ffmpeg -i video.mp4 -i subtitle.srt -c:v copy -c:a copy -c:s mov_text output.mp4

ffmpeg -version

import subprocess
import os
import sys

def validate_file(file_path, file_type="file"):
    """驗(yàn)證文件是否存在"""
    if not os.path.exists(file_path):
        raise FileNotFoundError(f"{file_type.capitalize()} 文件不存在: {file_path}")
    print(f"{file_type.capitalize()} 已驗(yàn)證: {file_path}")
    return True


def merge_video_with_subtitles(video_path, srt_path, output_path):
    """使用 FFmpeg 將視頻與 SRT 字幕合并"""

    # 1. 驗(yàn)證輸入文件
    validate_file(video_path, "video")
    validate_file(srt_path, "subtitle")

    # 2. FFmpeg 指令
    ffmpeg_cmd = [
        'ffmpeg',
        '-i', video_path,     # 輸入視頻
        '-i', srt_path,       # 輸入字幕
        '-c:v', 'copy',       # 視頻無損copy
        '-c:a', 'copy',       # 音頻無損copy
        '-c:s', 'mov_text',   # 字幕轉(zhuǎn)換為 mp4 可識(shí)別格式
        '-metadata:s:s:0', 'language=chi',  # 字幕語言設(shè)置為中文
        output_path
    ]

    # 強(qiáng)制字幕按 UTF-8 解碼（避免亂碼）
    ffmpeg_cmd.insert(3, '-sub_charenc')
    ffmpeg_cmd.insert(4, 'UTF-8')

    try:
        # 3. 調(diào)用 FFmpeg 進(jìn)行處理
        result = subprocess.run(
            ffmpeg_cmd,
            check=True,
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE,
            text=True
        )
        print(f"成功生成視頻: {output_path}")
        print(result.stdout)

    except subprocess.CalledProcessError as e:
        print(f"FFmpeg 處理失敗: {e.stderr}")
        raise
    except Exception as e:
        print(f"運(yùn)行 FFmpeg 時(shí)發(fā)生異常: {e}")
        raise


def main():
    # 輸入文件路徑（可自行修改）
    video_path = r"SS.online_Gesture Drawing Practice _ 20 and 40 sec. poses_1080p.mp4"
    srt_path = r"SS.online_Gesture Drawing Practice _ 20 and 40 sec. poses_1080p.srt"
    output_path = "output.mp4"

    # 合并視頻 + 字幕
    merge_video_with_subtitles(video_path, srt_path, output_path)


if __name__ == "__main__":
    try:
        main()
    except Exception as e:
        print(f"程序錯(cuò)誤: {e}")
        sys.exit(1)

python merge.py

output.mp4

-sub_charenc UTF-8

-c:v copy -c:a copy

import json
import math
import os

for doc in os.listdir():    # 遍歷當(dāng)前文件夾的所有文件
    file = ''  # 這個(gè)變量用來保存數(shù)據(jù)
    i = 1
    if (doc[-4:] == 'json'):    # 若是json文件則進(jìn)行處理
        name = doc[:-5]     # 提取文件名
        # 將此處文件位置進(jìn)行修改，加上utf-8是為了避免處理中文時(shí)報(bào)錯(cuò)
        with open(doc, encoding='utf-8') as f:
            datas = json.load(f)  # 加載文件數(shù)據(jù)
            f.close()
        for data in datas:
            start = data['from']  # 獲取開始時(shí)間
            stop = data['to']  # 獲取結(jié)束時(shí)間
            content = data['content']  # 獲取字幕內(nèi)容
            file += '{}\n'.format(i)  # 加入序號(hào)
            hour = math.floor(start) // 3600
            minute = (math.floor(start) - hour * 3600) // 60
            sec = math.floor(start) - hour * 3600 - minute * 60
            minisec = int(math.modf(start)[0] * 100)  # 處理開始時(shí)間
            file += str(hour).zfill(2) + ':' + str(minute).zfill(2) + ':' + str(sec).zfill(2) + ',' + str(minisec).zfill(2)  # 將數(shù)字填充0并按照格式寫入
            file += ' --> '
            hour = math.floor(stop) // 3600
            minute = (math.floor(stop) - hour * 3600) // 60
            sec = math.floor(stop) - hour * 3600 - minute * 60
            minisec = abs(int(math.modf(stop)[0] * 100 - 1))  # 此處減1是為了防止兩個(gè)字幕同時(shí)出現(xiàn)
            file += str(hour).zfill(2) + ':' + str(minute).zfill(2) + ':' + str(sec).zfill(2) + ',' + str(minisec).zfill(2)
            file += '\n' + content + '\n\n'  # 加入字幕文字
            i += 1
        with open('./{}.srt'.format(name), 'w', encoding='utf-8') as f:
            f.write(file)  # 將數(shù)據(jù)寫入文件
            f.close()