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buffer underflow on disc burn
In DVDArch 5 studio – Am trying to burn a BD video ( 2 mins in length) to a DVD and am getting the following error
=” File: stream/ooooo.m2ts, status:TSwrapper:dll::CTSwrapper:ProjThread Main:::video buffer underflow”I am trying to sort out using a new (to me) video camera format =”.mov” from a Nikon CoolPix P500. Nikon says the.mov file is a “standard H.264/MPEG-4 AVC with ACC encoded Audio” – Have a number of minor related problems but this is the first instance where I have not been able to burn to a disc. VMS renders the little video with out dificulty. Disc writer is a Pioneer and I have reduced write speed from 16 to 8 to 4 then realized I am not getting past the “preparation” of the iso file phase – PC has an i7 processor with 9 gig of ram ( 2 gig memory limit fix has been applied to VNS10 and DVDArch 5).
Any thoughts would be appreicated, John
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8 Replies
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I haven’t seen buffer underflow since we were burning data CD’s in the early ’80’s using a ‘486 PC running 200 MHz.
The disc must be written in one complete burn cycle. If the computer can’t supply the data fast enough for the DVD burner to have a constant supply of data, (I.E. the buffer goes empty) you will get the “buffer underflow” error.
Is the data to be burned on a network drive?
Steve Mann
MannMade Digital Video
http://www.mmdv.com -
Thanks for the reply,
No it is all in this one PC – it is a tiny little 2 min video. As I said – ever since I have tried to deal with these “,mov” files I have had nothing but headaches – first I could burn a disc but it would only play back on a Blue ray player – I have now moved on to not being able to burn the disc. Sicne the PC would not play the Mpeg videos I tried to burn it as an AVCHD video as I have been lucky with that format in the past – but now get the buffer under run error -and this is while trying to make the .iso file -not even trying to burn the disc ???
It has been suggested that I get Quick Time Pro and convert the .mov file to Mpeg ?? but as Nikon says it is already a Mpeg file. If I check out one of the .mov files with “Mediainfo” – it tells me it is a “MPEG-4(QuickTime) 179MiB 1mn 43s file” = one video stream AVC and one Audio Stream ACC
I know next to nothing about how these format /Codec et al work or do not work well together.
Any thoughts would be apprecaited – or is time to punt on the .mov files ??? JohnJohn O
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I seem to recall somewhere that there is a minimum file size for blu-ray. Try adding ten minutes of generated media (black will do) to the video and see if that works.
Steve Mann
MannMade Digital Video
http://www.mmdv.com -
Did as you suggeted = 10.5 min video on the VNS time line -rendered with properties set to match media settings” – got the .m2v and W64 file which I plugged into a new project in DVDArch & set properties to AVC ……. and got exactly the same error as earlier … I was in “preparation” not even trying for a BD/DVD burn ???
Let me ask a “help me understand” question .. If I start a project with .mov (= mpeg4 1920×1080 source files and render them I get m2v and w64 files – using these as input to DVDArch am I restricted in what format I can output from DVDACH – can I go AVCHD or MPEG —or ??? – or do I really just not understand this at all….
Thanks, JohnJohn O
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I don’t use the studio products, so take my next suggestions lightly.
NEVER let DVDA do the heavy-lifting. Always encode your MPEG and AC3 files in Vegas and just use DVDA to design your menus. If DVDA says that it needs to re-encode your video, then you did something wrong in Vegas.
In Vegas:
Render As, Save as Type: Main Concept MPEG-2
Template: DVD Architect NTSC Widescreen video streamThen use [Custom] to set up your bit rate. If your video is less than 90-minutes, the defaults should be OK. Anything longer and you will need to reduce the “Average (BPS) appropriately.
Do it again to make the AC3 audio file – use the same filename as the MPG file.
In DVDA, just drag the MPG file to the root of the “Project Overview” window. Set up your menus then click on “Prepare”. This will make the video_ts and audio_ts folders that will be your DVD. I like to build these into a separate folder. Note, the audio_ts folder *will* be empty because it’s for the Audio DVD’s that never took off in the market, but you still need it because some DVD players adhere strictly to the DVD specifications, and will refuse a disk missing this folder.
After you’ve “prepared” the DVD files, (here’s why I like to put them in their own folder), use Windows Explorer to check the size of the prepared folder. If it’s less than 4.7GB, then you’re OK to burn the disc.
Hope this helps.
Steve Mann
MannMade Digital Video
http://www.mmdv.com -
Steve,
Thanks for all of that -will take me a bit to study and then try.
Menus : this is a test drill on the .mov files – in order to keep it simple this is a no menu (single play) video … only additions I ever do in DVDA are the menu’s….Does any of what you suggest change if this is an HD project??
John O
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Only when you encode the file for BD. You will use the AVC template instead of the MPEG.
Steve Mann
MannMade Digital Video
http://www.mmdv.com -
Steve, Got it – thanks for your help -I will go away and see what I can do .. John
John O
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