TDA4VM-Q1: Encoding performance of hardware

Damon@INVO

Part Number: TDA4VM-Q1
Other Parts Discussed in Thread: TDA4VM

Tool/software:

Hello!

SDK:0901

My requirement is to be able to meet the encoding needs of 4-5 channels with a resolution of 1280 * 960 and FPS>=20. After consulting the platform manual, I found that the performance can meet the requirements. But when I use Gstreame encoding on the TDA4VM platform, with only 4 encoding channels with a resolution of 1280 * 960, the frame rate of the entire Graph is only 18. The frame rate captured by the camera is 25.

Question:How can I solve this problem or How can I improve my encoding performance？

4 months ago

0 Neehar Sawant 4 months ago

TI__Genius 13130 points

Hi,

Our expert assigned to this E2E thread is currently out of office until Dec 19.

Please expect a delay in response.

Thanks,

Neehar

0 Damon@INVO 3 months ago in reply to Neehar Sawant

Intellectual 700 points

Hi,

May I ask when can I get a reply ?

Thanks

0 Sarabesh Srinivasan 3 months ago in reply to Damon@INVO

TI__Genius 12130 points

Hi,

I am currently out of office and will address as soon as I can. I'll replicate a 4 channel encode with our own stream to try to replicate. Could you share the Gstreamer pipeline you are using?

0 Damon@INVO 3 months ago in reply to Sarabesh Srinivasan

Intellectual 700 points

Here is our code.

void CFrameDataConverter::CreateCompressH264Pipeline(int iWidth, int iHeight)

{

if(nullptr != m_pCompressPipeline){

CloseCompressPipline();

}

std::string strName = (std::string("pipeline_") + m_strChannel);

m_pCompressPipeline = gst_pipeline_new(strName.c_str());

strName = (std::string("appsrc_") + m_strChannel);

m_pCompressSource = gst_element_factory_make("appsrc", strName.c_str());

strName = (std::string("queue_") + m_strChannel);

GstElement *queue = gst_element_factory_make("queue", strName.c_str());

strName = (std::string("capsfilter_") + m_strChannel);

GstElement *pFilter1 = gst_element_factory_make("capsfilter", strName.c_str());

strName = (std::string("h264enc_") + m_strChannel);

GstElement *pEncoder = gst_element_factory_make("v4l2h264enc", strName.c_str());

strName = (std::string("appsink_") + m_strChannel);

GstElement* pSink = gst_element_factory_make("appsink", strName.c_str());

g_object_set(m_pCompressSource, "format", GST_FORMAT_TIME, "is-live", TRUE, NULL);

g_object_set(queue, "leaky", 0, NULL);

GstCaps *caps1 = gst_caps_new_simple("video/x-raw",

"format", G_TYPE_STRING, m_strFromFormat.c_str(),

"width", G_TYPE_INT, iWidth,

"height", G_TYPE_INT, iHeight,

"framerate", GST_TYPE_FRACTION, 25, 1,

"colorimetry", G_TYPE_STRING, "bt601",

NULL);

g_object_set(pFilter1, "caps", caps1, NULL);

gst_caps_unref(caps1);

/*Enum "GstV4l2IOMode" Default: 0, "auto"

(0): auto - GST_V4L2_IO_AUTO

(1): rw - GST_V4L2_IO_RW

(2): mmap - GST_V4L2_IO_MMAP

(3): userptr - GST_V4L2_IO_USERPTR

(4): dmabuf - GST_V4L2_IO_DMABUF

(5): dmabuf-import - GST_V4L2_IO_DMABUF_IMPORT

g_object_set(G_OBJECT(pEncoder), "output-io-mode", 0, NULL);

GstStructure *extra_controls =

gst_structure_new("extra-controls",

"video_bitrate", G_TYPE_INT, 10000000,

// "h264_i_frame_period",G_TYPE_INT, 12,

NULL

);

GValue value = G_VALUE_INIT;

g_value_init(&value, GST_TYPE_STRUCTURE);

g_value_take_boxed(&value, extra_controls);

g_object_set_property(G_OBJECT(pEncoder), "extra-controls", &value);

g_value_unset(&value);

gst_bin_add_many(GST_BIN(m_pCompressPipeline), m_pCompressSource, queue, pFilter1, pEncoder, pSink, NULL);

gst_element_link_many(m_pCompressSource, queue, pFilter1, pEncoder, pSink, NULL);

GstAppSinkCallbacks callbacks = { NULL, NULL, new_sample_Compress};

gst_app_sink_set_callbacks(GST_APP_SINK(pSink), &callbacks, this, NULL);

return;

}

Processors

Processors forum

TDA4VM-Q1: Encoding performance of hardware