[FFmpeg-trac] #9082(avcodec:new): Memory leak while trancoding on GPU

[FFmpeg]

#9082: Memory leak while trancoding on GPU
---------------------------------+--------------------------------------
             Reporter:  misko    |                     Type:  defect
               Status:  new      |                 Priority:  normal
            Component:  avcodec  |                  Version:  git-master
             Keywords:           |               Blocked By:
             Blocking:           |  Reproduced by developer:  0
Analyzed by developer:  0        |
---------------------------------+--------------------------------------
 Summary of the bug:

 While transcoding live SPTS with H.264/AVC video to multiple H.264/AVC
 output profiles and MPEG1 Layer 2 audio to AAC using nVidia GPU (Pascal)
 NVENC, all ffmpeg versions newer than commit 8a81820624 (022a12b306 and
 newer - found using git-bisect) are causing memory leak. Note: during a
 brief testing with single profile the leaking wasn't detected. But with at
 least 2 profiles being output simultaneously, memory leaking definitely
 occurs.

 How to reproduce:
 {{{
 /opt/ffmpeg/bin/ffmpeg -hide_banner -nostats -loglevel verbose -vsync -1
 -hwaccel cuvid -hwaccel_output_format cuda -hwaccel_device 1
 -init_hw_device cuda=cuda:1 -filter_hw_device cuda -threads 1 -fflags
 +discardcorrupt -c:v h264_cuvid -f mpegts -i
 'udp://239.232.9.1:1234?sources=10.128.0.9&fifo_size=100000&timeout=2000000'
 -filter_complex
 '[0:v:0]yadif_cuda=mode=send_frame:parity=auto:deint=all,split=3[s_p1][s_p2][s_p3];[s_p1]scale_npp=-1:1080:interp_algo=lanczos[v_p1];[s_p2]scale_npp=-1:720:interp_algo=lanczos[v_p2];[s_p3]scale_npp=-1:576:interp_algo=lanczos[v_p3]'
 -map '[v_p1]' -map '#0xc86' -c:v h264_nvenc -preset:v p4 -rc:v vbr
 -profile:v high -forced-idr:v 1 -force_key_frames:v
 'expr:gte(t,n_forced*2)' -b:v 5000000 -maxrate:v 5000000 -bufsize:v
 2500000 -spatial-aq:v 1 -aq-strength:v 15 -bf:v 3 -b_ref_mode:v middle
 -no-scenecut:v 1 -rc-lookahead:v 32 -coder:v cabac -c:a:0 libfdk_aac
 -ac:a:0 2 -r:a:0 48000 -b:a:0 96k -f mpegts -mpegts_service_type
 advanced_codec_digital_hdtv -mpegts_flags system_b
 'udp://239.232.229.61:10001?pkt_size=1316&fifo_size=100000' -map '[v_p2]'
 -map '#0xc86' -c:v h264_nvenc -preset:v p4 -rc:v vbr -profile:v high
 -forced-idr:v 1 -force_key_frames:v 'expr:gte(t,n_forced*2)' -b:v 2500000
 -maxrate:v 2500000 -bufsize:v 1250000 -spatial-aq:v 1 -aq-strength:v 15
 -bf:v 3 -b_ref_mode:v middle -no-scenecut:v 1 -rc-lookahead:v 32 -coder:v
 cabac -c:a:0 libfdk_aac -ac:a:0 2 -r:a:0 48000 -b:a:0 96k -f mpegts
 -mpegts_service_type advanced_codec_digital_hdtv -mpegts_flags system_b
 'udp://239.232.229.61:10002?pkt_size=1316&fifo_size=100000' -map '[v_p3]'
 -map '#0xc86' -c:v h264_nvenc -preset:v p4 -rc:v vbr -profile:v main
 -forced-idr:v 1 -force_key_frames:v 'expr:gte(t,n_forced*2)' -b:v 1250000
 -maxrate:v 1250000 -bufsize:v 625000 -spatial-aq:v 1 -aq-strength:v 15
 -bf:v 3 -b_ref_mode:v middle -no-scenecut:v 1 -rc-lookahead:v 32 -coder:v
 cabac -c:a:0 libfdk_aac -ac:a:0 2 -r:a:0 48000 -b:a:0 96k -f mpegts
 -mpegts_service_type advanced_codec_digital_hdtv -mpegts_flags system_b
 'udp://239.232.229.61:10003?pkt_size=1316&fifo_size=100000'
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/9082>
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