Moviepy:在Heroku上运行时，书面视频文件中没有音频 [英] Moviepy: no audio in written videofile when running on heroku

问题描述

我正在用moviepy制作视频.在本地创建的最终视频文件具有音频.当我在heroku上运行相同的代码时，最终的视频没有音频.

I am making videos with moviepy. Created locally, the final videofile has audio. When I run the same code on heroku, the final video has no audio.

首先，我认为不使用heroku上的/tmp 目录可能是问题所在.我还按照建议将音频参数添加到 write_videofile .两者都没有解决问题.

First, I thought not using the /tmp directory on heroku might be the issue. I also followed advice to add audio parameters to write_videofile. Both didn't solve the problem.

我正在使用heroku ffmpeg buildpack .

I am using the heroku ffmpeg buildpack.

#Make soundtrack
soundtrack = AudioFileClip('https://storage.googleapis.com/ABC/music.mp3')
soundtrack = soundtrack.set_duration(final_clip.duration)

#Add soundtrack
final_clip = final_clip.set_audio(soundtrack)

#Write videofile
final_clip.write_videofile('tmp/video/combined_movie.mp4',
                           codec='libx264',
                           audio_codec='aac',
                           temp_audiofile='tmp/video/soundtrack-temp-audio.m4a',
                           remove_temp=False,
                           fps=10)

#Storing on google cloud
    try:
        upload_blob('ABC','tmp/video/combined_movie.mp4','tmp/video/combined_movie.mp4')

    except:
        print('error when uploading final video file to google storage.')

在控制台中看到:

Moviepy - Building video tmp/video/combined_movie.mp4.
MoviePy - Writing audio in %s
MoviePy - Done.                                                                                              
Moviepy - Writing video tmp/video/combined_movie.mp4
Moviepy - Done !                                                                                             
Moviepy - video ready tmp/video/combined_movie.mp4
Google Cloud Storage upload successful.

感谢您的帮助！

推荐答案

终于找到了解决方案！

我只是派生了相同的buildpack，并将DOWNLOAD变量更改为ffmpeg版本4.1.3(与本地主机上安装的版本相同). 只需在您的终端上运行以下命令:

I simply forked the same buildpack and changed the DOWNLOAD variable to ffmpeg version 4.1.3 (same version installed on my localhost). Just run this command on your terminal:

heroku buildpacks:add https://github.com/merwane/heroku-buildpack-ffmpeg-latest.git

这篇关于Moviepy:在Heroku上运行时，书面视频文件中没有音频的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！