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• Why does Travis compiled PyInstaller bundle fail when calling local ffmpeg ?

  20 janvier 2021, par August Janse

  I am writing a Python application that uses Travis CI to bundle with PyInstaller and deploy a binary. The application runs a bundled binary of svtplay-dl* as a subprocess. svtplay-dl itself uses shutil.which()) to locate ffmpeg and run that in a subprocess.

  


  If I download the Travis build and run it on my own computer, the ffmpeg call results in an error.

  


  Built on Xenial (16.04)

  


  ERROR: Something went wrong: /usr/bin/ffmpeg: /tmp/_MEI0gRAWr/libz.so.1: version `ZLIB_1.2.9' not found (required by /usr/lib/x86_64-linux-gnu/libpng16.so.16)


  


  The error is different, however, if I get Travis to build on a different distribution :

  


  Built on Bionic (18.04)

  


  ERROR: Something went wrong: /usr/bin/ffmpeg: symbol lookup error: /usr/lib/x86_64-linux-gnu/libpangoft2-1.0.so.0: undefined symbol: FcWeightFromOpenTypeDouble


  


  Focal (20.04) succeeds without error. So do builds on my local machine. But I remain puzzled as for why the different build environments would matter. If svtplay-dl uses which, it should be enough that my local machine has ffmpeg in PATH. How can this behavior be explained ?

  


  _{*I should probably import it as a Python module instead, but that is beside the point. I only wish to know why this happens, not any workarounds.}

  


• fate : Use the correct, local path to samples for opus reference files

  12 juillet 2014, par Martin Storsjö

  fate : Use the correct, local path to samples for opus reference files
  This fixes running fate in configs where the samples are located
  
  in a different path on the target.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DH] tests/fate/opus.mak

• Is there any way to trim YouTube video without downloading it to local machine ?

  12 août 2020, par Sonu Bamniya

  I am creating an app to trim video where a user either can upload the video file or can paste YouTube URL.
I am able to make the trimmer work for upload video using FFmpeg, but for YouTube URL, firstly I need to download the video to the local machine and then trim it using FFmpeg.

  



  I am using youtube-dl NodeJS library to save the video file to locally, but the issue is as I am allowing the user to download only 15Sec video no more than that, and I have applied validation of 60m long video, yet when I get 1080p video there are two issues.

  



  1. There is no audio in the 1080p video.


  



  and

  



  2. The video is taking too long to download locally and the process is taking almost 7-8mins to complete.


  



  For the first one, I can get the audio and video separately and then merge both of them in the video, but the second one is where I am stacked.

  



  I have added a time log I can see the trimming is taking only about 3-4 seconds, but the downloading is taking too long.

  



  Is there any way to make it work faster ? Or, Is there any way I can download only that part of the video, not the full video, in any technology.

  



  I am open to using any technology until it is working faster than my current implementation.

  



  If this is something related to server configuration, please suggest which one would work better.