Re: [PATCH] media: venus: allow interlaced video streams

[Vikash Garodia <vikash.garodia@oss.qualcomm.com>]

On 3/2/2026 4:58 PM, Dmitry Baryshkov wrote:
> On Mon, Mar 02, 2026 at 01:01:18PM +0530, Vikash Garodia wrote:
>>
>> On 3/1/2026 4:05 AM, Dmitry Baryshkov wrote:
>>> On Sat, Feb 28, 2026 at 09:54:20PM +0100, Piotr Oniszczuk wrote:
>>>>
>>>>
>>>>> Wiadomość napisana przez Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> w dniu 28 lut 2026, o godz. 10:49:
>>>>>
>>>>> Venus driver errors out on the interlaced streams with the 'field isn't
>>>>> supported' error message, which e.g. prevents decoding of the MPEG2
>>>>> video streams. Don't error out if the buffer is set to contain
>>>>> interlaced data.
>>>>>
>>>>> Tested with the fluster enabled to handle MPEG2 through Gstreamer:
>>>>>
> 
> [...]
> 
>>>>>
>>>> Dmitry,
>>>> I applied this on 6.19.4 mainline and give run with interlaced content (hd tv) on qcs6490 (radxa dragon sbc).
>>>> Playback fails like this: https://gist.github.com/warpme/a368983678af0a76af85314808773076
>>>> pls see a bootom kernel output showing venus failure.
>>>> my sw stack plays ok on e.g rpi4 stateful v4l2m2m so i think root cause isn't in my userspace....
>>>> pls let me know if anything extra is required to fix venus decoder issue.
>>>> br
>>>
>>>
>>> Interesting. So, most likely, H.264 decoder can't cope with it and we
>>> need to allow non-NONE fields only for MPEG2. Let's see if Vikash will
>>> have any other ideas.
>>>
>>
>> Venus should already support h264 interlace.
> 
> I guess, the question is: do we support interlaced H.264 streams?

Yes, we do support interlace.

> 
>>
>> Piotr, do you see the same failure without this patch ?
>>
>> Regards,
>> Vikash
>