Can't mux my dvd

[nautilus7]

I 've used ifoedit to mux (author) an m2v file (encoded with cce, 8500 max bitrate), an ac3 audio stream and 2 subpictures streams and i got the well known error: "too many dropped frames".

Then i tried muxman but the authoring proccess stopped at some point too, with the message: "probably exceeding bitrate".

What's wrong? Is there a program that i can author a dvd with?

[nautilus7]

Is there anyone to help me?

[nautilus7]

The muxman log reports the following:

MuxMan version 0.17.1
Accepted audio F:\DVD rips\DVD 5\6ch 48kHz DRC English DELAY 0ms.ac3
Opened sub 1 file F:\DVD rips\DVD 5\Greek [W-L] DELAY 75880ms.sup.
Opened sub 2 file F:\DVD rips\DVD 5\English [W-L] DELAY 113080ms.sup.

20:26:44 Begin multiplex VTS01.
Title Segment List
Segment_1 non-seamless
Encoded stream 20 is script stream 1.
Encoded stream 21 is script stream 2.
Buffering audio track 1 file F:\DVD rips\DVD 5\6ch 48kHz DRC English DELAY 0ms.ac3.
Maximum audio duration 402396 fields.
Positioned F:\DVD rips\DVD 5\cinderella.m2v to 00:00:00:00
Starting scene Segment_1_scn1 at 00:00:00:00
Starting scene Segment_1_scn2 at 00:07:50:17, requested for 00:07:50:12
Starting scene Segment_1_scn3 at 00:15:54:01
Starting scene Segment_1_scn4 at 00:22:36:19, requested for 00:22:36:16
Starting scene Segment_1_scn5 at 00:27:38:11, requested for 00:27:38:08
Starting scene Segment_1_scn6 at 00:37:28:19
Starting scene Segment_1_scn7 at 00:42:23:19, requested for 00:42:23:08
Starting scene Segment_1_scn8 at 00:47:11:17
Starting scene Segment_1_scn9 at 00:56:30:17, requested for 00:56:30:16
P-STD buffer underflow by 28418 bytes at 310856492, sector 962288.
P-STD buffer underflow by 14128 bytes at 310860092, sector 962313.
P-STD buffer underflow by 14272 bytes at 310863692, sector 962337.
P-STD buffer underflow by 55232 bytes at 310867292, sector 963150.
P-STD buffer underflow by 13564 bytes at 310870892, sector 963150.
P-STD buffer underflow by 11532 bytes at 310874492, sector 963150.
P-STD buffer underflow by 22944 bytes at 310878092, sector 963150.
P-STD buffer underflow by 11360 bytes at 310881692, sector 963150.
P-STD buffer underflow by 10108 bytes at 310885292, sector 963150.
P-STD buffer underflow by 21122 bytes at 310888892, sector 964382.
P-STD buffer underflow by 11724 bytes at 310892492, sector 964383.
P-STD buffer underflow by 10576 bytes at 310896092, sector 964384.
P-STD buffer underflow by 24472 bytes at 310899692, sector 964385.
P-STD buffer underflow by 11528 bytes at 310903292, sector 964386.
P-STD buffer underflow by 11096 bytes at 310906892, sector 964387.


I also tried Rejig and i successfully managed to author the dvd, but the subpictures are not displayed corectly.
Also, the final size was 4,45 GB, when the video + audio + subs size is 4,36 GB. So, i wonder who much space is needed for the muxing proccess?