On Wed, Feb 18, 2015 at 06:20:54PM -0800, Chris Kennedy wrote: > More details attached, debug level and gdb backtrace. Hopefully this > helps, and I will work on getting a file I can share showing the issue. > > Thanks > [...] > ffmpeg -nostdin -nostats -analyzeduration 774552000 -threads 1 -i input.avi > -threads 1 -vsync 0 -q:v 0 -an -vf trim=300:776,fps=fps=29.97,thumbnail=178 > video%02d.jpg > Returned: [Parsed_thumbnail_2 @ 0x2f4cac0] frame id #128 > (pts_time=351.785118) selected from a set of 178 images > WIP, backtrace and full debug ready, I am going to hunt now for the issue and > try to fix it: > Starting program: /opt/ffmpeg/ffmpeg -nostdin -nostats -analyzeduration > 774552000 -threads 1 -i input.avi -threads 1 -vsync 0 -q:v 0 -an -vf > trim=300:776,fps=fps=29.97,thumbnail=178 -loglevel debug video%02d.jpg > [Thread debugging using libthread_db enabled] > ffmpeg version n2.5.1-22-g26e5e17 Copyright (c) 2000-2014 the FFmpeg > developers > built on Feb 17 2015 15:59:56 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-11)
> configuration: --prefix=/usr --disable-outdev=sdl --disable-ffplay > --disable-ffserver --enable-gpl --enable-nonfree --disable-shared > --disable-optimizations --disable-stripping --enable-debug=3 --enable-static > --disable-mmx --disable-mmxext --disable-ssse3 --extra-cflags='-O0 > -fno-inline' Weird configuration... You can just use ffmpeg_g. And use runtime -cpuflags instead of disabling ASM at configure. > libavutil 54. 15.100 / 54. 15.100 > libavcodec 56. 13.100 / 56. 13.100 > libavformat 56. 15.102 / 56. 15.102 > libavdevice 56. 3.100 / 56. 3.100 > libavfilter 5. 2.103 / 5. 2.103 > libswscale 3. 1.101 / 3. 1.101 > libswresample 1. 1.100 / 1. 1.100 > libpostproc 53. 3.100 / 53. 3.100 > Splitting the commandline. > Reading option '-nostdin' ... matched as option 'stdin' (enable or disable > interaction on standard input) with argument 0. > Reading option '-nostats' ... matched as option 'stats' (print progress > report during encoding) with argument 0. > Reading option '-analyzeduration' ... matched as AVOption 'analyzeduration' > with argument '774552000'. > Reading option '-threads' ... matched as AVOption 'threads' with argument '1'. > Reading option '-i' ... matched as input file with argument 'input.avi'. > Reading option '-threads' ... matched as AVOption 'threads' with argument '1'. > Reading option '-vsync' ... matched as option 'vsync' (video sync method) > with argument '0'. > Reading option '-q:v' ... matched as option 'q' (use fixed quality scale > (VBR)) with argument '0'. > Reading option '-an' ... matched as option 'an' (disable audio) with argument > '1'. > Reading option '-vf' ... matched as option 'vf' (set video filters) with > argument 'trim=300:776,fps=fps=29.97,thumbnail=178'. > Reading option '-loglevel' ... matched as option 'loglevel' (set logging > level) with argument 'debug'. > Reading option 'video%02d.jpg' ... matched as output file. > Finished splitting the commandline. > Parsing a group of options: global . > Applying option nostdin (enable or disable interaction on standard input) > with argument 0. > Applying option nostats (print progress report during encoding) with argument > 0. > Applying option vsync (video sync method) with argument 0. > Applying option loglevel (set logging level) with argument debug. > Successfully parsed a group of options. > Parsing a group of options: input file input.avi. > Successfully parsed a group of options. > Opening an input file: input.avi. > [avi @ 0x1c8d9b0] Format avi probed with size=2048 and score=100 > [avi @ 0x1c8e330] use odml:1 > [avi @ 0x1c8d9b0] Before avformat_find_stream_info() pos: 9986 bytes > read:1906544 seeks:4 > [avi @ 0x1c8d9b0] All info found > rfps: 29.666667 0.013653 > Last message repeated 1 times > rfps: 29.750000 0.007182 > Last message repeated 1 times > rfps: 29.833333 0.002772 > Last message repeated 1 times > rfps: 29.916667 0.000422 > Last message repeated 1 times > rfps: 30.000000 0.000133 > Last message repeated 1 times > rfps: 60.000000 0.000533 > Last message repeated 1 times > rfps: 120.000000 0.002132 > Last message repeated 1 times > rfps: 240.000000 0.008528 > Last message repeated 1 times > rfps: 29.970030 0.000000 > rfps: 59.940060 0.000000 > [avi @ 0x1c8d9b0] After avformat_find_stream_info() pos: 334549 bytes > read:2201456 seeks:4 frames:97 > Input #0, avi, from 'input.avi': > Metadata: > encoder : Lavf52.62.0 > Duration: 00:25:49.10, start: 0.000000, bitrate: 1644 kb/s > Stream #0:0, 41, 1001/30000: Video: mpeg4 (Simple Profile) (XVID / > 0x44495658), yuv420p(left), 624x480 [SAR 1:1 DAR 13:10], 1/30000, 1439 kb/s, > 29.97 fps, 29.97 tbr, 29.97 tbn, 30k tbc > Stream #0:1, 56, 3/125: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, > s16p, 192 kb/s > Successfully opened the file. > Parsing a group of options: output file video%02d.jpg. > Applying option q:v (use fixed quality scale (VBR)) with argument 0. > Applying option an (disable audio) with argument 1. > Applying option vf (set video filters) with argument > trim=300:776,fps=fps=29.97,thumbnail=178. > Successfully parsed a group of options. > Opening an output file: video%02d.jpg. > Successfully opened the file. > [Parsed_trim_0 @ 0x1c95430] Setting 'starti' to value '300' > [Parsed_trim_0 @ 0x1c95430] Setting 'endi' to value '776' > [Parsed_fps_1 @ 0x1c85a60] Setting 'fps' to value '29.97' > [Parsed_fps_1 @ 0x1c85a60] fps=2997/100 > [Parsed_thumbnail_2 @ 0x1c8d810] Setting 'n' to value '178' > [Parsed_thumbnail_2 @ 0x1c8d810] batch size: 178 frames > [graph 0 input from stream 0:0 @ 0x1c8d620] Setting 'video_size' to value > '624x480' > [graph 0 input from stream 0:0 @ 0x1c8d620] Setting 'pix_fmt' to value '0' > [graph 0 input from stream 0:0 @ 0x1c8d620] Setting 'time_base' to value > '1001/30000' > [graph 0 input from stream 0:0 @ 0x1c8d620] Setting 'pixel_aspect' to value > '1/1' > [graph 0 input from stream 0:0 @ 0x1c8d620] Setting 'sws_param' to value > 'flags=2' > [graph 0 input from stream 0:0 @ 0x1c8d620] Setting 'frame_rate' to value > '30000/1001' > [graph 0 input from stream 0:0 @ 0x1c8d620] w:624 h:480 pixfmt:yuv420p > tb:1001/30000 fr:30000/1001 sar:1/1 sws_param:flags=2 > [format @ 0x1d15cd0] compat: called with args=[yuvj420p|yuvj422p|yuvj444p] > [format @ 0x1d15cd0] Setting 'pix_fmts' to value 'yuvj420p|yuvj422p|yuvj444p' > [auto-inserted scaler 0 @ 0x1d16b30] Setting 'flags' to value '0x4' > [auto-inserted scaler 0 @ 0x1d16b30] w:iw h:ih flags:'0x4' interl:0 > [Parsed_thumbnail_2 @ 0x1c8d810] auto-inserting filter 'auto-inserted scaler > 0' between the filter 'Parsed_fps_1' and the filter 'Parsed_thumbnail_2' > [auto-inserted scaler 1 @ 0x1d164e0] Setting 'flags' to value '0x4' > [auto-inserted scaler 1 @ 0x1d164e0] w:iw h:ih flags:'0x4' interl:0 > [format @ 0x1d15cd0] auto-inserting filter 'auto-inserted scaler 1' between > the filter 'Parsed_thumbnail_2' and the filter 'format' > [AVFilterGraph @ 0x1c85cb0] query_formats: 6 queried, 3 merged, 2 already > done, 0 delayed > [auto-inserted scaler 0 @ 0x1d16b30] picking rgb24 out of 2 ref:yuv420p > alpha:0 > [auto-inserted scaler 1 @ 0x1d164e0] picking yuvj444p out of 3 ref:rgb24 > alpha:0 > [swscaler @ 0x1c85d20] No accelerated colorspace conversion found from > yuv420p to rgb24. > [auto-inserted scaler 0 @ 0x1d16b30] w:624 h:480 fmt:yuv420p sar:1/1 -> w:624 > h:480 fmt:rgb24 sar:1/1 flags:0x4 > [swscaler @ 0x1ca8be0] deprecated pixel format used, make sure you did set > range correctly > [auto-inserted scaler 1 @ 0x1d164e0] w:624 h:480 fmt:rgb24 sar:1/1 -> w:624 > h:480 fmt:yuvj444p sar:1/1 flags:0x4 > [mjpeg @ 0x1d15660] intra_quant_bias = 96 inter_quant_bias = 0 > Output #0, image2, to 'video%02d.jpg': > Metadata: > encoder : Lavf56.15.102 > Stream #0:0, 0, 100/2997: Video: mjpeg, yuvj444p(pc, left), 624x480 [SAR 1:1 > DAR 13:10], 100/2997, q=2-31, 200 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc > Metadata: > encoder : Lavc56.13.100 mjpeg > Stream mapping: > Stream #0:0 -> #0:0 (mpeg4 (native) -> mjpeg (native)) > [Parsed_thumbnail_2 @ 0x1c8d810] frame id #147 (pts_time=304.904905) selected > from a set of 178 images > [AVIOContext @ 0x1f4c140] Statistics: 0 seeks, 2 writeouts > [Parsed_thumbnail_2 @ 0x1c8d810] frame id #129 (pts_time=310.243577) selected > from a set of 178 images > [AVIOContext @ 0x6ee8cf0] Statistics: 0 seeks, 2 writeouts > [Parsed_thumbnail_2 @ 0x1c8d810] frame id #43 (pts_time=313.313313) selected > from a set of 178 images > [AVIOContext @ 0x1d39a60] Statistics: 0 seeks, 2 writeouts > [Parsed_thumbnail_2 @ 0x1c8d810] frame id #88 (pts_time=320.754087) selected > from a set of 178 images > [AVIOContext @ 0x59a9d90] Statistics: 0 seeks, 2 writeouts > [Parsed_thumbnail_2 @ 0x1c8d810] frame id #131 (pts_time=328.128128) selected > from a set of 178 images > [AVIOContext @ 0x4f20850] Statistics: 0 seeks, 2 writeouts > [Parsed_thumbnail_2 @ 0x1c8d810] frame id #34 (pts_time=330.830831) selected > from a set of 178 images > [AVIOContext @ 0x1d39a40] Statistics: 0 seeks, 2 writeouts > [Parsed_thumbnail_2 @ 0x1c8d810] frame id #147 (pts_time=340.540541) selected > from a set of 178 images > [AVIOContext @ 0x6ee3b00] Statistics: 0 seeks, 2 writeouts > [Parsed_thumbnail_2 @ 0x1c8d810] frame id #138 (pts_time=346.179513) selected > from a set of 178 images > [AVIOContext @ 0x59b4e10] Statistics: 0 seeks, 2 writeouts > [Parsed_thumbnail_2 @ 0x1c8d810] frame id #128 (pts_time=351.785118) selected > from a set of 178 images > [AVIOContext @ 0x1fecb30] Statistics: 0 seeks, 3 writeouts > Program received signal SIGSEGV, Segmentation fault. > _int_malloc (av=0x7ffff7124e80, bytes=<value optimized out>) at malloc.c:4515 > 4515 fwd->fd->bk_nextsize = victim->bk_nextsize->fd_nextsize = victim; > (gdb) backtrace > #0 _int_malloc (av=0x7ffff7124e80, bytes=<value optimized out>) at > malloc.c:4515 > #1 0x00007ffff6e0f6b1 in __libc_malloc (bytes=683) at malloc.c:3664 > #2 0x0000000001035633 in av_realloc (ptr=0x0, size=683) at libavutil/mem.c:166 > #3 0x0000000001026c72 in av_buffer_realloc (pbuf=0x7fffffffd160, size=683) at > libavutil/buffer.c:165 > #4 0x00000000006fb572 in packet_alloc (buf=0x7fffffffd160, size=651) at > libavcodec/avpacket.c:74 > #5 0x00000000006fb5d5 in av_new_packet (pkt=0x7fffffffd400, size=651) at > libavcodec/avpacket.c:86 > #6 0x00000000006fb6dd in av_grow_packet (pkt=0x7fffffffd400, grow_by=651) at > libavcodec/avpacket.c:116 > #7 0x00000000006a4b31 in append_packet_chunked (s=0x1c964b0, > pkt=0x7fffffffd400, size=651) at libavformat/utils.c:217 > #8 0x00000000006a4c6b in av_get_packet (s=0x1c964b0, pkt=0x7fffffffd400, > size=651) at libavformat/utils.c:245 > #9 0x0000000000576fb1 in avi_read_packet (s=0x1c8d9b0, pkt=0x7fffffffd400) at > libavformat/avidec.c:1363 > #10 0x00000000006a6162 in ff_read_packet (s=0x1c8d9b0, pkt=0x7fffffffd400) at > libavformat/utils.c:662 > #11 0x00000000006a8900 in read_frame_internal (s=0x1c8d9b0, > pkt=0x7fffffffd700) at libavformat/utils.c:1312 > #12 0x00000000006a9528 in av_read_frame (s=0x1c8d9b0, pkt=0x7fffffffd700) at > libavformat/utils.c:1471 > #13 0x00000000004277e5 in get_input_packet (f=0x1c8e7b0, pkt=0x7fffffffd700) > at ffmpeg.c:3381 > #14 0x000000000042790c in process_input (file_index=0) at ffmpeg.c:3418 > #15 0x0000000000429397 in transcode_step () at ffmpeg.c:3719 > #16 0x00000000004294a5 in transcode () at ffmpeg.c:3771 > #17 0x00000000004299b3 in main (argc=21, argv=0x7fffffffdcf8) at ffmpeg.c:3951 This doesn't really look like an overread, more like you hit a memory limit and your malloc implementation doesn't like it, or something along these lines (178 frames is a lot). Keep in mind that thumbnail might not be the best solution to getting thumb. Using scene detection in select filter and pick the Nth scene change might pick a better one, with less memory usage. You might want to try valgrind to make sure it's not an overread/write. -- Clément B.
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