Why iTunes doesn't show bitrate of my videos?

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Why iTunes doesn't show bitrate of my videos?

I have lots of videos in my iTunes library. Many of them do not transfer to the iPad 2. They all have the same format: m4v.

Dimensions: HD 720p (1280 × 720)

Codecs: H.264, AC3, AAC, Subtitle.

Size: Various (1Gb to 9Gb ...)

All came from MKV videos. All videos were submitted to the same process. (Passthru)

I decided to put all the videos side by side and see what's different.

What's different is:

All the videos have Bit Rate "Unknown" iTunes does not transfer to the iPad.

A curiosity: The iPad can play any video via Home Sharing from my library.

Why "Unknown" appears in the bit rate of the video? Is there way to transfer the same to the iPad without having to be creating a version with iTunes?

iMac (27-inch Late 2009), Mac OS X (10.7.3)

Posted on Aug 13, 2013 5:18 AM

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Answer 1

Ravara16 Author

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Aug 13, 2013 5:56 AM in response to Ravara16

After many attempts I've found the answer.

When I mux the video in the application (Subler), I ignored the default H.264 profile level. For iOS devices, the maximum H.264 profile level is 3.1. That's why the iPad does not allow the import.

From 4.1 to 3.1 I did not notice loss of quality.

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Answer 2

Ravara16 Author

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Aug 13, 2013 8:00 AM in response to Ravara16

The maximum of H.264 profile level is 4.0. And, in any video, the AAC audio has to be present and active. The iPad does not support AC3 or AC-3, but Apple TV supports.

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