Video File Crashes LibreELEC 11.0.3 on Raspberry Pi 4

bikeseat · August 16, 2023 at 7:16 AM

Doesn't crash using Kodi on macOS.

This file was created using tvheadend recording a terrestrial tv broadcast.

Here is the log file:

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And here is a trimmed file that causes the crash: https://easyupload.io/c5m5x0

md5 of the file in case that matters

466f860c245b3b97b6794b1ee741130b Jeopardy-2023-08-15_19:30-crashesKodi.ts

**chewitt** · August 16, 2023 at 2:16 PM

Can you try a current LE12 nightly? .. I didn't test with LE11 but with my own LE12 image it definitely has issues but didn't crash.

**popcornmix** · August 16, 2023 at 2:38 PM

I tested this file with mplayer on my x86 Ubuntu laptop.

It played for a while then got very confused

Code

Error while decoding frame! (-1094995529)
A:  16.0 V:  15.7 A-V:  0.305 ct: -1.019 791/790 15%  3%  0.8% 0 0
Warning! FPS changed 59.940 -> 14.104  (45.836517) [7]
[mpeg2video @ 0x7ffff6c11ae0]slice below image (160 >= 93)
Error while decoding frame! (-1094995529)
A:  16.1 V:  15.7 A-V:  0.403 ct: -1.004 794/793 14%  3%  0.8% 0 0
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
[swscaler @ 0x7ffff78f4f20]bicubic scaler, from yuv444p to yuv420p using MMXEXT
VO: [xv] 1280x1488 => 2646x1488 Planar YV12

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and crashed here:

Code

Thread 1 "mplayer" received signal SIGSEGV, Segmentation fault.
ff_hscale8to15_X4_avx2.innerloop () at src/libswscale/x86/scale_avx2.asm:68
Downloading source file /build/ffmpeg-pdGKTL/ffmpeg-5.1.2/libswscale/x86//src/libswscale/x86/scale_avx2.asm
68      src/libswscale/x86/scale_avx2.asm: Directory not empty.
(gdb)
(gdb) bt
#0  ff_hscale8to15_X4_avx2.innerloop () at src/libswscale/x86/scale_avx2.asm:68
#1  0x00007ffff7862ba2 in chr_h_scale (c=0x555555db91c0, desc=0x5555559ed328, sliceY=<optimised out>, sliceH=1) at src/libswscale/hscale.c:189
#2  0x00007ffff789f148 in swscale
(dstSliceH=<optimised out>, dstSliceY=<optimised out>, dstStride=0x7fffffffbce0, dst=0x7fffffffbd10, srcSliceH=<optimised out>, srcSliceY=<optimised out>, srcStride=0x7fffffffbcd0, src=0x7fffffffbcf0, c=<optimised out>) at src/libswscale/swscale.c:471
#3  scale_internal
(c=<optimised out>, srcSlice=<optimised out>, srcStride=<optimised out>, srcSliceY=<optimised out>, srcSliceH=<optimised out>, dstSlice=<optimised out>, dstStride=<optimised out>, dstSliceY=<optimised out>, dstSliceH=<optimised out>) at src/libswscale/swscale.c:1043
#4  0x00007ffff789fc70 in sws_scale
(c=<optimised out>, srcSlice=srcSlice@entry=0x7fffffffbe10, srcStride=srcStride@entry=0x7fffffffbee0, srcSliceY=<optimised out>, srcSliceH=<optimised out>, dst=<optimised out>, dstStride=0x5555559eefc0) at src/libswscale/swscale.c:1210
#5  0x0000555555693013 in scale
(sws1=<optimised out>, sws2=0x0, src=<optimised out>, src_stride=0x7fffffffbee0, y=y@entry=64, h=<optimised out>, dst=0x5555559eefa0, dst_stride=0x5555559eefc0, interlaced=0) at libmpcodecs/vf_scale.c:449
#6  0x00005555556931fb in draw_slice
(vf=<optimised out>, src=<optimised out>, stride=<optimised out>, w=<optimised out>, h=<optimised out>, x=<optimised out>, y=64)
at libmpcodecs/vf_scale.c:461
#7  0x00005555557237c8 in draw_slice
(s=<optimised out>, src=<optimised out>, offset=<optimised out>, y=<optimised out>, type=<optimised out>, height=<optimised out>)
at libmpcodecs/vd_ffmpeg.c:566
#8  0x00007ffff63d6281 in ff_draw_horiz_band
(avctx=0x555555b5aa00, cur=<optimised out>, last=0x5555559f3f80, y=64, h=<optimised out>, picture_structure=3, first_field=0, low_delay=1)
at src/libavcodec/mpegutils.c:98
#9  0x00007ffff63e0459 in ff_mpeg_draw_horiz_band (s=s@entry=0x555555b5ae40, y=<optimised out>, h=<optimised out>) at src/libavcodec/mpegvideo_dec.c:545
#10 0x00007ffff639a65c in mpeg_decode_slice (s=s@entry=0x555555b5ae40, mb_y=mb_y@entry=4, buf=buf@entry=0x7fffffffc178, buf_size=buf_size@entry=3518)
at src/libavcodec/mpeg12dec.c:1834
#11 0x00007ffff639f027 in decode_chunks
(avctx=avctx@entry=0x555555b5aa00, picture=picture@entry=0x555555b5d4c0, got_output=got_output@entry=0x7fffffffc29c, buf=0x555555fadc80 "", buf_size=3644) at src/libavcodec/mpeg12dec.c:2743
#12 0x00007ffff639fba1 in mpeg_decode_frame (avctx=0x555555b5aa00, picture=0x555555b5d4c0, got_output=0x7fffffffc29c, avpkt=<optimised out>)
at src/libavcodec/mpeg12dec.c:2822
#13 0x00007ffff6083e21 in decode_simple_internal (discarded_samples=<synth_etic pointer>, frame=0x555555b5d4c0, avctx=0x555555b5aa00)
at src/libavcodec/decode.c:307
#14 decode_simple_receive_frame (frame=<optimised out>, avctx=<optimised out>) at src/libavcodec/decode.c:515
#15 decode_receive_frame_internal (avctx=avctx@entry=0x555555b5aa00, frame=0x555555b5d4c0) at src/libavcodec/decode.c:536

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It may be best to report this to ffmpeg - it is not a Pi specific or kodi/libreelec specific issue.

bikeseat · August 17, 2023 at 9:13 PM

Haven't had a chance to try LE12 nightly, but glad to hear it doesn't seem to crash it.

The file doesn't crash with my mpv install, but mine uses ffmpeg 6.0 so I wonder if they've already got a fix.

Thank you for the replies.

Code

foo@foo ~ > mpv -v ~/Jeopardy-2023-08-15_19:30-crashesKodi.ts
[cplayer] Command line options: '-v' '/Users/foo/Jeopardy-2023-08-15_19:30-crashesKodi.ts'
[cplayer] mpv 0.36.0 Copyright © 2000-2023 mpv/MPlayer/mplayer2 projects
[cplayer]  built on Sun Jul 23 05:10:36 2023
[cplayer] FFmpeg version: 6.0
[cplayer] FFmpeg library versions:
[cplayer]    libavutil       58.2.100
[cplayer]    libavcodec      60.3.100
[cplayer]    libavformat     60.3.100
[cplayer]    libswscale      7.1.100
[cplayer]    libavfilter     9.3.100
[cplayer]    libswresample   4.10.100
[cplayer]

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**popcornmix** · August 18, 2023 at 10:40 AM

Quote from bikeseat

Haven't had a chance to try LE12 nightly, but glad to hear it doesn't seem to crash it.

I think whether it crashes or not on a given platform is just luck - whether the invalid pointers accessed happen to point to previously allocated memory or not.

kodi didn't crash for me on RPiOS bookworm (using ffmpeg 5.1.3) but did on Ubuntu 23.04 (using ffmpeg 5.1.2).

But feel free to try LE12 and see if it is more reliable.

Video File Crashes LibreELEC 11.0.3 on Raspberry Pi 4

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