[Libav-user] HEVC 2/3 of the frame is green

[Strahinja Radman]

> On 23. 3. 2023., at 20:19, Michael Wood <mornwood23 at gmail.com> wrote:
> 
> 
> 
> On Thu, Mar 23, 2023 at 8:06 PM Strahinja Radman <dr.strashni at gmail.com> wrote:
> 
> 
> On Thu, 23 Mar 2023 at 20:05, Michael Wood <mornwood23 at gmail.com> wrote:
> 
> 
> On Thu, Mar 23, 2023 at 6:20 PM Michael Wood <mornwood23 at gmail.com> wrote:
> Hi,
> 
> I'm having a weird issue with the decoding of H265 4K stream where 1/3 of the frame is rendered normally and the other 2/3 is in green (https://ibb.co/C8yFygm). This only happens if i try to decode 4K stream, for non 4K streams everything works as expected.
> 
> I'm using live555 library to get stream from RTSP server after which packets are sent to the ffmpeg to be decoded and later rendered
> 
> DESCRIBE response contains all required VPS,SPS,PPS fields that are passed as extra data to the codec context.
> 
> This is what is returned from DESCRIBE:
> 
> v=0
> o=- 1679598602413481 1679598602413481 IN IP4 192.168.1.212
> s=Media Presentation
> e=NONE
> b=AS:5050
> t=0 0
> a=control:rtsp://192.168.1.212/Streaming/Channels/101/?transportmode=unicast&profile=Profile_1
> m=video 0 RTP/AVP 96
> c=IN IP4 0.0.0.0
> b=AS:5000
> a=recvonly
> a=x-dimensions:3840,2160
> a=control:rtsp://192.168.1.212/Streaming/Channels/101/trackID=1?transportmode=unicast&profile=Profile_1
> a=rtpmap:96 H265/90000
> a=fmtp:96 sprop-vps=QAEMA///AWAAAAMAgAAAAwAAAwCWAAC94Eg=; sprop-sps=QgEDAWAAAAMAgAAAAwAAAwCWAACgAeAgAhx/jb33am7uS/YC3AQEBBAAAD6AAALuByHe5RAAmRgACsPgAEyMAAVh8EACZGAAKw+AATIwABWHwg==; sprop-pps=RAHBcrCcCgFGZA==
> a=Media_header:MEDIAINFO=494D4B48010300000400050000000000000000000000000081000000000000000000000000000000;
> a=appversion:1.0
> 
> When trying to decode packets i'm getting this output from hevc, the ffplay/VLC works normally with the incoming stream.
> 
> [hevc @ 0x14ac15600] nal_unit_type: 32(VPS), nuh_layer_id: 0, temporal_id: 0
> [hevc @ 0x14ac15600] nal_unit_type: 33(SPS), nuh_layer_id: 0, temporal_id: 0
> [hevc @ 0x14ac15600] nal_unit_type: 34(PPS), nuh_layer_id: 0, temporal_id: 0
> [hevc @ 0x14ac15600] Decoding VPS
> [hevc @ 0x14ac15600] Main profile bitstream
> [hevc @ 0x14ac15600] Decoding SPS
> [hevc @ 0x14ac15600] Main profile bitstream
> [hevc @ 0x14ac15600] Decoding VUI
> [hevc @ 0x14ac15600] Decoding PPS
> [hevc @ 0x14ac15600] nal_unit_type: 32(VPS), nuh_layer_id: 0, temporal_id: 0
> [hevc @ 0x14ac15600] Decoding VPS
> [hevc @ 0x14ac15600] Main profile bitstream
> [hevc @ 0x14ac15600] nal_unit_type: 33(SPS), nuh_layer_id: 0, temporal_id: 0
> [hevc @ 0x14ac15600] Decoding SPS
> [hevc @ 0x14ac15600] Main profile bitstream
> [hevc @ 0x14ac15600] Decoding VUI
> [hevc @ 0x14ac15600] nal_unit_type: 34(PPS), nuh_layer_id: 0, temporal_id: 0
> [hevc @ 0x14ac15600] Decoding PPS
> [hevc @ 0x14ac15600] nal_unit_type: 19(IDR_W_RADL), nuh_layer_id: 0, temporal_id: 0
> [hevc @ 0x14ac15600] Format yuvj420p chosen by get_format().
> [hevc @ 0x14ac15600] Output frame with POC 0.
> [hevc @ 0x14ac15600] nal_unit_type: 19(IDR_W_RADL), nuh_layer_id: 0, temporal_id: 0
> [hevc @ 0x14ac15600] First slice in a frame missing.
> [hevc @ 0x14ac15600] nal_unit_type: 19(IDR_W_RADL), nuh_layer_id: 0, temporal_id: 0
> [hevc @ 0x14ac15600] First slice in a frame missing.
> [hevc @ 0x14ac15600] nal_unit_type: 32(VPS), nuh_layer_id: 0, temporal_id: 0
> [hevc @ 0x14ac15600] Decoding VPS
> [hevc @ 0x14ac15600] Main profile bitstream
> [hevc @ 0x14ac15600] nal_unit_type: 33(SPS), nuh_layer_id: 0, temporal_id: 0
> [hevc @ 0x14ac15600] Decoding SPS
> [hevc @ 0x14ac15600] Main profile bitstream
> [hevc @ 0x14ac15600] Decoding VUI
> [hevc @ 0x14ac15600] nal_unit_type: 34(PPS), nuh_layer_id: 0, temporal_id: 0
> [hevc @ 0x14ac15600] Decoding PPS
> [hevc @ 0x14ac15600] nal_unit_type: 19(IDR_W_RADL), nuh_layer_id: 0, temporal_id: 0
> [hevc @ 0x14ac15600] Output frame with POC 0.
> [hevc @ 0x14ac15600] nal_unit_type: 19(IDR_W_RADL), nuh_layer_id: 0, temporal_id: 0
> [hevc @ 0x14ac15600] First slice in a frame missing.
> [hevc @ 0x14ac15600] nal_unit_type: 19(IDR_W_RADL), nuh_layer_id: 0, temporal_id: 0
> [hevc @ 0x14ac15600] First slice in a frame missing.
> [hevc @ 0x14ac15600] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 2
> [hevc @ 0x14ac15600] Output frame with POC 1.
> [hevc @ 0x14ac15600] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 2
> [hevc @ 0x14ac15600] First slice in a frame missing.
> [hevc @ 0x14ac15600] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 2
> [hevc @ 0x14ac15600] First slice in a frame missing.
> [hevc @ 0x14ac15600] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 2
> [hevc @ 0x14ac15600] Output frame with POC 2.
> [hevc @ 0x14ac15600] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 2
> [hevc @ 0x14ac15600] First slice in a frame missing.
> [hevc @ 0x14ac15600] nal_unit_type: 1(TRAIL_R), nuh_layer_id: 0, temporal_id: 2
> [hevc @ 0x14ac15600] First slice in a frame missing.
> 
> If I write the stream to the file and play that file either through ffplay or VLC the frames are rendered normally. 
> 
> Any suggestion would be welcomed.
> 
> Thanks,
> Milos
> 
>  Hey Strahinja,
> 
> Thanks for the answer,
> 
> Can you provide more info on how to do it ?
> 
> Best,
> Milos
> _______________________________________________
> Libav-user mailing list
> Libav-user at ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/libav-user
> 
> To unsubscribe, visit link above, or email
> libav-user-request at ffmpeg.org with subject "unsubscribe".
> Hey Milos,
> 
> In AVFrame structure, check width, height and stride variables. 
> 
> 
> -- 
> 
> Regards
> Strahinja Radman
> _______________________________________________
> Libav-user mailing list
> Libav-user at ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/libav-user
> 
> To unsubscribe, visit link above, or email
> libav-user-request at ffmpeg.org with subject "unsubscribe".
> 
> Hey Strahinja,
> 
> It seems that both width & height are set correctly. I can't find stride, i don't see any reference to it in the AVFrame header.
> 
> Thanks,
> Milos
> _______________________________________________
> Libav-user mailing list
> Libav-user at ffmpeg.org
> https://ffmpeg.org/mailman/listinfo/libav-user
> 
> To unsubscribe, visit link above, or email
> libav-user-request at ffmpeg.org with subject "unsubscribe”.

Hey Milos,

What does a parameter linesize say?

AVFrame->linesize[0]

Kind regards,
Strahinja


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://ffmpeg.org/pipermail/libav-user/attachments/20230324/e5b7b4af/attachment.htm>