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  • popen returns output after delay ?

    7 février 2013, par Scarface

    I am executing FFMPEG with popen() to get the result of the process. The main reason I am doing this is so I can stream constant output and build a progress bar.

    The issue is that the process starts and I receive some initial information. The rest of the information does not appear until after the process is done however. So essentially, the rest of the output (output on the progress) which comes on intervals when the process is going is delayed right before the process and all comes at once after the process is done which is useless.

    I need the output to constantly come so I can update a progress bar. If I change 2>&1 to 2> stderr.txt that text file receives output consistently but I would like to receive in php since many processes may be running. Anyone have any ideas on solving this ? It seems noone can figure this out...and it is driving me crazy ! IF anyone helps me figure this out (and actually solve it), I will start a bounty and then accept their answer.

    $handle = popen ('/usr/local/bin/ffmpeg -i /home/g/Desktop/cave.wmv -deinterlace -acodec libfaac -ab 96k -ar 44100 -vcodec libx264 -s 480x320 -f flv /home/g/Desktop/file.flv 2>&1', 'r');
    
if ($handle) {
    

    
    while(! feof ($handle)) {
    

    
echo $read = fgets ($handle);
    

    
ob_flush();
    
    flush();
    
    } 
    
    pclose ($handle);
    
}

    OUTPUTS

        ffmpeg version git-N-30561-g6700aa8, Copyright (c) 2000-2011 the FFmpeg developers built on Jun 5 2011 21:10:26 with gcc 4.5.2 configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-x11grab libavutil 51. 4. 0 / 51. 4. 0 libavcodec 53. 6. 1 / 53. 6. 1 libavformat 53. 2. 0 / 53. 2. 0 libavdevice 53. 1. 1 / 53. 1. 1 libavfilter 2. 13. 0 / 2. 13. 0 libswscale 0. 14. 1 / 0. 14. 1 libpostproc 51. 2. 0 / 51. 2. 0 Seems stream 0 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 29.97 (30000/1001) Input #0, asf, from '/home/geoff/Desktop/cave.wmv': Metadata: WMFSDKVersion : 11.0.5721.5145 WMFSDKNeeded : 0.0.0.0000 IsVBR : 0 Duration: 00:01:37.93, bitrate: 263 kb/s Stream #0.0(eng): Video: vc1 (Advanced), yuv420p, 320x240, 256 kb/s, PAR 1:1 DAR 4:3, 29.97 tbr, 1k tbn, 1k tbc [buffer @ 0xacae200] w:320 h:240 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param: [scale @ 0xacbc120] w:320 h:240 fmt:yuv420p -> w:480 h:320 fmt:yuv420p flags:0x4 [libx264 @ 0xacbb7e0] Default settings detected, using medium profile [libx264 @ 0xacbb7e0] using SAR=1/1 [libx264 @ 0xacbb7e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle Cache64 [libx264 @ 0xacbb7e0] profile High, level 2.1 [libx264 @ 0xacbb7e0] 264 - core 115 r1995 c1e60b9 - H.264/MPEG-4 AVC codec - Copyleft 2003-2011 - 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=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=1 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00 Output #0, flv, to '/home/geoff/Desktop/file.flv': Metadata: WMFSDKVersion : 11.0.5721.5145 WMFSDKNeeded : 0.0.0.0000 IsVBR : 0 encoder : Lavf53.2.0 Stream #0.0(eng): Video: libx264, yuv420p, 480x320 [PAR 1:1 DAR 3:2], q=2-31, 200 kb/s, 1k tbn, 29.97 tbc Stream mapping: Stream #0.0 -> #0.0 Press [q] to stop, [?] for help 
    

    
**THEN AFTER THE PROCESS IS COMPLETE OUTPUTS**
    

    
frame= 49 fps= 0 q=29.0 size= 17kB time=00:00:00.23 bitrate= 593.9kbits/s frame= 58 fps= 52 q=29.0 size= 29kB time=00:00:00.53 bitrate= 448.9kbits/s frame= 71 fps= 44 q=29.0 size= 48kB time=00:00:00.96 bitrate= 405.7kbits/s frame= 85 fps= 39 q=29.0 size= 69kB time=00:00:01.43 bitrate= 393.2kbits/s frame= 104 fps= 38 q=29.0 size= 90kB time=00:00:02.06 bitrate= 358.3kbits/s frame= 117 fps= 36 q=29.0 size= 104kB time=00:00:02.50 bitrate= 339.5kbits/s frame= 134 fps= 36 q=29.0 size= 119kB time=00:00:03.06 bitrate= 317.6kbits/s frame= 153 fps= 36 q=29.0 size= 137kB time=00:00:03.70 bitrate= 303.5kbits/s frame= 167 fps= 35 q=29.0 size= 153kB time=00:00:04.17 bitrate= 300.1kbits/s frame= 185 fps= 35 q=29.0 size= 173kB time=00:00:04.77 bitrate= 296.8kbits/s frame= 201 fps= 35 q=29.0 size= 199kB time=00:00:05.30 bitrate= 306.8kbits/s frame= 218 fps= 35 q=29.0 size= 222kB time=00:00:05.87 bitrate= 310.3kbits/s frame= 237 fps= 35 q=29.0 size= 245kB time=00:00:06.50 bitrate= 309.1kbits/s frame= 254 fps= 35 q=29.0 size= 267kB time=00:00:07.07 bitrate= 309.7kbits/s frame= 270 fps= 34 q=29.0 size= 285kB time=00:00:07.60 bitrate= 307.2kbits/s frame= 292 fps= 35 q=29.0 size= 314kB time=00:00:08.34 bitrate= 308.5kbits/s frame= 316 fps= 36 q=29.0 size= 334kB time=00:00:09.14 bitrate= 299.3kbits/s frame= 336 fps= 36 q=29.0 size= 356kB time=00:00:09.80 bitrate= 297.0kbits/s frame= 356 fps= 36 q=29.0 size= 381kB time=00:00:10.47 bitrate= 297.9kbits/s frame= 375 fps= 36 q=29.0 size= 405kB time=00:00:11.11 bitrate= 298.5kbits/s frame= 391 fps= 36 q=29.0 size= 431kB time=00:00:11.64 bitrate= 303.5kbits/s frame= 408 fps= 36 q=29.0 size= 456kB time=00:00:12.21 bitrate= 305.8kbits/s frame= 424 fps= 35 q=29.0 size= 479kB time=00:00:12.74 bitrate= 307.8kbits/s frame= 441 fps= 35 q=29.0 size= 503kB time=00:00:13.31 bitrate= 309.3kbits/s frame= 462 fps= 36 q=29.0 size= 526kB time=00:00:14.01 bitrate= 307.4kbits/s frame= 483 fps= 36 q=29.0 size= 546kB time=00:00:14.71 bitrate= 304.2kbits/s frame= 501 fps= 36 q=29.0 size= 583kB time=00:00:15.31 bitrate= 311.9kbits/s frame= 520 fps= 36 q=29.0 size= 609kB time=00:00:15.95 bitrate= 312.7kbits/s frame= 541 fps= 36 q=29.0 size= 636kB time=00:00:16.65 bitrate= 313.1kbits/s frame= 559 fps= 36 q=29.0 size= 668kB time=00:00:17.25 bitrate= 317.3kbits/s frame= 574 fps= 36 q=29.0 size= 698kB time=00:00:17.75 bitrate= 321.9kbits/s frame= 593 fps= 36 q=29.0 size= 732kB time=00:00:18.38 bitrate= 326.1kbits/s frame= 611 fps= 36 q=29.0 size= 760kB time=00:00:18.98 bitrate= 328.0kbits/s frame= 631 fps= 36 q=29.0 size= 788kB time=00:00:19.65 bitrate= 328.5kbits/s frame= 651 fps= 36 q=29.0 size= 817kB time=00:00:20.32 bitrate= 329.2kbits/s frame= 670 fps= 36 q=29.0 size= 842kB time=00:00:20.95 bitrate= 329.0kbits/s frame= 689 fps= 36 q=29.0 size= 868kB time=00:00:21.58 bitrate= 329.4kbits/s frame= 707 fps= 36 q=29.0 size= 896kB time=00:00:22.18 bitrate= 330.8kbits/s frame= 723 fps= 36 q=29.0 size= 924kB time=00:00:22.72 bitrate= 333.0kbits/s frame= 741 fps= 36 q=29.0 size= 955kB time=00:00:23.32 bitrate= 335.4kbits/s frame= 761 fps= 36 q=29.0 size= 999kB time=00:00:23.99 bitrate= 341.0kbits/s frame= 783 fps= 36 q=29.0 size= 1025kB time=00:00:24.72 bitrate= 339.8kbits/s frame= 802 fps= 36 q=29.0 size= 1047kB time=00:00:25.35 bitrate= 338.3kbits/s frame= 821 fps= 36 q=29.0 size= 1076kB time=00:00:25.99 bitrate= 339.3kbits/s frame= 841 fps= 36 q=29.0 size= 1104kB time=00:00:26.66 bitrate= 339.2kbits/s frame= 861 fps= 36 q=29.0 size= 1137kB time=00:00:27.32 bitrate= 340.7kbits/s frame= 881 fps= 36 q=29.0 size= 1164kB time=00:00:27.99 bitrate= 340.7kbits/s frame= 901 fps= 36 q=29.0 size= 1196kB time=00:00:28.66 bitrate= 341.9kbits/s frame= 919 fps= 36 q=29.0 size= 1223kB time=00:00:29.26 bitrate= 342.5kbits/s frame= 939 fps= 36 q=29.0 size= 1259kB time=00:00:29.93 bitrate= 344.7kbits/s frame= 954 fps= 36 q=29.0 size= 1301kB time=00:00:30.43 bitrate= 350.1kbits/s frame= 970 fps= 36 q=29.0 size= 1337kB time=00:00:30.96 bitrate= 353.7kbits/s frame= 988 fps= 36 q=29.0 size= 1373kB time=00:00:31.56 bitrate= 356.3kbits/s frame= 1005 fps= 36 q=29.0 size= 1418kB time=00:00:32.13 bitrate= 361.4kbits/s frame= 1023 fps= 36 q=29.0 size= 1448kB time=00:00:32.73 bitrate= 362.4kbits/s frame= 1040 fps= 36 q=29.0 size= 1483kB time=00:00:33.30 bitrate= 364.9kbits/s frame= 1058 fps= 36 q=29.0 size= 1519kB time=00:00:33.90 bitrate= 367.1kbits/s frame= 1074 fps= 36 q=29.0 size= 1546kB time=00:00:34.43 bitrate= 367.7kbits/s frame= 1091 fps= 36 q=29.0 size= 1573kB time=00:00:35.00 bitrate= 368.3kbits/s frame= 1111 fps= 36 q=29.0 size= 1593kB time=00:00:35.66 bitrate= 365.9kbits/s frame= 1126 fps= 36 q=29.0 size= 1612kB time=00:00:36.17 bitrate= 365.1kbits/s frame= 1140 fps= 36 q=29.0 size= 1637kB time=00:00:36.63 bitrate= 366.1kbits/s frame= 1151 fps= 35 q=29.0 size= 1657kB time=00:00:37.00 bitrate= 366.9kbits/s frame= 1170 fps= 35 q=29.0 size= 1692kB time=00:00:37.63 bitrate= 368.3kbits/s frame= 1190 fps= 35 q=29.0 size= 1724kB time=00:00:38.30 bitrate= 368.6kbits/s frame= 1208 fps= 35 q=29.0 size= 1751kB time=00:00:38.90 bitrate= 368.6kbits/s frame= 1225 fps= 35 q=29.0 size= 1776kB time=00:00:39.47 bitrate= 368.6kbits/s frame= 1242 fps= 35 q=29.0 size= 1806kB time=00:00:40.04 bitrate= 369.4kbits/s frame= 1265 fps= 35 q=29.0 size= 1840kB time=00:00:40.80 bitrate= 369.4kbits/s frame= 1283 fps= 35 q=29.0 size= 1858kB time=00:00:41.40 bitrate= 367.5kbits/s frame= 1298 fps= 35 q=29.0 size= 1874kB time=00:00:41.90 bitrate= 366.3kbits/s frame= 1317 fps= 35 q=29.0 size= 1898kB time=00:00:42.54 bitrate= 365.5kbits/s frame= 1335 fps= 35 q=29.0 size= 1931kB time=00:00:43.14 bitrate= 366.7kbits/s frame= 1353 fps= 35 q=29.0 size= 1966kB time=00:00:43.74 bitrate= 368.2kbits/s frame= 1371 fps= 35 q=29.0 size= 1996kB time=00:00:44.34 bitrate= 368.8kbits/s frame= 1391 fps= 35 q=29.0 size= 2029kB time=00:00:45.01 bitrate= 369.3kbits/s frame= 1410 fps= 35 q=29.0 size= 2062kB time=00:00:45.64 bitrate= 370.2kbits/s frame= 1430 fps= 35 q=29.0 size= 2089kB time=00:00:46.31 bitrate= 369.4kbits/s frame= 1449 fps= 35 q=29.0 size= 2114kB time=00:00:46.94 bitrate= 368.8kbits/s frame= 1469 fps= 35 q=29.0 size= 2140kB time=00:00:47.61 bitrate= 368.1kbits/s frame= 1488 fps= 35 q=29.0 size= 2169kB time=00:00:48.24 bitrate= 368.3kbits/s frame= 1506 fps= 35 q=29.0 size= 2212kB time=00:00:48.84 bitrate= 371.0kbits/s frame= 1522 fps= 35 q=29.0 size= 2248kB time=00:00:49.38 bitrate= 372.8kbits/s frame= 1540 fps= 35 q=29.0 size= 2278kB time=00:00:49.98 bitrate= 373.4kbits/s frame= 1558 fps= 35 q=29.0 size= 2314kB time=00:00:50.58 bitrate= 374.7kbits/s frame= 1577 fps= 35 q=29.0 size= 2346kB time=00:00:51.21 bitrate= 375.2kbits/s frame= 1598 fps= 35 q=29.0 size= 2377kB time=00:00:51.91 bitrate= 375.1kbits/s frame= 1615 fps= 35 q=29.0 size= 2409kB time=00:00:52.48 bitrate= 375.9kbits/s frame= 1633 fps= 35 q=29.0 size= 2440kB time=00:00:53.08 bitrate= 376.4kbits/s frame= 1651 fps= 35 q=29.0 size= 2470kB time=00:00:53.68 bitrate= 376.9kbits/s frame= 1670 fps= 35 q=29.0 size= 2501kB time=00:00:54.32 bitrate= 377.2kbits/s frame= 1690 fps= 35 q=29.0 size= 2539kB time=00:00:54.98 bitrate= 378.3kbits/s frame= 1707 fps= 35 q=29.0 size= 2570kB time=00:00:55.55 bitrate= 378.9kbits/s frame= 1725 fps= 35 q=29.0 size= 2601kB time=00:00:56.15 bitrate= 379.4kbits/s frame= 1743 fps= 35 q=29.0 size= 2632kB time=00:00:56.75 bitrate= 379.8kbits/s frame= 1762 fps= 35 q=29.0 size= 2677kB time=00:00:57.39 bitrate= 382.2kbits/s frame= 1781 fps= 35 q=29.0 size= 2706kB time=00:00:58.02 bitrate= 382.0kbits/s frame= 1800 fps= 35 q=29.0 size= 2738kB time=00:00:58.65 bitrate= 382.3kbits/s frame= 1821 fps= 35 q=29.0 size= 2765kB time=00:00:59.36 bitrate= 381.6kbits/s frame= 1841 fps= 36 q=29.0 size= 2793kB time=00:01:00.02 bitrate= 381.2kbits/s frame= 1857 fps= 35 q=29.0 size= 2822kB time=00:01:00.56 bitrate= 381.7kbits/s frame= 1875 fps= 35 q=29.0 size= 2849kB time=00:01:01.16 bitrate= 381.6kbits/s frame= 1894 fps= 35 q=29.0 size= 2874kB time=00:01:01.79 bitrate= 381.0kbits/s frame= 1914 fps= 35 q=29.0 size= 2900kB time=00:01:02.46 bitrate= 380.4kbits/s frame= 1933 fps= 35 q=29.0 size= 2924kB time=00:01:03.09 bitrate= 379.7kbits/s frame= 1954 fps= 36 q=29.0 size= 2946kB time=00:01:03.79 bitrate= 378.3kbits/s frame= 1974 fps= 36 q=29.0 size= 2971kB time=00:01:04.46 bitrate= 377.5kbits/s frame= 1991 fps= 36 q=29.0 size= 3005kB time=00:01:05.03 bitrate= 378.5kbits/s frame= 2006 fps= 35 q=29.0 size= 3043kB time=00:01:05.53 bitrate= 380.4kbits/s frame= 2024 fps= 35 q=29.0 size= 3074kB time=00:01:06.13 bitrate= 380.8kbits/s frame= 2042 fps= 35 q=29.0 size= 3099kB time=00:01:06.73 bitrate= 380.5kbits/s frame= 2059 fps= 35 q=29.0 size= 3122kB time=00:01:07.30 bitrate= 380.0kbits/s frame= 2077 fps= 35 q=29.0 size= 3149kB time=00:01:07.90 bitrate= 379.9kbits/s frame= 2096 fps= 35 q=29.0 size= 3172kB time=00:01:08.53 bitrate= 379.2kbits/s frame= 2117 fps= 35 q=29.0 size= 3196kB time=00:01:09.23 bitrate= 378.2kbits/s frame= 2129 fps= 35 q=29.0 size= 3214kB time=00:01:09.63 bitrate= 378.0kbits/s frame= 2147 fps= 35 q=29.0 size= 3246kB time=00:01:10.23 bitrate= 378.6kbits/s frame= 2167 fps= 35 q=29.0 size= 3268kB time=00:01:10.90 bitrate= 377.5kbits/s frame= 2185 fps= 35 q=29.0 size= 3298kB time=00:01:11.50 bitrate= 377.8kbits/s frame= 2204 fps= 35 q=29.0 size= 3327kB time=00:01:12.13 bitrate= 377.8kbits/s frame= 2222 fps= 35 q=29.0 size= 3359kB time=00:01:12.74 bitrate= 378.3kbits/s frame= 2242 fps= 35 q=29.0 size= 3386kB time=00:01:13.40 bitrate= 377.9kbits/s frame= 2261 fps= 35 q=29.0 size= 3428kB time=00:01:14.04 bitrate= 379.3kbits/s frame= 2280 fps= 35 q=29.0 size= 3459kB time=00:01:14.67 bitrate= 379.5kbits/s frame= 2299 fps= 35 q=29.0 size= 3494kB time=00:01:15.30 bitrate= 380.1kbits/s frame= 2318 fps= 35 q=29.0 size= 3514kB time=00:01:15.94 bitrate= 379.1kbits/s frame= 2340 fps= 36 q=29.0 size= 3539kB time=00:01:16.67 bitrate= 378.1kbits/s frame= 2360 fps= 36 q=29.0 size= 3563kB time=00:01:17.34 bitrate= 377.4kbits/s frame= 2377 fps= 36 q=29.0 size= 3586kB time=00:01:17.91 bitrate= 377.1kbits/s frame= 2393 fps= 36 q=29.0 size= 3606kB time=00:01:18.44 bitrate= 376.6kbits/s frame= 2410 fps= 35 q=29.0 size= 3625kB time=00:01:19.01 bitrate= 375.9kbits/s frame= 2427 fps= 35 q=29.0 size= 3639kB time=00:01:19.57 bitrate= 374.7kbits/s frame= 2444 fps= 35 q=29.0 size= 3656kB time=00:01:20.14 bitrate= 373.7kbits/s frame= 2461 fps= 35 q=29.0 size= 3680kB time=00:01:20.71 bitrate= 373.5kbits/s frame= 2473 fps= 35 q=29.0 size= 3702kB time=00:01:21.11 bitrate= 373.9kbits/s frame= 2488 fps= 35 q=29.0 size= 3722kB time=00:01:21.61 bitrate= 373.6kbits/s frame= 2506 fps= 35 q=29.0 size= 3764kB time=00:01:22.21 bitrate= 375.0kbits/s frame= 2522 fps= 35 q=29.0 size= 3788kB time=00:01:22.75 bitrate= 375.0kbits/s frame= 2539 fps= 35 q=29.0 size= 3820kB time=00:01:23.31 bitrate= 375.6kbits/s frame= 2556 fps= 35 q=29.0 size= 3851kB time=00:01:23.88 bitrate= 376.1kbits/s frame= 2571 fps= 35 q=29.0 size= 3885kB time=00:01:24.38 bitrate= 377.2kbits/s frame= 2587 fps= 35 q=29.0 size= 3919kB time=00:01:24.91 bitrate= 378.1kbits/s frame= 2600 fps= 35 q=29.0 size= 3949kB time=00:01:25.35 bitrate= 379.0kbits/s frame= 2616 fps= 35 q=29.0 size= 3975kB time=00:01:25.88 bitrate= 379.1kbits/s frame= 2633 fps= 35 q=29.0 size= 4003kB time=00:01:26.45 bitrate= 379.3kbits/s frame= 2653 fps= 35 q=29.0 size= 4029kB time=00:01:27.12 bitrate= 378.9kbits/s frame= 2665 fps= 35 q=29.0 size= 4045kB time=00:01:27.52 bitrate= 378.6kbits/s frame= 2682 fps= 35 q=29.0 size= 4068kB time=00:01:28.08 bitrate= 378.3kbits/s frame= 2701 fps= 35 q=29.0 size= 4084kB time=00:01:28.72 bitrate= 377.1kbits/s frame= 2719 fps= 35 q=29.0 size= 4124kB time=00:01:29.32 bitrate= 378.2kbits/s frame= 2735 fps= 35 q=29.0 size= 4154kB time=00:01:29.85 bitrate= 378.7kbits/s frame= 2753 fps= 35 q=29.0 size= 4201kB time=00:01:30.45 bitrate= 380.5kbits/s frame= 2771 fps= 35 q=29.0 size= 4230kB time=00:01:31.05 bitrate= 380.6kbits/s frame= 2788 fps= 35 q=29.0 size= 4259kB time=00:01:31.62 bitrate= 380.8kbits/s frame= 2805 fps= 35 q=29.0 size= 4287kB time=00:01:32.19 bitrate= 380.9kbits/s frame= 2825 fps= 35 q=29.0 size= 4318kB time=00:01:32.86 bitrate= 380.9kbits/s frame= 2847 fps= 35 q=29.0 size= 4334kB time=00:01:33.59 bitrate= 379.3kbits/s frame= 2866 fps= 35 q=29.0 size= 4371kB time=00:01:34.22 bitrate= 380.0kbits/s frame= 2885 fps= 35 q=29.0 size= 4395kB time=00:01:34.86 bitrate= 379.6kbits/s frame= 2903 fps= 35 q=29.0 size= 4424kB time=00:01:35.46 bitrate= 379.6kbits/s frame= 2921 fps= 35 q=29.0 size= 4450kB time=00:01:36.06 bitrate= 379.5kbits/s frame= 2934 fps= 35 q=29.0 Lsize= 4512kB time=00:01:37.86 bitrate= 377.7kbits/s dup=0 drop=1 video:4454kB audio:0kB global headers:0kB muxing overhead 1.293893% frame I:13 Avg QP:19.66 size: 13557 [libx264 @ 0x95737e0] frame P:1221 Avg QP:23.87 size: 2962 [libx264 @ 0x95737e0] frame B:1700 Avg QP:30.26 size: 451 [libx264 @ 0x95737e0] consecutive B-frames: 7.2% 33.5% 39.7% 19.6% [libx264 @ 0x95737e0] mb I I16..4: 9.6% 73.3% 17.0% [libx264 @ 0x95737e0] mb P I16..4: 0.4% 2.5% 0.4% P16..4: 37.8% 18.9% 8.1% 0.0% 0.0% skip:31.8% [libx264 @ 0x95737e0] mb B I16..4: 0.0% 0.1% 0.0% B16..8: 30.9% 1.9% 0.4% direct: 0.9% skip:65.8% L0:30.8% L1:63.8% BI: 5.4% [libx264 @ 0x95737e0] 8x8 transform intra:74.5% inter:72.0% [libx264 @ 0x95737e0] coded y,uvDC,uvAC intra: 79.7% 84.7% 50.5% inter: 14.2% 13.9% 0.7% [libx264 @ 0x95737e0] i16 v,h,dc,p: 60% 18% 4% 18% [libx264 @ 0x95737e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 12% 10% 4% 10% 15% 7% 10% 7% [libx264 @ 0x95737e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 19% 9% 4% 10% 13% 6% 8% 4% [libx264 @ 0x95737e0] i8c dc,h,v,p: 46% 21% 22% 12% [libx264 @ 0x95737e0] Weighted P-Frames: Y:0.8% UV:0.4% [libx264 @ 0x95737e0] ref P L0: 65.4% 20.8% 10.8% 2.9% 0.0% [libx264 @ 0x95737e0] ref B L0: 91.4% 8.0% 0.6% [libx264 @ 0x95737e0] ref B L1: 95.6% 4.4% [libx264 @ 0x95737e0] kb/s:372.66

  • What is wrong with the following ffmpeg command

    14 août 2013, par Brad

    What is wrong with the following ffmpeg command. Originally this had -sameq instead of the -qscale:a 0

    Command :

    ffmpeg -loglevel debug -threads 4 -i sample-in.mpg -ss 00:00:01 -t 00:00:05 -f image2 -y sample-frames/frame%d.png -acodec copy -qscale:a 0  -y sample.mp3

    Output
    

    
ffmpeg version 1.2.1 Copyright (c) 2000-2013 the FFmpeg developers
    
  built on Jul  9 2013 04:36:42 with Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/1.2.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=cc --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid --enable-ffplay
    
  libavutil      52. 18.100 / 52. 18.100
    
  libavcodec     54. 92.100 / 54. 92.100
    
  libavformat    54. 63.104 / 54. 63.104
    
  libavdevice    54.  3.103 / 54.  3.103
    
  libavfilter     3. 42.103 /  3. 42.103
    
  libswscale      2.  2.100 /  2.  2.100
    
  libswresample   0. 17.102 /  0. 17.102
    
  libpostproc    52.  2.100 / 52.  2.100
    

    
Splitting the commandline.
    
Reading option '-loglevel' ... matched as option 'loglevel' (set libav* logging level) with argument 'debug'.
    
Reading option '-threads' ... matched as AVOption 'threads' with argument '4'.
    
Reading option '-i' ... matched as input file with argument 'sample-in.mpg'.
    
Reading option '-ss' ... matched as option 'ss' (set the start time offset) with argument '00:00:01'.
    
Reading option '-t' ... matched as option 't' (record or transcode "duration" seconds of audio/video) with argument '00:00:05'.
    
Reading option '-f' ... matched as option 'f' (force format) with argument 'image2'.
    
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
    
Reading option 'sample-frames/frame%d.png' ... matched as output file.
    
Reading option '-acodec' ... matched as option 'acodec' (force audio codec ('copy' to copy stream)) with argument 'copy'.
    
Reading option '-qscale:a' ... matched as option 'qscale' (use fixed quality scale (VBR)) with argument '0'.
    
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
    
Reading option 'sample.mp3' ... matched as output file.
    
Finished splitting the commandline.
    
Parsing a group of options: global .
    
Applying option loglevel (set libav* logging level) with argument debug.
    
Applying option y (overwrite output files) with argument 1.
    
    Last message repeated 1 times
    
Successfully parsed a group of options.
    
Parsing a group of options: input file sample-in.mpg.
    
Successfully parsed a group of options.
    
Opening an input file: sample-in.mpg.
    
[mpeg @ 0x7ffb4a80f200] Format mpeg probed with size=16384 and score=52
    
[mpeg @ 0x7ffb4a80f200] File position before avformat_find_stream_info() is 0
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2500
    
[mpeg @ 0x7ffb4a80f200] Probe with size=2002, packets=1 detected mpegvideo with score=25
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2499
    
[mpeg @ 0x7ffb4a80f200] Probe with size=4043, packets=2 detected mpegvideo with score=25
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2498
    
[mpeg @ 0x7ffb4a80f200] Probe with size=6084, packets=3 detected mpegvideo with score=25
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2497
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2496
    
[mpeg @ 0x7ffb4a80f200] Probe with size=10166, packets=5 detected mpegvideo with score=25
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2495
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2494
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2493
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2492
    
[mpeg @ 0x7ffb4a80f200] Probe with size=18330, packets=9 detected mpegvideo with score=25
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2491
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2490
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2489
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2488
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2487
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2486
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2485
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2484
    
[mpeg @ 0x7ffb4a80f200] Probe with size=34658, packets=17 detected mpegvideo with score=25
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2483
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2482
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2481
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2480
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2479
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2478
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2477
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2476
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2475
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2474
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2473
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2472
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2471
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2470
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2469
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2468
    
[mpeg @ 0x7ffb4a80f200] Probe with size=67266, packets=33 detected mpegvideo with score=51
    
[mpeg @ 0x7ffb4a80f200] probed stream 0
    
[mpeg @ 0x7ffb4a80f200] first_dts 86997 not matching first dts 93003 in the queue
    
    Last message repeated 3 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 86997 not matching first dts 108018 in the queue
    
    Last message repeated 3 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 111600 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 135360 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 156960 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 180720 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 202320 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 226080 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 247680 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 271440 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 295200 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 316800 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 340560 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 362160 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 385920 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 407520 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 431280 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 452880 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 476640 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 498240 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 522000 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] max_analyze_duration 5000000 reached at 5005000 microseconds
    
[mpeg @ 0x7ffb4a80f200] File position after avformat_find_stream_info() is 0
    
Input #0, mpeg, from 'sample-in.mpg':
    
  Duration: 00:00:05.97, start: 1.000000, bitrate: 6827 kb/s
    
    Stream #0:0[0x1e0], 152, 1/90000: Video: mpeg1video, yuv420p, 704x480 [SAR 200:219 DAR 880:657], 1001/30000, 104857 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 29.97 tbc
    
    Stream #0:1[0x1c0], 211, 1/90000: Audio: mp2, 48000 Hz, stereo, s16p, 64 kb/s
    
Successfully opened the file.
    
Parsing a group of options: output file sample-frames/frame%d.png.
    
Applying option ss (set the start time offset) with argument 00:00:01.
    
Applying option t (record or transcode "duration" seconds of audio/video) with argument 00:00:05.
    
Applying option f (force format) with argument image2.
    
Successfully parsed a group of options.
    
Opening an output file: sample-frames/frame%d.png.
    
Successfully opened the file.
    
Parsing a group of options: output file sample.mp3.
    
Applying option acodec (force audio codec ('copy' to copy stream)) with argument copy.
    
Applying option qscale:a (use fixed quality scale (VBR)) with argument 0.
    
Successfully parsed a group of options.
    
Opening an output file: sample.mp3.
    
Successfully opened the file.
    
[buffer @ 0x7ffb4a411e40] Setting entry with key 'video_size' to value '704x480'
    
[buffer @ 0x7ffb4a411e40] Setting entry with key 'pix_fmt' to value '0'
    
[buffer @ 0x7ffb4a411e40] Setting entry with key 'time_base' to value '1/90000'
    
[buffer @ 0x7ffb4a411e40] Setting entry with key 'pixel_aspect' to value '200/219'
    
[buffer @ 0x7ffb4a411e40] Setting entry with key 'sws_param' to value 'flags=2'
    
[buffer @ 0x7ffb4a411e40] Setting entry with key 'frame_rate' to value '30000/1001'
    
[graph 0 input from stream 0:0 @ 0x7ffb4a411de0] w:704 h:480 pixfmt:yuv420p tb:1/90000 fr:30000/1001 sar:200/219 sws_param:flags=2
    
[scale @ 0x7ffb4a414800] Setting 'w' to value '0'
    
[scale @ 0x7ffb4a414800] Setting 'h' to value '0'
    
[scale @ 0x7ffb4a414800] Setting 'flags' to value '0x4'
    
[auto-inserted scaler 0 @ 0x7ffb4a414740] w:0 h:0 flags:'0x4' interl:0
    
[format @ 0x7ffb4a42aa20] auto-inserting filter 'auto-inserted scaler 0' between the filter 'Parsed_null_0' and the filter 'format'
    
[auto-inserted scaler 0 @ 0x7ffb4a414740] picking rgb24 out of 7 ref:yuv420p alpha:0
    
[auto-inserted scaler 0 @ 0x7ffb4a414740] w:704 h:480 fmt:yuv420p sar:200/219 -> w:704 h:480 fmt:rgb24 sar:200/219 flags:0x4
    
[png @ 0x7ffb4a831000] detected 4 logical cores
    
[mp3 @ 0x7ffb4a831600] Invalid audio stream. Exactly one MP3 audio stream is required.
    
Output #0, image2, to 'sample-frames/frame%d.png':
    
  Metadata:
    
    encoder         : Lavf54.63.104
    
    Stream #0:0, 0, 1/90000: Video: png, rgb24, 704x480 [SAR 200:219 DAR 880:657], 1001/30000, q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
    
Output #1, mp3, to 'sample.mp3':
    
  Metadata:
    
    encoder         : Lavf54.63.104
    
    Stream #1:0, 0, 1/90000: Audio: mp2, 48000 Hz, stereo, 64 kb/s
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (mpeg1video -> png)
    
  Stream #0:1 -> #1:0 (copy)
    
Could not write header for output file #1 (incorrect codec parameters ?): Invalid argument
    
Statistics: 4542608 bytes read, 2 seeks

    I found the code above from : http://kwlug.org/node/854
    I did a few edits removing the -sameq and replacing it with -qscale:a 0 which probably is wrong.

  • What is wrong with the following ffmpeg command

    9 juin 2017, par Brad

    What is wrong with the following ffmpeg command ? Originally this had -sameq instead of the -qscale:a 0

    Command :

    ffmpeg -loglevel debug -threads 4 -i sample-in.mpg -ss 00:00:01 -t 00:00:05 -f image2 -y sample-frames/frame%d.png -acodec copy -qscale:a 0  -y sample.mp3

    Output

    ffmpeg version 1.2.1 Copyright (c) 2000-2013 the FFmpeg developers
    
  built on Jul  9 2013 04:36:42 with Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/1.2.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=cc --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid --enable-ffplay
    
  libavutil      52. 18.100 / 52. 18.100
    
  libavcodec     54. 92.100 / 54. 92.100
    
  libavformat    54. 63.104 / 54. 63.104
    
  libavdevice    54.  3.103 / 54.  3.103
    
  libavfilter     3. 42.103 /  3. 42.103
    
  libswscale      2.  2.100 /  2.  2.100
    
  libswresample   0. 17.102 /  0. 17.102
    
  libpostproc    52.  2.100 / 52.  2.100
    

    
Splitting the commandline.
    
Reading option '-loglevel' ... matched as option 'loglevel' (set libav* logging level) with argument 'debug'.
    
Reading option '-threads' ... matched as AVOption 'threads' with argument '4'.
    
Reading option '-i' ... matched as input file with argument 'sample-in.mpg'.
    
Reading option '-ss' ... matched as option 'ss' (set the start time offset) with argument '00:00:01'.
    
Reading option '-t' ... matched as option 't' (record or transcode "duration" seconds of audio/video) with argument '00:00:05'.
    
Reading option '-f' ... matched as option 'f' (force format) with argument 'image2'.
    
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
    
Reading option 'sample-frames/frame%d.png' ... matched as output file.
    
Reading option '-acodec' ... matched as option 'acodec' (force audio codec ('copy' to copy stream)) with argument 'copy'.
    
Reading option '-qscale:a' ... matched as option 'qscale' (use fixed quality scale (VBR)) with argument '0'.
    
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
    
Reading option 'sample.mp3' ... matched as output file.
    
Finished splitting the commandline.
    
Parsing a group of options: global .
    
Applying option loglevel (set libav* logging level) with argument debug.
    
Applying option y (overwrite output files) with argument 1.
    
    Last message repeated 1 times
    
Successfully parsed a group of options.
    
Parsing a group of options: input file sample-in.mpg.
    
Successfully parsed a group of options.
    
Opening an input file: sample-in.mpg.
    
[mpeg @ 0x7ffb4a80f200] Format mpeg probed with size=16384 and score=52
    
[mpeg @ 0x7ffb4a80f200] File position before avformat_find_stream_info() is 0
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2500
    
[mpeg @ 0x7ffb4a80f200] Probe with size=2002, packets=1 detected mpegvideo with score=25
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2499
    
[mpeg @ 0x7ffb4a80f200] Probe with size=4043, packets=2 detected mpegvideo with score=25
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2498
    
[mpeg @ 0x7ffb4a80f200] Probe with size=6084, packets=3 detected mpegvideo with score=25
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2497
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2496
    
[mpeg @ 0x7ffb4a80f200] Probe with size=10166, packets=5 detected mpegvideo with score=25
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2495
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2494
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2493
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2492
    
[mpeg @ 0x7ffb4a80f200] Probe with size=18330, packets=9 detected mpegvideo with score=25
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2491
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2490
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2489
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2488
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2487
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2486
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2485
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2484
    
[mpeg @ 0x7ffb4a80f200] Probe with size=34658, packets=17 detected mpegvideo with score=25
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2483
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2482
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2481
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2480
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2479
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2478
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2477
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2476
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2475
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2474
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2473
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2472
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2471
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2470
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2469
    
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2468
    
[mpeg @ 0x7ffb4a80f200] Probe with size=67266, packets=33 detected mpegvideo with score=51
    
[mpeg @ 0x7ffb4a80f200] probed stream 0
    
[mpeg @ 0x7ffb4a80f200] first_dts 86997 not matching first dts 93003 in the queue
    
    Last message repeated 3 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 86997 not matching first dts 108018 in the queue
    
    Last message repeated 3 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 111600 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 135360 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 156960 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 180720 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 202320 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 226080 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 247680 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 271440 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 295200 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 316800 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 340560 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 362160 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 385920 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 407520 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 431280 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 452880 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 476640 in the queue
    
    Last message repeated 8 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 498240 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 522000 in the queue
    
    Last message repeated 9 times
    
[mpeg @ 0x7ffb4a80f200] max_analyze_duration 5000000 reached at 5005000 microseconds
    
[mpeg @ 0x7ffb4a80f200] File position after avformat_find_stream_info() is 0
    
Input #0, mpeg, from 'sample-in.mpg':
    
  Duration: 00:00:05.97, start: 1.000000, bitrate: 6827 kb/s
    
    Stream #0:0[0x1e0], 152, 1/90000: Video: mpeg1video, yuv420p, 704x480 [SAR 200:219 DAR 880:657], 1001/30000, 104857 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 29.97 tbc
    
    Stream #0:1[0x1c0], 211, 1/90000: Audio: mp2, 48000 Hz, stereo, s16p, 64 kb/s
    
Successfully opened the file.
    
Parsing a group of options: output file sample-frames/frame%d.png.
    
Applying option ss (set the start time offset) with argument 00:00:01.
    
Applying option t (record or transcode "duration" seconds of audio/video) with argument 00:00:05.
    
Applying option f (force format) with argument image2.
    
Successfully parsed a group of options.
    
Opening an output file: sample-frames/frame%d.png.
    
Successfully opened the file.
    
Parsing a group of options: output file sample.mp3.
    
Applying option acodec (force audio codec ('copy' to copy stream)) with argument copy.
    
Applying option qscale:a (use fixed quality scale (VBR)) with argument 0.
    
Successfully parsed a group of options.
    
Opening an output file: sample.mp3.
    
Successfully opened the file.
    
[buffer @ 0x7ffb4a411e40] Setting entry with key 'video_size' to value '704x480'
    
[buffer @ 0x7ffb4a411e40] Setting entry with key 'pix_fmt' to value '0'
    
[buffer @ 0x7ffb4a411e40] Setting entry with key 'time_base' to value '1/90000'
    
[buffer @ 0x7ffb4a411e40] Setting entry with key 'pixel_aspect' to value '200/219'
    
[buffer @ 0x7ffb4a411e40] Setting entry with key 'sws_param' to value 'flags=2'
    
[buffer @ 0x7ffb4a411e40] Setting entry with key 'frame_rate' to value '30000/1001'
    
[graph 0 input from stream 0:0 @ 0x7ffb4a411de0] w:704 h:480 pixfmt:yuv420p tb:1/90000 fr:30000/1001 sar:200/219 sws_param:flags=2
    
[scale @ 0x7ffb4a414800] Setting 'w' to value '0'
    
[scale @ 0x7ffb4a414800] Setting 'h' to value '0'
    
[scale @ 0x7ffb4a414800] Setting 'flags' to value '0x4'
    
[auto-inserted scaler 0 @ 0x7ffb4a414740] w:0 h:0 flags:'0x4' interl:0
    
[format @ 0x7ffb4a42aa20] auto-inserting filter 'auto-inserted scaler 0' between the filter 'Parsed_null_0' and the filter 'format'
    
[auto-inserted scaler 0 @ 0x7ffb4a414740] picking rgb24 out of 7 ref:yuv420p alpha:0
    
[auto-inserted scaler 0 @ 0x7ffb4a414740] w:704 h:480 fmt:yuv420p sar:200/219 -> w:704 h:480 fmt:rgb24 sar:200/219 flags:0x4
    
[png @ 0x7ffb4a831000] detected 4 logical cores
    
[mp3 @ 0x7ffb4a831600] Invalid audio stream. Exactly one MP3 audio stream is required.
    
Output #0, image2, to 'sample-frames/frame%d.png':
    
  Metadata:
    
    encoder         : Lavf54.63.104
    
    Stream #0:0, 0, 1/90000: Video: png, rgb24, 704x480 [SAR 200:219 DAR 880:657], 1001/30000, q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
    
Output #1, mp3, to 'sample.mp3':
    
  Metadata:
    
    encoder         : Lavf54.63.104
    
    Stream #1:0, 0, 1/90000: Audio: mp2, 48000 Hz, stereo, 64 kb/s
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (mpeg1video -> png)
    
  Stream #0:1 -> #1:0 (copy)
    
Could not write header for output file #1 (incorrect codec parameters ?): Invalid argument
    
Statistics: 4542608 bytes read, 2 seeks

    I found the code above from : http://kwlug.org/node/854
    I did a few edits removing the -sameq and replacing it with -qscale:a 0 which probably is wrong.

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