Created attachment 173252 [details]
project file

SUMMARY

After 7 hours of rendering, it said it was complete and the file size seemed appropriate, but the video didn't play past a certain point.

SOFTWARE/OS VERSIONS
Windows: 10

ADDITIONAL INFORMATION

Kdenlive version 24.11.70, Aug 31st daily build kdenlive-master-8737-windows-gcc-x86_64.exe

I was doing a 1080p render

f=matroska vcodec=hevc_nvenc rc=constqp vqp=%quality vq=%quality acodec=aac ab=%audiobitrate+'k' pix_fmt=yuv444p vqp=%quality

ab=160k acodec=aac channels=2 f=matroska pix_fmt=yuv444p rc=constqp real_time=-10 scale=0.5 threads=0 vcodec=hevc_nvenc vq=0 vqp=0

I tried to repair the file with ffmpeg but it didn't work

C:\Program Files\kdenlive\bin>ffmpeg.exe -i "C:\Users\die4e\Videos\race 2024-08-23\race 1080p.mkv" -c:v copy -c:a copy "C:\Users\die4e\Videos\race 2024-08-23\race 1080p draft 1.mkv"
ffmpeg version 7.0.1 Copyright (c) 2000-2024 the FFmpeg developers
  built with gcc 13.2.0 (x86_64-posix-seh-rev1, Built by MinGW-Builds project)
  configuration: --enable-libmp3lame --cc=gcc --cxx=g++ --enable-dxva2 --enable-libopus --enable-libvorbis --enable-libvpx --enable-libass --enable-libaom --enable-libdav1d --enable-libzimg --arch=x86_64 --enable-shared --disable-debug --disable-doc --enable-gpl --enable-version3 --enable-nonfree --enable-openssl --enable-libx264 --enable-libx265 --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-cuvid --enable-amf --enable-libsvtav1 --prefix=/c/gitlab/craft/windows-mingw_64-gcc --libdir=/c/gitlab/craft/windows-mingw_64-gcc/lib
  libavutil      59.  8.100 / 59.  8.100
  libavcodec     61.  3.100 / 61.  3.100
  libavformat    61.  1.100 / 61.  1.100
  libavdevice    61.  1.100 / 61.  1.100
  libavfilter    10.  1.100 / 10.  1.100
  libswscale      8.  1.100 /  8.  1.100
  libswresample   5.  1.100 /  5.  1.100
  libpostproc    58.  1.100 / 58.  1.100
Input #0, matroska,webm, from 'C:\Users\die4e\Videos\race 2024-08-23\race 1080p.mkv':
  Metadata:
    ENCODER         : Lavf61.1.100
  Duration: 01:51:27.13, start: -0.021000, bitrate: 19213 kb/s
  Stream #0:0: Video: hevc (Rext), yuv444p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 60 fps, 60 tbr, 1k tbn
      Metadata:
        DURATION        : 00:17:54.184000000
  Stream #0:1: Audio: aac (LC), 48000 Hz, stereo, fltp
      Metadata:
        DURATION        : 01:51:27.125000000
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
Output #0, matroska, to 'C:\Users\die4e\Videos\race 2024-08-23\race 1080p draft 1.mkv':
  Metadata:
    encoder         : Lavf61.1.100
  Stream #0:0: Video: hevc (Rext), yuv444p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 60 fps, 60 tbr, 1k tbn
      Metadata:
        DURATION        : 00:17:54.184000000
  Stream #0:1: Audio: aac (LC) ([255][0][0][0] / 0x00FF), 48000 Hz, stereo, fltp
      Metadata:
        DURATION        : 01:51:27.125000000
Press [q] to stop, [?] for help
[out#0/matroska @ 000001e2a8308d00] video:15547720KiB audio:133768KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 0.017288%
size=15684199KiB time=00:17:54.12 bitrate=119618.8kbits/s speed=15.2x