TMS320DM8148: Interlace Decoding Issue

kashetty pranay kumar

Part Number: TMS320DM8148

Hi,

I am using DVRRDK on DM8148. I am facing a issue with interlaced decoding. I am trying to decode 1080I60. Encoded video is proper and able to play and verify using other softwares.

I have set my decoder processCallLevel paramter to VDEC_FIELDLEVELPROCESSCALL and able to create the decoder in interlaced mode.

Issue is Decoder is dropping a field in every frame.

I have went through the decoder code found the dropping is happening because decoded frame output Id is being set to zero by decoder.

outArgs->viddec3OutArgs.outputID[0] value is zero for every alternate field and that field is being dropped.

I have checked for any decoding errors. outArgs->viddec3OutArgs.extendedError flag is not being set.

Without any decoding errors also, outputId is being set to 0 and that field is getting dropped.

Can you please help me in solving this issue as we are stuck here and interlaced decoding is very critical for our requirement ? Should I set any more parameters or Is there any patch available for decoder to solve this issue ?

Hoping to get some answers

Regards,
Pranay kumar

over 7 years ago

0 Prashanth Kumar15 over 7 years ago

Mastermind 8775 points

Hi Pranay,

I would like to check the codec issue here. Which version of the decoder are you using?

0 kashetty pranay kumar over 7 years ago in reply to Prashanth Kumar15

Intellectual 775 points

Hi Prashanth,

Thanks for looking in to the issue. My decoder version is 02.00.08.00. Released in October 2012.

Regards,

Pranay kumar

0 Prashanth Kumar15 over 7 years ago in reply to kashetty pranay kumar

Mastermind 8775 points

Hi Pranay,
That's pretty old version. The latest available is V 02.00.21.00. Can you try with this?

0 kashetty pranay kumar over 7 years ago in reply to Prashanth Kumar15

Intellectual 775 points

Hi Prashanth,

Where can I get the new version of decoder ? Is the interface same as the old decoder. Should I do any changes to integrate new decoder with my DVRRDK ?

Regards,
Pranay kumar

0 kashetty pranay kumar over 7 years ago in reply to Prashanth Kumar15

Intellectual 775 points

Hi Prashanth,

Does the version which I am using has any issues related to Interlaced video decoding?

It is not listed in known issues.

Data sheet says interlaced decoding is supported with current version of Decoder.

Regards,

Pranay kumar

0 Prashanth Kumar15 over 7 years ago in reply to kashetty pranay kumar

Mastermind 8775 points

Hi Pranay,
I am an codec engineer and have limited understanding on DVRRDK.
The change must be simple to integrate the newer version.

There where several bug-fixes over the release version which you are using.
We recommend you to use the latest. You local FAE should provide you.

0 Prashanth Kumar15 over 7 years ago in reply to Prashanth Kumar15

Mastermind 8775 points

Pranay,
You can also look into the points below:
Please refer outBufsInUseFlag handling in
1. UserGuide @ docs folder.
2. Standalone file based testapplication "TestAppDecoder.c" &
3. git.ti.com/.../viddec3test.c

Processors

Processors forum

TMS320DM8148: Interlace Decoding Issue