пн, 12 февр. 2024 г., 02:02 Terje J. Hanssen <[email protected]>:
> > > Den 11.02.2024 04:36, skrev Terje J. Hanssen: > > > > Den 11.02.2024 00:57, skrev Andrew Randrianasulu: > > > > сб, 10 февр. 2024 г., 21:10 Terje J. Hanssen via Cin < > [email protected]>: > >> There are two things I want to add to my current intermediate DVD mpg >> video files created with ffmpeg, and/or to the DVD tree structure created >> with DeVeDeNG: >> >> 1. Create and add a Navigation menu in the beginning >> This will be an upcoming, separate topic >> >> 2. Create and add Soft Subtitles as simple text info commentaries to the >> video content >> This is the topic for this post. >> >> >> The reason that I want *Soft* Subtitles as a separate text file stream >> related to timing, is because this should be possible to *add* or import >> to an existing video file without the need to re-encode. It should also be >> flexible to display on or off during playback, if I have understood this >> correct so far. >> > > > IIRC you can't add text-based subtitles to DVD video. Blu-ray yes, dvd no > (both can use palletized reduced-color graphical subtitles) ... so at least > rendering text as palletized picture and then muxing it into mpeg stream is > unavoidable step,as far as I understand. > > > I have prepared a new video file and will try to add sub-titles to-morrow > > http://www.g-raffa.eu/Cinelerra/HOWTO/subtitles.html#_how_to_create_soft_subtitles > > > > There are written several articles and answers to forum topics about > adding soft subtitles to video. > My best but only partly working attempt so far, is by applying this > solution on StackOverflow: > > > > > *Use ffmpeg to add text subtitles: NOTE: This solution adds the subtitles > to the video as a separate optional (and user-controlled) subtitle track. > https://stackoverflow.com/questions/8672809/use-ffmpeg-to-add-text-subtitles > <https://stackoverflow.com/questions/8672809/use-ffmpeg-to-add-text-subtitles> > *1) First I created a DVD-video compliant MPG file with pcm audio from DV > source (as previously) > > ffmpeg -hide_banner -i DV09-1993.dv -f dvd -target pal-dvd -aspect 4:3 > -b:v 8M -maxrate 8M -minrate 8M -bufsize 20M -muxrate 20M -mbd rd -trellis > 1 -cmp 0 -subcmp 2 -c:a pcm_dvd DV09-1993.mpg > > > 2) Created the attached srt subtitle file: > > DVD-09-1993_subtitle.srt > > > > 3) Added (muxed) the soft, external subtitle file (2) as a separate track > to the mpg video file (1) > > ffmpeg -hide_banner -i DV09-1993.mpg -i DVD-09-1993_subtitle.srt -c:v copy > -c:a copy -c:s copy DV09-1993+srt.mpg > > [mpeg @ 0x55aac13139c0] start time for stream 0 is not set in > estimate_timings_from_pts > Input #0, mpeg, from 'DV09-1993.mpg': > Duration: 00:28:04.44, start: 0.540000, bitrate: 9701 kb/s > Stream #0:0[0x1bf]: Data: dvd_nav_packet > Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, progressive), > 720x576 [SAR 16:15 DAR 4:3], 25 fps, 25 tbr, 90k tbn > Side data: > cpb: bitrate max/min/avg: 9000000/0/0 buffer size: 1835008 > vbv_delay: N/A > Stream #0:2[0xa0]: Audio: pcm_dvd, 48000 Hz, stereo, s16, 1536 kb/s > Input #1, srt, from 'DVD-09-1993_subtitle.srt': > Duration: N/A, bitrate: N/A > Stream #1:0: Subtitle: subrip > > [mpeg @ 0x55aac134b140] pcm_dvd in MPEG-1 system streams is not widely > supported, consider using the vob or the dvd muxer to force a MPEG-2 > program stream. > Output #0, mpeg, to 'DV09-1993+srt.mpg': > Metadata: > encoder : Lavf60.16.100 > Stream #0:0: Video: mpeg2video (Main), yuv420p(tv, progressive), 720x576 > [SAR 16:15 DAR 4:3], q=2-31, 25 fps, 25 tbr, 90k tbn > Side data: > cpb: bitrate max/min/avg: 9000000/0/0 buffer size: 1835008 > vbv_delay: N/A > Stream #0:1: Audio: pcm_dvd, 48000 Hz, stereo, s16, 1536 kb/s > Stream #0:2: Subtitle: subrip > Stream mapping: > Stream #0:1 -> #0:0 (copy) > Stream #0:2 -> #0:1 (copy) > Stream #1:0 -> #0:2 (copy) > Press [q] to stop, [?] for help > [out#0/mpeg @ 0x55aac134af80] video:1644910kB audio:316303kB subtitle:0kB > other streams:0kB global headers:0kB muxing overhead: 0.561824% > size= 1972232kB time=00:28:04.44 bitrate=9591.6kbits/s speed= 378x > > > 4) Successful Playback of the final video and Audio with subtitles using a > "reinforced" FFplay command - also found on StackOverflow > https://stackoverflow.com/questions/50175075/can-ffplay-view-subtitles > > ffplay -hide_banner -vf subtitles=DVD-09-1993_subtitle.srt > DV09-1993+srt.mpg > isn't this command just uses external srt and not muxed one? Input #0, mpeg, from 'DV09-1993+srt.mpg':= 0KB sq= 0B f=0/0 > Duration: 00:28:04.45, start: 0.540000, bitrate: 9591 kb/s > Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, progressive), > 720x576 [SAR 16:15 DAR 4:3], 25 fps, 25 tbr, 90k tbn > Side data: > cpb: bitrate max/min/avg: 9000000/0/0 buffer size: 1835008 > vbv_delay: N/A > Stream #0:1[0xa0]: Audio: pcm_dvd, 48000 Hz, stereo, s16, 1536 kb/s > [Parsed_subtitles_0 @ 0x7f7368464340] Shaper: FriBidi 0.19.6 (SIMPLE) > HarfBuzz-ng 3.4.0 (COMPLEX) > [Parsed_subtitles_0 @ 0x7f7368464340] Using font provider fontconfig > [Parsed_subtitles_0 @ 0x7f7368464340] fontselect: (Arial, 400, 0) -> > /usr/share/fonts/truetype/LiberationSans-Regular.ttf, 0, LiberationSans > 39.75 A-V: 0.002 fd= 0 aq= 190KB vq= 1222KB sq= 0B f=0/0 > > > 5) Playback using VLC > > - OK playback of video and subtitles when adding the subtitle file > - BUT: The AUDIO is lost in VLC !? > - Have looked into several menu items (unmute and force volume on) > > > Additional I wonder: > > du -sh DV*.mpg > > 2,0G DV09-1993.mpg (1) > 1,9G DV09-1993+srt.mpg (3) > > 6) Why is the merged (subtitled) file (3) smaller than the initial file > (1)? > Even that the srt file is very small, it should rather be opposite > ......... > > 7) And why the ffmpeg output (3), when the initial input mpg file (1) was > created using "-f dvd -target pal-dvd", which I thought was just MPEG-2 and > vob? > > [mpeg @ 0x55aac134b140] pcm_dvd in MPEG-1 system streams is not widely > supported, consider using the vob or the dvd muxer to force a MPEG-2 > program stream. > > > 8) DevedeNG got so far an error while creating the DVD iso from (3) > Tested the movie file in the tree structure with VLC, and also that > without audio..... > > > > > But may be those DVD creation guis can do srt => dvd_sub conversion for > you ? > >> >> 2.1 Preferably I want to add/import subtitles as fast and easy using GUI >> interactive tools like DeVeDeNG or VLC if possible? >> Next thereafter could be using the more time consuming ffmpeg >> https://www.baeldung.com/linux/subtitles-ffmpeg#how-to-add-soft-subtitles >> >> 2.2 So is the question if learning a special subtitle editor is necessary >> to create the text file easier, like one of these 5 >> https://www.debugpoint.com/3-great-subtitle-editors-in-linux-systems/ >> >> Tip, suggestions or experience how to do this? >> >> >> >> >> >> >> >> -- >> Cin mailing list >> [email protected] >> https://lists.cinelerra-gg.org/mailman/listinfo/cin >> > > >
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