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skahn

Static, Noise After Blu-Ray Burn

Question

2 problems:

1) static, cracking noise in audio on blu-ray made in toast titanium 11. all original files, including disc image are all fine. seems to happen in the burning. using new iMac, snow leopard, original file is only 2.5 gigs, 5:07 minutes of HD video, compressed in Encore with the following settings: H264/AVC, 1920x1080, 23.98fps. Audio: Dolby Digital Stereo 48000Hz. Custom settings in toast for burning are:

Mpeg-4 avc

av bit rate 26

max bit rate 26

reencoding : never

field dom: auto

aspect ratio: auto

audio format : dolby digital , 192 kbps with no dynamic range compression.

 

should i try dynamic range compression? or try changing the audio to PCM? it's a drag to waste disks trying these out, and on a deadline for a fellowship! help!

ALSO:

2) when i try to check the file in toast, in the edit section, i get picture but no audio. thank you!

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Typically Toast does nothing with existing AC3 audio tracks. You probably can see this for yourself by checking the Roxio Converted Items folder when Toast is doing the encoding. There likely is just a video stream being encoded and no audio stream. Toast then multiplexes the extracted AC3 audio with the encoded video. If this is the case then the audio stream is not modified in any way which suggests that the static you're hearing is a problem the player is having reading the disc. Something you might check is to insert the burned Blu-ray disc in your Mac and open Roxio Video Player from the Toast Extras menu. It should find the disc and start playback on your Mac. How does it sound?

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Typically Toast does nothing with existing AC3 audio tracks. You probably can see this for yourself by checking the Roxio Converted Items folder when Toast is doing the encoding. There likely is just a video stream being encoded and no audio stream. Toast then multiplexes the extracted AC3 audio with the encoded video. If this is the case then the audio stream is not modified in any way which suggests that the static you're hearing is a problem the player is having reading the disc. Something you might check is to insert the burned Blu-ray disc in your Mac and open Roxio Video Player from the Toast Extras menu. It should find the disc and start playback on your Mac. How does it sound?

 

thank you for your reply. my mac is rejecting the disk. i will try again. i was under the impression that Macs are not able to deal with blu-ray disks?

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thank you for your reply. my mac is rejecting the disk. i will try again. i was under the impression that Macs are not able to deal with blu-ray disks?

 

also, there are two short videos pieces on the disk. only one of them has the distortion problem, the other doesn't. the one with no distortion has Mpeg-4 audio.

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Typically Toast does nothing with existing AC3 audio tracks. You probably can see this for yourself by checking the Roxio Converted Items folder when Toast is doing the encoding. There likely is just a video stream being encoded and no audio stream. Toast then multiplexes the extracted AC3 audio with the encoded video. If this is the case then the audio stream is not modified in any way which suggests that the static you're hearing is a problem the player is having reading the disc. Something you might check is to insert the burned Blu-ray disc in your Mac and open Roxio Video Player from the Toast Extras menu. It should find the disc and start playback on your Mac. How does it sound?

 

oops, wrong reply window. my mac is rejecting the disk, won't recognize it. also, there are two video pieces on the disk. only one has the distortion. the second piece seems fine, and the audio for that piece is mpeg 4. which makes me thing somehow toast is having trouble with the endcode? or could it be that it doesn't like having two different audio types for one set of burn settings?

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thank you for your reply. my mac is rejecting the disk. i will try again. i was under the impression that Macs are not able to deal with blu-ray disks?

sorry i take that back. there seems to be distortion on both. but neither of the original files have any distortion...

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Typically Toast does nothing with existing AC3 audio tracks. You probably can see this for yourself by checking the Roxio Converted Items folder when Toast is doing the encoding. There likely is just a video stream being encoded and no audio stream. Toast then multiplexes the extracted AC3 audio with the encoded video. If this is the case then the audio stream is not modified in any way which suggests that the static you're hearing is a problem the player is having reading the disc. Something you might check is to insert the burned Blu-ray disc in your Mac and open Roxio Video Player from the Toast Extras menu. It should find the disc and start playback on your Mac. How does it sound?

 

and the blu-ray player i'm using is brand new just bought two days ago for monitoring this project since macs don't play blu-rays. tried analog rca outs and also optical digital out, same sound problems.

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thank you for your reply. my mac is rejecting the disk. i will try again. i was under the impression that Macs are not able to deal with blu-ray disks?

 

very interesting. i finally got your suggestion to work but putting the blu-ray disk into the blu-ray recorder connected to my mac and using roxio video player. it plays very jerky, as if needing to buffer, but there is no static in the audio.

 

since the distortion in the audio occurred with playback on brand new consumer BD-R player, what should i do if i need to make disks that are playable on consumer BD-R players? for instance, the fellowship i'm applying to might be using a similar player. i have no way to know. thank you for any thoughts and for your suggestion.

best,

stanya

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very interesting. i finally got your suggestion to work but putting the blu-ray disk into the blu-ray recorder connected to my mac and using roxio video player. it plays very jerky, as if needing to buffer, but there is no static in the audio.

 

since the distortion in the audio occurred with playback on brand new consumer BD-R player, what should i do if i need to make disks that are playable on consumer BD-R players? for instance, the fellowship i'm applying to might be using a similar player. i have no way to know. thank you for any thoughts and for your suggestion.

best,

stanya

I'm not certain what will guarantee how it plays on various Blu-ray players. One thing to check is that your Blu-ray player has current firmware. Also check if the player's manufacturer recommends any specific brand of disc media to use with their player.

 

You say that the Mac wouldn't mount the disc. Do you have a Blu-ray burner connected to the Mac or did you burn a Blu-ray video disc to a regular DVD disc? In either case you the Mac should be able to mount the disc when you use the drive that burned the disc. Maybe something went wrong with that particular disc. Something you can try is to choose Save as Disc Image in Toast instead of clicking the burn button. When that is done burn the resulting .toast file to disc using the Image File setting in the Copy window.

 

There likely are some brands of blank Blu-ray discs that are better than others. Videohelp.com has a disc media database where users report their results burning to different brands of discs. If you insert one of your discs and choose Disc Info from Toast's Recorder menu there should be a hotlink in the window that appears that takes you to that site where there are reports for those specific discs.

 

If you want to have Toast re-encode the audio you'll need to first have Toast convert the original video file to (I suggest) a h.264 file. Then place that video in the Toast Video window where Toast will convert the video and audio when authoring the Blu-ray disc. I don't think changing the audio to PCM will help but that is something you can try. PCM audio is uncompressed so it takes up more space on a disc and can raise the overall bit rate making it more difficult for the player to play.

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-------------------------------------------------------------------------

He complete reinstall SOLVED this issue.

--------------------------------------------------------------------------

Hi there. Any news about this issue? I've got the same here. I'm using Roxio 18 Pro. I just did a complete software reinstall and created the disc again. Going to burn ir later and check the result.

My original video is from GoPro, edited in IMovie. Not sure, but I guess the audio ia AAC. 

Edited by Andre Pinto

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