Export fails every time

I installed Shotcut today and followed the steps in the tutorial. All worked well to play an existing video, but Export fails every time. I’ve tried a couple of different source files, a couple of different output formats, and a couple of different destinations. I’ve also successfully saved the project file from Shotcut.

The steps that i follow which reproduce this every time are:

  • Start Shotcut
  • Open existing video (.wmv)
  • Play some or all of that video (it is only 1 minute and 29 seconds long)
  • Click “Export”
  • Click “YouTube” in the Export panel
  • Click “Export File” in the Export panel
  • Select a folder and filename “Shotcut export attempt.mp4” in the Export File system dialog and click “Save”
  • Jobs panel appears with a line saying “C:/Users/Dave/Videos/Shotcut export attempt.mp4” and “failed”
  • Right-click that line and select “View Log”
  • Job Log pops up. Contents are pasted below.

I’m sure I’m missing something simple, and would appreciate some help to move forward. Thank you!

Job Log Contents:

[asf @ 0000000008a38e40] Unsupported byte array in tag ASFLeakyBucketPairs.
[asf @ 0000000008a38e40] parser not found for codec wmav2, packets or times may be invalid.
[wmv3 @ 0000000008bcbc00] Extra data: 8 bits left, value: 0
[libx264 @ 0000000008b4d200] using SAR=8/9
[libx264 @ 0000000008b4d200] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[asf @ 0000000008a38e40] parser not found for codec wmav2, packets or times may be invalid.
[libx264 @ 0000000008b4d200] profile High, level 3.0
[libx264 @ 0000000008b4d200] 264 - core 152 r2854 e9a5903 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=2 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=6 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=2 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=1 keyint=15 keyint_min=1 scenecut=40 intra_refresh=0 rc_lookahead=15 rc=crf mbtree=1 crf=21.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[asf @ 0000000011859520] Unsupported byte array in tag ASFLeakyBucketPairs.
[asf @ 0000000011859520] parser not found for codec wmav2, packets or times may be invalid.
[consumer avformat] Could not open ‘C:/Users/Dave/Videos/Shotcut export attempt.mp4’
[wmv3 @ 0000000011e91600] Extra data: 8 bits left, value: 0
[asf @ 0000000011859520] parser not found for codec wmav2, packets or times may be invalid.
[aac @ 0000000008bcc600] Qavg: nan
[asf @ 0000000011d04020] Unsupported byte array in tag ASFLeakyBucketPairs.
[asf @ 0000000011d04020] parser not found for codec wmav2, packets or times may be invalid.
[wmv3 @ 0000000008a39440] Extra data: 8 bits left, value: 0
[asf @ 0000000011d04020] parser not found for codec wmav2, packets or times may be invalid.

[producer avformat] audio: total_streams 1 max_stream 0 total_channels 2 max_channels 2
[wmv3 @ 0000000011d04b80] Extra data: 8 bits left, value: 0
[producer avformat-novalidate] C:/Users/Dave/Videos/Mount Edith Cavell Slideshow/Mount Edith Cavell Slideshow.wmv
checking VFR: pkt.duration 0
Failed with exit code 1

GPU processing causes problems a lot. Disable it if you haven’t already.

Does the export fail immediately? Or do you have to wait for the progress to complete?

This line looks telling:

I wonder if Shotcut can’t write to that location for some reason. Maybe try running Shotcut as Administrator (right click and choose “Run As Administrator”) and see if that makes any difference.

Interesting as I developed the same problem after Exporting a couple of Videos earlier today.
Switched to a different Save Location and it went right through w/ no problems.
Switched back to the original Location and after a delay it also went through there also.

I know this is an old topic but I had this issue recently and fixed it by going to Settings>Proxy>Configure Hardware Encoder… and selecting Detect.

I realised I’d caused the problem, while trying to fix slow/choppy playback, by foolishly turning on all available encoders in the ‘Configure Hardware Encoder’ dialogue! In my case ‘Detect’ returned the selected encoders to h264_nvenc and hevc_nvenc

Hope that helps someone.

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