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H.264 maximum bitrate

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Darren Coombes
H.264 maximum bitrate
on Jan 20, 2012 at 12:56:15 am

Hi, I have been given settings to encode a video for adstream delivery here in Aus, that requires the bitrate to be 15,000 kbps or higher for a h.264 output. I use the following settings, but cannot get an output that's more than 10.9 mbps. Any help? Does QT have a maximum bitrate for h.264??

framerate: 25fps
keyframes: all
best quality: multipass
data rate: restrict to; 25000 kbps

sound: 48/16

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Jason Brown
Re: H.264 maximum bitrate
on Jan 20, 2012 at 1:23:24 am

I believe it depends on your h264 profile. The profiles have a maximum dimension and I'd guess the same is limited in regards to bit-rate.

Although I've not seen this setting accessible anywhere else than with Matrox Max settings that I use in Compressor. Maybe Episode Pro could get you there as well.

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Craig Seeman
Re: H.264 maximum bitrate
on Jan 20, 2012 at 1:36:12 am

I just delivered to Comcast with H.264 15,000kbits High Profile from Episode Pro.

Compressor 4 can do H.264 .mp4 up to 30,000kbits although Main Profile, not High. There's no High Profile option in Compressor.

Matrox MAX can target 50,000kbits.

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