使用非root用户时的ffmpeg错误 [英] ffmpeg error when using non root user
本文介绍了使用非root用户时的ffmpeg错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我已经安装了ffmpeg，如果您是root用户或使用sudo，它可以完美地工作，但是当尝试以非root用户身份使用它时会出错.我已经在测试VPS上执行了相同的安装，并且安装没有问题，因此似乎与该cPanel服务器隔离.我无法确定原因.
I have installed ffmpeg and it works perfect if you are root or using sudo but it errors out when trying to use it as a non-root user. I have performed the same install on a test VPS and it installs without issue so it appears to be isolated to this cPanel server. I haven't been able to identify why.
非根:
> ffmpeg -v debug -i 1.mov 1.avi ffmpeg version N-65949-g0ddb051
> Copyright (c) 2000-2014 the FFmpeg developers built on Aug 28 2014
> 11:39:47 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-4)
> configuration: --enable-gpl --enable-libmp3lame --enable-libvorbis
> --enable-libvpx --enable-libx264 libavutil 54. 7.100 / 54. 7.100 libavcodec 56. 0.101 / 56. 0.101 libavformat 56. 3.100 / 56. 3.100 libavdevice 56. 0.100 / 56. 0.100 libavfilter 5. 0.103 / 5. 0.103 libswscale 3. 0.100 /
> 3. 0.100 libswresample 1. 1.100 / 1. 1.100 libpostproc 53. 0.100 / 53. 0.100 Splitting the commandline. Reading option '-v' ... matched as option 'v' (set logging level) with argument 'debug'.
> Reading option '-i' ... matched as input file with argument '1.mov'.
> Reading option '1.avi' ... matched as output file. Finished splitting
> the commandline. Parsing a group of options: global . Applying option
> v (set logging level) with argument debug. Successfully parsed a group
> of options. Parsing a group of options: input file 1.mov. Successfully
> parsed a group of options. Opening an input file: 1.mov.
> [mov,mp4,m4a,3gp,3g2,mj2 @ 0x348fc20] Format mov,mp4,m4a,3gp,3g2,mj2
> probed with size=2048 and score=100 [mov,mp4,m4a,3gp,3g2,mj2 @
> 0x348fc20] ISO: File Type Major Brand: qt [mov,mp4,m4a,3gp,3g2,mj2 @
> 0x348fc20] Before avformat_find_stream_info() pos: 698348 bytes
> read:39602 seeks:1 [mov,mp4,m4a,3gp,3g2,mj2 @ 0x348fc20] All info
> found [mov,mp4,m4a,3gp,3g2,mj2 @ 0x348fc20] After
> avformat_find_stream_info() pos: 169190 bytes read:2333362 seeks:67
> frames:148 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mov':
> Metadata:
> major_brand : qt
> minor_version : 0
> compatible_brands: qt
> creation_time : 2014-06-05 04:40:27
> model : iPhone 5
> model-eng : iPhone 5
> encoder : 7.1.1
> encoder-eng : 7.1.1
> date : 2014-06-04T21:40:27-0700
> date-eng : 2014-06-04T21:40:27-0700
> make : Apple
> make-eng : Apple Duration: 00:00:07.15, start: 0.000023, bitrate: 781 kb/s
> Stream #0:0(und), 41, 1/600: Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m), 480x360, 1/1200, 710 kb/s, 29.09
> fps, 600 tbr, 600 tbn, 1200 tbc (default)
> Metadata:
> rotate : 90
> creation_time : 2014-06-05 04:40:27
> handler_name : Core Media Data Handler
> encoder : H.264
> Side data:
> displaymatrix: rotation of -90.00 degrees
> Stream #0:1(und), 107, 1/44100: Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 63 kb/s (default)
> Metadata:
> creation_time : 2014-06-05 04:40:27
> handler_name : Core Media Data Handler Successfully opened the file. Parsing a group of options: output file 1.avi. Successfully
> parsed a group of options. Opening an output file: 1.avi. Successfully
> opened the file. detected 24 logical cores [graph 0 input from stream
> 0:0 @ 0x34aa3a0] Setting 'video_size' to value '480x360' [graph 0
> input from stream 0:0 @ 0x34aa3a0] Setting 'pix_fmt' to value '0'
> [graph 0 input from stream 0:0 @ 0x34aa3a0] Setting 'time_base' to
> value '1/600' [graph 0 input from stream 0:0 @ 0x34aa3a0] Setting
> 'pixel_aspect' to value '0/1' [graph 0 input from stream 0:0 @
> 0x34aa3a0] Setting 'sws_param' to value 'flags=2' [graph 0 input from
> stream 0:0 @ 0x34aa3a0] Setting 'frame_rate' to value '320/11' [graph
> 0 input from stream 0:0 @ 0x34aa3a0] w:480 h:360 pixfmt:yuv420p
> tb:1/600 fr:320/11 sar:0/1 sws_param:flags=2 [format @ 0x3496b00]
> compat: called with args=[yuv420p] [format @ 0x3496b00] Setting
> 'pix_fmts' to value 'yuv420p' [AVFilterGraph @ 0x348f320]
> query_formats: 4 queried, 3 merged, 0 already done, 0 delayed
> [AVFilterGraph @ 0x34bbe60] Error initializing threading.
> [AVFilterGraph @ 0x34bbe60] Error creating filter 'anull' Error
> opening filters! [AVIOContext @ 0x34967c0] Statistics: 0 seeks, 0
> writeouts [AVIOContext @ 0x348f1e0] Statistics: 2333362 bytes read, 67
> seeks
[AVFilterGraph @ 0x34bbe60]初始化线程出错.
[AVFilterGraph @ 0x34bbe60]创建过滤器"anull"时出错，错误
打开过滤器！
[AVFilterGraph @ 0x34bbe60] Error initializing threading.
[AVFilterGraph @ 0x34bbe60] Error creating filter 'anull' Error
opening filters!
作为根:
ffmpeg -v verbose -i 1.mov 1.avi
ffmpeg version N-65949-g0ddb051 Copyright (c) 2000-2014 the FFmpeg developers
built on Aug 28 2014 11:39:47 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-4)
configuration: --enable-gpl --enable-libmp3lame --enable-libvorbis --enable-libvpx --enable-libx264
libavutil 54. 7.100 / 54. 7.100
libavcodec 56. 0.101 / 56. 0.101
libavformat 56. 3.100 / 56. 3.100
libavdevice 56. 0.100 / 56. 0.100
libavfilter 5. 0.103 / 5. 0.103
libswscale 3. 0.100 / 3. 0.100
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 0.100 / 53. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mov':
Metadata:
major_brand : qt
minor_version : 0
compatible_brands: qt
creation_time : 2014-06-05 04:40:27
model : iPhone 5
model-eng : iPhone 5
encoder : 7.1.1
encoder-eng : 7.1.1
date : 2014-06-04T21:40:27-0700
date-eng : 2014-06-04T21:40:27-0700
make : Apple
make-eng : Apple
Duration: 00:00:07.15, start: 0.000023, bitrate: 781 kb/s
Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m), 480x360, 710 kb/s, 29.09 fps, 600 tbr, 600 tbn, 1200 tbc (default)
Metadata:
rotate : 90
creation_time : 2014-06-05 04:40:27
handler_name : Core Media Data Handler
encoder : H.264
Side data:
displaymatrix: rotation of -90.00 degrees
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 63 kb/s (default)
Metadata:
creation_time : 2014-06-05 04:40:27
handler_name : Core Media Data Handler
[graph 0 input from stream 0:0 @ 0x27ed3a0] w:480 h:360 pixfmt:yuv420p tb:1/600 fr:320/11 sar:0/1 sws_param:flags=2
[graph 1 input from stream 0:1 @ 0x2800700] tb:1/44100 samplefmt:fltp samplerate:44100 chlayout:0x4
Output #0, avi, to '1.avi':
Metadata:
major_brand : qt
minor_version : 0
compatible_brands: qt
make-eng : Apple
model : iPhone 5
model-eng : iPhone 5
make : Apple
ISFT : Lavf56.3.100
ICRD : 2014-06-04T21:40:27-0700
date-eng : 2014-06-04T21:40:27-0700
Stream #0:0(und): Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 480x360, q=2-31, 200 kb/s, 29.09 fps, 29.09 tbn, 29.09 tbc (default)
Metadata:
rotate : 90
creation_time : 2014-06-05 04:40:27
handler_name : Core Media Data Handler
encoder : Lavc56.0.101 mpeg4
Stream #0:1(und): Audio: mp3 (libmp3lame) (U[0][0][0] / 0x0055), 44100 Hz, mono, fltp (default)
Metadata:
creation_time : 2014-06-05 04:40:27
handler_name : Core Media Data Handler
encoder : Lavc56.0.101 libmp3lame
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> mpeg4 (native))
Stream #0:1 -> #0:1 (aac (native) -> mp3 (libmp3lame))
Press [q] to stop, [?] for help
*** dropping frame 79 from stream 0 at ts 80
*** dropping frame 113 from stream 0 at ts 114
*** dropping frame 145 from stream 0 at ts 146
*** dropping frame 177 from stream 0 at ts 178
No more output streams to write to, finishing.
frame= 204 fps=0.0 q=27.2 Lsize= 348kB time=00:00:07.15 bitrate= 398.4kbits/s dup=0 drop=4
video:271kB audio:56kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 6.560985%
Input file #0 (1.mov):
Input stream #0:0 (video): 208 packets read (634624 bytes); 208 frames decoded;
Input stream #0:1 (audio): 308 packets read (56854 bytes); 308 frames decoded (315392 samples);
Total: 516 packets (691478 bytes) demuxed
Output file #0 (1.avi):
Output stream #0:0 (video): 204 frames encoded; 204 packets muxed (276993 bytes);
Output stream #0:1 (audio): 274 frames encoded (315392 samples); 275 packets muxed (57469 bytes);
Total: 479 packets (334462 bytes) muxed
strace和strace -e输出:
strace非根:
strace and strace -e outputs:
strace non root:
579 clone(child_stack=0x7fd3bfd07ff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS| CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7fd3bfd089d0, tls=0x7fd3bfd08700, child_tidptr=0x7fd3bfd089d0) = 3 2637
580 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fd3bed07000
581 mprotect(0x7fd3bed07000, 4096, PROT_NONE) = 0
582 clone(child_stack=0x7fd3bf506ff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS| CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7fd3bf5079d0, tls=0x7fd3bf507700, child_tidptr=0x7fd3bf5079d0) = - 1 EAGAIN (Resource temporarily unavailable)
583 futex(0x253b420, FUTEX_WAKE_PRIVATE, 1) = 1
584 futex(0x253b3f4, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x253b420, 4) = 2
585 futex(0x253b420, FUTEX_WAKE_PRIVATE, 1) = 1
586 futex(0x7fd3c2d0e9d0, FUTEX_WAIT, 32631, NULL) = 0
587 munmap(0x7fd3bed07000, 8392704) = 0
588 munmap(0x7fd3c250e000, 8392704) = 0
589 munmap(0x7fd3c1d0d000, 8392704) = 0
590 munmap(0x7fd3c150c000, 8392704) = 0
591 write(2, "\33[1;32m[AVFilterGraph @ 0x253b0a"..., 39[AVFilterGraph @ 0x253b0a0] ) = 39
592 write(2, "\33[1;31mError initializing thread"..., 41Error initializing threading.
593 ) = 41
594 write(2, "\33[1;32m[AVFilterGraph @ 0x253b0a"..., 39[AVFilterGraph @ 0x253b0a0] ) = 39
595 write(2, "\33[1;31mError creating filter 'an"..., 41Error creating filter 'anull'
596 ) = 41
597 write(2, "\33[4;31mError opening filters!\n\33["..., 34Error opening filters!
598 ) = 34
strace -e非根用户:
strace -e open ffmpeg -i 1.mov 5.avi
open("/etc/ld.so.cache", O_RDONLY) = 3
open("/lib64/libasound.so.2", O_RDONLY) = 3
open("/usr/lib64/libSDL-1.2.so.0", O_RDONLY) = 3
open("/lib64/libpthread.so.0", O_RDONLY) = 3
open("/usr/lib64/libx264.so.142", O_RDONLY) = 3
open("/usr/lib64/libvpx.so.0", O_RDONLY) = 3
open("/usr/local/lib/libvorbisenc.so.2", O_RDONLY) = 3
open("/usr/local/lib/libvorbis.so.0", O_RDONLY) = 3
open("/usr/local/lib/libmp3lame.so.0", O_RDONLY) = 3
open("/lib64/libm.so.6", O_RDONLY) = 3
open("/lib64/libbz2.so.1", O_RDONLY) = 3
open("/usr/local/lib/libz.so.1", O_RDONLY) = 3
open("/lib64/librt.so.1", O_RDONLY) = 3
open("/lib64/libc.so.6", O_RDONLY) = 3
open("/lib64/libdl.so.2", O_RDONLY) = 3
open("/usr/local/lib/libogg.so.0", O_RDONLY) = 3
ffmpeg version N-65949-g0ddb051 Copyright (c) 2000-2014 the FFmpeg developers
built on Aug 28 2014 11:39:47 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-4)
configuration: --enable-gpl --enable-libmp3lame --enable-libvorbis --enable-libvpx --enable-libx264
libavutil 54. 7.100 / 54. 7.100
libavcodec 56. 0.101 / 56. 0.101
libavformat 56. 3.100 / 56. 3.100
libavdevice 56. 0.100 / 56. 0.100
libavfilter 5. 0.103 / 5. 0.103
libswscale 3. 0.100 / 3. 0.100
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 0.100 / 53. 0.100
open("1.mov", O_RDONLY|O_CLOEXEC) = 3
open("/etc/localtime", O_RDONLY) = 4
open("/proc/meminfo", O_RDONLY|O_CLOEXEC) = 4
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mov':
Metadata:
major_brand : qt
minor_version : 0
compatible_brands: qt
creation_time : 2014-06-05 04:40:27
model : iPhone 5
model-eng : iPhone 5
encoder : 7.1.1
encoder-eng : 7.1.1
date : 2014-06-04T21:40:27-0700
date-eng : 2014-06-04T21:40:27-0700
make : Apple
make-eng : Apple
Duration: 00:00:07.15, start: 0.000023, bitrate: 781 kb/s
Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m), 480x360, 710 kb/s, 29.09 fps, 600 tbr, 600 tbn, 1200 tbc (default)
Metadata:
rotate : 90
creation_time : 2014-06-05 04:40:27
handler_name : Core Media Data Handler
encoder : H.264
Side data:
displaymatrix: rotation of -90.00 degrees
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 63 kb/s (default)
Metadata:
creation_time : 2014-06-05 04:40:27
handler_name : Core Media Data Handler
open("5.avi", O_WRONLY|O_CREAT|O_TRUNC|O_CLOEXEC, 0666) = 4
[AVFilterGraph @ 0x26ff4a0] Error initializing threading.
[AVFilterGraph @ 0x26ff4a0] Error creating filter 'anull'
Error opening filters!
跟踪根:
579 clone(child_stack=0x7f4eb7c34ff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS| CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f4eb7c359d0, tls=0x7f4eb7c35700, child_tidptr=0x7f4eb7c359d0) = 3 383
580 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f4eb6c34000
581 mprotect(0x7f4eb6c34000, 4096, PROT_NONE) = 0
582 clone(child_stack=0x7f4eb7433ff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS| CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f4eb74349d0, tls=0x7f4eb7434700, child_tidptr=0x7f4eb74349d0) = 3 384
583 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f4eb6433000
584 mprotect(0x7f4eb6433000, 4096, PROT_NONE) = 0
585 clone(child_stack=0x7f4eb6c32ff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS| CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f4eb6c339d0, tls=0x7f4eb6c33700, child_tidptr=0x7f4eb6c339d0) = 3 385
586 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f4eb5c32000
587 mprotect(0x7f4eb5c32000, 4096, PROT_NONE) = 0
588 clone(child_stack=0x7f4eb6431ff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS| CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f4eb64329d0, tls=0x7f4eb6432700, child_tidptr=0x7f4eb64329d0) = 3 386
589 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f4eb5431000
590 mprotect(0x7f4eb5431000, 4096, PROT_NONE) = 0
591 clone(child_stack=0x7f4eb5c30ff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS| CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f4eb5c319d0, tls=0x7f4eb5c31700, child_tidptr=0x7f4eb5c319d0) = 3 387
592 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f4eb4c30000
593 mprotect(0x7f4eb4c30000, 4096, PROT_NONE) = 0
594 clone(child_stack=0x7f4eb542fff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS| CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f4eb54309d0, tls=0x7f4eb5430700, child_tidptr=0x7f4eb54309d0) = 3 388
595 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f4eb442f000
596 mprotect(0x7f4eb442f000, 4096, PROT_NONE) = 0
597 clone(child_stack=0x7f4eb4c2eff0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS| CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7f4eb4c2f9d0, tls=0x7f4eb4c2f700, child_tidptr=0x7f4eb4c2f9d0) = 3 389
598 mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f4eb3c2e000
strace -e根:
strace -e open ffmpeg -i 1.mov 5.avi
open("/etc/ld.so.cache", O_RDONLY) = 3
open("/lib64/libasound.so.2", O_RDONLY) = 3
open("/usr/lib64/libSDL-1.2.so.0", O_RDONLY) = 3
open("/lib64/libpthread.so.0", O_RDONLY) = 3
open("/usr/lib64/libx264.so.142", O_RDONLY) = 3
open("/usr/lib64/libvpx.so.0", O_RDONLY) = 3
open("/usr/local/lib/libvorbisenc.so.2", O_RDONLY) = 3
open("/usr/local/lib/libvorbis.so.0", O_RDONLY) = 3
open("/usr/local/lib/libmp3lame.so.0", O_RDONLY) = 3
open("/lib64/libm.so.6", O_RDONLY) = 3
open("/lib64/libbz2.so.1", O_RDONLY) = 3
open("/usr/local/lib/libz.so.1", O_RDONLY) = 3
open("/lib64/librt.so.1", O_RDONLY) = 3
open("/lib64/libc.so.6", O_RDONLY) = 3
open("/lib64/libdl.so.2", O_RDONLY) = 3
open("/usr/local/lib/libogg.so.0", O_RDONLY) = 3
ffmpeg version N-65957-gc6a3b00 Copyright (c) 2000-2014 the FFmpeg developers
built on Aug 28 2014 13:37:32 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-4)
configuration: --enable-gpl --enable-libmp3lame --enable-libvorbis --enable-libvpx --enable-libx264 --prefix=/usr --libdir=/usr/lib64 --enable-gpl --enable-libmp3lame --enable-libvorbis --enable-libvpx --enable-libx264
libavutil 54. 7.100 / 54. 7.100
libavcodec 56. 0.101 / 56. 0.101
libavformat 56. 3.100 / 56. 3.100
libavdevice 56. 0.100 / 56. 0.100
libavfilter 5. 0.103 / 5. 0.103
libswscale 3. 0.100 / 3. 0.100
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 0.100 / 53. 0.100
open("1.mov", O_RDONLY|O_CLOEXEC) = 3
open("/etc/localtime", O_RDONLY) = 4
open("/proc/meminfo", O_RDONLY|O_CLOEXEC) = 4
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '1.mov':
Metadata:
major_brand : qt
minor_version : 0
compatible_brands: qt
creation_time : 2014-06-05 04:40:27
model : iPhone 5
model-eng : iPhone 5
encoder : 7.1.1
encoder-eng : 7.1.1
date : 2014-06-04T21:40:27-0700
date-eng : 2014-06-04T21:40:27-0700
make : Apple
make-eng : Apple
Duration: 00:00:07.15, start: 0.000023, bitrate: 781 kb/s
Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m), 480x360, 710 kb/s, 29.09 fps, 600 tbr, 600 tbn, 1200 tbc (default)
Metadata:
rotate : 90
creation_time : 2014-06-05 04:40:27
handler_name : Core Media Data Handler
encoder : H.264
Side data:
displaymatrix: rotation of -90.00 degrees
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 63 kb/s (default)
Metadata:
creation_time : 2014-06-05 04:40:27
handler_name : Core Media Data Handler
File '5.avi' already exists. Overwrite ? [y/N] y
open("5.avi", O_WRONLY|O_CREAT|O_TRUNC|O_CLOEXEC, 0666) = 4
Output #0, avi, to '5.avi':
Metadata:
major_brand : qt
minor_version : 0
compatible_brands: qt
make-eng : Apple
model : iPhone 5
model-eng : iPhone 5
make : Apple
ISFT : Lavf56.3.100
ICRD : 2014-06-04T21:40:27-0700
date-eng : 2014-06-04T21:40:27-0700
Stream #0:0(und): Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 480x360, q=2-31, 200 kb/s, 29.09 fps, 29.09 tbn, 29.09 tbc (default)
Metadata:
rotate : 90
creation_time : 2014-06-05 04:40:27
handler_name : Core Media Data Handler
encoder : Lavc56.0.101 mpeg4
Stream #0:1(und): Audio: mp3 (libmp3lame) (U[0][0][0] / 0x0055), 44100 Hz, mono, fltp (default)
Metadata:
creation_time : 2014-06-05 04:40:27
handler_name : Core Media Data Handler
encoder : Lavc56.0.101 libmp3lame
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> mpeg4 (native))
Stream #0:1 -> #0:1 (aac (native) -> mp3 (libmp3lame))
Press [q] to stop, [?] for help
frame= 204 fps=0.0 q=27.2 Lsize= 348kB time=00:00:07.15 bitrate= 398.4kbits/s dup=0 drop=4
video:271kB audio:56kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 6.560985%
推荐答案
strace输出显示非root用户运行使用EAGAIN再次调用clone失败.根据手册页 clone(2)和 fork(2)，这意味着系统已达到数量上限用户可以创建的线程数.
The strace output shows that the non-root run fails its second call to clone with EAGAIN. According to the manual pages clone(2) and fork(2), this means the system has reached a limit on the number of threads the user may create.
可能的罪魁祸首是每个进程的资源限制.运行ulimit -u以查看当前进程的限制是多少，然后尝试提高该限制并重试.
The likely culprit is the per-process resource limit. Run ulimit -u to see what the current process's limit is, then try raising it and trying again.
这篇关于使用非root用户时的ffmpeg错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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