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Autres articles (38)
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Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...) -
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 (...)
Sur d’autres sites (4192)
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Why mp4 can not shared on Facebook or Instagram on Android ?
8 janvier 2023, par JánosThis is the file : https://t44-post-cover.s3.eu-central-1.amazonaws.com/2e3s.mp4


When I download and try share, it fails. Why ? This is the parameters was rendered. Downloading and sharing works from iPhone to Facebook on Messenger or Instagram, but not from Android phone to Facebook on Messenger or Instagram.


What parameters
ffpmpegneed to be able to sharemp4from Android to Facebook / Instagram ?

await new Promise<void>((resolve, reject) => {
 ffmpeg()
 .setFfmpegPath(pathToFfmpeg)
 .input(`/tmp/input_${imgId}.gif`)
 .inputFormat('gif')
 .inputFPS(30)
 .input('anullsrc')
 .inputFormat('lavfi')
 .audioCodec('aac')
 .audioChannels(2)
 .audioFilters(['apad'])
 .videoCodec('libx264')
 .videoBitrate(1000)
 .videoFilters([
 'tpad=stop_mode=clone:stop_duration=2',
 'scale=trunc(iw/2)*2:trunc(ih/2)*2:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse',
 ])
 .fps(30)
 .duration(5)
 .format('mp4')
 .outputOptions([
 '-pix_fmt yuvj420p',
 '-profile:v baseline',
 '-level 3.0',
 '-crf 17',
 '-movflags +faststart',
 '-movflags frag_keyframe+empty_moov',
 ])
 .output(`/tmp/output_${imgId}.mp4`)
 .on('end', () => {
 console.log('MP4 video generated')
 resolve()
 })
 .on('error', (e) => {
 console.log(e)
 reject()
 })
 .run()
 })
</void>

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Ffmpeg command to create mp4 video sharable to Instagram, etc
5 février 2019, par Ken RothmanI’m creating an mp4 video in my Android application by combining a static 1080x1080 .png image with 24/48 .wav audio, trying to generate a file that is compatible with and can be shared to social media platforms, such as Facebook and Instagram (feed).
When I attempt to share the videos I’ve created, they load and preview in the Instagram app (tested on both Android and iOS), but after hitting the "Share" button on the final step, the UI returns to my feed and the upload progress immediately switches to
"Not Posted Yet. Try Again". If I then tap the retry button, I immediately get a dialog stating"Couldn't Post Video" "There was a problem rendering your video. If this keeps happening, you may have to use another video."I’m using
ffmpeg(via tanersener’s mobile-ffmpeg library) to do this.All of the documentation I’ve found this far does not show highly specific details for upload requirements for Instagram.
I’m using AAC for audio, and h.264 (libx264) for video.
The sample I’m using has a duration of 30 seconds. The PNG, as mentioned above, is 1080x1080.I’ve taken Android out of the picture by using cmd-line ffmpeg on my Mac with the same input files and testing many variations of parameters, none of which create an uploadable video.
I have a similar .mp4 file created by our iOS app (not using ffmpeg), which I brought over to my Android device and it uploads successfully.
I’ve also sent my .mp4 file to the iOS device and it will not upload, so it seems likely it’s an encoding issue of some sort.I have yet to find a combination of ffmpeg parameters that generate a video that can be successfully shared to Instagram.
Is there a way to get verbose logs from Instagram to have some sort of idea why it’s rejecting the files ?
This is the ffmpeg command I’ve been concentrating on :
ffmpeg -i test.wav -i test.png -c:a aac -b:a 256k -ar 44100 -c:v libx264 -b:v 5M -r 30 -pix_fmt yuv420p -preset faster -tune stillimage test.mp4I’ve tried all sorts of variations of video and audio bitrates, framerates, scaling, presets, tunes, profiles, etc. But no luck as of yet.
Does anyone have a working ffmpeg command for generating videos for Instagram ?
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Transcoding a Fast Video (think Snapchat, Instagram)
4 juin 2018, par J DOeI am very new to the video world, but have noticed social media services.. particular snapchat and instagram do a great job of getting videos to load fast even on poorer connections. I know some of this is how the videos are transcoded.
I have gathered some presets I think I should be using when transcoding with ffmpeg, but am not sure of what formats or other parts of it. I would love to hear what people think !
ffmpeg()
.input(remoteReadStream)
.outputOptions('-preset fast')
.outputOptions('-movflags +faststart')Other than that I am not entirely sure what else..
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