --enable-nvenc --enable-omx --enable-shared --enable-version3
 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
 libswscale 5. 7.100 / 5. 7.100
 libswresample 3. 7.100 / 3. 7.100
 libpostproc 55. 7.100 / 55. 7.100
[h264 @ 0x556c1e280bc0] top block unavailable for requested intra mode
[h264 @ 0x556c1e280bc0] error while decoding MB 34 0, bytestream 41478 
[h264 @ 0x556c1e280bc0] concealing 8160 DC, 8160 AC, 8160 MV errors in I frame
[h264 @ 0x556c1e2ce440] top block unavailable for requested intra mode -1
[h264 @ 0x556c1e2ce440] error while decoding MB 34 0, bytestream 22093 
[h264 @ 0x556c1e2ce440] concealing 3600 DC, 3600 AC, 3600 MV errors in I frame
[h264 @ 0x556c1e2f9f40] top block unavailable for requested intra mode -1
[h264 @ 0x556c1e2f9f40] error while decoding MB 24 0, bytestream 15117 
[h264 @ 0x556c1e2f9f40] concealing 2040 DC, 2040 AC, 2040 MV errors in I frame
[h264 @ 0x556c1e333bc0] top block unavailable for requested intra mode -1
[h264 @ 0x556c1e333bc0] error while decoding MB 17 0, bytestream 8716 
[h264 @ 0x556c1e333bc0] concealing 920 DC, 920 AC, 920 MV errors in I frame
[aac @ 0x556c1e3745c0] channel element 2.8 is not allocated
Input #0, dash, from 'https://eventiveprod-usea.streaming.media.azure.net/02968382-069a-4f02-ab3b-67c0b5a8d5b7/5f427f2d65a569006ebd326c.ism/manifest(format=mpd-time-csf)':
 Duration: 00:21:18.00, start: 0.066000, bitrate: 0 kb/s
 Program 0 
 Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 1317 kb/s, 29.97 fps, 29.97 tbr, 10000k tbn, 59.94 tbc
 Metadata:
 variant_bitrate : 1770930
 id : 1_V_video_1
 Stream #0:1: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 686 kb/s, 29.97 fps, 29.97 tbr, 10000k tbn, 59.94 tbc
 Metadata:
 variant_bitrate : 904295
 id : 1_V_video_2
 Stream #0:2: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 960x540 [SAR 1:1 DAR 16:9], 495 kb/s, 29.97 fps, 29.97 tbr, 10000k tbn, 59.94 tbc
 Metadata:
 variant_bitrate : 572685
 id : 1_V_video_3
 Stream #0:3: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 308 kb/s, 29.97 fps, 29.97 tbr, 10000k tbn, 59.94 tbc
 Metadata:
 variant_bitrate : 301036
 id : 1_V_video_4
 Stream #0:4(en): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s
 Metadata:
 variant_bitrate : 127999
 id : 5_A_aac_eng_2_127999
Stream mapping:
 Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
 Stream #0:4 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[aac @ 0x556c1e392dc0] channel element 2.8 is not allocated
Error while decoding stream #0:4: Invalid data found when processing input 
[h264 @ 0x556c1e3da900] top block unavailable for requested intra mode 
[h264 @ 0x556c1e3da900] error while decoding MB 34 0, bytestream 41478 
[aac @ 0x556c1e392dc0] Reserved bit set. 
[aac @ 0x556c1e392dc0] Number of bands (13) exceeds limit (11). 
[h264 @ 0x556c1e3da900] concealing 8160 DC, 8160 AC, 8160 MV errors in I frame
Error while decoding stream #0:4: Invalid data found when processing input
[aac @ 0x556c1e392dc0] channel element 2.4 is not allocated 
Error while decoding stream #0:4: Invalid data found when processing input 
[aac @ 0x556c1e392dc0] Multiple frames in a packet.
...
[libx264 @ 0x5588338c2d00] frame I:1 Avg QP: 4.13 size: 421
[libx264 @ 0x5588338c2d00] frame P:32 Avg QP:14.06 size: 1216
[libx264 @ 0x5588338c2d00] frame B:96 Avg QP:20.52 size: 306
[libx264 @ 0x5588338c2d00] consecutive B-frames: 0.8% 0.0% 0.0% 99.2%
[libx264 @ 0x5588338c2d00] mb I I16..4: 100.0% 0.0% 0.0%
[libx264 @ 0x5588338c2d00] mb P I16..4: 0.6% 0.6% 0.0% P16..4: 9.4% 0.3% 0.3% 0.0% 0.0% skip:88.9%
[libx264 @ 0x5588338c2d00] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 3.7% 0.0% 0.0% direct: 0.0% skip:96.2% L0:53.5% L1:46.3% BI: 0.2%
[libx264 @ 0x5588338c2d00] 8x8 transform intra:13.0% inter:86.8%
[libx264 @ 0x5588338c2d00] coded y,uvDC,uvAC intra: 1.3% 0.8% 0.2% inter: 0.2% 0.2% 0.0%
[libx264 @ 0x5588338c2d00] i16 v,h,dc,p: 98% 0% 2% 0%
[libx264 @ 0x5588338c2d00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 33% 2% 64% 0% 0% 0% 0% 0% 0%
[libx264 @ 0x5588338c2d00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 18% 42% 3% 1% 1% 2% 2% 1%
[libx264 @ 0x5588338c2d00] i8c dc,h,v,p: 99% 0% 0% 0%
[libx264 @ 0x5588338c2d00] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x5588338c2d00] ref P L0: 86.7% 1.2% 8.8% 3.3%
[libx264 @ 0x5588338c2d00] ref B L0: 62.7% 35.4% 1.9%
[libx264 @ 0x5588338c2d00] ref B L1: 96.1% 3.9%
[libx264 @ 0x5588338c2d00] kb/s:127.70
Conversion failed!



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ffmpeg - strange timestamps after concatenation
25 août 2020, par codefoxI want to cut some scene from video to other file, but also avoid lenghty encoding. In order to do it, i have to generate two sub video files : first file with encoding from start position to nearest position with keyframe, and second file with copy stream (without encoding), from keyframe to end position. So I have two files, and then merge them using concat, and result is not ideal. first frame do not start from 0.0 sec is longer than expected. These issues do not appear, when audio stream is disabled while generating two videos.


printout :


C:\ffmpeg\x86>ffmpeg -ss 0ms -to 33ms -i C:\db\test.mp4 -profile:v baseline -y -video_track_timescale 30030 C:/db/v0.mp4 -hide_banner
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\db\test.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf57.71.100
 Duration: 00:00:09.67, start: 0.000000, bitrate: 429 kb/s
 Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p(tv, bt709), 640x360 [SAR 1:1 DAR 16:9], 323 kb/s, 30 fps, 30 tbr, 30030 tbn, 60 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 96 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Stream mapping:
 Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
 Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 03d5f100] using SAR=1/1
[libx264 @ 03d5f100] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
[libx264 @ 03d5f100] profile Constrained Baseline, level 3.0, 4:2:0, 8-bit
[libx264 @ 03d5f100] 264 - core 160 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - http://www.videolan.org/x264.html - options: cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'C:/db/v0.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.49.100
 Stream #0:0(und): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], q=-1--1, 30 fps, 30030 tbn, 30 tbc (default)
 Metadata:
 handler_name : VideoHandler
 encoder : Lavc58.97.100 libx264
 Side data:
 cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
 Metadata:
 handler_name : SoundHandler
 encoder : Lavc58.97.100 aac
frame= 1 fps=0.0 q=29.0 Lsize= 9kB time=00:00:00.03 bitrate=1994.2kbits/s speed=1.12x
video:7kB audio:1kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 16.875153%
[libx264 @ 03d5f100] frame I:1 Avg QP:26.34 size: 6797
[libx264 @ 03d5f100] mb I I16..4: 51.3% 0.0% 48.7%
[libx264 @ 03d5f100] coded y,uvDC,uvAC intra: 34.2% 43.3% 4.0%
[libx264 @ 03d5f100] i16 v,h,dc,p: 39% 21% 16% 24%
[libx264 @ 03d5f100] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 21% 17% 5% 7% 5% 8% 4% 3%
[libx264 @ 03d5f100] i8c dc,h,v,p: 58% 19% 18% 4%
[libx264 @ 03d5f100] kb/s:1631.28
[aac @ 03d80a80] Qavg: 212.419

C:\ffmpeg\x86>ffmpeg -ss 900ms -to 1100ms -i C:\db\test.mp4 -y -c copy C:/db/v1.mp4 -hide_banner
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\db\test.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf57.71.100
 Duration: 00:00:09.67, start: 0.000000, bitrate: 429 kb/s
 Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p(tv, bt709), 640x360 [SAR 1:1 DAR 16:9], 323 kb/s, 30 fps, 30 tbr, 30030 tbn, 60 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 96 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Output #0, mp4, to 'C:/db/v1.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.49.100
 Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p(tv, bt709), 640x360 [SAR 1:1 DAR 16:9], q=2-31, 323 kb/s, 30 fps, 30 tbr, 30030 tbn, 30030 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 96 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Stream mapping:
 Stream #0:0 -> #0:0 (copy)
 Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 6 fps=0.0 q=-1.0 Lsize= 23kB time=00:00:00.18 bitrate=1018.0kbits/s speed= 183x
video:19kB audio:3kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 7.228971%

C:\ffmpeg\x86>ffmpeg -f concat -i c:/db/list.txt -c copy -y c:/db/out.mp4 -hide_banner
[mov,mp4,m4a,3gp,3g2,mj2 @ 03544800] Auto-inserting h264_mp4toannexb bitstream filter
Input #0, concat, from 'c:/db/list.txt':
 Duration: N/A, start: -0.008209, bitrate: 1923 kb/s
 Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 1778 kb/s, 30 fps, 30 tbr, 30030 tbn, 60 tbc
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 144 kb/s
 Metadata:
 handler_name : SoundHandler
Output #0, mp4, to 'c:/db/out.mp4':
 Metadata:
 encoder : Lavf58.49.100
 Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], q=2-31, 1778 kb/s, 30 fps, 30 tbr, 30030 tbn, 30030 tbc
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 144 kb/s
 Metadata:
 handler_name : SoundHandler
Stream mapping:
 Stream #0:0 -> #0:0 (copy)
 Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[mov,mp4,m4a,3gp,3g2,mj2 @ 03544800] Auto-inserting h264_mp4toannexb bitstream filter
frame= 7 fps=0.0 q=-1.0 Lsize= 31kB time=00:00:00.23 bitrate=1083.9kbits/s speed=58.3x
video:26kB audio:3kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 5.516988%

C:\ffmpeg\x86>ffprobe c:\db\v0.mp4 -show_entries frame=pict_type,pkt_pts_time,pkt_duration_time -select_streams v:0 -of csv=print_section=0 -hide_banner
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'c:\db\v0.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.49.100
 Duration: 00:00:00.04, start: 0.000000, bitrate: 1815 kb/s
 Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 1778 kb/s, 30 fps, 30 tbr, 30030 tbn, 60 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 144 kb/s (default)
 Metadata:
 handler_name : SoundHandler
0.000000,0.033333,I


C:\ffmpeg\x86>ffprobe c:\db\v1.mp4 -show_entries frame=pict_type,pkt_pts_time,pkt_duration_time -select_streams v:0 -of csv=print_section=0 -hide_banner
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'c:\db\v1.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.49.100
 Duration: 00:00:00.21, start: 0.000000, bitrate: 891 kb/s
 Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p(tv, bt709), 640x360 [SAR 1:1 DAR 16:9], 765 kb/s, 30 fps, 30 tbr, 30030 tbn, 60 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 99 kb/s (default)
 Metadata:
 handler_name : SoundHandler
0.000000,0.033267,I

0.033267,0.033333,P
0.066600,0.033400,P
0.100000,0.033300,P
0.133300,0.033300,P
0.166600,0.033400,P

C:\ffmpeg\x86>ffprobe c:\db\out.mp4 -show_entries frame=pict_type,pkt_pts_time,pkt_duration_time -select_streams v:0 -of csv=print_section=0 -hide_banner
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'c:\db\out.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf58.49.100
 Duration: 00:00:00.26, start: 0.000000, bitrate: 984 kb/s
 Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 880 kb/s, 28.93 fps, 30 tbr, 30030 tbn, 60 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 104 kb/s (default)
 Metadata:
 handler_name : SoundHandler
0.007992,0.041991,I

0.049983,0.033267,I

0.083250,0.033333,P
0.116583,0.033400,P
0.149983,0.033300,P
0.183283,0.033300,P
0.216583,0.025408,P



How to generate these files, merge them with stream copy, and final video will start from 0.0 and have uniform frames duration ?