I have the following problem(s)
I have to convert VHS tapes to DVD for a friend and I use EyeTV for that.
Whether I use DVDSP or iDVD does not really matter but I tried both because both gave me problems.
When using iDVD it requires a .dv file. When I export a clip from EyeTV (mpeg-2 source) to .dv it produces a file with regular jerks (approx. once every minute the picture freezes and the sound stops for about a second or two then resumes) so I decided to use DVDSP instead as it saves the redundant step of converting to DV and then back to mpeg-2.
Now the problem is within DVDSP4 itself. I keep getting the message muxer rate too high.
Several webforums tell me that it means the video source has a bitrate which is too high but I do not find the bitrate to be higher than a DVD-player could handle. (6 Mbits max, 4 average) and the EyeTV application only gives me 2 choices 120 minutes or 90 minutes. Several clips DO get encoded successfully with the 90 minutes setting so I wonder why it insists for that one. I want to keep that clip at the same quality. The total DVD size is 3,7 GB so well within range of a DVD-R.
Results 1 to 12 of 12
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Perhaps, if you haven't already done so, you could try demuxing the source file into its elementary streams first, and let DVDSP mux it at a DVD compliant rate? I'm not a DVDSP user, but I recall that one should add elementary streams to the DVDSP assets.
Or else perhaps this topic could be moved from the ffmpegX forum to the Mac forum?
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My bad. I thought you would do an "Export for Toast", which would give you a muxed .mpg file, afaik.
The M2A file is a bit of a surprise to me. I would expect M1A or AC3. Do you have details for that (bitrate, no. of channels, sampling rate, sampling size)? M1A is a subset of M2A, so it could well be within the realm of MPEG-1 audio, making it a non-issue.
If you have DVDSP, then you also have Compressor, which could reencode to whatever bitrate you specify.
And ffmpegX could very well reencode to DVD specification, too.
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MPEG-2 video on DVD is limited to 9.8 Mbps (so 6049 kbps is good, if there are no high bitrate peaks). MPEG-1 audio is limited to 384 kbps. All streams combined should be less than 10.08 Mbps at all times. (Getting close to the limit may not work with DVD±R(W) media though, as they are harder to read than 'silvers'.)
Perhaps you only need to lower the audio bitrate? Try 224 kbps for MPEG-1 audio or go with AC3, which may be up to 448 kbps.
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If your audio bitrate truly is above 384kb/s, definitely consider reducing it to 224. For MPEG1, layer 2 audio, the perceived quality saturates above about 224kb/s (which is why that value was chosen for VCD audio, btw). There's no value in going above 384, and as Case notes, there is a potential problem.
If you're lucky, this is your only problem. Re-encoding the audio at a different rate is a fast operation in many tools (e.g., ffmpegx, audacity), so you don't have to spend a lot of time running this experiment. Just resample the audio, mux the new audio with your existing video, then author and test. With luck, this will solve your problem.
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OK it seem the file rename works indeed but what is the use of a .AC3 file? Can I just rename that to mpa?
OK I'll to stick to mp2, convert to a lower bitrate, rename it to mpa. That should work fine.
Let's see if DVDSP4 can take it now.
Will keep you informed later. Thanks for the help.
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