DVDSP sees project as too big.
by Ronald Thomas
on
Aug 25, 2008 at 6:43:13 pm
I have a project that's 1 hour and 40 minutes long. I compressed it to an mpeg-2 and got a file that's 4.19 GB with an AC3 for the audio of 137.4 MB. When I import that into DVDSP and create tracks with it DVDSP turns that all into 4.8 GB and the resulting VideoTS is too big for a 4.7GB dvd. Am I doing something wrong? This project should fit easily onto a regular DVD - but it's not. Do I need to compress the video more - or the audio? If so what's the best way to do that.
Right now I'm doing a 2 pass VBR with a max bps of 6. The audio is Dolby, 2 channel, 192 kbps.
Re: DVDSP sees project as too big. by Michael Sacci on Aug 25, 2008 at 7:58:53 pm
The only other thing I can think of that could increase the project size is if the audio was something other than ac3, If it was something like aac it would be changed to PCM. I know you said the audio was ac3 but you may want to double check that.
Re: DVDSP sees project as too big. by Eric Pautsch on Aug 25, 2008 at 8:01:47 pm
DVD-5, holds around 4 700 000 000 bytes and that is 4.37 computer GB where 1 kbyte is 1024 bytes* . DVD+R/DVD+RW and DVD-R/DVD-RW supports this format. Also called Single Sided Single Layered. This is the most common DVD Media, often called 4.7 GB Media.
You need to reencode your MPEG to a smaller size. This is a perfect example why bit budgeting is so important before you encode.
Re: DVDSP sees project as too big. by Michael Sacci on Aug 25, 2008 at 8:10:30 pm
I hate the computer math, but it seemed that what he was listing should fit. I get on my bit calc that 100 minutes of video w/ ac3 audio could be encoded with a 5.8 Mbps average.
The one thing I would try it to watch the meter inside DVDSP and audio the video by itself, what does the meter say, then add the audio and what is the total.
Re: DVDSP sees project as too big. by Ronald Thomas on Aug 25, 2008 at 8:51:28 pm
So I laid in the video with no audio and the meter goes down to 4.6 GB - with the audio it goes up to 4.8 GB. I'm trying to recompress everything now to make it a little smaller. What's odd is the file size for the video - at least what my computer tells me, is 4.19 GB. So maybe that is just a bit too much.
Re: DVDSP sees project as too big. by Michael Sacci on Aug 25, 2008 at 9:25:40 pm
Well then it is the math thing that Eric was talking about.
I know One Pass VBR are not as accurite as 2 pass VBR or CBRs. But there is no reason 1 hour and 40 minutes with an average of 5 Mbps would not fit with room to spare. I would personally try to CBR at 5.7 Mbps instead of a VBR.
Re: DVDSP sees project as too big. by Christian Bartsch on Sep 3, 2008 at 2:01:14 pm
Well could it be that your video simply is too big. I assume you are running into problems with GB and GiB here. A single layer DVD can hold as much as 4.3 GiB in reference to what your computer displays in the finder. The 4.7 refer to counting with a base of 1000, not 1024... So 4.3 GiB equal 4.7 GB.
If I am not wrong you simply have to lower the bitrate for the video a bit...
