关于视频压缩和解压缩的问题

[DSP] @0,012,676tk: [+0 T:0x9ca43214] OG - Global_setSpecialTrace> return
@4,125,304us: [+0 T:0x41d97490] CE - Engine_fwriteTrace> returning count [10529]
@4,125,365us: [+0 T:0x41d97490] CE - Engine_initFromServer(0x708d8)
@4,125,395us: [+0 T:0x41d97490] CE - Engine_getNumServerAlgs(0x708d8 0x41d96c90)
@4,125,578us: [+0 T:0x41d97490] CE - Engine_getNumServerAlgs number of server algs = 12
@4,125,639us: [+0 T:0x41d97490] CE - Engine_getNumServerAlgs exit 0
@4,125,639us: [+2 T:0x41d97490] CE - Engine_initFromServer> Number of remote algs statically configured in engine: 12
@4,125,670us: [+2 T:0x41d97490] CE - Engine_initFromServer> Number of statically configured remote algs = number of server algs: 12
@4,125,700us: [+0 T:0x41d97490] CE - Engine_initFromServer> Returning 0
@4,125,731us: [+0 T:0x41d97490] CE - Engine_open> return(461016)
@4,125,822us: [+0 T:0x41d97490] ti.sdo.ce.video2.VIDDEC2 - VIDDEC2_create> Enter (engine=0x708d8, name='h264dec', params=0x41d96db8)
@4,125,853us: [+0 T:0x41d97490] CV - VISA_create(0x708d8, 'h264dec', 0x41d96db8, 0x2340, 'ti.sdo.ce.video2.IVIDDEC2')
@4,125,883us: [+0 T:0x41d97490] CV - VISA_create2(0x708d8, 'h264dec', 0x41d96db8, 0x1c, 0x2340, 'ti.sdo.ce.video2.IVIDDEC2')
@4,125,975us: [+0 T:0x41d97490] CE - Engine_createNode(0x708d8, 'h264dec', 2340, 0x41d96db8, 0x1c, 0x41d96b90)
@4,126,006us: [+0 T:0x41d97490] CE - Engine> allocNode Enter(engine=0x708d8, impId='h264dec')
@4,126,036us: [+0 T:0x41d97490] CE - Engine> allocNode(). Calling (Comm_create(gppfromnode_1925_1, 0x70d38, NULL)
@4,224,242us: [+6 T:0x41d97490] CE - Engine_createNode> Remote node creation FAILED (0x80008008).
[DSP] @3,197,307tk: [+0 T:0x9ca43214] OM - Memory_alloc> Enter(size=0x18)
[DSP] @3,197,363tk: [+0 T:0x9ca43214] OM - Memory_alloc> return (0x9ca47ce8)
[DSP] @3,197,407tk: [+0 T:0x9ca43214] OM - Memory_alloc> Enter(size=0xa)
[DSP] @3,197,444tk: [+0 T:0x9ca43214] OM - Memory_alloc> return (0x9ca47d00)
[DSP] @3,197,492tk: [+0 T:0x9ca43214] OM - Memory_alloc> Enter(size=0x20)
[DSP] @3,197,530tk: [+0 T:0x9ca43214] OM - Memory_alloc> return (0x9ca47d10)
[DSP] @3,197,574tk: [+0 T:0x9ca43214] OM - Memory_alloc> Enter(size=0x24)
[DSP] @3,197,611tk: [+0 T:0x9ca43214] OM - Memory_alloc> return (0x9ca47d30)

lu edward 说：

1，使用dvsdk demos 压缩处理的文件后缀名为.mpeg4这个问价用什么播放器播放？

      我使用的是VLC和暴风影音，VLC不能播放，但是暴风只播放了1秒就结束了，然后重复播放。我在板子上回放同一个文件流畅显示没有问题。

你使用的是哪个芯片？编码的格式是mpeg4还是h264？TI demo编码出来的文件都是裸码流，一般的播放器需要有文件的封装，例如avi，mp4. 你把裸码流封装一下，再用播放器解码试试。

lu edward 说：

2，想要使用decode 来解码.264文件，但是failed。这个是什么问题造成的？

Decode demo started.
@0x000c7d3e:[T:0x40094290] ti.sdo.dmai - [Dmai] Dmai log level set to '2'. Note that calling CERuntime_init after this point may cause unexpected change to DMAI tracing behavior.
@0x00108862:[T:0x41c92490] ti.sdo.dmai - [Vdec2] Failed to open video decode algorithm
Error: Failed to create video decoder: h264dec

从你的log没有看到有用的信息。请问你解码的码流是你使用的芯片编码出来的么？如果不是，码流的分辨率/profile是你使用的芯片h264dec支持的么？