On Wed, Nov 21, 2018 at 6:23 PM sean darcy <seandar...@gmail.com> wrote:
> I have a 1949 french movie. I need the subtitles, my french isn't good > enough any more ! > > The problem is that the subtitles stream doesn't start until 85 seconds > into the movie. I've map'd the subtitle stream , but the output stream > isn't created. I assume that's because there's no input subtitles stream > at the start. > > I've tried: > ffmpeg -i in -ss 00:01:30 -i in -map 0:1 -map 0:2 -map 1:4 .... but that > didn't work since ffmpeg still looked for the subtitles stream at the > beginning, not at the seek position. In any event I think that would > have had the subtitles appearing 90 secs before the dialog. > > > long output. You can see the subtitle streams appear at 85 secs. > > ffmpeg -i VTS_01_1.VOB -r 24000/1001 -map v -map a -map 0:4 -c:v libx264 > -crf 20 -tune film -preset slow -c:a copy -c:s copy -dn -t 00:02:00 > short-1949-subs.mp4 > ffmpeg version git-snapshot-20181112-RPMFusion Copyright (c) 2000-2018 > the FFmpeg developers > built with gcc 8 (GCC) > configuration: --prefix=/usr --bindir=/usr/bin > --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg > --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 > --optflags='-O2 -ffast-math -march=native -ftree-vectorize > -fomit-frame-pointer -pipe -fPIC' --enable-bzlib --disable-crystalhd > --enable-fontconfig --enable-frei0r --enable-gcrypt --enable-gnutls > --enable-ladspa --enable-libass --enable-libbluray --enable-libcdio > --enable-libdav1d --enable-libfdk-aac --enable-nonfree > --enable-indev=jack --enable-libfreetype --enable-libfribidi > --enable-libgsm --enable-libmp3lame --enable-openal --enable-opencl > --disable-libopencv --enable-opengl --enable-libopenjpeg > --enable-libopus --enable-libpulse --enable-libsoxr --enable-libspeex > --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libvpx > --enable-libwebp --enable-libx264 --enable-libx265 --enable-avfilter > --enable-postproc --enable-pthreads --disable-static --enable-shared > --enable-gpl --enable-version3 --enable-nonfree --disable-debug > --enable-stripping --shlibdir=/usr/lib64 --enable-runtime-cpudetect > libavutil 56. 23.101 / 56. 23.101 > libavcodec 58. 39.100 / 58. 39.100 > libavformat 58. 22.100 / 58. 22.100 > libavdevice 58. 6.100 / 58. 6.100 > libavfilter 7. 43.100 / 7. 43.100 > libswscale 5. 4.100 / 5. 4.100 > libswresample 3. 4.100 / 3. 4.100 > libpostproc 55. 4.100 / 55. 4.100 > Input #0, mpeg, from 'VTS_01_1.VOB': > Duration: 00:29:44.30, start: 0.045500, bitrate: 4814 kb/s > Stream #0:0[0x1bf]: Data: dvd_nav_packet > Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, > progressive), 720x480 [SAR 8:9 DAR 4:3], Closed Captions, 29.33 fps, > 59.94 tbr, 90k tbn, 59.94 tbc > Stream #0:2[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s > Stream mapping: > Stream #0:1 -> #0:0 (mpeg2video (native) -> h264 (libx264)) > Stream #0:2 -> #0:1 (copy) > Press [q] to stop, [?] for help > [libx264 @ 0x149cf40] using SAR=8/9 > [libx264 @ 0x149cf40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 > AVX FMA3 BMI2 AVX2 > [libx264 @ 0x149cf40] profile High, level 3.0, 4:2:0, 8-bit > [libx264 @ 0x149cf40] 264 - core 157 - H.264/MPEG-4 AVC codec - Copyleft > 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 > deblock=1:-1:-1 analyse=0x3:0x113 me=hex subme=8 psy=1 psy_rd=1.00:0.15 > mixed_ref=1 me_range=16 chroma_me=1 trellis=2 8x8dct=1 cqm=0 > deadzone=21,11 fast_pskip=1 chroma_qp_offset=-3 threads=12 > lookahead_threads=2 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=3 weightb=1 open_gop=0 weightp=2 keyint=250 > keyint_min=23 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=crf > mbtree=1 crf=20.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 > aq=1:1.00 > [mp4 @ 0x1470840] track 1: codec frame size is not set > Output #0, mp4, to 'short--1949-subs.mp4': > Metadata: > encoder : Lavf58.22.100 > Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, > 720x480 [SAR 8:9 DAR 4:3], q=-1--1, 23.98 fps, 24k tbn, 23.98 tbc > Metadata: > encoder : Lavc58.39.100 libx264 > Side data: > cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1 > Stream #0:1: Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, stereo, > fltp, 192 kb/s > [mpeg2video @ 0x14723c0] ac-tex damaged at 38 2500:01:03.64 > bitrate=3459.7kbits/s dup=1 drop=0 speed=3.63x > [mpeg2video @ 0x14723c0] Warning MVs not available > [mpeg2video @ 0x14723c0] concealing 225 DC, 225 AC, 225 MV errors in I > frame > [mpeg @ 0x1469c40] New subtitle stream 0:3 at pos:50339854 and > DTS:87.4328sbits/s dup=1 drop=0 speed= 3.3x > [mpeg @ 0x1469c40] New subtitle stream 0:4 at pos:50493454 and DTS:87.6664s > .......... > > ffprobe short-1949-subs.mp4 > ffprobe version git-snapshot-20181112-RPMFusion Copyright (c) 2007-2018 > the FFmpeg developers > built with gcc 8 (GCC) > configuration: --prefix=/usr --bindir=/usr/bin > --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg > --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 > --optflags='-O2 -ffast-math -march=native -ftree-vectorize > -fomit-frame-pointer -pipe -fPIC' --enable-bzlib --disable-crystalhd > --enable-fontconfig --enable-frei0r --enable-gcrypt --enable-gnutls > --enable-ladspa --enable-libass --enable-libbluray --enable-libcdio > --enable-libdav1d --enable-libfdk-aac --enable-nonfree > --enable-indev=jack --enable-libfreetype --enable-libfribidi > --enable-libgsm --enable-libmp3lame --enable-openal --enable-opencl > --disable-libopencv --enable-opengl --enable-libopenjpeg > --enable-libopus --enable-libpulse --enable-libsoxr --enable-libspeex > --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libvpx > --enable-libwebp --enable-libx264 --enable-libx265 --enable-avfilter > --enable-postproc --enable-pthreads --disable-static --enable-shared > --enable-gpl --enable-version3 --enable-nonfree --disable-debug > --enable-stripping --shlibdir=/usr/lib64 --enable-runtime-cpudetect > libavutil 56. 23.101 / 56. 23.101 > libavcodec 58. 39.100 / 58. 39.100 > libavformat 58. 22.100 / 58. 22.100 > libavdevice 58. 6.100 / 58. 6.100 > libavfilter 7. 43.100 / 7. 43.100 > libswscale 5. 4.100 / 5. 4.100 > libswresample 3. 4.100 / 3. 4.100 > libpostproc 55. 4.100 / 55. 4.100 > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'short--1949-subs.mp4': > Metadata: > major_brand : isom > minor_version : 512 > compatible_brands: isomiso2avc1mp41 > encoder : Lavf58.22.100 > Duration: 00:02:00.04, start: 0.000000, bitrate: 4345 kb/s > Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, > 720x480 [SAR 8:9 DAR 4:3], 4148 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, > 47.95 tbc (default) > Metadata: > handler_name : VideoHandler > Stream #0:1(und): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, stereo, > fltp, 192 kb/s (default) > Metadata: > handler_name : SoundHandler > Side data: > audio service type: main > > > Thanks for any help. > > DVDs have bitmap-type subtitles. To watch it on a standard MP4 file you'll need to OCR it to a text-type subtitle format (a thing that ffmpeg doesn't do as far as I know) or burn them on the video track. This last one can be made with ffmpeg using filters, as explained in https://trac.ffmpeg.org/wiki/HowToBurnSubtitlesIntoVideo _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
