pi@raspberry:/media/usb1 $ sudo ffmpeg -i VTS_01_2.VOB -c:a copy -c:v h264_omx -b:v 256k -hls_time 3 -hls_wrap 30 "/media/usb1/foo.m3u8"
ffmpeg version N-86690-g06a66e7 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 4.9.2 (Raspbian 4.9.2-10)
  configuration: --arch=armhf --target-os=linux --enable-gpl --enable-libx264 --enable-nonfree --enable-mmal --enable-omx --enable-omx-rpi
  libavutil      55. 67.100 / 55. 67.100
  libavcodec     57.100.103 / 57.100.103
  libavformat    57. 75.100 / 57. 75.100
  libavdevice    57.  7.100 / 57.  7.100
  libavfilter     6. 94.100 /  6. 94.100
  libswscale      4.  7.101 /  4.  7.101
  libswresample   2.  8.100 /  2.  8.100
  libpostproc    54.  6.100 / 54.  6.100
Input #0, mpeg, from 'VTS_01_2.VOB':
  Duration: 00:21:01.98, start: 1249.688633, bitrate: 6802 kb/s
    Stream #0:0[0x1bf]: Data: dvd_nav_packet
    Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, bottom first), 720x480 [SAR 32:27 DAR 16:9], 29.83 fps, 59.94 tbr, 90k tbn, 59.94 tbc
    Stream #0:2[0x80]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s
    Stream #0:3[0x81]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
    Stream #0:4[0x82]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s
    Stream #0:5[0x83]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s
    Stream #0:6[0x84]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s
    Stream #0:7[0x85]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 384 kb/s
    Stream #0:8[0x86]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
    Stream #0:9[0x20]: Subtitle: dvd_subtitle
    Stream #0:10[0x24]: Subtitle: dvd_subtitle
    Stream #0:11[0x25]: Subtitle: dvd_subtitle
    Stream #0:12[0x23]: Subtitle: dvd_subtitle
    Stream #0:13[0x22]: Subtitle: dvd_subtitle
    Stream #0:14[0x21]: Subtitle: dvd_subtitle
Stream mapping:
  Stream #0:1 -> #0:0 (mpeg2video (native) -> h264 (h264_omx))
  Stream #0:2 -> #0:1 (copy)
Press [q] to stop, [?] for help
[h264_omx @ 0x301c940] Using OMX.broadcom.video_encode
[hls @ 0x2fedfb0] Opening '/media/usb1/foo0.ts' for writing
Output #0, hls, to '/media/usb1/foo.m3u8':
  Metadata:
    encoder         : Lavf57.75.100
    Stream #0:0: Video: h264 (h264_omx), yuv420p, 720x480 [SAR 32:27 DAR 16:9], q=2-31, 256 kb/s, 29.97 fps, 90k tbn, 29.97 tbc
    Metadata:
      encoder         : Lavc57.100.103 h264_omx
    Stream #0:1: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s
[hls @ 0x2fedfb0] Non-monotonous DTS in output stream 0:0; previous: 0, current: 0; changing to 1. This may result in incorrect timestamps in the output file.
[hls @ 0x2fedfb0] Opening '/media/usb1/foo1.ts' for writinge=N/A dup=17 drop=0 speed=3.26x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo2.ts' for writinge=N/A dup=37 drop=0 speed=3.23x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo3.ts' for writinge=N/A dup=56 drop=0 speed=3.24x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo4.ts' for writinge=N/A dup=75 drop=0 speed= 3.2x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[mpegts @ 0x2f60be0] H.264 bitstream error, startcode missing, size 085 drop=0 speed= 3.2x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo5.ts' for writinge=N/A dup=95 drop=0 speed=3.22x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[mpeg @ 0x2d692a0] New subtitle stream 0:15 at pos:11780110 and DTS:1266.95sp=0 speed=3.21x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo6.ts' for writinge=N/A dup=114 drop=0 speed= 3.2x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo7.ts' for writinge=N/A dup=133 drop=0 speed= 3.2x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo8.ts' for writinge=N/A dup=151 drop=0 speed=3.17x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo9.ts' for writinge=N/A dup=168 drop=0 speed=3.14x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo10.ts' for writing=N/A dup=186 drop=0 speed=3.11x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo11.ts' for writing=N/A dup=202 drop=0 speed=3.08x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo12.ts' for writing=N/A dup=221 drop=0 speed=3.07x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo13.ts' for writing=N/A dup=238 drop=0 speed=3.06x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo14.ts' for writing=N/A dup=257 drop=0 speed=3.07x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo15.ts' for writing=N/A dup=276 drop=0 speed=3.07x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo16.ts' for writing=N/A dup=295 drop=0 speed=3.08x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo17.ts' for writing=N/A dup=313 drop=0 speed=3.07x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo18.ts' for writing=N/A dup=332 drop=0 speed=3.07x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo19.ts' for writing=N/A dup=349 drop=0 speed=3.06x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[mpegts @ 0x2f60be0] H.264 bitstream error, startcode missing, size 0
[hls @ 0x2fedfb0] Opening '/media/usb1/foo20.ts' for writing=N/A dup=368 drop=0 speed=3.06x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo21.ts' for writing=N/A dup=386 drop=0 speed=3.06x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo22.ts' for writing=N/A dup=395 drop=0 speed=3.06x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[mpegts @ 0x2f60be0] H.264 bitstream error, startcode missing, size 0414 drop=0 speed=3.06x
[mpegts @ 0x2f60be0] H.264 bitstream error, startcode missing, size 0
[mpegts @ 0x2f60be0] H.264 bitstream error, startcode missing, size 0
[hls @ 0x2fedfb0] Opening '/media/usb1/foo23.ts' for writing=N/A dup=422 drop=0 speed=3.05x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo24.ts' for writing=N/A dup=439 drop=0 speed=3.04x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo25.ts' for writing=N/A dup=456 drop=0 speed=3.03x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo26.ts' for writing=N/A dup=474 drop=0 speed=3.03x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo27.ts' for writing=N/A dup=494 drop=0 speed=3.04x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo28.ts' for writing=N/A dup=503 drop=0 speed=3.04x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo29.ts' for writing=N/A dup=531 drop=0 speed=3.04x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo0.ts' for writinge=N/A dup=540 drop=0 speed=3.04x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo1.ts' for writinge=N/A dup=565 drop=0 speed=3.03x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo2.ts' for writinge=N/A dup=575 drop=0 speed=3.03x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[mpegts @ 0x2f60be0] H.264 bitstream error, startcode missing, size 0586 drop=0 speed=3.04x
[mpegts @ 0x2f60be0] H.264 bitstream error, startcode missing, size 0
[mpegts @ 0x2f60be0] H.264 bitstream error, startcode missing, size 0
[hls @ 0x2fedfb0] Opening '/media/usb1/foo3.ts' for writinge=N/A dup=594 drop=0 speed=3.04x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo4.ts' for writinge=N/A dup=615 drop=0 speed=3.05x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo5.ts' for writinge=N/A dup=634 drop=0 speed=3.05x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo6.ts' for writinge=N/A dup=653 drop=0 speed=3.06x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo7.ts' for writinge=N/A dup=671 drop=0 speed=3.05x
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
[hls @ 0x2fedfb0] Opening '/media/usb1/foo.m3u8.tmp' for writing
frame= 3332 fps= 92 q=-0.0 Lsize=N/A time=00:01:51.11 bitrate=N/A dup=673 drop=0 speed=3.05x
video:3591kB audio:6077kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Exiting normally, received signal 2.