RTOS/TDA2EVM5777: null_src_dec_display shows green artifacts on user generated video

Norman S.

Part Number: TDA2EVM5777

Tool/software: TI-RTOS

We are trying to use the sample use case (null_src_dec_display) with our generated data.

The data file is created from the following MKV file: http://jell.yfish.us/media/jellyfish-20-mbps-hd-h264.mkv

To remove the MKV container and output .h264 bitstream, we used the following command:

ffmpeg -i jellyfish-20-mbps-hd-h264.mkv -an -vcodec libx264 -bf 0 -vstats_file h264.stat 1920x1080_00.h264

We then created the binary index of frame sizes using h264.stat to create 1920x1080_00.hdr.

From here we perform minor modifications in the source code to match the input as follows:

#define ENCDEC_MAX_FRAME_WIDTH    (1920)
#define ENCDEC_MAX_FRAME_HEIGHT   (1080)

...

        strncpy(pPrm->channelParams[chId].nameDataFile, "1920x1080_00.h264", 260);
        strncpy(pPrm->channelParams[chId].nameIndexFile, "1920x1080_00.hdr", 260);

We are able to play the video correctly, but there are green artifacts in the images as shown in the attached image below:

Is there other configurations in use case that we missed and we need to change in order to display the video correctly?

over 8 years ago

0 Prasad Jondhale over 8 years ago

TI__Mastermind 27743 points

Hello Norman San,

Have you made any changes in the use-case or it's default TI use-case?

Did you try playing the H264 video on PC using ffplay? Do you see any artifacts there?

0 Norman S. over 8 years ago in reply to Prasad Jondhale

Intellectual 690 points

Hello Prasad,

Minor changes were made in the use-case to match the resolution and filename of the data input.
Changes in the code are provided as snippet in the first post.

Yes, we tried playing the .h264 file using ffplay. No artifacts are seen when played using ffplay.

Regards,
Norman

0 Prasad Jondhale over 8 years ago in reply to Norman S.

TI__Mastermind 27743 points

Norman San,

Can you please change resolution to 1280x720 and try below input files?

See if you see green lines with these too, then may be the subsequent links have an issue and needs to be analyzed.

e2e.ti.com/.../1018.1280x720_5F00_00.zip

0 Norman S. over 8 years ago in reply to Prasad Jondhale

Intellectual 690 points

Hello Prasad,

Sorry for the late response.
With the data you provided, unfortunately green lines still exists.

Regards,
Norman

0 Prasad Jondhale over 8 years ago in reply to Norman S.

TI__Mastermind 27743 points

Norman San,

Issue can be in display. Either in HDMI connection or in the TV.

Have you tried any other display use-case with same display? You can try nullSrcRxDisplay usecase which takes input from the network.

0 Norman S. over 8 years ago in reply to Prasad Jondhale

Intellectual 690 points

Hello Prasad,

I forgot to mention that we are using the EVM's LCD when this issue is encountered.
# I apologize for not being able to inform this early on.

We tried to use HDMI display, the green lines no longer appears.

o With green lines --> displayType = CHAINS_DISPLAY_TYPE_LDC_10_INCH_LCDCTRL_TC358778_MIPI_DSI_1920_1200
o No green lines --> displayType = CHAINS_DISPLAY_TYPE_HDMI_XXX

We are using rtos/usecases/common/chains_common.c:ChainsCommon_SetDctrlConfig() as is without any changes in parameters.

I guess this is due to overlay parameters.
Since this is not blocking our intended development activities (we can use HDMI for now), I will pend checking the overlay params for now and will spend time on this in the future.

Thank you very much for your support.

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RTOS/TDA2EVM5777: null_src_dec_display shows green artifacts on user generated video