MyLibrary2 のバックアップ(No.2)

私的AI研究会 >MyLibrary2

Python 私的汎用ライブラリ２ †

　適宜再利用できそうなプログラムをライブラリ化するその２

Python 私的汎用ライブラリ２
参考資料

※ 最終更新:2024/06/14　

↑

画像編集パッケージ †

↑

動画編集「my_videotool.py」 †

　「matplotlib.animation」を利用して動画編集をする

関数メソッド (パラメータ詳細はソースコード参照)

機能	関数
静止画のリサイズ	image_resize(image, size = (256, 256))
動画のリサイズ	video_resize(video, size = (256, 256))
静止画と動画 2枚の連結	merge3x1(image, video, video2 = None, interval = 30, deley = 0, pixel_size = (256,256), dpi = 64)
6枚の動画フレームを連結	merge3x2(source, interval = 30, deley = 0, pixel_size = (256,256), dpi = 64)
結果動画の表示と保存（終了処理）	save_video(ani, save_path, dispf = False)

モジュール・テスト「my_videotool.py」
・コマンドパラメータ

パラメータテスト内容

0 静止画と動画 2枚の連結

1 6枚の動画フレームを連結
```
$ python my_videotool.py {0/1/...}
```

パラメータ	テスト内容
0	静止画と動画 2枚の連結
1	6枚の動画フレームを連結

モジュール・ソースコード

▼「my_videotool.py」

# -*- coding: utf-8 -*-
##------------------------------------------
##   My Library Video Tool  Ver 0.01
##      「matplotlib」を利用した動画編集
##
##               2024.06.14 Masahiro Izutsu
##------------------------------------------
## my_videotool.py

import imageio.v2 as imageio
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation
from skimage.transform import resize

# 静止画のリサイズ
def image_resize(image, size = (256, 256)):
    image = resize(image, size)[..., :3]
    return image

# 動画のリサイズ
def video_resize(video, size = (256, 256)):
    video = [resize(frame, (256, 256))[..., :3] for frame in video]
    return video

# 静止画 と 動画 2枚 の連結
def merge3x1(image, video, video2 = None, interval = 30, deley = 0, pixel_size = (256,256), dpi = 64):
    # ピクセル → インチ変換
    x_inch = pixel_size[0] / dpi
    y_inch = pixel_size[1] / dpi

    # リサイズ
    image = image_resize(image, pixel_size)
    video = video_resize(video, pixel_size)
    if video2 is not None:
        video2 = video_resize(video2, pixel_size)

    fig = plt.figure(figsize = (x_inch * 2 + x_inch * (video2 is not None), y_inch), dpi = dpi)
    fig.subplots_adjust(left=0, right=1, bottom=0, top=1)
    ims = []
    for i in range(len(video)):
        cols = [image]
        cols.append(video[i])
        if video2 is not None:
            cols.append(video2[i])
        im = plt.imshow(np.concatenate(cols, axis=1), animated = True)
        plt.axis('off')
        ims.append([im])

    ani = animation.ArtistAnimation(fig, ims, interval=interval)
    return ani

## 6枚の動画フレームを連結
def merge3x2(source, interval = 30, deley = 0, pixel_size = (256,256), dpi = 64):
    # ピクセル → インチ変換
    x_inch = pixel_size[0] / dpi
    y_inch = pixel_size[1] / dpi

    result = []
    for file_path in source:
        video = imageio.mimread(file_path)
        result.append(video_resize(video, pixel_size))

    fig = plt.figure(figsize = (x_inch * 3, y_inch * 2), dpi = 64)
    fig.subplots_adjust(left=0, right=1, bottom=0, top=1)
    ims =[]
    for i in range(len(result[0])):
        x = np.concatenate([result[0][i], result[1][i], result[2][i]],1)
        y = np.concatenate([result[3][i], result[4][i], result[5][i]],1)
        z = np.concatenate([x, y])
        im = plt.imshow(z, animated=True)
        plt.axis('off')
        ims.append([im])

    ani = animation.ArtistAnimation(fig, ims, interval=interval)
    return ani


## 結果動画の表示と保存（終了処理）
def save_video(ani, save_path, dispf = False):
    if len(save_path) > 0:
        ani.save(save_path)
    if dispf:
        plt.show()
    plt.close()
    return

#-----Test routine-----
# $ python my_videotool.py {option:0/1/2/3...}
#
if __name__ == "__main__":
    import os, sys

    args = sys.argv
    sel = '0' if len(args) <= 1 else args[1]

    if sel == '0':
        source_image = imageio.imread('./mylib_test/04.jpg')
        driving_video = imageio.mimread('./mylib_test/2.mp4')
        generated_video = imageio.mimread('./mylib_test/04_output.mp4')

        ani = merge3x1(source_image, driving_video, generated_video)
        save_video(ani, "test_anim.mp4", True)
#        save_video(ani, "test_anim.gif")

    elif sel == '1':
        source_list = []
        source_list.append('./mylib_test/2.mp4')
        source_list.append('./mylib_test/mon_output.mp4')
        source_list.append('./mylib_test/statue-02_output.mp4')
        source_list.append('./mylib_test/04_output.mp4')
        source_list.append('./mylib_test/pic3_output.mp4')
        source_list.append('./mylib_test/f_tsuchiya_1_output.mp4')

        ani = merge3x2(source_list)
        save_video(ani, "test2_anim.mp4", True)
#        save_video(ani, "test2_anim.gif")

↑

動画編集 Tips †

↑

動画ファイルの一部を切り取る †

「ffmpeg」コマンドを使用する（例：入力動画の 450,80 から 340x340 を切り取る）
・「workspace_pylearn/learn/」下記のコマンドを実行する

ffmpeg -i 01.mp4 -ss 00:00:00.00 -t 00:00:03 -filter:v "crop=340:340:450:80" -async 1 01_video_340.mp4

▼　- log -

(py38_learn) ffmpeg -i 01.mp4 -ss 00:00:00.00 -t 00:00:03 -filter:v "crop=340:340:450:80" -async 1 01_video_340.mp4
ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 9.2.1 (GCC) 20200122
  configuration: --disable-static --enable-shared --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, mov,mp4,m4a,3gp,3g2,mj2, from '01.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 1
    compatible_brands: isommp41mp42
    creation_time   : 2022-01-28T13:08:43.000000Z
  Duration: 00:00:02.94, start: 0.000000, bitrate: 945 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1280x720 [SAR 1:1 DAR 16:9], 796 kb/s, 29.84 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
    Metadata:
      creation_time   : 2022-01-28T13:08:43.000000Z
      handler_name    : Core Media Video
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
    Metadata:
      creation_time   : 2022-01-28T13:08:43.000000Z
      handler_name    : Core Media Audio
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
-async is forwarded to lavfi similarly to -af aresample=async=1:min_hard_comp=0.100000:first_pts=0.
[libx264 @ 0000018188207ac0] using SAR=1/1
[libx264 @ 0000018188207ac0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0000018188207ac0] profile High, level 2.1, 4:2:0, 8-bit
[libx264 @ 0000018188207ac0] 264 - core 159 - 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=-2 threads=11 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 '01_video_340.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 1
    compatible_brands: isommp41mp42
    encoder         : Lavf58.29.100
    Stream #0:0(und): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 340x340 [SAR 1:1 DAR 1:1], q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc (default)
    Metadata:
      creation_time   : 2022-01-28T13:08:43.000000Z
      handler_name    : Core Media Video
      encoder         : Lavc58.54.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      creation_time   : 2022-01-28T13:08:43.000000Z
      handler_name    : Core Media Audio
      encoder         : Lavc58.54.100 aac
frame=   88 fps=0.0 q=-1.0 Lsize=     144kB time=00:00:02.94 bitrate= 400.2kbits/s speed=25.9x
video:93kB audio:46kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3.205245%
[libx264 @ 0000018188207ac0] frame I:1     Avg QP:21.58  size:  7014
[libx264 @ 0000018188207ac0] frame P:24    Avg QP:22.92  size:  2542
[libx264 @ 0000018188207ac0] frame B:63    Avg QP:26.62  size:   423
[libx264 @ 0000018188207ac0] consecutive B-frames:  1.1%  9.1%  3.4% 86.4%
[libx264 @ 0000018188207ac0] mb I  I16..4: 13.2% 72.1% 14.7%
[libx264 @ 0000018188207ac0] mb P  I16..4:  1.8%  5.9%  0.8%  P16..4: 38.3% 17.5%  7.8%  0.0%  0.0%    skip:27.8%
[libx264 @ 0000018188207ac0] mb B  I16..4:  0.1%  0.1%  0.0%  B16..8: 36.3%  3.0%  0.3%  direct: 0.6%  skip:59.6%  L0:39.1% L1:53.1% BI: 7.9%
[libx264 @ 0000018188207ac0] 8x8 transform intra:69.5% inter:78.6%
[libx264 @ 0000018188207ac0] coded y,uvDC,uvAC intra: 48.7% 66.9% 19.8% inter: 9.0% 8.2% 0.2%
[libx264 @ 0000018188207ac0] i16 v,h,dc,p: 20% 39% 24% 17%
[libx264 @ 0000018188207ac0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 14% 30%  5%  7% 10%  5%  8%  4%
[libx264 @ 0000018188207ac0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 34% 11% 12%  6% 11% 10%  5%  8%  3%
[libx264 @ 0000018188207ac0] i8c dc,h,v,p: 48% 22% 22%  7%
[libx264 @ 0000018188207ac0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000018188207ac0] ref P L0: 65.2% 16.3% 14.3%  4.2%
[libx264 @ 0000018188207ac0] ref B L0: 93.4%  5.5%  1.1%
[libx264 @ 0000018188207ac0] ref B L1: 97.3%  2.7%
[libx264 @ 0000018188207ac0] kb/s:257.87
[aac @ 0000018188276440] Qavg: 189.911

・引数

-i：動画ファイルのパス
-ss：動画のクロップスタート時刻(時間：分：秒：1/100秒)
-t：クロップ動画の長さ(時間：分：秒)
-filter:v “crop=XX:XX:XX:XX”：(クロップ画像の横サイズ:クロップ画像の縦サイズ:クロップ画像の左上角の横位置:クロップ画像の左上角の縦位置)
＊クロップ画像の左上角の横位置・縦位置は、動画の左上角を(0,0)として計算した位置
-async 1：クロップ画像保存ファイルパス

↑

動画に音を追加する †

「ffmpeg」コマンドを使用する（例：動画ファイル「drive/MyDrive/data/result/outvideo6_17.mp4」音声ファイル「drive/MyDrive/data/result/hi_audio.mp3」）
・「workspace_pylearn/learn/」で下記のコマンドを実行する

ffmpeg -i outvideo6_17.mp4 -i hi_audio.mp3 -c:v copy -c:a mp3 -map 0:v:0 -map 1:a:0 outvideo6_17_oudio.mp4

▼　- log -

(py38_learn) ffmpeg -i outvideo6_17.mp4 -i hi_audio.mp3 -c:v copy -c:a mp3 -map 0:v:0 -map 1:a:0 outvideo6_17_oudio.mp4
ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 9.2.1 (GCC) 20200122
  configuration: --disable-static --enable-shared --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, mov,mp4,m4a,3gp,3g2,mj2, from 'outvideo6_17.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.76.100
  Duration: 00:00:02.90, start: 0.000000, bitrate: 999 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 768x512, 994 kb/s, 30.30 fps, 30.30 tbr, 16k tbn, 60.61 tbc (default)
    Metadata:
      handler_name    : VideoHandler
Input #1, mp3, from 'hi_audio.mp3':
  Metadata:
    encoder         : Lavf58.76.100
  Duration: 00:00:02.95, start: 0.025057, bitrate: 128 kb/s
    Stream #1:0: Audio: mp3, 44100 Hz, stereo, fltp, 128 kb/s
    Metadata:
      encoder         : Lavc58.13
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #1:0 -> #0:1 (mp3 (mp3float) -> mp3 (libmp3lame))
Press [q] to stop, [?] for help
Output #0, mp4, to 'outvideo6_17_oudio.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.29.100
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 768x512, q=2-31, 994 kb/s, 30.30 fps, 30.30 tbr, 16k tbn, 16k tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1: Audio: mp3 (libmp3lame) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp
    Metadata:
      encoder         : Lavc58.54.100 libmp3lame
[libmp3lame @ 0000025df4091f80] Trying to remove 1152 samples, but the queue is empty
frame=   88 fps=0.0 q=-1.0 Lsize=     403kB time=00:00:02.92 bitrate=1127.6kbits/s speed=98.3x
video:353kB audio:46kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.002753%

・この方法で合成した mp4 ファイルは Webサーバーによる配信では表示できない（コーデック未対応？）

下記 Webサービスの利用が簡単！
→ ビデオに音楽を追加 - 無料でビデオにオーディオを追加

↑

動画のサイズを変更する †

「ffmpeg」コマンドを使用する
・「workspace_pylearn/learn/」で下記のコマンドを実行する（例：入力動画を 256x256 サイズに変換）

ffmpeg -i 01_video_340.mp4 -s 256:256 -q 2 01_video_256.mp4

▼　- log -

(py38_learn) ffmpeg -i 01_video_340.mp4 -s 256:256 -q 2 01_video_256.mp4
ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 9.2.1 (GCC) 20200122
  configuration: --disable-static --enable-shared --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, mov,mp4,m4a,3gp,3g2,mj2, from '01_video_340.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.29.100
  Duration: 00:00:02.97, start: 0.000000, bitrate: 396 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 340x340 [SAR 1:1 DAR 1:1], 259 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
    Metadata:
      handler_name    : Core Media Video
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      handler_name    : Core Media Audio
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 00000266fd448740] -qscale is ignored, -crf is recommended.
[libx264 @ 00000266fd448740] using SAR=1/1
[libx264 @ 00000266fd448740] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 00000266fd448740] profile High, level 1.3, 4:2:0, 8-bit
[libx264 @ 00000266fd448740] 264 - core 159 - 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=-2 threads=8 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 '01_video_256.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.29.100
    Stream #0:0(und): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 256x256 [SAR 1:1 DAR 1:1], q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc (default)
    Metadata:
      handler_name    : Core Media Video
      encoder         : Lavc58.54.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      handler_name    : Core Media Audio
      encoder         : Lavc58.54.100 aac
frame=   88 fps=0.0 q=-1.0 Lsize=     122kB time=00:00:02.94 bitrate= 339.8kbits/s speed=  40x
video:56kB audio:62kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3.780259%
[libx264 @ 00000266fd448740] frame I:1     Avg QP:21.81  size:  4763
[libx264 @ 00000266fd448740] frame P:27    Avg QP:23.32  size:  1479
[libx264 @ 00000266fd448740] frame B:60    Avg QP:25.73  size:   203
[libx264 @ 00000266fd448740] consecutive B-frames:  2.3% 18.2%  6.8% 72.7%
[libx264 @ 00000266fd448740] mb I  I16..4: 18.8% 68.8% 12.5%
[libx264 @ 00000266fd448740] mb P  I16..4:  1.1%  2.3%  0.4%  P16..4: 37.9% 24.7% 11.1%  0.0%  0.0%    skip:22.5%
[libx264 @ 00000266fd448740] mb B  I16..4:  0.0%  0.1%  0.0%  B16..8: 35.2%  3.7%  0.3%  direct: 0.3%  skip:60.5%  L0:36.0% L1:55.3% BI: 8.7%
[libx264 @ 00000266fd448740] 8x8 transform intra:64.7% inter:72.3%
[libx264 @ 00000266fd448740] coded y,uvDC,uvAC intra: 51.0% 72.2% 30.2% inter: 10.0% 8.9% 0.3%
[libx264 @ 00000266fd448740] i16 v,h,dc,p: 23% 35% 18% 24%
[libx264 @ 00000266fd448740] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 12% 27%  6%  9% 12%  6% 11%  5%
[libx264 @ 00000266fd448740] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 20% 10%  9% 11% 10%  8%  6%  5%
[libx264 @ 00000266fd448740] i8c dc,h,v,p: 56% 20% 18%  6%
[libx264 @ 00000266fd448740] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 00000266fd448740] ref P L0: 66.0% 16.2% 13.3%  4.5%
[libx264 @ 00000266fd448740] ref B L0: 94.6%  4.8%  0.6%
[libx264 @ 00000266fd448740] ref B L1: 98.0%  2.0%
[libx264 @ 00000266fd448740] kb/s:155.03
[aac @ 00000266ff1fdcc0] Qavg: 236.000

↑

YouTube 動画をダウンロードする †

パッケージをインストール
```
(py38_gan) PS > pip install yt-dlp
```

モジュール・ソースコード

▼「ytb_down.py」

# YouTube ダウンロード
#   2023.11.18
# ytb_down.py
# ffmpeg yt-dlp
#    test:    opt = ['https://www.youtube.com/watch?v=7G0ovtPqHnI']
#
# 【簡単便利】pythonからYouTubeを高画質でdownloadするぞ！by Windows
# https://resanaplaza.com/2023/04/02/%E3%80%90%E7%B0%A1%E5%8D%98%E4%BE%BF%E5%88%A9%E3%80%91python%E3%81%8B%E3%82%89youtube%E3%82%92%E9%AB%98%E7%94%BB%E8%B3%AA%E3%81%A7download%E3%81%99%E3%82%8B%E3%81%9E%EF%BC%81by-windows/

from yt_dlp import YoutubeDL

def ytb_download(option):
    ydl = YoutubeDL()
    result = ydl.download(option)
    return result

if __name__ == "__main__":
    import sys

    opt = []
    args = sys.argv
    for n in range(len(args)):
        print(n, args[n])
        if n >= 1:
            opt.append(args[n])

    if len(opt) == 0:
        print('Please input potion parameter !!')

    print(opt)

    result = ytb_download(opt)

ダウンロードする YouTube 動画のURL を右クリックでコピーしておく

コマンドラインにペーストして実行する（ローカルマシン py38_learn 仮想環境）

python ytb_down.py 'https://youtu.be/cZM3o5KWLKQ'

▼　- log -

(py38_learn) python ytb_down.py 'https://youtu.be/cZM3o5KWLKQ'
0 ytb_down.py
1 https://youtu.be/cZM3o5KWLKQ
['https://youtu.be/cZM3o5KWLKQ']
[youtube] Extracting URL: https://youtu.be/cZM3o5KWLKQ
[youtube] cZM3o5KWLKQ: Downloading webpage
[youtube] cZM3o5KWLKQ: Downloading ios player API JSON
[youtube] cZM3o5KWLKQ: Downloading android player API JSON
WARNING: [youtube] YouTube said: ERROR - Precondition check failed.
WARNING: [youtube] HTTP Error 400: Bad Request. Retrying (1/3)...
[youtube] cZM3o5KWLKQ: Downloading android player API JSON
WARNING: [youtube] YouTube said: ERROR - Precondition check failed.
WARNING: [youtube] HTTP Error 400: Bad Request. Retrying (2/3)...
[youtube] cZM3o5KWLKQ: Downloading android player API JSON
WARNING: [youtube] YouTube said: ERROR - Precondition check failed.
WARNING: [youtube] HTTP Error 400: Bad Request. Retrying (3/3)...
[youtube] cZM3o5KWLKQ: Downloading android player API JSON
WARNING: [youtube] YouTube said: ERROR - Precondition check failed.
WARNING: [youtube] Unable to download API page: HTTP Error 400: Bad Request (caused by <HTTPError 400: Bad Request>); please report this issue on  https://github.com/yt-dlp/yt-dlp/issues?q= , filling out the appropriate issue template. Confirm you are on the latest version using  yt-dlp -U
[youtube] cZM3o5KWLKQ: Downloading m3u8 information
[info] cZM3o5KWLKQ: Downloading 1 format(s): 248+251
[download] Destination: 花王 セグレタ 「肌のように、髪を愛そう。」篇　30秒 CM 柴咲コウ [cZM3o5KWLKQ].f248.webm
[download] 100% of    4.96MiB in 00:00:00 at 34.11MiB/s
[download] Destination: 花王 セグレタ 「肌のように、髪を愛そう。」篇　30秒 CM 柴咲コウ [cZM3o5KWLKQ].f251.webm
[download] 100% of  495.41KiB in 00:00:00 at 10.58MiB/s
[Merger] Merging formats into "花王 セグレタ 「肌のように、髪を愛そう。」篇　30秒 CM 柴咲コウ [cZM3o5KWLKQ].webm"
Deleting original file 花王 セグレタ 「肌のように、髪を愛そう。」篇　30秒 CM 柴咲コウ [cZM3o5KWLKQ].f251.webm (pass -k to keep)
Deleting original file 花王 セグレタ 「肌のように、髪を愛そう。」篇　30秒 CM 柴咲コウ [cZM3o5KWLKQ].f248.webm (pass -k to keep)

↑

更新履歴 †

2024/06/14 初版

↑

参考資料 †

matplotlib

First Order Motion Model