ASK & DISCUSS

INDEX

Current Film Talk Producing Post Production

Query on Blu-ray disc image file size - Toast

Matthew Lawrence

3 years, 11 months ago - Matthew Lawrence

Hi,

Just wondered if anyone has any experience with Roxio Toast on the Mac. I’m looking to create a simple Blu-Ray, no menu. I exported the film from Davinci Resolve as a 1080p MP4 file and the file size is 21GB (the film is 100 mins).

My disc holds 25GB so I set “Reencoding” to “Never” in the encoding tab in Toast as I don’t want it to re-encode the file. However, the disc image it created is only 7.78 GB. I’m confused as I asked it not to re-encode.

If I adjust the Average Bit Rate and Maximum Bit Rate settings it will make the disc image file size bigger. Does this mean that Toast is re-encoding the file, despite “Reencoding” being to “Never”?

Also, does anyone have any recommendations for Average and Maximum bit rate settings so I can get the highest quality without causing playback problems?

Any help greatly appreciated.

Thanks,
Matt

Only members can post or respond to topics. LOGIN

Not a member of SP? JOIN or FIND OUT MORE

Answers older then 1 month have been hidden - you can SHOW all answers or select them individually
Answers older then 1 month are visible - you can HIDE older answers.

Madis Malgand

3 years, 11 months ago - Madis Malgand

Hi Matthew.

Making just the MP4 container file, is not actually the format that the Blu-ray disc is using. It does use the h.264 codec, however all the parameters will need to be correct in order to be compliant with the Blu-ray specs. The Toast will not be able to use your mp4 file without re-encoding it, because of this and hence you are having the re-encoded file on your final disc or disc image. To get the absolute best out of your film on the Blu-ray, it is best to encode the Blu-ray compliant file from either the Apple Pro-Res 422HQ or similar with no prior high compression applied to the file.
Best to use professional service such us our Blu-ray Authoring service as the Toast does not Author fully compliant Blu-ray disc, meaning that some players will reject it.
I do offer 10% discount on the Blu-ray authoring and duplication for members of SP.

Hope this helps.
Please contact if you do need it done professionally.

Best wishes.
Madis Malgand
www.edithouse.co.uk
info@edithouse.co.uk

Response from 3 years, 11 months ago - Madis Malgand SHOW

Matthew Lawrence

3 years, 11 months ago - Matthew Lawrence

Hi Madis,

Sorry for the late reply and thanks for the advice. That's really helpful.

I'll definitely keep you in mind if I need professional Blu-ray or DVD authoring in the future.

Thanks,
Matthew

Response from 3 years, 11 months ago - Matthew Lawrence SHOW