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• KeyError : 'video_fps' with moviepy ffmpeg

  11 août 2020, par Ethan Shoe

  I am writing a Python script to convert a video (.MP4) into an audio file (.MP3) on a Django server. To achieve this, I am using the Moviepy library but when I run the script, I get the following error :

  



  Internal Server Error: /test/
Traceback (most recent call last):
  File "C:\Users\etsho\AppData\Local\Programs\Python\Python38\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
    response = get_response(request)
  File "C:\Users\etsho\AppData\Local\Programs\Python\Python38\lib\site-packages\django\core\handlers\base.py", line 126, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "C:\Users\etsho\AppData\Local\Programs\Python\Python38\lib\site-packages\django\core\handlers\base.py", line 124, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:\Users\etsho\AppData\Local\Programs\Python\Python38\lib\site-packages\django\views\decorators\csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "C:\shoe\musicsite\main\views.py", line 29, in test
    video = VideoFileClip(os.path.join(basePath + ".mp4"))
  File "C:\Users\etsho\AppData\Local\Programs\Python\Python38\lib\site-packages\moviepy\video\io\VideoFileClip.py", line 88, in __init__
    self.reader = FFMPEG_VideoReader(filename, pix_fmt=pix_fmt,
  File "C:\Users\etsho\AppData\Local\Programs\Python\Python38\lib\site-packages\moviepy\video\io\ffmpeg_reader.py", line 34, in __init__
    self.fps = infos['video_fps']
KeyError: 'video_fps'
[15/Nov/2019 23:49:43] "POST /test/ HTTP/1.1" 500 80909


  



  There's practically no information about this error or how to solve it that I could find, so any help or insight would be much appreciated.

  



  Here is my Python script (views.py) :

  



  import pyodbc, json, pytube
from django.http import HttpResponse
from django.views.decorators.csrf import csrf_exempt
from rest_framework import parsers
import os
from moviepy.editor import *

@csrf_exempt
def test(request):
if request.method == 'POST':
    filePath = 'C:\\Users\\etsho\\Music\\'

    #retrieve url from app
    body_unicode = request.body.decode('utf-8')
    body = json.loads(body_unicode)
    videoURL = body['url']

    print("before download")

    #download youtube video
    youtube = pytube.YouTube(videoURL)
    videoTitle = youtube.title
    video = youtube.streams.filter(only_audio=True).first()
    freshDownload = video.download(filePath)

    print("after download")

    basePath, extension = os.path.splitext(freshDownload)
    video = VideoFileClip(os.path.join(basePath + ".mp4"))
    video.audio.write_audiofile(os.path.join(basePath + ".mp3"))

    print("video converted")



return HttpResponse("")


  


• Conditionally rotate portrait video if landscape with FFmeg

  12 novembre 2019, par Jules

  I need to convert only portrait videos to landscape, some video maybe landscape already.

  I need to achieve this with a shell script on a mac.

  I’ve previously managed to rotate a video with ..

  ffmpeg -i "/Users/jm/Library/Mobile Documents/com~apple~QuickTimePlayerX/Documents/output.mp4" 
  
  -strict 1 -metadata:s:v rotate="90" -codec copy "$3"

  $3 is the input file in my shell script

  I’ve found this ...

  ffmpeg -i input.m4v 2>&1 | grep rotate

  From this answer https://stackoverflow.com/a/31683689/450456

  I’m not sure how to combine the two, or have to get and use the height and width in an if statement in a shell script.

  EDIT : Info as requested

  ffmpeg -i final.mp4
  
  ffmpeg version 3.4.1 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with Apple LLVM version 9.0.0 (clang-900.0.39.2)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/3.4.1_2 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --disable-jack --enable-gpl --enable-libass --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --enable-videotoolbox --enable-openssl --disable-lzma --enable-nonfree
  
    libavutil      55. 78.100 / 55. 78.100
  
    libavcodec     57.107.100 / 57.107.100
  
    libavformat    57. 83.100 / 57. 83.100
  
    libavdevice    57. 10.100 / 57. 10.100
  
    libavfilter     6.107.100 /  6.107.100
  
    libavresample   3.  7.  0 /  3.  7.  0
  
    libswscale      4.  8.100 /  4.  8.100
  
    libswresample   2.  9.100 /  2.  9.100
  
    libpostproc    54.  7.100 / 54.  7.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'final.mp4':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 0
  
      compatible_brands: qt  
  
      creation_time   : 2019-11-12T20:45:27.000000Z
  
    Duration: 00:00:24.36, start: 0.031667, bitrate: 365 kb/s
  
      Stream #0:0(und): Video: hevc (Main 10) (hvc1 / 0x31637668), yuv420p10le(tv, smpte170m/unknown/unknown), 1242x2688, 365 kb/s, 1.73 fps, 600 tbr, 600 tbn, 600 tbc (default)
  
      Metadata:
  
        creation_time   : 2019-11-12T20:45:27.000000Z
  
        handler_name    : Core Media Data Handler
  
        encoder         : HEVC
  
  At least one output file must be specified

• ffmpeg concat video length is not the sum of durations

  9 novembre 2019, par Mason

  I’m simply trying to put some images together into a video with specific durations. I’m using the command

  ffmpeg -f concat -i concat.txt -r 30 video.mp4

  # concat.txt
  
  
  
  file capture12.png
  
  duration 1
  
  file capture57.png
  
  duration 3
  
  file capture156.png
  
  duration 7
  
  file capture234.png
  
  duration 5
  
  file capture272.png
  
  duration 3

  The output of my console is

  ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 9.1.1 (GCC) 20190807
  
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  
    libavutil      56. 31.100 / 56. 31.100
  
    libavcodec     58. 54.100 / 58. 54.100
  
    libavformat    58. 29.100 / 58. 29.100
  
    libavdevice    58.  8.100 / 58.  8.100
  
    libavfilter     7. 57.100 /  7. 57.100
  
    libswscale      5.  5.100 /  5.  5.100
  
    libswresample   3.  5.100 /  3.  5.100
  
    libpostproc    55.  5.100 / 55.  5.100
  
  Input #0, concat, from 'concat.txt':
  
    Duration: 00:00:19.00, start: 0.000000, bitrate: 0 kb/s
  
      Stream #0:0: Video: png, rgba(pc), 983x553, 25 tbr, 25 tbn, 25 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 000001b3e55c5c80] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  
  [libx264 @ 000001b3e55c5c80] profile High 4:4:4 Predictive, level 3.1, 4:4:4, 8-bit
  
  [libx264 @ 000001b3e55c5c80] 264 - core 158 r2984 3759fcb - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'video.mp4':
  
    Metadata:
  
      encoder         : Lavf58.29.100
  
      Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv444p, 983x553, q=-1--1, 30 fps, 15360 tbn, 30 tbc
  
      Metadata:
  
        encoder         : Lavc58.54.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
  frame=  629 fps=400 q=-1.0 Lsize=     124kB time=00:00:20.86 bitrate=  48.8kbits/s dup=624 drop=0 speed=13.3x
  
  video:116kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 7.050883%
  
  [libx264 @ 000001b3e55c5c80] frame I:3     Avg QP:13.09  size: 20222
  
  [libx264 @ 000001b3e55c5c80] frame P:158   Avg QP:10.80  size:   207
  
  [libx264 @ 000001b3e55c5c80] frame B:468   Avg QP:13.75  size:    53
  
  [libx264 @ 000001b3e55c5c80] consecutive B-frames:  0.8%  0.0%  0.0% 99.2%
  
  [libx264 @ 000001b3e55c5c80] mb I  I16..4: 23.0% 58.6% 18.4%
  
  [libx264 @ 000001b3e55c5c80] mb P  I16..4:  0.0%  0.0%  0.2%  P16..4:  0.1%  0.0%  0.0%  0.0%  0.0%    skip:99.7%
  
  [libx264 @ 000001b3e55c5c80] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  1.3%  0.0%  0.0%  direct: 0.0%  skip:98.7%  L0:66.5% L1:33.5% BI: 0.0%
  
  [libx264 @ 000001b3e55c5c80] 8x8 transform intra:54.0% inter:7.4%
  
  [libx264 @ 000001b3e55c5c80] coded y,u,v intra: 15.3% 0.7% 0.7% inter: 0.0% 0.0% 0.0%
  
  [libx264 @ 000001b3e55c5c80] i16 v,h,dc,p: 86% 14%  0%  0%
  
  [libx264 @ 000001b3e55c5c80] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 65%  7% 28%  0%  0%  0%  0%  0%  0%
  
  [libx264 @ 000001b3e55c5c80] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 50% 14% 14%  3%  4%  5%  4%  4%  3%
  
  [libx264 @ 000001b3e55c5c80] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 000001b3e55c5c80] ref P L0: 87.3%  6.3%  5.6%  0.8%
  
  [libx264 @ 000001b3e55c5c80] ref B L0: 45.3% 54.3%  0.4%
  
  [libx264 @ 000001b3e55c5c80] ref B L1: 99.6%  0.4%
  
  [libx264 @ 000001b3e55c5c80] kb/s:45.07

  I can see it clearly saying Duration 00:00:19.00 (as it should be) and then later saying that the final video is 00:00:20.86. How do I get these numbers to match ?