View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000150 | JVT JM H.264/AVC reference software | encoder | public | 2008-12-16 18:43 | 2011-05-19 14:47 |
| Reporter | Matteo Naccari | Assigned To | Alexis Michael Tourapis | ||
| Priority | normal | Severity | crash | Reproducibility | always |
| Status | resolved | Resolution | fixed | ||
| Product Version | JM 14.2 | ||||
| Fixed in Version | JM 15.0 | ||||
| Summary | 0000150: Further observations on the error #0000135 | ||||
| Description | Dear H.264/AVC experts, I want to add some comments on the ticket 0000135 (Encoder crashes in computeBiPredSAD2(), observed with IBBP coding). I have also experienced the same problem when encoding a 4CIF video sequence and using the EPZS ME algorithm. The encoder crashes after coding the 23rd frame of the City video sequence with a GOP type IBBP. I attach you the configuration file used whereby the encoder crash has been verified. I am using the software version JM14.2 and the MS Visual Studio .DOT NET 2003 with the Visual C++ version 7.0. By compiling the encoder in the debug modality I was able to find the code line that causes the encoder crash: bi_diff = (*src_line++) - ((*ref1_line++ + *ref2_line++ + 1)>>1); this line is inside the compute computeBiPredSAD1 function and the run-time execution stack is as follows: computeBiPredSAD1 EPZSBiPredBlockMotionSearch BiPredBlockMotionSearch BlockMotionSearch PartitionMotionSearch encode_one_macroblock_high encode_one_slice code_a_plane code_a_picture frame_picture encode_one_frame encode_enhancement_layer main the ref2_line pointer it points to null (Bad Pointer). I run the encoder with the following command line: > lencod.exe -d encoder_main.cfg Thank you again for the work you do in order to figure out the problem With kind best regards Matteo Naccari | ||||
| Tags | No tags attached. | ||||
| child of | 0000135 | resolved | Alexis Michael Tourapis | Encoder crashes in computeBiPredSAD2(), observed with IBBP coding |
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2008-12-16 18:43
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Please check the encoder again with version 15.0 after all appropriate parameters have been changed (FramesToBeEncoded, FrameSkip, IntraPeriod etc). We would recommend that you still keep BiPredSearch8x8 = 0 since that mode may still have issues even in this release. |
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Dear Alexis! Actually if I had known that the version JM15.0 would have been released today I would not have disturbed you :). However, I will try your advices and I will let you know whether there are other problems. All the best Matteo |
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Seems this was fixed, but the bug not closed at the time. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2008-12-16 18:43 | Matteo Naccari | New Issue | |
| 2008-12-16 18:43 | Matteo Naccari | File Added: encoder_main.cfg | |
| 2008-12-16 19:54 | Alexis Michael Tourapis | Note Added: 0000269 | |
| 2008-12-16 21:58 | Matteo Naccari | Note Added: 0000270 | |
| 2008-12-16 22:36 | Karsten Suehring | Relationship added | child of 0000135 |
| 2008-12-16 22:37 | Karsten Suehring | Status | new => assigned |
| 2008-12-16 22:37 | Karsten Suehring | Assigned To | => Alexis Michael Tourapis |
| 2011-05-19 14:47 | Karsten Suehring | Note Added: 0000481 | |
| 2011-05-19 14:47 | Karsten Suehring | Status | assigned => resolved |
| 2011-05-19 14:47 | Karsten Suehring | Fixed in Version | => JM 15.0 |
| 2011-05-19 14:47 | Karsten Suehring | Resolution | open => fixed |
