Speedup export fail above certain speed


#1

Hi,

I was playing around with speeding up videos and noticed sometimes it would fail to export at 0%.

The source file is 12min, 2.10gig 1920x1080.
When I try to speed up the whole clip somewhere close to 60x it will fail to export.
I went up in 10’s and had no problem until I tried 60x, when I dropped down to 55 it worked fine. Somewhere between the 2 it becomes unhappy. I also tried a few values above 60 with no luck.

Log for the failed export
[h264 @ 0000000005aab640] Reinit context to 1920x1088, pix_fmt: yuvj420p
[h264 @ 0000000008baaa00] Reinit context to 1920x1088, pix_fmt: yuvj420p
[h264 @ 00000000089dd340] Reinit context to 1920x1088, pix_fmt: yuvj420p
[producer avformat] audio: total_streams 1 max_stream 1 total_channels 1 max_channels 1
[libx264 @ 00000000089c4e80] using SAR=1/1
[libx264 @ 00000000089c4e80] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 00000000089c4e80] profile High, level 4.2
[libx264 @ 00000000089c4e80] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - 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=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=1 keyint=300 keyint_min=30 scenecut=40 intra_refresh=0 rc_lookahead=30 rc=crf mbtree=1 crf=21.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[h264 @ 00000000089c6540] Reinit context to 1920x1088, pix_fmt: yuvj420p
[h264 @ 00000000089c8080] Reinit context to 1920x1088, pix_fmt: yuvj420p
[h264 @ 000000000b922240] Reinit context to 1920x1088, pix_fmt: yuvj420p
[producer avformat] F:\GoPro\2018-10-29\HERO+ LCD 2\GP010090.MP4
checking VFR: pkt.duration 1001
[filter swresample] 1(mono) f32le 2880000Hz -> 2(stereo) f32le 48000Hz
[filter swresample] swr_convert() failed. Alloc: -689 In: 48048 Out: -22
[h264 @ 00000000089c60c0] Reinit context to 1920x1088, pix_fmt: yuvj420p
[filter swresample] swr_convert() failed. Alloc: -689 In: 48048 Out: -22
Current Frame: 2, percentage: 0
Failed with exit code -1073741819


#2

This is fixed for the next version 19.01