Yes, within the free size limit. PRO supports much larger VOB files and parallel batch extraction.
PDF.to 读取或存储我的VOB 内容吗?
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No. The VOB video and the M4R audio output are deleted within an hour. Conversion runs in an isolated worker.
我能从多个 VOB 文件中提取音频吗?
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Yes — drop a folder of VOB videos and you will get a ZIP of M4R files back, one per source video.
M4R 将保存标签和元数据吗?
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Title, artist, and album tags are populated from the VOB container metadata when available. You can edit them after extraction with our audio-tag tool.
转换器是否对流视频 URL 工作?
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No — PDF.to converts files you upload, not third-party stream URLs. Download the VOB legally first, then upload it for M4R extraction.
Why is the M4R file much smaller than the VOB video?
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Because the video stream (typically 90%+ of file size) is discarded. Only the audio track ends up in the M4R, which is why it can drop from gigabytes to a few megabytes.
