Recherche avancée
Médias (3)
-
Elephants Dream - Cover of the soundtrack
17 octobre 2011, par
Mis à jour : Octobre 2011
Langue : English
Type : Image
-
Valkaama DVD Label
4 octobre 2011, par
Mis à jour : Février 2013
Langue : English
Type : Image
-
Publier une image simplement
13 avril 2011, par ,
Mis à jour : Février 2012
Langue : français
Type : Video
Autres articles (70)
-
Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
-
List of compatible distributions
26 avril 2011, parThe table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...) -
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir
Sur d’autres sites (9390)
-
How to quit pexpect launched ffmpeg with key q pressed
25 février 2014, par Shumani used pexpect to call ffmpeg which is a lengthy process. it took half an hour, how can i detect user has pressed q key to stop it ? just like when you press q when using ffmpeg command line tool
the ffmpeg command line is
ffmpeg -y -i url -c copy -absf aac_adtstoasc out.mp4the last line of ffmpeg output is
...
Stream mapping:
Stream #0:1 -> #0:0 (copy)
Stream #0:2 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 84 fps= 77 q=-1.0 Lsize= 184626kB time=00:00:06.96 bitrate=217120.3kbits/sthe code i have now is
reo = re.compile("""\S+\s+(?P\d+) # frame
\s\S+\s+(?P<fps>\d+) # fps
\sq=(?P<q>\S+) # q
\s\S+\s+(?P<size>\S+) # size
\stime=(?P<time>\S+) # time
\sbitrate=(?P<bitrate>[\d\.]+) # bitrate
""", re.X)
durationReo = ('(?<=Duration:\s)\S+(?=,)')
cpl = thread.compile_pattern_list([
pexpect.EOF,
reo,
durationReo
])
while True:
i = thread.expect_list(cpl, timeout=None)
if i == 0: # EOF
print "the sub process exited"
break
elif i == 1:
frame_number = thread.match.group(0)
print frame_number
print reo.search(frame_number).groups()
# thread.close
elif i == 2:
durationLine = thread.match.group(0)
print 'Duration:', durationLine
# print "something :",thread.match.group(1)
pass
</bitrate></time></size></q></fps>with this code i can already get the frame info and duration info, the ultimate goal is to create a textual progress bar with another python progressbar module. but with the ability to send the 'q' pressed signal to ffmpeg child process.
-
FFMPEG Command to convert images to svg [closed]
5 mai 2024, par themujahidkhanUsers are trying to convert images to SVG image on my website, Below I've given a link to the site, more detail on error and code that handles the conversion of media files.


You can check out the live site Here.


Steps to reproduce the error.


- 

- Upload the png file,
- Select SVG as output file
- Click convert.








It is throwing error.


Below is the code for that converts users input and gives input based on user preference.


// imports

import { createCanvas, loadImage } from "canvas";

import { Action } from "@/types";
import { FFmpeg } from "@ffmpeg/ffmpeg";
import { fetchFile } from "@ffmpeg/util";

function getFileExtension(file_name: string) {
 const regex = /(?:\.([^.]+))?$/; // Matches the last dot and everything after it
 const match = regex.exec(file_name);
 if (match && match[1]) {
 return match[1];
 }
 return ""; // No file extension found
}

function removeFileExtension(file_name: string) {
 const lastDotIndex = file_name.lastIndexOf(".");
 if (lastDotIndex !== -1) {
 return file_name.slice(0, lastDotIndex);
 }
 return file_name; // No file extension found
}

export default async function convert(
 ffmpeg: FFmpeg,
 action: Action
): Promise<any> {
 const { file, to, file_name, file_type } = action;
 const input = getFileExtension(file_name);
 const output = removeFileExtension(file_name) + "." + to;
 ffmpeg.writeFile(input, await fetchFile(file));

 // FFMPEG COMMANDS
 let ffmpeg_cmd: any = [];

 if (to === "svg") {
 ffmpeg_cmd = [
 "-i",
 input,
 "-vf",
 "scale=trunc(iw/2)*2:trunc(ih/2)*2",
 "-c:v",
 "libvpx-vp9",
 "-crf",
 "30",
 "-b:v",
 "1M",
 "-c:a",
 "libopus",
 "-b:a",
 "128k",
 output,
 ];
 } else if (to === "3gp") {
 ffmpeg_cmd = [
 "-i",
 input,
 "-r",
 "20",
 "-s",
 "352x288",
 "-vb",
 "400k",
 "-acodec",
 "aac",
 "-strict",
 "experimental",
 "-ac",
 "1",
 "-ar",
 "8000",
 "-ab",
 "24k",
 output,
 ];
 } else {
 ffmpeg_cmd = ["-i", input, output];
 }

 // execute cmd
 await ffmpeg.exec(ffmpeg_cmd);

 const data = (await ffmpeg.readFile(output)) as any;
 const blob = new Blob([data], { type: file_type.split("/")[0] });
 const url = URL.createObjectURL(blob);
 return { url, output };
}

</any>

Help appreciated, Thank You


-
Different ffmpeg result after saving to png
28 juillet 2023, par Kalev MaricqSaving images to PNG first seems to produce different ffmpeg encodes. Running this test code


from PIL import Image
import cv2
import ffmpeg
import hashlib

ffmpeg.input('test.jpg').output('testff.png').run()
cv2.imwrite('testcv.png',cv2.imread('test.jpg'))
Image.open('test.jpg').save('testpil.png')

hashes=[]
for suf in ['.jpg','ff.png','cv.png','pil.png']:
 dest='test'+suf.replace('.','')+'.mp4'
 ffmpeg.input('test'+suf).output(dest).run()
 hashes.append(hashlib.file_digest(open(dest,'rb'),'md5').hexdigest())
 
print(hashes)


I get

['a5b744a8ac0f6de9ec4de43ff737c46e'

,'ab62474f2160899e064ba24890047372'

,'baa788d5e4ef212ab610b8b5cf7772cb'

,'baa788d5e4ef212ab610b8b5cf7772cb']

As you can see, the only two that match are the cv2 and pillow conversions, and none of them match the original. In terms of file size, the results that passed to png first seem to be about 10% smaller than the direct-from-jpg result.


Why is this happening and how can I avoid changing image data until I'm ready to encode ?


Syndiquer tout le site
