Recherche avancée
Autres articles (109)
-
Submit bugs and patches
13 avril 2011Unfortunately a software is never perfect.
If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
You may also (...) -
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.
MediaSPIP allows for media playback on major mobile platforms with the above (...) -
De l’upload à la vidéo finale [version standalone]
31 janvier 2010, parLe chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
Upload et récupération d’informations de la vidéo source
Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)
Sur d’autres sites (5768)
-
insert audio into another audio file (eg a censor bleep)
3 avril 2019, par RedzarfI need to insert a short beep into another audio file (similar to a censorship bleep) using linux and/or php.
I’m thinking there should be some way to do it with
ffmpeg(with some combination of -t, concat, map, async, adelay, itsoffset ?) oravconvormkvmerge- but haven’t found anyone doing this. Maybe I need to do it in 2 stages somehow ?For example if I have a 60 second mp3 and want to beep out 2 seconds at 2 places the desired result would be :
0:00-0:15 from original
0:15-0:17 beep (overwrites the 2 secs of original)
0:17-0:40 from original
0:40-0:42 beep
0:42-0:60 from originalI have a 2 second beep.mp3, but can use something else instead like
-i "sine=frequency=1000:duration=2" -
FFmpeg's concat demuxer/protocol (for concatenating MP3 audio files) creates a sped up and broken output file
5 février 2020, par EmielBossI want to join, or concatenate, multiple MP3 files into one larger MP3 using FFmpeg’s concat demuxer :
ffmpeg -f concat -safe 0 -i Filelist.txt -c copy out.mp3However, the output file is sped up (with a higher pitch), and after 5 seconds of listening, the audio starts to crackle and drop out. If I click on another position on the timebar in VLC, it plays for about 5 seconds before it bugs out again. Why is this happening ?
I also tried the concat protocol :
ffmpeg -i "concat:in1.mp3|in2.mp3|etc.mp3" -c copy out.mp3and Mp3Wrap (entirely different software) :
mp3wrap out.mp3 *.mp3both with the same result. How can I solve this, preferably without re-encoding ?
-------------------------------------------------------------------------------------------------For reference, this is the specification of an input file (using MediaInfo) :
General
Complete name : in.mp3
Format : MPEG Audio
File size : 5.72 MiB
Duration : 3 min 12 s
Overall bit rate mode : Variable
Overall bit rate : 234 kb/s
Album : Rayman 3: Hoodlum Havoc (Original Soundtrack), Pt. I
Album/Performer : Plume, Fred Leonard, Laurent Parisi
Part/Position : 2
Track name : Moonlit Swamps
Track name/Position : 19
Performer : Plume, Fred Leonard, Laurent Parisi
Composer : Plume, Fred Leonard, Laurent Parisi
Genre : Soundtrack
Recorded date : 2003
Writing library : LAME3.99r
Cover : Yes
Cover description : Cover
Cover type : Cover (front)
Cover MIME : image/jpeg
Comment : MS_SwG_01ExpDark
ID3v1 Comment : MS_SwG_01ExpDark
Audio
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 3
Format settings : Joint stereo
Duration : 3 min 12 s
Bit rate mode : Variable
Bit rate : 234 kb/s
Minimum bit rate : 32.0 kb/s
Channel(s) : 2 channels
Sampling rate : 48.0 kHz
Frame rate : 41.667 FPS (1152 SPF)
Compression mode : Lossy
Stream size : 5.39 MiB (94%)
Writing library : LAME3.99r
Encoding settings : -m j -V 0 -q 0 -lowpass 24 --vbr-new -b 32And the specification of the concatenated MP3 :
General
Complete name : out.mp3
Format : MPEG Audio
File size : 131 MiB
Duration : 1 h 17 min # VLC says duration is 1:24:04 for some reason
Overall bit rate mode : Variable
Overall bit rate : 237 kb/s
Writing library : LAME3.99r
Audio
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 3
Format settings : Joint stereo
Duration : 1 h 24 min
Bit rate mode : Variable
Bit rate : 237 kb/s
Channel(s) : 2 channels
Sampling rate : 44.1 kHz
Frame rate : 41.667 FPS (1058 SPF)
Compression mode : Lossy
Stream size : 131 MiB (100%)
Writing library : LAME3.99r
Encoding settings : -m m -V 10 -q 0which has noticeably less information.
-
FFmpeg Overlay Filter Changes Source FPS
24 juin 2021, par user4134414I want to overlay a video on top of another slow-motion video.
Surprisingly, the overlay becomes also slow-motion.


I'm applying the following command :


ffmpeg
 -to 00:00:01.000 -i camera1.mp4 // original video
 -ss 00:00:02.000 -to 00:00:09.000 -i confeti.mov // overlay video
 -filter_complex '[0]setpts=3.333*PTS[s0]; [s0][1]overlay' // change FPS of original video and overlay
 -r 24 out.mp4


The output can be seen here : out.mp4


As you can see, the "confetti" overlay is slow while the original video is playing and go back to normal speed once the original video ends.


Any idea why it happens and how can it be fixed ?


Syndiquer tout le site
