вт, 13 февр. 2024 г., 03:42 Terje J. Hanssen <[email protected]>:
> > > Den 12.02.2024 00:07, skrev Andrew Randrianasulu: > > > > 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? > > > Yes, I think you'r right, and I wondered a bit about it, but had no > keyboard shortcut for ffplay to test switching subtitles on and off. > > So, afterwards I was more convinced - and fooled, when both Gnome Media > player (Totem) and SMplayer automatically displayed the subtitles. > But that was when the srt subtitle file had the same name as the mpg video > file and was located in the same directory. But this worked as well with > the first mpg file (1). > > The command line "vlc dvd.mpg dvd.srt" also worked with audio. Why both > VLC and MPlayer lost the audio with the srt muxed mpg file I have no idea > about. > ----------------------------- > > From your first reply: > > rendering text as palletized picture and then muxing it into mpeg stream > is unavoidable step,as far as I understand. > But may be those DVD creation guis can do srt => dvd_sub conversion for > you ? > > > Andrey mentioned the "srt2vobsub" program, which seems to the same as the > "srt2vob" script for DVD and "2dsub" for BD vobsub > > https://web.archive.org/web/20130728210155/https://code.google.com/p/srt2vob > > > And from my reference to g-raffa: > > PRE-RENDERED SUBTITLES > they are added (muxed) to the video stream as images with minimal > information but can be separated (demuxed) when needed. They are used in > DVDs and they can be turned on and off. > Most DVD authoring applications are capable of transcoding external > subtitles to pre-rendered subtitles and of muxing them to the video stream. > > > Regarding the last sentece, this article describes the wanted solution - > but on Linux ...? > https://robots.net/tech/how-to-burn-dvd-with-subtitles-srt/ > > while another article points on Handbrake as the best solution for most > users (?) > https://helpdeskgeek.com/how-to/how-to-burn-a-dvd-disc-with-subtitles/ > > > Re 8) above > I also send a request to Raster soft why DeVeDeNG exits with an error > before finishing the mpg video file and creating the iso. > may be this tip from 2015 will help with devede-ng too? https://momentstuff.wordpress.com/2015/10/29/subtitles-with-devede/ > > > > 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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