Hello all,
I've encountered a (what seems to me) rather strange problem when trying to record a video file to a DVD on my Linux box.
I have several video files encoded in mpeg-4. The videos can be played back from the hard-drive with no problem. However, after I burn the videos on a DVD media and play them back, there appear to be minor corruptions resulting in distorted video in some places. For instance, xine reports the following types of errors:
[mpeg4 @ 0xb63e5b48]ac-tex damaged at 24 9
[mpeg4 @ 0xb63e5b48]Error at MB: 393
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]concealing 628 DC, 628 AC, 628 MV errors
[mpeg4 @ 0xb63e5b48]header damaged
[mpeg4 @ 0xb63e5b48]ac-tex damaged at 9 18
[mpeg4 @ 0xb63e5b48]Error at MB: 747
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]concealing 281 DC, 281 AC, 281 MV errors
[mpeg4 @ 0xb63e5b48]ac-tex damaged at 39 17
[mpeg4 @ 0xb63e5b48]Error at MB: 736
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]Error at MB: 262
[mpeg4 @ 0xb63e5b48]cbpc damaged at 14 21
[mpeg4 @ 0xb63e5b48]Error at MB: 875
[mpeg4 @ 0xb63e5b48]concealing 771 DC, 771 AC, 771 MV errors
[mpeg4 @ 0xb63e5b48]ac-tex damaged at 2 13
[mpeg4 @ 0xb63e5b48]Error at MB: 535
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]Error at MB: 268
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]cbpc damaged at 16 22
[mpeg4 @ 0xb63e5b48]Error at MB: 918
[mpeg4 @ 0xb63e5b48]concealing 588 DC, 588 AC, 588 MV errors
[mpeg4 @ 0xb63e5b48]ac-tex damaged at 29 13
[mpeg4 @ 0xb63e5b48]Error at MB: 562
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]illegal mb_num in video packet (993 960)
[mpeg4 @ 0xb63e5b48]concealing 461 DC, 461 AC, 461 MV errors
[mpeg4 @ 0xb63e5b48]ac-tex damaged at 34 9
[mpeg4 @ 0xb63e5b48]Error at MB: 403
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]Error at MB: 528
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]concealing 616 DC, 616 AC, 616 MV errors
[mpeg4 @ 0xb63e5b48]2. marker bit missing in 3. esc
[mpeg4 @ 0xb63e5b48]Error at MB: 364
[mpeg4 @ 0xb63e5b48]Error at MB: 301
[mpeg4 @ 0xb63e5b48]concealing 960 DC, 960 AC, 960 MV errors
[mpeg4 @ 0xb63e5b48]header damaged
[mpeg4 @ 0xb63e5b48]Error at MB: 131
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]Error at MB: 395
[mpeg4 @ 0xb63e5b48]illegal mb_num in video packet (965 960)
[mpeg4 @ 0xb63e5b48]illegal mb_num in video packet (965 960)
[mpeg4 @ 0xb63e5b48]concealing 885 DC, 885 AC, 885 MV errors
[mpeg4 @ 0xb63e5b48]ac-tex damaged at 36 8
[mpeg4 @ 0xb63e5b48]Error at MB: 364
Marker bit missing before time_increment in video packed header
[mpeg4 @ 0xb63e5b48]cbpc damaged at 10 20
[mpeg4 @ 0xb63e5b48]Error at MB: 830
[mpeg4 @ 0xb63e5b48]concealing 447 DC, 447 AC, 447 MV errors
[mpeg4 @ 0xb63e5b48]cbpc damaged at 37 21
[mpeg4 @ 0xb63e5b48]Error at MB: 898
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]marker does not match f_code
[mpeg4 @ 0xb63e5b48]concealing 184 DC, 184 AC, 184 MV errors
[mpeg4 @ 0xb63e5b48]ac-tex damaged at 14 7
So far I have confirmed that the files recorded on the DVD differ in some places from the ones on the hard-drive by running a 'diff' on them. Is this related to the way the data is structured on the DVD?!
The setup I am using is as follows:
Linux Debian 2.6.18-5-k7
ABIT NF7-S with Sil 3112A SATA onboard
Plextor PX-716 (SATA)
wodim 9:1.1.6-1 (have also tried dvd+rw-tools with the same effect)
The drive works fine as far as playing back rental DVD's .
I have also tried to record CD's with no problem.
Any help would be greatly appreciated (as I am running out of space on my hard-drive and really need to back up all these videos). Are there other forums/newsgroups that might be helpful?
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