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Spoon - Revenge !
15 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
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My Morning Jacket - One Big Holiday
15 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
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Zap Mama - Wadidyusay ?
15 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
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David Byrne - My Fair Lady
15 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
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Beastie Boys - Now Get Busy
15 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
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Granite de l’Aber Ildut
9 septembre 2011, par
Mis à jour : Septembre 2011
Langue : français
Type : Texte
Autres articles (97)
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Qu’est ce qu’un éditorial
21 juin 2013, parEcrivez votre de point de vue dans un article. Celui-ci sera rangé dans une rubrique prévue à cet effet.
Un éditorial est un article de type texte uniquement. Il a pour objectif de ranger les points de vue dans une rubrique dédiée. Un seul éditorial est placé à la une en page d’accueil. Pour consulter les précédents, consultez la rubrique dédiée.
Vous pouvez personnaliser le formulaire de création d’un éditorial.
Formulaire de création d’un éditorial Dans le cas d’un document de type éditorial, les (...) -
Les formats acceptés
28 janvier 2010, parLes commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
ffmpeg -codecs ffmpeg -formats
Les format videos acceptés en entrée
Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
Les formats vidéos de sortie possibles
Dans un premier temps on (...) -
Keeping control of your media in your hands
13 avril 2011, parThe vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)
Sur d’autres sites (9131)
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How to hold the mpegts stream for few seconds ?
8 août 2024, par AvenHow to hold the mpegts stream for 5 seconds without changing frams's PTS ?


I tried the tsduck command as below :


aven.cheng@tgcusers-MacBook-Pro ~ % tsp -I ip 235.35.3.5:3535 -P timeshift --time 5000 -O ip 235.35.3.5:3536

* Warning: timeshift: unknown initial bitrate, discarding packets until a valid bitrate can set the buffer size


the stream of 235.35.3.5:3536 did come out 5 seconds later after i executed the above command..
But the frames' PTS of 235.35.3.5:3536 are not the same anymore. For exsample, the PTS of my target frame is 10935000 from 235.35.3.5:3535, but the PTS of my target frame has changed to 10830542 from 235.35.3.5:3536.


Is that possible to hold the stream for few seconds and also keep the PTS unchanged ? I don't necessarily have to use tsduck ; I am open to using other tools.


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FFMPEG eating up ram in railway deployment [flask app]
23 juin 2024, par Eshan DasI created a flask app , meme generator, hosting it in railway using gunicorn, i am suspecting ffmpeg is eating the most ram.....
so what i am doing is , generating a tts, and a text adding into one of the parts of the video , and then finally combining all together


from flask import Flask, request, jsonify, send_file, url_for
from moviepy.editor import VideoFileClip, ImageClip, CompositeVideoClip, AudioFileClip, concatenate_videoclips
from pydub import AudioSegment
from PIL import Image, ImageDraw, ImageFont
from gtts import gTTS
from flask_cors import CORS
import os

app = Flask(__name__)
CORS(app)
app.config['UPLOAD_FOLDER'] = 'uploads'

def generate_video(name, profile_image_path, song_path, start_time):
 first_video = VideoFileClip("first.mp4")
 second_video = VideoFileClip("second.mp4")
 third_video = VideoFileClip("third.mp4")

 #font_path = os.path.join("fonts", "arial.ttf") # Updated font path
 font_size = 70
 font = ImageFont.load_default()
 text = name
 image_size = (second_video.w, second_video.h)
 text_image = Image.new('RGBA', image_size, (0, 0, 0, 0))
 draw = ImageDraw.Draw(text_image)
 text_width, text_height = draw.textsize(text, font=font)
 text_position = ((image_size[0] - text_width) // 2, (image_size[1] - text_height) // 2)
 draw.text(text_position, text, font=font, fill="black")

 text_image_path = os.path.join(app.config['UPLOAD_FOLDER'], f"text_{name}.png")
 text_image.save(text_image_path)

 txt_clip = ImageClip(text_image_path, duration=second_video.duration)

 tts = gTTS(text=name, lang='en')
 audio_path = os.path.join(app.config['UPLOAD_FOLDER'], f"audio_{name}.wav")
 tts.save(audio_path)

 sound = AudioSegment.from_file(audio_path)
 chipmunk_sound = sound._spawn(sound.raw_data, overrides={
 "frame_rate": int(sound.frame_rate * 1.5)
 }).set_frame_rate(sound.frame_rate)

 chipmunk_audio_path = os.path.join(app.config['UPLOAD_FOLDER'], f"chipmunk_audio_{name}.wav")
 chipmunk_sound.export(chipmunk_audio_path, format="wav")

 audio_clip_second = AudioFileClip(chipmunk_audio_path)

 second_video = CompositeVideoClip([second_video, txt_clip.set_position((45, 170))])
 second_video = second_video.set_audio(audio_clip_second)

 song = AudioSegment.from_file(song_path)
 start_ms = start_time * 1000
 cropped_song = song[start_ms:start_ms + 20000]

 chipmunk_song = cropped_song._spawn(cropped_song.raw_data, overrides={
 "frame_rate": int(cropped_song.frame_rate * 1.5)
 }).set_frame_rate(cropped_song.frame_rate)

 chipmunk_song_path = os.path.join(app.config['UPLOAD_FOLDER'], f"chipmunk_song_{name}.wav")
 chipmunk_song.export(chipmunk_song_path, format="wav")

 audio_clip_third = AudioFileClip(chipmunk_song_path)
 third_video = third_video.set_audio(audio_clip_third)

 profile_image = ImageClip(profile_image_path).set_duration(first_video.duration).resize(height=first_video.h / 8).set_position((950, 500))
 first_video = CompositeVideoClip([first_video, profile_image])
 
 profile_image = ImageClip(profile_image_path).set_duration(second_video.duration).resize(height=second_video.h / 8).set_position((950, 500))
 second_video = CompositeVideoClip([second_video, profile_image])
 
 profile_image = ImageClip(profile_image_path).set_duration(third_video.duration).resize(height=third_video.h / 8).set_position((950, 500))
 third_video = CompositeVideoClip([third_video, profile_image])

 final_video = concatenate_videoclips([first_video, second_video, third_video])
 final_video = final_video.subclip(0, 10)

 output_path = os.path.join(app.config['UPLOAD_FOLDER'], f"output_{name}.mp4")
 final_video.write_videofile(output_path, codec="libx264", audio_codec='aac')

 final_video.close()
 first_video.close()
 second_video.close()
 third_video.close()
 audio_clip_second.close()
 audio_clip_third.close()

 os.remove(audio_path)
 os.remove(text_image_path)
 os.remove(chipmunk_song_path)
 os.remove(chipmunk_audio_path)
 
 return output_path

@app.route('/generate', methods=['POST'])
async def generate():
 if not os.path.exists(app.config['UPLOAD_FOLDER']):
 os.makedirs(app.config['UPLOAD_FOLDER'])

 name = request.form['name']
 start_time = float(request.form['start_time'])

 profile_image = request.files['profile_image']
 profile_image_path = os.path.join(app.config['UPLOAD_FOLDER'], profile_image.filename)
 profile_image.save(profile_image_path)

 song = request.files['song']
 song_path = os.path.join(app.config['UPLOAD_FOLDER'], song.filename)
 song.save(song_path)

 video_path = generate_video(name, profile_image_path, song_path, start_time)
 return jsonify({"video_url": url_for('uploaded_file', filename=os.path.basename(video_path))})

@app.route('/uploads/<filename>')
def uploaded_file(filename):
 path = os.path.join(app.config['UPLOAD_FOLDER'], filename)
 return send_file(path, as_attachment=True)

if __name__ == "__main__":
 if not os.path.exists(app.config['UPLOAD_FOLDER']):
 os.makedirs(app.config['UPLOAD_FOLDER'])
 app.run(host='0.0.0.0', port=5000)
</filename>

I am trying to solve this issue, any way to optimize my code , or any other alternative of ffmpeg which i can use , to reduce the ram consumption


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ffmpeg - mpegts Multicast [closed]
7 juin 2024, par Miguel DuarteI'm generating a multicast stream with this command :


ffmpeg -hwaccel_device 1 -format_code Hi50 -re -f decklink -i 'DeckLink Duo (1)' -pix_fmt yuv420p -c:v h264_nvenc -profile:v high -b:v 3500k -rc 2 -cbr true -maxrate 3500k -bufsize 7000k -c:a mp2 -b:a 192k -f mpegts "udp://239.1.1.2:5000?ttl=2&pkt_size=1316"


My problem is that if I open this stream on a device with a 100Mb/s connection, it's heavily pixelated. The same stream on a 1Gb/s device displays fine.


I have other multicast streams from our ISP and they display fine regardless of connection speed.


Has someone come across this issue ? This seems ffmpeg related.


I tried several settings, bitrates, etc. Also playing on VLC, OBS. Same result.


Version :


ffmpeg version N-111519-gefa6cec759


Thanks in advance.


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