[FFmpeg-user] FFMPEG cuda hwaccell error

[Nishant Trivedi]

Hello,

I'm trying to decode a video stream for one of my projects using the
following command:

*ffmpeg -hide_banner -hwaccel cuda -nostats -i
rtmp://<ip>:<port>/myapp/mystream -filter_complex [0]fps=fps=1[s0] -map
[s0] -f rawvideo -pix_fmt rgb24 pipe:*

I'm getting the following error:

*[h264 @ 0x55e36ef5ca00] Error creating a NVDEC decoder: 1*
*[h264 @ 0x55e36ef5ca00] Using more than 32 (37) decode surfaces might
cause nvdec to fail.*
*[h264 @ 0x55e36ef5ca00] Try lowering the amount of threads. Using 16 right
now.*
*[h264 @ 0x55e36ef5ca00] Failed setup for format cuda: hwaccel
initialisation returned error.*

I traced this error down to this
<https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/nvdec.c#L339> line
so clearly there's something wrong with my setup but being a newbie in
FFMPEG I don't know what it is. I'd very much appreciate if someone can
help me out with this issue. Full log output follows:

































*Input #0, flv, from 'rrtmp://<ip>:<port>/myapp/mystream:  Metadata:
major_brand     : qt    minor_version   : 512    compatible_brands: qt
encoder         : Lavf58.20.100    server          :
SRS/2.0.263(ZhouGuowen)    srs_primary     : SRS/2.0release    srs_authors
    : winlin,wenjie.zhao    server_version  : 2.0.263  Duration: N/A,
start: 0.010000, bitrate: 2791 kb/s    Stream #0:0: Video: h264 (High),
yuv420p(progressive), 1920x1080, 2791 kb/s, 30 fps, 29.97 tbr, 1k tbnStream
mapping:  Stream #0:0 (h264) -> fps  fps -> Stream #0:0 (rawvideo)Press [q]
to stop, [?] for help[h264 @ 0x55e36ef5ca00] Error creating a NVDEC
decoder: 1[h264 @ 0x55e36ef5ca00] Using more than 32 (37) decode surfaces
might cause nvdec to fail.[h264 @ 0x55e36ef5ca00] Try lowering the amount
of threads. Using 16 right now.[h264 @ 0x55e36ef5ca00] Failed setup for
format cuda: hwaccel initialisation returned error.Output #0, rawvideo, to
'pipe:':  Metadata:    major_brand     : qt    minor_version   : 512
compatible_brands: qt    server_version  : 2.0.263    server          :
SRS/2.0.263(ZhouGuowen)    srs_primary     : SRS/2.0release    srs_authors
    : winlin,wenjie.zhao    encoder         : Lavf58.20.100    Stream #0:0:
Video: rawvideo (RGB[24] / 0x18424752), rgb24, 1920x1080, q=2-31, 49766
kb/s, 1 fps, 1 tbn, 1 tbc    Metadata:      encoder         : Lavc58.35.100
rawvideo*

Best,
--
Nishant.