Batch file 由于错误，如何在FFMPEG中记录未转换的文件？

我正在使用单个批处理文件转换约30000个视频文件（每个文件具有不同数量的数据/视频/音频/字幕流）。我不需要数据/字幕流。这是我用于批处理文件的代码：

for %%i in (*.dat *.mpg *.mpeg) do ffmpeg -hide_banner -v info -n -i %%i -map 0 -dn -sn  -c:v libx264 -crf 20  -c:a aac -b:a 192k  "%%~ni.mp4" >> log.txt 2>&1
pause

我得到的结果日志文件的文件大小为1.67gb，要找到未转换文件的错误对我来说非常困难

成功转换文件的示例在日志文件中如下所示：

    Input #0, mpeg, from '571317.mpg':
  Duration: 00:05:06.02, start: 0.060000, bitrate: 2991 kb/s
    Stream #0:0[0x1bf]: Data: dvd_nav_packet
    Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, smpte170m, top first), 720x480 [SAR 8:9 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    Stream #0:2[0x81]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
    Stream #0:3[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 224 kb/s
Stream mapping:
  Stream #0:1 -> #0:0 (mpeg2video (native) -> h264 (libx264))
  Stream #0:2 -> #0:1 (ac3 (native) -> aac (native))
  Stream #0:3 -> #0:2 (mp2 (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 000000000043c3a0] using SAR=8/9
[libx264 @ 000000000043c3a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 000000000043c3a0] profile High, level 3.0
[libx264 @ 000000000043c3a0] 264 - core 148 r2762 90a61ec - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 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=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=20.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'F:\571317.mp4':
  Metadata:
    encoder         : Lavf57.71.100
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p(top coded first (swapped)), 720x480 [SAR 8:9 DAR 4:3], q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc
    Metadata:
      encoder         : Lavc57.89.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    Stream #0:1: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 192 kb/s
    Metadata:
      encoder         : Lavc57.89.100 aac
    Stream #0:2: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 192 kb/s
    Metadata:
      encoder         : Lavc57.89.100 aac
frame=   83 fps=0.0 q=26.0 size=     168kB time=00:00:02.70 bitrate= 508.4kbits/s speed=5.26x    
frame=  132 fps=128 q=26.0 size=     660kB time=00:00:04.41 bitrate=1224.4kbits/s speed=4.29x    
frame=  182 fps=118 q=26.0 size=    1126kB time=00:00:06.05 bitrate=1522.0kbits/s speed=3.92x    
frame=  235 fps=114 q=26.0 size=    1529kB time=00:00:07.78 bitrate=1608.5kbits/s speed=3.78x    
frame=  294 fps=114 q=26.0 size=    1867kB time=00:00:09.77 bitrate=1564.9kbits/s speed= 3.8x    
frame=  352 fps=114 q=26.0 size=    2175kB time=00:00:11.71 bitrate=1521.5kbits/s speed=3.79x    
frame=  408 fps=113 q=26.0 size=    2681kB time=00:00:13.54 bitrate=1621.1kbits/s speed=3.76x    
frame=  466 fps=113 q=26.0 size=    3276kB time=00:00:15.50 bitrate=1730.6kbits/s speed=3.77x    
[mpeg @ 000000000042a820] New subtitle stream 0:4 at pos:6483982 and DTS:17.1437s
frame=  528 fps=114 q=26.0 size=    3868kB time=00:00:17.57 bitrate=1802.4kbits/s speed=3.79x    
frame=  572 fps=111 q=26.0 size=    4508kB time=00:00:19.09 bitrate=1934.4kbits/s speed=3.71x    
frame=  611 fps=108 q=26.0 size=    5215kB time=00:00:20.43 bitrate=2090.4kbits/s speed=3.61x    
frame=  656 fps=106 q=26.0 size=    6040kB time=00:00:21.86 bitrate=2262.6kbits/s speed=3.54x    
frame=  698 fps=104 q=26.0 size=    6724kB time=00:00:23.23 bitrate=2370.8kbits/s speed=3.47x    
frame=  743 fps=103 q=26.0 size=    7451kB time=00:00:24.72 bitrate=2468.6kbits/s speed=3.43x    
frame=  793 fps=103 q=26.0 size=    8007kB time=00:00:26.45 bitrate=2479.7kbits/s speed=3.43x    
frame=  851 fps=103 q=26.0 size=    8495kB time=00:00:28.33 bitrate=2456.3kbits/s speed=3.44x    
frame=  904 fps=103 q=26.0 size=    8992kB time=00:00:30.12 bitrate=2445.4kbits/s speed=3.44x    
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frame= 1886 fps=104 q=26.0 size=   17921kB time=00:01:02.93 bitrate=2332.8kbits/s speed=3.49x    
frame= 1947 fps=105 q=26.0 size=   18284kB time=00:01:04.93 bitrate=2306.6kbits/s speed= 3.5x    
frame= 2009 fps=105 q=26.0 size=   18775kB time=00:01:06.98 bitrate=2296.1kbits/s speed=3.51x    
frame= 2060 fps=105 q=26.0 size=   19307kB time=00:01:08.71 bitrate=2301.7kbits/s speed=3.51x    
frame= 2113 fps=105 q=26.0 size=   19916kB time=00:01:10.48 bitrate=2314.7kbits/s speed=3.51x    
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frame= 3075 fps=105 q=26.0 size=   29217kB time=00:01:42.57 bitrate=2333.5kbits/s speed=3.49x    
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frame= 3296 fps=105 q=26.0 size=   31139kB time=00:01:49.97 bitrate=2319.6kbits/s speed= 3.5x    
frame= 3356 fps=105 q=26.0 size=   31690kB time=00:01:51.93 bitrate=2319.2kbits/s speed= 3.5x    
frame= 3417 fps=105 q=26.0 size=   32178kB time=00:01:54.00 bitrate=2312.2kbits/s speed=3.51x    
frame= 3466 fps=105 q=26.0 size=   32767kB time=00:01:55.60 bitrate=2321.9kbits/s speed= 3.5x    
frame= 3516 fps=105 q=26.0 size=   33321kB time=00:01:57.29 bitrate=2327.3kbits/s speed= 3.5x    
frame= 3566 fps=105 q=26.0 size=   33858kB time=00:01:58.95 bitrate=2331.7kbits/s speed=3.49x    
frame= 3612 fps=104 q=26.0 size=   34515kB time=00:02:00.49 bitrate=2346.6kbits/s speed=3.49x    
frame= 3656 fps=104 q=26.0 size=   35268kB time=00:02:02.00 bitrate=2368.0kbits/s speed=3.48x    
frame= 3699 fps=104 q=26.0 size=   36006kB time=00:02:03.34 bitrate=2391.3kbits/s speed=3.46x    
frame= 3742 fps=104 q=26.0 size=   36684kB time=00:02:04.84 bitrate=2407.1kbits/s speed=3.46x    
frame= 3792 fps=103 q=26.0 size=   37287kB time=00:02:06.44 bitrate=2415.7kbits/s speed=3.45x    
frame= 3844 fps=103 q=26.0 size=   37684kB time=00:02:08.25 bitrate=2407.0kbits/s speed=3.45x    
frame= 3902 fps=104 q=26.0 size=   38066kB time=00:02:10.19 bitrate=2395.1kbits/s speed=3.45x    
frame= 3960 fps=104 q=26.0 size=   38549kB time=00:02:12.07 bitrate=2391.0kbits/s speed=3.46x    
frame= 4014 fps=104 q=26.0 size=   39081kB time=00:02:13.90 bitrate=2390.8kbits/s speed=3.46x    
frame= 4071 fps=104 q=26.0 size=   39649kB time=00:02:15.80 bitrate=2391.6kbits/s speed=3.46x    
frame= 4126 fps=104 q=26.0 size=   40192kB time=00:02:17.62 bitrate=2392.4kbits/s speed=3.46x    
frame= 4180 fps=104 q=26.0 size=   40736kB time=00:02:19.47 bitrate=2392.6kbits/s speed=3.46x    
frame= 4237 fps=104 q=26.0 size=   41279kB time=00:02:21.35 bitrate=2392.3kbits/s speed=3.47x    
frame= 4292 fps=104 q=26.0 size=   41799kB time=00:02:23.25 bitrate=2390.3kbits/s speed=3.47x    
frame= 4346 fps=104 q=26.0 size=   42355kB time=00:02:25.00 bitrate=2392.9kbits/s speed=3.47x    
frame= 4387 fps=104 q=26.0 size=   42997kB time=00:02:26.36 bitrate=2406.5kbits/s speed=3.46x    
frame= 4430 fps=103 q=26.0 size=   43698kB time=00:02:27.79 bitrate=2422.1kbits/s speed=3.45x    
frame= 4478 fps=103 q=26.0 size=   44374kB time=00:02:29.35 bitrate=2433.9kbits/s speed=3.44x    
frame= 4541 fps=103 q=26.0 size=   44857kB time=00:02:31.46 bitrate=2426.1kbits/s speed=3.45x    
frame= 4607 fps=104 q=26.0 size=   45173kB time=00:02:33.68 bitrate=2407.9kbits/s speed=3.46x    
frame= 4670 fps=104 q=26.0 size=   45525kB time=00:02:35.77 bitrate=2394.1kbits/s speed=3.47x    
frame= 4732 fps=104 q=26.0 size=   45985kB time=00:02:37.84 bitrate=2386.6kbits/s speed=3.47x    
frame= 4791 fps=104 q=26.0 size=   46416kB time=00:02:39.80 bitrate=2379.4kbits/s speed=3.48x    
frame= 4853 fps=104 q=26.0 size=   46853kB time=00:02:41.89 bitrate=2370.8kbits/s speed=3.48x    
frame= 4914 fps=105 q=26.0 size=   47318kB time=00:02:43.88 bitrate=2365.3kbits/s speed=3.49x    
frame= 4972 fps=105 q=26.0 size=   47760kB time=00:02:45.84 bitrate=2359.1kbits/s speed=3.49x    
frame= 5030 fps=105 q=26.0 size=   48130kB time=00:02:47.82 bitrate=2349.3kbits/s speed= 3.5x    
frame= 5092 fps=105 q=26.0 size=   48527kB time=00:02:49.87 bitrate=2340.1kbits/s speed= 3.5x    
frame= 5147 fps=105 q=23.0 size=   48906kB time=00:02:51.73 bitrate=2332.9kbits/s speed= 3.5x    
frame= 5212 fps=105 q=26.0 size=   49346kB time=00:02:53.90 bitrate=2324.5kbits/s speed=3.51x    
frame= 5270 fps=105 q=26.0 size=   49746kB time=00:02:55.82 bitrate=2317.7kbits/s speed=3.51x    
frame= 5322 fps=105 q=26.0 size=   50410kB time=00:02:57.51 bitrate=2326.3kbits/s speed=3.51x    
frame= 5369 fps=105 q=26.0 size=   51006kB time=00:02:59.11 bitrate=2332.8kbits/s speed=3.51x    
frame= 5421 fps=105 q=26.0 size=   51600kB time=00:03:00.88 bitrate=2336.9kbits/s speed=3.51x    
frame= 5478 fps=105 q=26.0 size=   52072kB time=00:03:02.76 bitrate=2334.0kbits/s speed=3.51x    
frame= 5550 fps=105 q=26.0 size=   52432kB time=00:03:05.17 bitrate=2319.6kbits/s speed=3.52x    
frame= 5614 fps=106 q=26.0 size=   52805kB time=00:03:07.34 bitrate=2309.0kbits/s speed=3.52x    
frame= 5663 fps=106 q=26.0 size=   53439kB time=00:03:08.94 bitrate=2316.9kbits/s speed=3.52x    
frame= 5710 fps=105 q=26.0 size=   53940kB time=00:03:10.54 bitrate=2319.0kbits/s speed=3.52x    
frame= 5770 fps=105 q=26.0 size=   54347kB time=00:03:12.55 bitrate=2312.1kbits/s speed=3.52x    
frame= 5830 fps=106 q=26.0 size=   54816kB time=00:03:14.49 bitrate=2308.8kbits/s speed=3.52x    
frame= 5876 fps=105 q=26.0 size=   55518kB time=00:03:16.01 bitrate=2320.3kbits/s speed=3.52x    
frame= 5921 fps=105 q=26.0 size=   56249kB time=00:03:17.52 bitrate=2332.8kbits/s speed=3.51x    
frame= 5976 fps=105 q=26.0 size=   56854kB time=00:03:19.33 bitrate=2336.5kbits/s speed=3.51x    
frame= 6029 fps=105 q=26.0 size=   57370kB time=00:03:21.19 bitrate=2335.9kbits/s speed=3.51x    
frame= 6081 fps=105 q=26.0 size=   57807kB time=00:03:22.90 bitrate=2333.9kbits/s speed=3.51x    
frame= 6139 fps=105 q=26.0 size=   58145kB time=00:03:24.82 bitrate=2325.6kbits/s speed=3.51x    
frame= 6189 fps=105 q=26.0 size=   58602kB time=00:03:26.48 bitrate=2324.9kbits/s speed=3.51x    
frame= 6246 fps=105 q=26.0 size=   59082kB time=00:03:28.38 bitrate=2322.6kbits/s speed=3.51x    
frame= 6304 fps=105 q=26.0 size=   59519kB time=00:03:30.34 bitrate=2318.0kbits/s speed=3.52x    
frame= 6359 fps=105 q=26.0 size=   60028kB time=00:03:32.13 bitrate=2318.0kbits/s speed=3.51x    
frame= 6418 fps=105 q=26.0 size=   60486kB time=00:03:34.12 bitrate=2314.1kbits/s speed=3.52x    
frame= 6478 fps=106 q=26.0 size=   60947kB time=00:03:36.10 bitrate=2310.3kbits/s speed=3.52x    
frame= 6537 fps=106 q=26.0 size=   61412kB time=00:03:38.09 bitrate=2306.8kbits/s speed=3.52x    
frame= 6596 fps=106 q=26.0 size=   61938kB time=00:03:40.07 bitrate=2305.6kbits/s speed=3.53x    
frame= 6658 fps=106 q=26.0 size=   62386kB time=00:03:42.14 bitrate=2300.6kbits/s speed=3.53x    
frame= 6727 fps=106 q=26.0 size=   62836kB time=00:03:44.46 bitrate=2293.2kbits/s speed=3.54x    
frame= 6780 fps=106 q=26.0 size=   63400kB time=00:03:46.17 bitrate=2296.3kbits/s speed=3.54x    
frame= 6830 fps=106 q=26.0 size=   63962kB time=00:03:47.88 bitrate=2299.3kbits/s speed=3.53x    
frame= 6884 fps=106 q=26.0 size=   64394kB time=00:03:49.67 bitrate=2296.8kbits/s speed=3.53x    
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frame= 7048 fps=106 q=26.0 size=   65778kB time=00:03:55.11 bitrate=2291.9kbits/s speed=3.53x    
frame= 7104 fps=106 q=26.0 size=   66288kB time=00:03:56.99 bitrate=2291.4kbits/s speed=3.53x    
frame= 7162 fps=106 q=26.0 size=   66668kB time=00:03:58.93 bitrate=2285.8kbits/s speed=3.54x    
frame= 7223 fps=106 q=26.0 size=   66988kB time=00:04:00.98 bitrate=2277.2kbits/s speed=3.54x    
frame= 7285 fps=106 q=26.0 size=   67304kB time=00:04:03.05 bitrate=2268.5kbits/s speed=3.54x    
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frame= 7399 fps=106 q=26.0 size=   68156kB time=00:04:06.82 bitrate=2262.0kbits/s speed=3.55x    
frame= 7459 fps=106 q=26.0 size=   68626kB time=00:04:08.85 bitrate=2259.1kbits/s speed=3.55x    
frame= 7519 fps=106 q=26.0 size=   69070kB time=00:04:10.85 bitrate=2255.5kbits/s speed=3.55x    
frame= 7572 fps=106 q=26.0 size=   69583kB time=00:04:12.65 bitrate=2256.2kbits/s speed=3.55x    
frame= 7624 fps=106 q=26.0 size=   70046kB time=00:04:14.37 bitrate=2255.7kbits/s speed=3.55x    
frame= 7678 fps=106 q=26.0 size=   70486kB time=00:04:16.14 bitrate=2254.2kbits/s speed=3.55x    
frame= 7726 fps=106 q=26.0 size=   70960kB time=00:04:17.74 bitrate=2255.3kbits/s speed=3.54x    
frame= 7768 fps=106 q=26.0 size=   71567kB time=00:04:19.15 bitrate=2262.3kbits/s speed=3.54x    
frame= 7816 fps=106 q=26.0 size=   72193kB time=00:04:20.75 bitrate=2268.0kbits/s speed=3.54x    
frame= 7874 fps=106 q=26.0 size=   72495kB time=00:04:22.67 bitrate=2260.9kbits/s speed=3.54x    
frame= 7933 fps=106 q=26.0 size=   72901kB time=00:04:24.64 bitrate=2256.7kbits/s speed=3.54x    
frame= 7986 fps=106 q=26.0 size=   73449kB time=00:04:26.41 bitrate=2258.5kbits/s speed=3.54x    
frame= 8041 fps=106 q=26.0 size=   74045kB time=00:04:28.24 bitrate=2261.3kbits/s speed=3.54x    
frame= 8098 fps=106 q=26.0 size=   74565kB time=00:04:30.16 bitrate=2261.0kbits/s speed=3.54x    
frame= 8147 fps=106 q=26.0 size=   75117kB time=00:04:31.85 bitrate=2263.6kbits/s speed=3.54x    
frame= 8198 fps=106 q=26.0 size=   75839kB time=00:04:33.51 bitrate=2271.5kbits/s speed=3.53x    
frame= 8248 fps=106 q=26.0 size=   76482kB time=00:04:35.22 bitrate=2276.5kbits/s speed=3.53x    
frame= 8297 fps=106 q=26.0 size=   77092kB time=00:04:36.82 bitrate=2281.4kbits/s speed=3.53x    
frame= 8356 fps=106 q=26.0 size=   77645kB time=00:04:38.74 bitrate=2281.9kbits/s speed=3.53x    
frame= 8414 fps=106 q=26.0 size=   78104kB time=00:04:40.74 bitrate=2279.0kbits/s speed=3.53x    
frame= 8474 fps=106 q=26.0 size=   78606kB time=00:04:42.70 bitrate=2277.8kbits/s speed=3.54x    
frame= 8528 fps=106 q=26.0 size=   79172kB time=00:04:44.52 bitrate=2279.5kbits/s speed=3.54x    
frame= 8587 fps=106 q=26.0 size=   79795kB time=00:04:46.46 bitrate=2281.9kbits/s speed=3.54x    
frame= 8653 fps=106 q=26.0 size=   80391kB time=00:04:48.68 bitrate=2281.3kbits/s speed=3.54x    
frame= 8718 fps=106 q=26.0 size=   81021kB time=00:04:50.90 bitrate=2281.6kbits/s speed=3.55x    
frame= 8779 fps=106 q=26.0 size=   81570kB time=00:04:52.90 bitrate=2281.3kbits/s speed=3.55x    
frame= 8826 fps=106 q=26.0 size=   82147kB time=00:04:54.50 bitrate=2285.0kbits/s speed=3.55x    
frame= 8882 fps=106 q=26.0 size=   82800kB time=00:04:56.36 bitrate=2288.8kbits/s speed=3.55x    
frame= 8950 fps=106 q=26.0 size=   83343kB time=00:04:58.64 bitrate=2286.2kbits/s speed=3.55x    
frame= 9018 fps=107 q=26.0 size=   83935kB time=00:05:00.90 bitrate=2285.1kbits/s speed=3.56x    
frame= 9086 fps=107 q=26.0 size=   84481kB time=00:05:03.14 bitrate=2282.9kbits/s speed=3.56x    
frame= 9151 fps=107 q=26.0 size=   85052kB time=00:05:05.30 bitrate=2282.2kbits/s speed=3.57x    
frame= 9161 fps=106 q=-1.0 Lsize=   85813kB time=00:05:06.02 bitrate=2297.1kbits/s speed=3.56x    
video:70963kB audio:14493kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.417440%
[libx264 @ 000000000043c3a0] frame I:43    Avg QP:17.04  size: 36009
[libx264 @ 000000000043c3a0] frame P:2866  Avg QP:20.64  size: 16000
[libx264 @ 000000000043c3a0] frame B:6252  Avg QP:24.39  size:  4040
[libx264 @ 000000000043c3a0] consecutive B-frames:  1.0%  6.9% 51.7% 40.5%
[libx264 @ 000000000043c3a0] mb I  I16..4: 27.5% 65.5%  7.1%
[libx264 @ 000000000043c3a0] mb P  I16..4:  3.7% 12.3%  0.8%  P16..4: 35.0% 15.9%  7.6%  0.0%  0.0%    skip:24.7%
[libx264 @ 000000000043c3a0] mb B  I16..4:  0.4%  0.8%  0.0%  B16..8: 42.8%  4.8%  1.0%  direct: 5.4%  skip:44.8%  L0:34.0% L1:43.7% BI:22.3%
[libx264 @ 000000000043c3a0] 8x8 transform intra:71.3% inter:82.4%
[libx264 @ 000000000043c3a0] coded y,uvDC,uvAC intra: 65.8% 73.9% 23.9% inter: 26.4% 20.4% 1.3%
[libx264 @ 000000000043c3a0] i16 v,h,dc,p: 21% 47%  5% 28%
[libx264 @ 000000000043c3a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 26% 26%  4%  4%  4%  6%  4%  6%
[libx264 @ 000000000043c3a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 28%  8%  4%  6%  6%  8%  4%  7%
[libx264 @ 000000000043c3a0] i8c dc,h,v,p: 41% 31% 18%  9%
[libx264 @ 000000000043c3a0] Weighted P-Frames: Y:3.0% UV:2.5%
[libx264 @ 000000000043c3a0] ref P L0: 61.5% 19.2% 15.3%  3.9%  0.1%
[libx264 @ 000000000043c3a0] ref B L0: 83.3% 15.0%  1.7%
[libx264 @ 000000000043c3a0] ref B L1: 97.3%  2.7%
[libx264 @ 000000000043c3a0] kb/s:1901.79
[aac @ 00000000004b1080] Qavg: 583.592
[aac @ 0000000000474440] Qavg: 396.171

还有一个未转换的文件示例（在本例中，由于我没有指定忽略字幕流，我通过向批处理文件添加

-sn

进行了更正）：

如何准确地输出一个日志文件，该文件仅说明未转换的文件以及由此产生的错误。例如：

000002.mpg - Not converted
Automatic encoder selection failed for output stream #0:2. Default encoder for format mp4 (codec none) is probably disabled. Please choose an encoder manually.
Error selecting an encoder for stream 0:2

000123.mpg - Not converted
Automatic encoder selection failed for output stream #0:2. Default encoder for format mp4 (codec none) is probably disabled. Please choose an encoder manually.
Error selecting an encoder for stream 0:2

这样，我就不必玩弄一个巨大的日志文件了。谢谢

以下是未来运行的解决方案： 我假设ffmpeg在stderr上打印错误，成功时返回0退出代码，失败时返回值>0

目前您正在将stdout与stderr合并，因此错误消息和正常输出混合在一起

相反，您应该将stdout和stderr指向不同的日志文件。问题是错误消息没有包含有问题的文件名（我很恼火）。解决方案是每次ffmpeg失败时也将文件名附加到日志文件中

@echo off
>log.txt 2>err.txt (
  for %%F in (*.dat *.mpg *.mpeg) do (
    ffmpeg -hide_banner -v info -n -i %%F -map 0 -dn -sn -c:v libx264 -crf 20 -c:a aac -b:a 192k "%%~nF.mp4"
    if errorlevel 1 echo %%F: FAILED&echo(
  )
)

err.txt文件最终将显示如下内容：

Automatic encoder selection failed for output stream #0:2. Default encoder for format mp4 (codec none) is probably disabled. Please choose an encoder manually.
Error selecting an encoder for stream 0:2
571314.mpg: FAILED

Automatic encoder selection failed for output stream #0:2. Default encoder for format mp4 (codec none) is probably disabled. Please choose an encoder manually.
Error selecting an encoder for stream 0:2
571315.mpg: FAILED

571314.mpg: Automatic encoder selection failed for output stream #0:2. Default encoder for format mp4 (codec none) is probably disabled. Please choose an encoder manually.
571314.mpg: Error selecting an encoder for stream 0:2
571315.mpg: Automatic encoder selection failed for output stream #0:2. Default encoder for format mp4 (codec none) is probably disabled. Please choose an encoder manually.
571315.mpg: Error selecting an encoder for stream 0:2

如果您不关心捕获标准输出，那么可以重定向到nul而不是log.txt。或者，您可以删除标准输出重定向，以便在windows控制台上监视进度

下面是一个用于现有1.67 gb日志文件的解决方案，其中混合了标准输出和标准输出 您可以轻松（且相对快速）使用解析出失败的文件名和错误消息。JREPL是纯脚本（混合批处理/JScript），从XP开始在任何windows版本上本机运行-不需要第三方exe文件

我假设所有错误消息都包含文本“error”或“fail”（忽略大小写）。如果文件名包含该文本，您可能会得到一些误报，但这些应该很容易手动删除

下面的代码使用行延续来提高可读性

@echo off
call jrepl "^ *Input #0, .*, from '(.*)':$/^.*(?:error|fail).*$"^
           "f=$2;$txt=false/$txt=f+': '+$3"^
           /t "/" /jmatchq /i /jbeg "var f" /f log.txt /o err.txt

生成的err.txt应该类似于：

Automatic encoder selection failed for output stream #0:2. Default encoder for format mp4 (codec none) is probably disabled. Please choose an encoder manually.
Error selecting an encoder for stream 0:2
571314.mpg: FAILED

Automatic encoder selection failed for output stream #0:2. Default encoder for format mp4 (codec none) is probably disabled. Please choose an encoder manually.
Error selecting an encoder for stream 0:2
571315.mpg: FAILED

571314.mpg: Automatic encoder selection failed for output stream #0:2. Default encoder for format mp4 (codec none) is probably disabled. Please choose an encoder manually.
571314.mpg: Error selecting an encoder for stream 0:2
571315.mpg: Automatic encoder selection failed for output stream #0:2. Default encoder for format mp4 (codec none) is probably disabled. Please choose an encoder manually.
571315.mpg: Error selecting an encoder for stream 0:2

逻辑相当直截了当

• /F

  和

  /O

  选项分别定义输入和输出

• /JBEG

  选项在初始化期间定义变量

  f

• /I

  选项忽略大小写

• /JMATCHQ

  选项将替换字符串视为JSCRIPT，只打印分配给

  $txt

  的字符串。忽略值false（未打印）。将忽略所有不匹配的文本

• /T

  选项指定查找和替换（第一个和第二个）参数由编号相同的一系列值组成，这些值由

  /

  分隔。在这种情况下，有两组查找/替换
• 第一个查找查找每个文件的开头。REPLACE提取文件名并将其保存到

  f

  变量中，并将

  $txt

  设置为false以防止任何输出
• 第二个查找查找包含错误或失败的任何行。REPLACE用

  f

  中包含的文件名作为行的前缀，并将其分配给

  $txt

  以进行输出

---

到目前为止，您是否自己尝试过任何东西，或者您是否希望我们为您做工作？请注意StackOverflow不是免费的代码/脚本编写服务！在这里阅读并学习！将每个进程记录到一个单独的文件中。如果进程成功，请删除它。清理所有剩余的日志。