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Exemple de boutons d’action pour une collection collaborative
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Mis à jour : Mars 2013
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Autres articles (99)
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MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
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Sur d’autres sites (7044)
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avcodec/dvbsubdec : support returning exact end times
22 juin 2014, par Anshul Maheshwari -
Filter concat has an unconnected output while Video concatenation in ffmpeg wrapper in java
28 février 2024, par ThorI am trying to stitch variable number of videos using ffmpeg wrapper.


I have this code :


private void videoStich(List<string> videoPaths){
 FFmpeg ffmpeg = null;
 FFprobe ffprobe=null;
 String stitchedOutputPath = outputFolder + "/stitched_output.mp4";

 try {
 ffmpeg = new FFmpeg();
 ffprobe = new FFprobe();
 } catch (IOException e) {
 throw new RuntimeException(e);
 }


 FFmpegBuilder builder = new FFmpegBuilder();

 for (int i = 0; i < videoPaths.size(); i++) {
 String videoPath = videoPaths.get(i);
 builder.addInput(videoPath);
 }

 // Add complex filter for concatenation
 StringBuilder complexFilter = new StringBuilder();
 for (int i = 0; i < videoPaths.size(); i++) {
 complexFilter.append("[").append(i).append(":v][").append(i).append(":a]");
// if (i < videoPaths.size() - 1) {
// complexFilter.append("[");
// }
 }
 complexFilter.append("concat=n=").append(videoPaths.size()).append(":v=1:a=1[v][a]");

 builder.setComplexFilter(complexFilter.toString())
 .addOutput(stitchedOutputPath)
 .setFormat("mp4")
 .done();

 FFmpegExecutor executor = new FFmpegExecutor(ffmpeg, ffprobe);
 executor.createJob(builder).run();
 }
</string>

but getting this error :


2024-02-28T16:30:53.033+05:30 INFO 4711 --- [sample_project] [pool-3-thread-1] net.bramp.ffmpeg.RunProcessFunction : ffmpeg -version
2024-02-28T16:30:53.126+05:30 INFO 4711 --- [sample_project] [pool-3-thread-1] net.bramp.ffmpeg.RunProcessFunction : ffmpeg -y -v error -i src/main/resources/cutted_videos/0_trimmed.mp4 -i src/main/resources/cutted_videos/1_trimmed.mp4 -filter_complex [0:v][0:a][1:v][1:a]concat=n=2:v=1:a=1[v][a] -f mp4 src/main/resources/cutted_videos/stitched_output.mp4
Filter concat has an unconnected output
java.lang.RuntimeException: java.io.IOException: ffmpeg returned non-zero exit status. Check stdout.


I have been trying to fix this since a long time and didn't find any issue with the filter, it is looking good to me. Can anyone help me with it ?


EDIT :
I found that when I use this command in terminal :


ffmpeg -i in1.mp4 -i in2.mp4\
 -filter_complex "[0:v] [0:a] [1:v] [1:a] \
concat=n=2:v=1:a=1 [v] [a]" \
 -f mp4 output_test5.mp4


it didn ;t work
while when i used this :


ffmpeg -i in1.mp4 -i in2.mp4\
 -filter_complex "[0:v] [0:a] [1:v] [1:a] \
concat=n=2:v=1:a=1 [v] [a]" \
 -f mp4 -map "[v]" -map "[a]" output_test4.mp4


it worked. I think i need to add -map "[v]" -map "[a]" somehow in the code.


but when i try to add :
builder.setComplexFilter(complexFilter.toString())
.addOutput(stitchedOutputPath)
.setFormat("mp4")
.map()
.done() ;


or


builder.setComplexFilter(complexFilter.toString())
.addOutput(stitchedOutputPath)
.setFormat("mp4")
.setMap()
.done() ;


both .set() or setMap() doesn't exist. What to do, how to do ?


-
FFmpeg "Non-monotonous DTS in output stream" error when processing video from Safari's MediaRecorder
17 juillet 2024, par HackermonI'm recording a video stream in Safari with
MediaRecorder, then sending it to a remote server which then uses ffmpeg to reencode the video. When reencoding with FFmpeg, I get a lot of warnings and the final video is broken, frame are glitching and out of sync but the audio sounds fine.

Here's my MediaRecorder script :


const camera = await navigator.mediaDevices.getUserMedia({ audio: true, video: true });
const recorder = new MediaRecorder(camera, {
 mimeType: 'video/mp4', // Safari only supports MP4
 bitsPerSecond: 1_000_000,
});

recorder.ondataavailable = async ({ data: blob }) => {
 // open contents in new tab
 var fileURL = URL.createObjectURL(file);
 window.open(fileURL, '_blank');
};

recorder.start();
setTimeout(() => recorder.stop(), 5000);


I download the video blob from Safari and use this command to reencode it :


ffmpeg -i ./blob.mp4 -preset ultrafast -strict -2 -threads 10 -c copy ./output.mp4


Logs :


ffmpeg version 4.2.7-0ubuntu0.1 Copyright (c) 2000-2022 the FFmpeg developers
 built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
 configuration: --prefix=/usr --extra-version=0ubuntu0.1 --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-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --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-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --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-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
 libavutil 56. 31.100 / 56. 31.100
 libavcodec 58. 54.100 / 58. 54.100
 libavformat 58. 29.100 / 58. 29.100
 libavdevice 58. 8.100 / 58. 8.100
 libavfilter 7. 57.100 / 7. 57.100
 libavresample 4. 0. 0 / 4. 0. 0
 libswscale 5. 5.100 / 5. 5.100
 libswresample 3. 5.100 / 3. 5.100
 libpostproc 55. 5.100 / 55. 5.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x559826616000] DTS 29 < 313 out of order
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from './chunk1.mp4':
 Metadata:
 major_brand : iso5
 minor_version : 1
 compatible_brands: isomiso5hlsf
 creation_time : 2024-07-17T14:30:47.000000Z
 Duration: 00:00:01.00, start: 0.000000, bitrate: 3937 kb/s
 Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(progressive), 640x480 [SAR 1:1 DAR 4:3], 6218 kb/s, 33.36 fps, 600 tbr, 600 tbn, 1200 tbc (default)
 Metadata:
 creation_time : 2024-07-17T14:30:47.000000Z
 handler_name : Core Media Video
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 420 kb/s (default)
 Metadata:
 creation_time : 2024-07-17T14:30:47.000000Z
 handler_name : Core Media Audio
File './safari3.mp4' already exists. Overwrite ? [y/N] Output #0, mp4, to './safari3.mp4':
 Metadata:
 major_brand : iso5
 minor_version : 1
 compatible_brands: isomiso5hlsf
 encoder : Lavf58.29.100
 Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(progressive), 640x480 [SAR 1:1 DAR 4:3], q=2-31, 6218 kb/s, 33.36 fps, 600 tbr, 19200 tbn, 600 tbc (default)
 Metadata:
 creation_time : 2024-07-17T14:30:47.000000Z
 handler_name : Core Media Video
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 420 kb/s (default)
 Metadata:
 creation_time : 2024-07-17T14:30:47.000000Z
 handler_name : Core Media Audio
Stream mapping:
 Stream #0:0 -> #0:0 (copy)
 Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[mp4 @ 0x559826644340] Non-monotonous DTS in output stream 0:0; previous: 10016, current: 928; changing to 10017. This may result in incorrect timestamps in the output file.
[mp4 @ 0x559826644340] Non-monotonous DTS in output stream 0:0; previous: 10017, current: 1568; changing to 10018. This may result in incorrect timestamps in the output file.
[mp4 @ 0x559826644340] Non-monotonous DTS in output stream 0:0; previous: 10018, current: 2208; changing to 10019. This may result in incorrect timestamps in the output file.
...x100
frame= 126 fps=0.0 q=-1.0 Lsize= 479kB time=00:00:00.97 bitrate=4026.2kbits/s speed= 130x 
video:425kB audio:51kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.652696%


Not sure what's happening or how to fix it. This issue only happens in Safari, videos from Chrome are perfectly fine.


I've tried various flags :


-fflags +igndts
-bsf:a aac_adtstoasc
-c:v libvpx-vp9 -c:a libopus
etc


None of them seem to fix the issue.


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