1920x1200 resolution H264 encoding and decoding with C6678 H264 codec

Dear All,

The problem here is that 1920x1200 is a resolution>1920x1080. Is anybody done this before? Another question, Is anybody done 4k encoding with 4 chips? Is there any example for this case?

Thanks,

Hi Ruisicom, I got below information from our developers.

For H264HP encoder case, real-time performance is assured upto 1080P streams only. But functionality is assured beyond that  (with corresponding memory allocation increased). In a quick check of 1920x1600 resolution, output is fine for single core. But, in multicore it is failing at create call due to a memory allocation failure.

Could you please try if after changing the config parameters (Max width, max height, then input width and input height) and increasing "slave core memory" you can get 1920x1600 clips encode correctly?

If you are using MCSDK video framework please increase  EXTERNAL_DATA_MEM_SIZE_SLAVE  (siuVctMemMgr.c)

About H264 4K multichip, currently our codecs are multicore but not multichip. Changes in the codec would be required.

thank you,

Paula

 

Hi Paula,

Thanks for you above answer. We have make the 1920x1200 H264 ENCODING work. Now we are working on 1920x1200 H264 DECODING. We got a problem. The ALG_Create function call failed. I don't know the result of failure. Could you give me a help on this?
Or may be can tell me if the C66x_h264hpvdec_01_01_05_01_ELF decoder supports 1920X1200 resoltion? If it does support a resolution bigger than 1920x1080, could you give a example?

thanks!

ruisucom

Hi Ruisicom, could you please give us more details about your use case? it needs to be real time?.. H264 decoder max resolution is 1920x1080, changing to 1920x1200 would require library changes and retesting.

Thank you,

Paula

Hi Paula,

Thanks for your reply. We are working for a remote display case. The data flow looks like 1920x1200 source->encode->transfer->decoder-> display. So we need to decode a 1920x1200 H.264 video. We thought C6678 support 4k encoding already. Decode 1920x1200 should be easy. However, know we know, this is not that easy, since C66x_h264hpvdec_01_01_05_01_ELF does not support 1920x1200. What I should do? develop a decoder by myself? The time is tight. We don't have to do it. :-(

Ruisucom

Hi Ruisucom,

We are trying to estimate the effort required to support decoding 1920x1200 resolution using C66x_h264hpvdec_01_01_05_01_ELF.

Is it possible for you share some decoder input .h264 steams with 1920x1200 resolution through google drive ? 

Thanks,

Praveen.

Hi Praveen，

Our application engineer will send me some 1920x1200 streams later. I will let you know how to download it.
Thanks for your help!
Ruisucom

Hi Praveen,
There are some test H264 stream in following drive url
drive.google.com/folderview

regards,

ruicucom

Hi Ruicucom,

Thanks for sharing the streams.

I have downloaded them and validation is in progress. I will get back to you with an update shortly.

Regards,

Praveen

Hi Ruicucom,

Could you able to decode 1920x1200 resolutions using the modified h264 decoder library that was shared in the previous post ?

Thanks,

Praveen

Hi Praveen,

Yes, I can decode 1920x1200 using the modified version of h264 decoder lib.

Thank you very much!

Ruisucom

Hi Ruisucom,

Thanks for the update. Its good to hear that you could able to decode 1920x1200 resolutions.

Please click the "Verify Answer" button on this post to close the thread

Regards,

Praveen