FFmpeg新手求助：如何按递增序列输入批量.ts分片文件？

Hey there! As someone new to FFmpeg and streaming tech, let's break this down clearly—covering the method you're thinking of, plus a far more efficient approach that'll save you extra work.

方法1：用FFmpeg序列输入匹配递增文件名 #

If you already have the TS files saved locally, or you're fetching them and saving with that media_[递增数] pattern, FFmpeg has built-in support for sequence-based inputs. Here's how to use it:

• Basic command (for variable-length numeric suffixes):

  ffmpeg -start_number 3482026 -i media_%d.ts -c copy output.mp4
  

  • -start_number: Sets the starting number in your sequence (matches your example media_3482026.ts)
  • %d: Acts as a placeholder for the incrementing decimal number (defaults to +1 per file, which perfectly fits your 6-second interval rule)
• If the numeric part has a fixed number of digits (like the 7-digit number in your example), use %07d to ensure FFmpeg matches any leading zeros if they exist:

  ffmpeg -start_number 3482026 -i media_%07d.ts -c copy output.mp4
  

• The -c copy flag copies video/audio streams directly without re-encoding—this is fast and preserves original quality.

方法2：更优方案——直接解析M3U8文件 #

Since you mentioned the site provides an M3U8 file where the last line points to the current TS segment, this is hands down the better approach. M3U8 is a playlist file made for streaming, and FFmpeg can automatically parse it to fetch and stitch all necessary segments:

ffmpeg -i "https://your-site-url/path/to/stream.m3u8" -c copy output.mp4

Why this is way better: #

• No manual tracking: You don't have to worry about the starting number, increment steps, or missing segments—FFmpeg reads the M3U8 to know exactly which files to pull.
• Automatic encryption handling: If the stream is DRM-protected (common on many sites), FFmpeg will often handle decryption keys referenced in the M3U8, something you'd have to manage manually with individual TS files.
• Live stream friendly: If this is a live feed where the M3U8 updates with new segments, FFmpeg will keep pulling new chunks until you stop the process (Ctrl+C)—way easier than scripting a sequence grab for live content.

Quick Tips: #

• If you run into access errors, some sites block direct FFmpeg requests—add a user-agent header with the -headers flag to mimic a browser, e.g.:

  ffmpeg -headers "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36" -i "https://your-site-url/path/to/stream.m3u8" -c copy output.mp4
  

• Avoid re-encoding unless you need to change the output format—-c copy is always faster and preserves quality.

内容的提问来源于stack exchange，提问作者Andrey Kadnikov