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Médias (16)
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#7 Ambience
16 octobre 2011, par
Mis à jour : Juin 2015
Langue : English
Type : Audio
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#6 Teaser Music
16 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
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#5 End Title
16 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
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#3 The Safest Place
16 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
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#4 Emo Creates
15 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
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#2 Typewriter Dance
15 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Audio
Autres articles (50)
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Contribute to documentation
13 avril 2011Documentation is vital to the development of improved technical capabilities.
MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
To contribute, register to the project users’ mailing (...) -
Selection of projects using MediaSPIP
2 mai 2011, parThe examples below are representative elements of MediaSPIP specific uses for specific projects.
MediaSPIP farm @ Infini
The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...) -
Use, discuss, criticize
13 avril 2011, parTalk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
A discussion list is available for all exchanges between users.
Sur d’autres sites (5022)
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How do I add text and watermark to each image using FFmpeg ?
14 novembre 2023, par OlehI wrote a small code that converts several images to video using
com.arthenica:ffmpeg-kit-full:6.0-2and everything works, but I need to add text to each image and place a watermarked photo on it and I can't implement it. Could you please help me with this ?

Here is the code that converts an array of images into a video :


public void ImagesToVideo(ArrayList<string> pathList) {
 String outputVideoPath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS) + "/" + Calendar.getInstance().getTimeInMillis() + ".mp4";
 try {
 StringBuilder strCommand = new StringBuilder();

 int size = pathList.size();

 for (int i = 0; i < size; i++) {
 strCommand.append("-framerate 8 -i '")
 .append(pathList.get(i))
 .append("' ");
 }

 strCommand.append("-filter_complex \"");

 for (int i = 0; i < size; i++) {
 strCommand.append("[")
 .append(i)
 .append(":v]setpts=PTS-STARTPTS+1[v")
 .append(i)
 .append("];");
 }


 for (int i = 0; i < size; i++) {
 strCommand.append("[v")
 .append(i)
 .append("]");
 }
 strCommand.append("concat=n=")
 .append(size)
 .append(":v=1:a=0,format=yuv420p\" -r 30 -b:v 4M -preset veryfast '")
 .append(outputVideoPath)
 .append("'");
 
 FFmpegKit.executeAsync(strCommand.toString(), new FFmpegSessionCompleteCallback() {
 @Override
 public void apply(FFmpegSession session) {
 SessionState state = session.getState();
 ReturnCode returnCode = session.getReturnCode();

 // CALLED WHEN SESSION IS EXECUTED
 Log.d("IPRIPR", String.format("FFmpeg process exited with state %s and rc %s.%s", state, returnCode, session.getFailStackTrace()));
 }
 }, new LogCallback() {
 @Override
 public void apply(com.arthenica.ffmpegkit.Log log) {

 // CALLED WHEN SESSION PRINTS LOGS

 }
 }, new StatisticsCallback() {
 @Override
 public void apply(Statistics statistics) {

 }
 });

 } catch (Exception e) {
 }
 }
</string>

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FFmpeg extracts different number of frames when using -filter_complex together with the split filter
14 juin 2016, par KonstantinI am fiddling with ffmpeg, extracting jpg pictures from videos. I am splitting the input stream into two output stream with -filter_complex, because I process my videos from direct http link (scarce free space on VPS), and I don’t want to read through the whole video twice (traffic quota is also scarce). Furthermore I need two series of pitcures, one for applying some filters (fps changing, scale, unsharp, crop, scale) and then selecting from them by naked eye, and the other series being untouched (expect fps changing, and cropping the black borders), using them for furter processing after selecting from the first series. I call my ffmpeg command from Ruby script, so it contains some string interpolation / substitution in the form #{}. My working command line looked like :
ffmpeg -y -fflags +genpts -loglevel verbose -i #{url} -filter_complex "[0:v]fps=fps=#{new_fps.round(5).to_s},split=2[in1][in2];[in1]crop=iw-#{crop[0]+crop[2]}:ih-#{crop[1]+crop[3]}:#{crop[0]}:#{crop[1]},scale=#{thumb_width}:-1:flags=lanczos,unsharp,lutyuv=y=gammaval(#{gammaval})[out1];[in2]crop=iw-#{crop[0]+crop[2]}:ih-#{crop[1]+crop[3]}:#{crop[0]}:#{crop[1]}[out2]" -f #{format} -c copy #{options} -map_chapters -1 - -map '[out1]' -f image2 -q 1 %06d.jpg -map '[out2]' -f image2 -q 1 big_%06d.jpg#options is set when output is MP4, then its value is "-movflags frag_keyframe+empty_moov" so I can send it to standard output without seeking capability and uploading the stream somewhere without making huge temporary video files.
So I get two series of pictures, one of them is filtered, sharpened, the other is in fact untouched. And I also get an output stream of the video on the standard output which is handled by Open3.popen3 library connecting the output stream of the input of two other commands.Problem arise when I would like to seek in the video to a given point and omitting the streamed video output on the STDOUT. I try to apply combined seeking, fast seek before the given time code and the slow seek to the exact time code, given in floating seconds :
ffmpeg -report -y -fflags +genpts -loglevel verbose -ss #{(seek_to-seek_before).to_s} -i #{url} -ss #{seek_before.to_s} -t #{t_duration.to_s} -filter_complex "[0:v]fps=fps=#{pics_per_sec},split=2[in1][in2];[in1]crop=iw-#{crop[0]+crop[2]}:ih-#{crop[1]+crop[3]}:#{crop[0]}:#{crop[1]},scale=#{thumb_width}:-1:flags=lanczos,unsharp,lutyuv=y=gammaval(#{gammaval})[out1];[in2]crop=iw-#{crop[0]+crop[2]}:ih-#{crop[1]+crop[3]}:#{crop[0]}:#{crop[1]}[out2]" -map '[out1]' -f image2 -q 1 %06d.jpg -map '[out2]' -f image2 -q 1 big_%06d.jpgRunning this command I get the needed two series of pictures, but they contains different number of images, 233 vs. 484.
Actual values can be read from this interpolated / substituted command line :
ffmpeg -report -y -fflags +genpts -loglevel verbose -ss 1619.0443599999999 -i fabf.avi -ss 50.0 -t 46.505879999999934 -filter_complex "[0:v]fps=fps=5,split=2[in1][in2];[in1]crop=iw-0:ih-0:0:0,scale=280:-1:flags=lanczos,unsharp,lutyuv=y=gammaval(0.526316)[out1];[in2]crop=iw-0:ih-0:0:0[out2]" -map '[out1]' -f image2 -q 1 %06d.jpg -map '[out2]' -f image2 -q 1 big_%06d.jpgDetailed log can be found here : http://www.filefactory.com/file/1yih17k2hrmp/ffmpeg-20160610-223820.txt
Before last line it shows 188 duplicated frames.I also tried passing "-vsync 0" option, but didn’t help. When I generate the two series of images in two consecutive steps, with two different command lines, then no problem arises, I get same amount of pictures in both series of course. So my question would be, how can I use the later command line, generating the two series of images by only one reading / parsing of the remote video file ?
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Dissappearing characters in youtube-dl, ffmpeg, and windows
4 juin 2014, par user3407161so what happens is that if the video title has a symbol that isn’t supported by your current locale then ffmpeg won’t be able to get to that file properly.
Here’s one example
►2 HOURS BEST MELODIC DUBSTEP MIX APRIL 2013◄ ヽ( ≧ω≦)ﾉas you may or may not be able to see, lots of symbols from unicode.
The problem is that in cmd and ffmpeg, though cmd can see
►2 HOURS BEST MELODIC DUBSTEP MIX APRIL 2013◄ ヽ( ≧ω≦)ﾉffmpeg only sees
2 HOURS DUBSTEP_DRUMSTEP MIX AUGUST 2013 ヽ(≧ω≦)ﾉThis is the exact error message (i’m using youtube-dl)
[ffmpeg] Adding metadata to 'C:\Music\ToBeDone\2014-06-01\►2 HOURS DUBSTEP_DRUMSTEP MIX AUGUST 2013◄ ヽ( ≧ω≦)ﾉ.mp4'
ERROR: C:\Music\ToBeDone\2014-06-01\2 HOURS DUBSTEP_DRUMSTEP MIX AUGUST 2013 ヽ(≧ω≦)ﾉ.mp4: No such file or directory
ERROR: WARNING: unable to obtain file audio codec with ffprobeAfter some research i’ve determined that by changing the system locale you can change which symbols cmd can support.
However
ヽUsed to appear as a box in a question mark in United states locale. In japanese locale it appears as it does on your screen right now.
the problem with
◄is that even though it’s not appearing as a question mark in a box (it’s appearing as how it should be), ffmpeg (or cmd) can’t detect it properly.
(Refer back to the error message, i’ll repost it below.)
[ffmpeg] Adding metadata to 'C:\Music\ToBeDone\2014-06-01\►2 HOURS DUBSTEP_DRUMSTEP MIX AUGUST 2013◄ ヽ( ≧ω≦)ﾉ.mp4'
ERROR: C:\Music\ToBeDone\2014-06-01\2 HOURS DUBSTEP_DRUMSTEP MIX AUGUST 2013 ヽ(≧ω≦)ﾉ.mp4: No such file or directory
ERROR: WARNING: unable to obtain file audio codec with ffprobeSo as you can see, I think cmd passed on the symbol correctly to ffmpeg seeing from the adding metadata line, but when it actually does the operation ffmpeg loses
► and ◄Could this be a bug with ffmpeg ? MY workaround so far with incompatible symbols was to change the system locale, but I don’t think i can do that with these two symbols...
These are the unique characters that i need to have a locale that supports
Ö
◄ ヽ( ≧ω≦)ﾉ
( ͡° ͜ʖ ͡°)
(_≧∇≦)
†
【More info on the problem in general
https://github.com/rg3/youtube-dl/issues/2999and this is what’s going on (Batch Script)
@echo off
setlocal
cd C:\youtube-dl
set /p "var1=Enter URL: " %=% pause
if defined var1 set "var1=%var1:"=%"
set "var2=%date:/=-%"
set "var3=%%(title)s.%%(ext)s"
youtube-dl "%var1%" -ci -o "C:\Music\ToBeDone\%var2%\%var3%" -f best -x --no-mtime --add-metadata
youtube-dl "%var1%" --skip-download -ci -o "C:\Music\ToBeDone\%var2%\Thumbnail\%var3%" --write- thumbnail
youtube-dl "%var1%" --skip-download -ci -o "C:\Music\ToBeDone\%var2%\Description\%var3%" --write-description
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