Question 1

How do I create HLS chunks with node-video-lib?

Accepted Answer

Use FragmentListBuilder to split the movie into fragments, then HLSPacketizer to convert each fragment into MPEG-TS chunks, as demonstrated in the README example for creating MPEG-TS chunks.

Question 2

Can node-video-lib handle MP4 files with multiple audio tracks?

Accepted Answer

Yes, the Movie class has methods like audioTrack() to access tracks, but you may need to implement custom logic for handling multiple tracks, as the library focuses on low-level parsing and building.

Question 3

What's the difference between node-video-lib and fluent-ffmpeg for Node.js?

Accepted Answer

node-video-lib is a pure JavaScript library for low-level MP4/FLV control with no dependencies, while fluent-ffmpeg wraps the FFmpeg binary for broader format support but requires external installation and is less granular.

Question 4

How to extract metadata from a FLV file using node-video-lib?

Accepted Answer

Use the FLVParser.parse() method to get a Movie object, then access properties like duration, resolution, and tracks, as shown in the parsing example in the README.

Question 5

Does node-video-lib support video transcoding?

Accepted Answer

No, it does not support transcoding; it only handles parsing, building, and muxing within its supported codecs. You would need to combine it with other libraries for codec conversion.

Question 6

Is node-video-lib suitable for real-time video streaming servers?

Accepted Answer

It can generate HLS chunks, but performance may be limited for real-time use due to its JavaScript implementation; native libraries might be better for high-throughput scenarios.

Question 7

How to build an MP4 file from scratch with node-video-lib?

Accepted Answer

Parse an existing file to get a Movie object, modify it as needed, then use MP4Builder.build() with file descriptors, but creating from scratch requires manually constructing track and sample data.

node-video-lib

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