View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000189 | JVT JM H.264/AVC reference software | decoder | public | 2009-09-16 00:24 | 2011-05-21 11:09 |
| Reporter | SwatCat | Assigned To | Karsten Suehring | ||
| Priority | normal | Severity | crash | Reproducibility | always |
| Status | confirmed | Resolution | open | ||
| Product Version | JM 16.1 | ||||
| Summary | 0000189: Crash in JM 16.1 Decoder | ||||
| Description | The JM 16.1 Decoder crashes after decoding a couple of frames even in an error free scenario. Please find my encoder.cfg file attached. What can be the possible reason for the crash and how can I overcome this? Following is the detail of my decoder.cfg file: NAL500.264 ........H.264/AVC coded bitstream NAL500.yuv ........Output file, YUV/RGB test_rec.yuv ........Ref sequence (for SNR) 1 ........Write 4:2:0 chroma components for monochrome streams 0 ........NAL mode (0=Annex B, 1: RTP packets) 0 ........SNR computation offset 2 ........Poc Scale (1 or 2) 500000 ........Rate_Decoder 104000 ........B_decoder 73000 ........F_decoder leakybucketparam.cfg ........LeakyBucket Params 2 ........Err Concealment(0:Off,1:Frame Copy,2:Motion Copy) 4 ........Reference POC gap (2: IPP (Default), 4: IbP / IpP) 2 ........POC gap (2: IPP /IbP/IpP (Default), 4: IPP with frame skip = 1 etc.) 0 ........Silent decode 1 ........Enable Deblocking filter in intra only profiles (0=disable, 1=filter according to SPS parameters) This is a file containing input parameters to the JVT H.264/AVC decoder. The text line following each parameter is discarded by the decoder. For bug reporting and known issues see: https://ipbt.hhi.de | ||||
| Tags | data partitioning | ||||
| related to | 0000140 | acknowledged | Lossy DP videos fail to decode. | |
| child of | 0000062 | assigned | Karsten Suehring | while loops in ldecod.c and image.c do not behave as expected |
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2009-09-16 00:24
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There are bugs in both the frame copy and motion copy error concealment implementations (even when used with error free sequences). For motion copy, see https://ipbt.hhi.de/mantis/view.php?id=172 For frame copy, see https://ipbt.hhi.de/mantis/view.php?id=186 (contains a possible solution) If you know your sequence is error free, you should switch off error concealment in decoder.cfg. |
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I tried to decode my file after turning off error concealment. My decoder still crashes. ----------------------------- JM 16.1 (FRExt) ----------------------------- Decoder config file : decoder.cfg -------------------------------------------------------------------------- Input H.264 bitstream : NAL500.264 Output decoded YUV : NAL500.yuv Output status file : log.dec Input reference file : test_rec.yuv -------------------------------------------------------------------------- POC must = frame# or field# for SNRs to be correct -------------------------------------------------------------------------- Frame POC Pic# QP SnrY SnrU SnrV Y:U:V Time(ms) -------------------------------------------------------------------------- 00000(IDR) 0 0 35 0.0000 0.0000 0.0000 4:2:0 742 00002( P ) 4 1 35 0.0000 0.0000 0.0000 4:2:0 264 After decoding this frame the decoder crashes. |
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It seems there is at least also an encoder bug that make the stream invalid. |
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The problem is actually caused by the decoder. When there is no data partition C (e.g. in the non-IDR intra frame) the decoder fails. I think in the current decoding loop this cannot be fixed properly. I'm adding a dependency to decoder loop restructuring. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2009-09-16 00:24 | SwatCat | New Issue | |
| 2009-09-16 00:24 | SwatCat | File Added: encoder.cfg | |
| 2009-09-16 10:12 | Yves Dhondt | Note Added: 0000331 | |
| 2009-09-17 02:18 | SwatCat | Note Added: 0000332 | |
| 2011-04-13 16:55 | Karsten Suehring | Relationship added | duplicate of 0000186 |
| 2011-04-13 17:47 | Karsten Suehring | Relationship deleted | 0000186 |
| 2011-04-13 17:47 | Karsten Suehring | Note Added: 0000443 | |
| 2011-04-13 17:48 | Karsten Suehring | Assigned To | => Karsten Suehring |
| 2011-04-13 17:48 | Karsten Suehring | Status | new => acknowledged |
| 2011-04-14 15:26 | Karsten Suehring | Note Added: 0000447 | |
| 2011-04-14 15:28 | Karsten Suehring | Relationship added | child of 0000062 |
| 2011-04-14 15:30 | Karsten Suehring | Status | acknowledged => confirmed |
| 2011-05-21 11:09 | Karsten Suehring | Tag Attached: data partitioning | |
| 2011-05-21 11:09 | Karsten Suehring | Relationship added | related to 0000140 |
