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Autres articles (50)
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Support de tous types de médias
10 avril 2011Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)
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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 (...) -
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 (...)
Sur d’autres sites (10407)
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How to re-encode to rgb pixel_format properly in ffmpeg
1er février 2020, par captain_majidI’m using this command to record from multiple inputs :
ffmpeg -y
-f dshow -rtbufsize 1024M -thread_queue_size 1024 -probesize 64M -i video="screen-capture-recorder" -framerate 30
-f dshow -rtbufsize 16M -i audio="virtual-audio-capturer"
-f dshow -rtbufsize 16M -i audio="Microphone (DroidCam Virtual Audio)"
-f dshow -rtbufsize 512M -thread_queue_size 512 -probesize 50M -i video="DroidCam Source 3"
-stream_loop -1 -i ".\media\background sounds\blue.mp4"
-i ".\media\pictures\Webcam Overlay\blue_.png"
-i ".\media\pictures\Webcam Overlay\red.png"
-f gdigrab -rtbufsize 512M -thread_queue_size 512 -probesize 64M -itsoffset 0.80 -i title="NohBoard v1.2.2" -framerate 60 -draw_mouse 0
-filter_complex "
[0:v] scale=1366x768 [desktop];
[3:v] hue=s=-5, scale=240x160 [webcam];
[desktop][webcam] overlay=x=W-w-285:y=H-h-7:format=rgb [deskCam];
[4:v] format=rgba,colorchannelmixer=aa=0.5, scale=240x160 [vid];
[deskCam][vid] overlay=x=W-w-5:y=H-h-245:format=rgb [deskCamVid];
[deskCamVid][5:v] overlay=x=W-w-280:y=H-h-0:format=rgb [deskCamVidBlue];
[deskCamVidBlue][6:v] overlay=x=W-w-0:y=H-h-238:format=rgb [deskCamVidBlueRed];
[7:v] chromakey=0x00FF00:similarity=.200, scale=420x140 [kb];
[deskCamVidBlueRed][kb] overlay=x=W-w-945:y=H-h-285:format=rgb [final];
[1][2] amix [aud1]; [1][2][4] amix=inputs=3 [aud2]"
-map "[final]" -map "[aud1]" -map "[aud2]" -metadata:s:a:0 title="No Music" -metadata:s:a:1 title="All sounds" out.mkvThe problem is the colors are not as bright as I want unless adding
:format=rgb
to all overlays like seen above, but this delays my encoding a lot, also when I press ’Q’, only a small part of the video (like 1m of 3m) is produced.Also If you see any unnecessary switches or non-optimal ones, please advise.
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ffmpeg can't concat movies from two different devices
29 mars 2017, par T4ng10rI’ve got bunch of movies from two different Panasonic devices. As long as I concat movies from only ONE device - final movie is smooth.
However, when I add movie clip from second device, right after final movie ends playing movies from first device it display audio and only still images from movie clip from other device.ffmpeg -f concat -i mylist.txt -c copy final_movie.MP4
Example ffprobe :
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'S6810001.MP4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.27.100
Duration: 00:00:10.62, start: 0.021333, bitrate: 1131 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 998 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 132 kb/s (default)
Metadata:
handler_name : SoundHandleSecond device movie clip :
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'a/T00004.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.27.100
Duration: 00:00:33.18, start: 0.000000, bitrate: 1190 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 929 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, stereo, fltp, 256 kb/s (default)
Metadata:
handler_name : SoundHandler
Side data:
audio service type: mainWhy movie is still ? How to prepare it so it could be joined correctly ?
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Muxing of two audio files using ffmpeg (in C) [on hold]
8 décembre 2015, par Abhishek GuptaI need to mux two audio files to create a final audio file using
ffmpeg
. There are a lot of easy solutions available for commandline approach of doing so (e.g. How to overlay two audio files using ffmpeg).I need something written natively in C or C++ language.