拆分生产GIF，再合并成MP4

main.py

@@ -11,7 +11,8 @@ def test_build_csdn_ask_top10_tag_race():
     )
 
     output = OutputMeta(
-        path='pub/csdn_ask_top10_month.gif',
+        path='pub/csdn_ask_top10_month',
+        ext='gif',
         title='CSDN 问答标签月排行榜',
         x_label='ask.csdn.net',
         y_label='问题数',
@@ -32,7 +33,8 @@ def test_build_csdn_trend_top10_tag_race():
     )
 
     output = OutputMeta(
-        path='pub/csdn_trends_top10_month.mp4',
+        path='pub/csdn_trends_top10_month',
+        ext='gif',
         title='CSDN topN指数月排行榜',
         x_label='csdn.net/trends',
         y_label='指数',

requirements.txt

+progress==1.5
+matplotlib==3.4.2
+pandas==1.2.4
+numpy==1.19.5
+moviepy==1.0.3

src/bar_chart_race/chart.py

+import sys
 import warnings
 import platform
 import pandas as pd
 import numpy as np
+from progress.bar import IncrementalBar
 
 import matplotlib.pyplot as plt
 from matplotlib.animation import FuncAnimation
@@ -413,7 +415,7 @@ class BarChartRace:
                 i += 1
 
     def anim_func(self, i):
-        print('anim_func:', i)
+        self.bar.next(1)
         plt.xkcd(scale=1, length=100, randomness=2)
         if(platform.system() == 'Linux'):
             plt.rcParams.update({'font.family': "WenQuanYi Micro Hei"})
@@ -430,13 +432,15 @@ class BarChartRace:
         def init_func():
             self.plot_bars(0)
 
-        print('total:', len(self.df_values))
+        total_count = len(self.df_values)
+        self.bar = IncrementalBar(self.filename, max=total_count)
         interval = self.period_length / self.steps_per_period
         anim = FuncAnimation(self.fig, self.anim_func, range(len(self.df_values)),
                              init_func, interval=interval)
 
         try:
             if self.html:
+                print("@anim.to_html5_video...")
                 ret_val = anim.to_html5_video()
                 try:
                     from IPython.display import HTML
@@ -444,6 +448,7 @@ class BarChartRace:
                 except ImportError:
                     pass
             else:
+                print(f"@anim.save({self.filename})")
                 ret_val = anim.save(
                     self.filename, fps=self.fps, writer=self.writer)
         except Exception as e:
@@ -459,6 +464,7 @@ class BarChartRace:
             raise Exception(message)
         finally:
             plt.rcParams = self.orig_rcParams
+            self.bar.finish()
 
         return ret_val
 

src/common/gif.py

+import moviepy.editor as mp
+
+def concat_gif_list(gifs, output):
+    clips = []
+    for gif in gifs:
+        clips.append(mp.VideoFileClip(gif))
+    final = mp.concatenate_videoclips(clips)
+    final.write_videofile(output)
+

src/top.py

@@ -6,6 +6,7 @@ import matplotlib
 
 from src.common.path import ordered_list_json_dir
 from src.common.json import load_json, dump_json
+from src.common.gif import concat_gif_list
 from src.bar_chart_race.chart import bar_chart_race
 from dataclasses import dataclass
 
@@ -41,6 +42,7 @@ class OutputMeta:
     month_count: 绘制月份，用来调试，使用较少的月份快速查看输出效果
     '''
     path: str
+    ext: str
     title: str
     x_label: str
     y_label: str
@@ -60,6 +62,7 @@ class Top:
         self.count_field = input.count_field
 
         self.output = output.path
+        self.ext = output.ext
         self.title = output.title
         self.x_label = output.x_label
         self.y_label = output.y_label
@@ -69,7 +72,28 @@ class Top:
         self.__load_dataframe()
         # self.__exit()
         self.__config_font()
-        self.__build_race()
+
+        max_rows = self.df.shape[0]
+        i = 0
+        j = 0
+        df = self.df
+        gifs = []
+        os.makedirs(self.output, exist_ok=True)
+        while i < max_rows:
+            end = i+12
+            if end >= max_rows:
+                end = max_rows+1
+            step = end-i
+            self.df = df[i:end]
+
+            filename = os.path.join(self.output, f'{j}.{self.ext}')
+            self.__build_race(filename)
+            gifs.append(filename)
+            i += step
+            j += 1
+
+        all = f'{self.output}.mp4'
+        # concat_gif_list(gifs, all)
 
     def __load_dataframe(self):
         if self.input_type == 'json_dir':
@@ -143,10 +167,10 @@ class Top:
         else:
             matplotlib.rc("font", family='FZFangSong-Z02')
 
-    def __build_race(self):
+    def __build_race(self, filename):
         bar_chart_race(
             df=self.df,
-            filename=self.output,
+            filename=filename,
             n_bars=10,
             title=self.title,
             title_size=24,