ffmpeg

Cannot convert .ogg file to .mp3 or other file formats

和自甴很熟 提交于 2020-12-15 04:40:05
问题 I am trying to convert ogg audio file to mp3 or other audio file formats that can be played in ios devices But ogg files are not being converted into other formats like mp3 and caf. I am testing the conversion in android device. This is my ffmpeg command arguments: Command: "ffmpeg -y -i $inputFilePath -c:a copy $outputFilePath" Both input and output filenames were surrounded with quotations [-y, -i, /data/user/0/com.musicapp/files/composer_audios/testtt ogg file.ogg, -c:a, copy, /storage

why FFMPEG process is slow?

a 夏天 提交于 2020-12-15 04:14:32
问题 I tried to process 4gb video using ffmpeg on server with 1 CPU & 2GB RAM but the command is hanged for 5 mins then starts and process very slowly. Following is the console output: Command ffmpeg -i input.mp4 -filter_complex '[0:v]trim=823.2:867.3,setpts=PTS-STARTPTS[v0];[0:v]trim=1074.1:1101.4,setpts=PTS-STARTPTS[v1];[0:v]trim=1142.2:1198.9,setpts=PTS-STARTPTS[v2];[0:v]trim=1227.9:1320.0,setpts=PTS-STARTPTS[v3];[0:v]trim=1887.1:1990.8,setpts=PTS-STARTPTS[v4];[0:v]trim=2008.1:2091.3,setpts=PTS

svg slideshow with ffmpeg [closed]

点点圈 提交于 2020-12-13 18:41:03
问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 7 years ago . Improve this question can anyone point out to me, how to make a slideshow (with ffmpeg) with svg images. The usual way, ffmpeg -i bloch_0%2d.svg bloch2.mp4 doesn't work since ffmpeg can't handle svg files obviously (Invalid data found when processing input) is there an easy way to do this? thanks 回答1: First

svg slideshow with ffmpeg [closed]

对着背影说爱祢 提交于 2020-12-13 18:39:07
问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 7 years ago . Improve this question can anyone point out to me, how to make a slideshow (with ffmpeg) with svg images. The usual way, ffmpeg -i bloch_0%2d.svg bloch2.mp4 doesn't work since ffmpeg can't handle svg files obviously (Invalid data found when processing input) is there an easy way to do this? thanks 回答1: First

How to set CONFIG_PATH in Heroku buildpack

核能气质少年 提交于 2020-12-13 11:52:25
问题 Before I elaborate on the problem, I should let you know that I've successfully installed ffmpegthumbnailer on heroku's bash (heroku run bash). I'm trying to build ffmpegthumbnailer using a custom Heroku buildpack I've written, but when I run ./configure && make install in the bin/compile buildpack file, ffmpegthumbnailer tells me that it can't find the ffmpeg libs (util, format, codec, scale) and suggest that I set the PKG_CONFIG_PATH. So I set the PKG_CONFIG_PATH and it still can't seem to

FFmpeg: How to merge all audio streams into stereo

二次信任 提交于 2020-12-13 04:55:47
问题 I have 4 audio streams in my video file. They are from 4 microphones placed at 4 different people speaking. I want to transcode to a preview file that can be listened to on headphones where everybody's voice can be heard. I have seen the -ac 2 option, but I can't tell if this will merge all the audio streams or just select the 1st two. I've also seen the amerge filter, but the docs say this will produce 4 audio channels in the output file. So I'm wondering how headphones will deal with the

Coverting webm to wav with ffmpeg

情到浓时终转凉″ 提交于 2020-12-13 03:54:56
问题 I've succesfully used ffmpeg in Python to convert mp3-files into wav so I can post them to Google Speech-To-Text. Now I have same situation with webm files and the old function I have doesn't work. It should convert the file into wav and split it into 15 second chunks. Can I do this from webm -file or do I need to convert it first into some other format? The function I've used: def convert_and_split(filename): command = ['ffmpeg', '-i', filename, '-f', 'segment', '-segment_time', '15', '-c',

Coverting webm to wav with ffmpeg

夙愿已清 提交于 2020-12-13 03:53:08
问题 I've succesfully used ffmpeg in Python to convert mp3-files into wav so I can post them to Google Speech-To-Text. Now I have same situation with webm files and the old function I have doesn't work. It should convert the file into wav and split it into 15 second chunks. Can I do this from webm -file or do I need to convert it first into some other format? The function I've used: def convert_and_split(filename): command = ['ffmpeg', '-i', filename, '-f', 'segment', '-segment_time', '15', '-c',

人工智能--语音入门篇

情到浓时终转凉″ 提交于 2020-12-12 21:27:07
前戏 一、 知识储备 1.函数 : def args kwargs def func(参数1,参数2): # def 用来定义函数及函数名,参数1和参数2就是定义时的形参,也就是将来调用函数时必须要传入的参数 变量1 = 参数1+ 参数2 return 变量1 # *args 就是 将未定义且多余的 位置参数记录在内,偷偷的告诉你,args是个元祖,里面记录着你个函数传递的多余位置参数 # **kwargs 就是 将多余的关键字参数记录在内,kwargs 其实是个dict哦,里面大概就是{"name":"python","age":1+1+1+1+1+1+18} def args_func(a,b,*args): # args 里面保存着除了ab之外的所有多余参数 print (args) # 这回知道是元组了吧 for i in args: print (i) args_func( 1,2,3,4,5,6) # 这里调用的时候1,2分别传递给a,b,那么3456就会保存在args里面哦 def kwargs_func(a, b, **kwargs): # kwargs 里面保存着除了ab之外其他关键字传入参的参数 print (kwargs) # 这回知道是字典了吧 for k, v in kwargs: print (k, v) kwargs_func( 1, 2, c=3,

4 个场景揭秘,如何低成本让容器化应用 Serverless 化?

萝らか妹 提交于 2020-12-12 15:13:27
作者 | changshuai 来源 | Serverless 公众号 FaaS 的门槛 Serverless 形态的云服务帮助开发者承担了大量复杂的扩缩容、运维、容量规划、云产品打通集成等责任,使得开发者可以专注业务逻辑、提高交付速度 (Time-to-market) ,持续优化成本。Function-as-a-Service (FaaS) 作为云上最早也是应用最广泛的 Serverless 计算形态,在几年的时间内吸引了大批开发者,逐渐建立了 Serverless 优先的选型逻辑。然而从传统应用迁移到 FaaS 在开发者体验上还面临诸多挑战: 环境不统一 :各厂商定义的交付物格式,运行环境兼容性、丰富度都不尽相同,需要开发者适配,甚至重新编译; 学习成本 :打包依赖库、构建成压缩代码包和熟悉的开发部署方式不同; 服务限制 :如代码包限制在百 MB 级别,迫使交付物代码依赖分离,加大管理和发布难度; 交付物缺乏版本管理 :格式不标准,最佳实践不统一,需要开发者自行负责; 生态不成熟 :缺少流行开源工具(如 CI/CD 流水线)的支持和集成。 另一方面,容器在可移植性和交付敏捷性上实现了颠覆式创新。围绕容器的生态沉淀非常丰富且成熟,被广泛接受使用,应用容器化正在快速成为开发和部署的事实标准。然而容器本身并没有减轻运维、扩缩容、闲置成本、和云服务集成等难题。 函数计算支持容器镜像