[ISSUE] DVTB failed when decode mpeg4 file with resolution >D1

xiaoyang xie

Hi, experts Our product development has completed with the H264 part. And now we need to add mpeg4 decode support. I verify the problem by running the dvtb.

Also, I modify the decode demo in the dvsdk_demos_3_10_00_16 to support mpeg4, but it fails at another step. So I think checking the function in the dvtb is easier.

And I find the dvtb script mpeg4dec2.dvs only supports D1 while h264dec2.dvs supports 1080p. So I don't know whether you have tested the mpeg4 decoding with resolution >D1. Looking forward to your replies.

[Setup]

1. Hardware: DM6467T

2. DVSDK: dvsdk3.1

3. Dvtb version: dvtb_4_20_10

[Test steps]

1. Copy mpeg4dec2.dvs from the script folder and change the input file to a D1 mpeg4 file

2. Run ./dvtb-r -s mpeg4dec2.dvs

3. Modified the max width&height value in mpeg4dec2.dvs and change the input file to a 720p mpeg4 file

setp mpeg4dec2 maxWidth 1280

setp mpeg4dec2 maxHeight 720

4. Run ./dvtb-r -s mpeg4dec2.dvs

[Test results]

2. Decode runs correctly

4. Decode failed at [DVTB-ERROR]: linux/dvtbMpeg4Dec2.c: Unable to initialize Video Decoder

over 13 years ago

0 xiaoyang xie over 13 years ago

Intellectual 280 points

The former post there is the log of decoding 720p file, this attachment is the log of decoding D1 file

0 Vincent W. over 13 years ago

TI__Genius 12865 points

Hi Xiaoyang,

I see this message from the trace on the DSP:

[DSP] @5,270,178tk: [+7 T:0x8ba0006c S:0x8ba03d1c] ti.sdo.ce.alg.Algorithm - Algorithm_create> Algorithm creation FAILED; make sure that 1) alg params are correct/appropriate, 2) there is enough internal and external algorithm memory available -- check DSKT2 settings for heap assignments and scratch allocation
This suggests one of the following:
- That the parameters you are passing to the codec for its creation in the .dvs file are not correct. So you should double-check that you are doing the right thing there.
- That there was insufficient memory in DSKT2 to give to the decoder based on what the latter has requested. DSKT2 is a memory manager module that manages memory resources for all codecs in the system. It is configured by the .cfg file that is used to build your DSP server executable (more details on configuration here: http://processors.wiki.ti.com/index.php/Framework_Components_DSKT2_User%27s_Guide#XDC_Configuration_of_DSKT2).
One possibility for you at this point is to enable the trace for DSKT2 and see if it has more detailed error messages. To enable the trace, see:
http://processors.wiki.ti.com/index.php/Trace_in_Framework_Components. You would have to rebuild the server after modifying its configuration, and then re-run the DVTB with this new binary.
- As you said, the MPEG4 decoder may simply not support 720P altogether. I suggest you post your question on the Multimedia Software Codecs Forum along with the version number of your decoder to get a confirmation.

Best regards,
Vincent

0 xiaoyang xie over 13 years ago in reply to Vincent W.

Intellectual 280 points

I have rolled back to the orignal project source code, as I just modify the path in the makefile to compile the

project, without doing anything to the C files, the parameter passed to the alg is not possibly to be wrong.

look like algorithm memory not available.

I have post a new item at Multimedia Software Codecs Forum, and I will try the DSKT2 and feedback

http://e2e.ti.com/support/embedded/multimedia_software_codecs/f/356/t/154400.aspx

0 xiaoyang xie over 13 years ago in reply to xiaoyang xie

Intellectual 280 points

In the link below, the question is answered, the Codec: cs2dm6467_1_00_00_10 I used don't support resolution > D1.

Thanks for your reply.

http://e2e.ti.com/support/embedded/multimedia_software_codecs/f/356/t/154400.aspx

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[ISSUE] DVTB failed when decode mpeg4 file with resolution >D1