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DJ Dolores - Oslodum 2004 (includes (cc) sample of “Oslodum” by Gilberto Gil)
15 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
Autres articles (45)
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Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
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 (...) -
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 (7561)
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ffmpeg messes up delayed inputs (repeats at the beginning)
20 mars 2023, par Ralphffmpeg plays audio inputs delayed to t1, t2 etc at t=0.
If there are several inputs, then it replicates one after the other (after in0 finishes with its duration duration(in0), plays another one at t=duration(in0), etc.)


In the following example, the in0 is played at t=0.


ffmpeg -i in0.mp3 -i in1.mp3 -i in2.mp3 -filter_complex "[0]adelay=1000[delayed1];[1]adelay=2000[delayed2];[2]adelay=3000[delayed3];[delayed1][delayed2][delayed3]amix=inputs=3:duration=longest" -codec:a libmp3lame -q:a 4 output.mp3



The command performs the following : 1. The ffmpeg processes three input files (mp3). 2. The complex filter delays the inputs by 1, 2, 3 seconds input-wise. 3. amix mixes the delayed outputs together. 4. And finally, a coded transforms it into an output mp3.


Another short version : 2 delayed beeps, an finally there come 3 beeps out (@ 0, 1, 2 seconds) :


ffmpeg -i beep.mp3 -filter_complex "[0]adelay=1000[delayed1];[0]adelay=2000[delayed2];[delayed1][delayed2]amix=inputs=2:duration=longest" -codec:a libmp3lame -q:a 4 output.mp3



ffmpeg version N-110011-gf456c192d9-tessus on a Mac M1, downloaded as binary from https://evermeet.cx/ffmpeg (01.2023).


I added also a silent input file from 0 to 1 seconds without any alteration of the outcome.
I added a silent stream as input as well without improvement. E.g. :


... -filter_complex "aevalsrc=0:d=4[silence];...



Another test with another ffmpeg version 5.1 Copyright (c) 2000-2022 the FFmpeg developers built with Apple clang version 13.1.6 (clang-1316.0.21.2.5) :

ffmpeg -i beep.mp3 -filter_complex "[0]adelay=1000[delayed1];aevalsrc=0:d=5[silence];[silence][delayed1]amix=inputs=2:duration=longest" -codec:a libmp3lame -q:a 4 output.mp3

There are again 2 beeps, at 0 and 1 second.

(comment : concat solves the issue. But I want to have a flexible solution with possibly overlapping audio streams.) Thanks for giving a hint !


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hey i need to download my coaching classes but they are using hls aes 128 bit encrypted streams. i downloaded m3u8 and all .ts files and found enc key
19 mars 2023, par tinu oneI downloaded all the .ts files using a python script but it is encrypted with aes 128.i found a encryption key (supposedly) under the network tab in developer options. I ran it through ffmpeg but got an error( invalid data found while processing ). I need these classes because they are going to remove it in may 2023. i am a noob to this and may have done step wrong. Please forgive me. I would deeply appreciate anyone who will help me find a solution to this problem. Thankyou.


I downloaded all the .ts files and m3u8 file and put it inside a folder. I hosted the key file in localhost that I found under the preview tab of the network tab in developer options( it was named key/ after all and had characters which was not human readable. it also had the request URL similar to that inside the m3u8 file)because ffmpeg did not want to read the key file from my local pc. I edited the m3u8 file to access the key stored in local host and it read successfully. but it shows error( invalid data found while processing).


encryption key from preview tab I found : Ø®¢Ù¦Aä [u
request url of the key : https://classes.brilliantpala.org/api/v2.5/video_contents/42475/key/


unedited m3u8 file :


#EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:19
#EXT-X-MEDIA-SEQUENCE:0
#EXT-X-KEY:METHOD=AES-128,URI="https://classes.brilliantpala.org/api/v2.4/encryption_key/40cd559c70c241699cfcda9072c4fb42/",IV=0x00000000000000000000000000000000
#EXTINF:11.680000,
video_0.ts
#EXTINF:10.000000,
video_1.ts
#EXTINF:10.000000,
etc etc..



fetch("https://classes.brilliantpala.org/api/v2.5/video_contents/42475/key/", {
 "headers": {
 "accept": "*/*",
 "accept-language": "en-US,en;q=0.9",
 "sec-ch-ua": "\"Microsoft Edge\";v=\"111\", \"Not(A:Brand\";v=\"8\", \"Chromium\";v=\"111\"",
 "sec-ch-ua-mobile": "?0",
 "sec-ch-ua-platform": "\"Windows\"",
 "sec-fetch-dest": "empty",
 "sec-fetch-mode": "cors",
 "sec-fetch-site": "same-origin",
 "x-key": "5e5d8c5d0486a678ccd4935ecb9fa8a01b1db7327396184ab00b50573119e947"
 },
 "referrer": "https://classes.brilliantpala.org/courses/535/contents/42475/",
 "referrerPolicy": "strict-origin-when-cross-origin",
 "body": null,
 "method": "GET",
 "mode": "cors",
 "credentials": "include"
});```





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Issue with Batch File for FFmpeg Video Frame Extraction
30 septembre 2023, par Claudio MartiniIssue


[swscaler @ 0000019531bb00c0] deprecated pixel format used, make sure you did set range correctly
Output #0, image2, to 'temp_frames/frame%08d.jpg':
 Metadata:
 major_brand : mp42
 minor_version : 0
 compatible_brands: mp42mp41
 encoder : Lavf60.11.100
 Stream #0:0(eng): Video: mjpeg, yuvj420p(pc, progressive), 3840x2160 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 25 fps, 25 tbn (default)
 Metadata:
 creation_time : 2023-09-29T13:37:07.000000Z
 handler_name : ?Mainconcept Video Media Handler
 vendor_id : [0][0][0][0]
 encoder : Lavc60.26.100 mjpeg
 Side data:
 cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
[image2 @ 000001951c61b980] Could not open file : temp_frames/frame00000001.jpg
[vost#0:0/mjpeg @ 000001951c603e80] Error submitting a packet to the muxer: I/O error
[out#0/image2 @ 000001951cb8ee80] Error muxing a packet
[out#0/image2 @ 000001951cb8ee80] video:389kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
frame= 1 fps=0.0 q=1.0 Lsize=N/A time=00:00:00.24 bitrate=N/A speed=1.03x
Conversion failed!



I've noticed that using an escape code '%%' for the '%' character, as suggested for similar issues, resolves the problem :


ffmpeg -i video.mp4 -qscale:v 1 -qmin 1 -qmax 1 -vsync 0 tmp_frames/frame%%08d.jpg



However, the same issue occurs even when the command is used within a drag&drop batch file :


setlocal enabledelayedexpansion

REM Check if an MP4 file was dragged onto the script
if "%~1"=="" (
 echo Drag an MP4 file onto this script to begin frame extraction.
 pause
 exit /b
)

REM Extract frames from the MP4 file
ffmpeg -i "%~1" -qscale:v 1 -qmin 1 -qmax 1 -vsync 0 temp_frames/frame%%08d.jpg

echo Extraction complete.
pause



This is essentially the same code, but it doesn't work as expected within the batch file. Can anyone provide insight into why this issue is occurring and how to resolve it within the batch file context ?