MP4 File Format Specification

format mp4 specifications iso
avrono picture avrono · Apr 10, 2015 · Viewed 64.5k times · Source

I am writing some code to parse MP4 files ...

Is there a free source to get documentation on the MP4 File Format Specification. So far I have only found an ISO document which I would need to purchase ISO PDF. Is MP4 Not an open standard ?

Answer

Tomer picture Tomer · Aug 2, 2015

Here's the specification of the ISO base format, and here is the MP4 file format specification, both defined as part of the ISO/IEC 14496 standard.

Also take a look at the QuickTime MP4 specification. It has a very clear explanation.

Related questions

How can I pretty-print JSON in a shell script?

Is there a (Unix) shell script to format JSON in human-readable form? Basically, I want it to transform the following: { "foo": "lorem", "bar": "ipsum" } ... into something like this: { "foo": "lorem", "bar": "ipsum" }

Read More
How do I display a decimal value to 2 decimal places?

When displaying the value of a decimal currently with .ToString(), it's accurate to like 15 decimal places, and since I'm using it to represent dollars and cents, I only want the output to be 2 decimal places. Do I use a variation …

Read More
.NET String.Format() to add commas in thousands place for a number

I want to add a comma in the thousands place for a number. String.Format()?

Read More