Am 2018-02-22 um 14:43 schrieb Nicolas George: > Adi Marvillo (2018-02-22): >> Thanks Steve and ZikZak. I've dumped the DVD with mencoder onto the HDD >> but the chapters are still lost. I thought the chapter marks are stored >> in Stream #0:0 below but they are not as VLC nor ffprobe don't show them... >> I wanted to process the vob-file with ffmpeg afterwards ;) >> FYI: I didn't encode anything in this dumping-step in order not to loose >> quality. >> I don't understand where the chapter information is stored in the DVDs. >> Anybody knows? > On DVDs, the chapter information, like all the rest of the metadata > (language of the streams, palette of the subtitles, etc.), is stored in > the IFO files. MPlayer can read them when reading the DVD directly > through libdvdread/libdvdcss. FFmpeg, on the other hand, does not know > how to read DVDs directly, and the information is not present in the VOB > files. > > Also, concatenating the VOB files like you did will not work correctly, > due to timestamps resets and menu data interleaved with the actual video > data. You can use the "dvd2concat" script distributed along with FFmpeg > to generate a concat script that only takes the relevant part of the VOB > files and controls the timestamp resets. It does not handle chapters, > but that could be added with a little effort. > >> Am 2018-02-21 um 17:27 schrieb Steve Boyer: > Please remember that top-posting is forbidden on this list. If you do > not know what it means, look it up. > > Regards, > > > > _______________________________________________ > ffmpeg-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". Hi Nicolas, thanks for your support! Meanwhile I managed to extract the chapterinformation with the command "mplayer dvd://TITLE -identify >> chapterfile.txt". This command dumps all metainformation of the current title into chapterfile.txt. TITLE has to be replaced by the number indicating the correct title on the current source - in this case it's 7 . I think this is "ID_DVD_TITLE_8_CHAPTERS=38" in chapterfile.txt (see below) when beginning to count with the index 0 instead of ID_DVD_TITLE_1_CHAPTERS=5
Here a part of chapterfile-dump: adi@HOST:/media/adi/bd29891a-00d1-42f2-997c-6d3073626884/Videos/monsterBox$ cat chapterfile.txt MPlayer 1.3.0 (Debian), built with gcc-6.2.1 (C) 2000-2016 MPlayer Team Playing dvd://11. ID_DVD_TITLES=15 ID_DVD_TITLE_1_CHAPTERS=5 ID_DVD_TITLE_1_ANGLES=1 ID_DVD_TITLE_2_CHAPTERS=11 ID_DVD_TITLE_2_ANGLES=1 ID_DVD_TITLE_3_CHAPTERS=4 ID_DVD_TITLE_3_ANGLES=1 ID_DVD_TITLE_4_CHAPTERS=4 ID_DVD_TITLE_4_ANGLES=1 ID_DVD_TITLE_5_CHAPTERS=5 ID_DVD_TITLE_5_ANGLES=1 ID_DVD_TITLE_6_CHAPTERS=3 ID_DVD_TITLE_6_ANGLES=1 ID_DVD_TITLE_7_CHAPTERS=2 ID_DVD_TITLE_7_ANGLES=1 ID_DVD_TITLE_8_CHAPTERS=38 ID_DVD_TITLE_8_ANGLES=1 ID_DVD_TITLE_9_CHAPTERS=3 ID_DVD_TITLE_9_ANGLES=1 ID_DVD_TITLE_10_CHAPTERS=3 ID_DVD_TITLE_10_ANGLES=1 ID_DVD_TITLE_11_CHAPTERS=14 ID_DVD_TITLE_11_ANGLES=1 ID_DVD_TITLE_12_CHAPTERS=3 ID_DVD_TITLE_12_ANGLES=1 ID_DVD_TITLE_13_CHAPTERS=3 ID_DVD_TITLE_13_ANGLES=1 ID_DVD_TITLE_14_CHAPTERS=3 ID_DVD_TITLE_14_ANGLES=1 ID_DVD_TITLE_15_CHAPTERS=3 ID_DVD_TITLE_15_ANGLES=1 ID_DVD_TITLE_1_LENGTH=5.000 ID_DVD_TITLE_2_LENGTH=174.960 ID_DVD_TITLE_3_LENGTH=74.960 ID_DVD_TITLE_4_LENGTH=74.960 ID_DVD_TITLE_5_LENGTH=99.960 ID_DVD_TITLE_6_LENGTH=49.960 ID_DVD_TITLE_7_LENGTH=127.920 ID_DVD_TITLE_8_LENGTH=258.960 ID_DVD_TITLE_9_LENGTH=138.400 ID_DVD_TITLE_10_LENGTH=170.040 ID_DVD_TITLE_11_LENGTH=6092.080 ID_DVD_TITLE_12_LENGTH=138.880 ID_DVD_TITLE_13_LENGTH=126.760 ID_DVD_TITLE_14_LENGTH=100.040 ID_DVD_TITLE_15_LENGTH=128.000 ID_DVD_DISC_ID=5FFA8A29BAAD6646A0683DA76B86EC39 ID_DVD_VOLUME_ID=XXXXXXXXXXXXXX There are 15 titles on this DVD. ID_DVD_CURRENT_TITLE=11 There are 1 angles in this DVD title. audio stream: 0 format: ac3 (stereo) language: de aid: 128. ID_AUDIO_ID=128 ID_AID_128_LANG=de number of audio channels on disk: 1. subtitle ( sid ): 0 language: de ID_SUBTITLE_ID=0 ID_SID_0_LANG=de number of subtitles on disk: 1 CHAPTERS: 00:00:00.000,00:07:30.720,00:14:29.280,00:24:08.640,00:32:42.240,00:41:30.400,00:49:51.040,00:57:35.200,01:05:51.040,01:11:55.360,01:19:26.560,01:25:59.200,01:30:36.640,01:35:31.840, ID_VIDEO_ID=0 MPEG-PS file format detected. ID_AUDIO_ID=128 VIDEO: MPEG2 720x576 (aspect 3) 25.000 fps 8000.0 kbps (1000.0 kbyte/s) Please see the line beginning with "CHAPTERS:" Interesting: The chaptermarks are exactly 5 sec too late - might be because of "ID_DVD_TITLE_1_LENGTH=5.000" in chapterfile.txt - anyhow I don't understand it, but I accept it. After ripping the XXX.vob with ffmpeg to an XXX.mkv the chaptermarks can easily be included with mkvmerge. Please assure the Syntax below (chapterfile2.txt) adi@HOST:mkvmerge -o OUTPUT.mkv --chapters chapterfile2.txt XXX.mkv adi@HOST:cat chapterfile2.txt # Syntax of chapter textfile for mkvmerge CHAPTER01=00:00:00.000 CHAPTER01NAME=Intro CHAPTER02=00:00:53.500 CHAPTER02NAME=Baby prepares to rock I am not happy with using mkvmerge, because it's much better to combine the chaptermarks with forced keyframes 0.1 sec after the chaptermarks (- forced_key_frames chapter+0.1 ). Please can you help me with this? - I couldn't find the command after searching quite a time in the documentation - it simply didn't work. Questions: How does ffmpeg write chapter marks from a textfile into a mkv-container? Could the option be -map_chapters and what is the correct syntax to use?!? How should the chapter textfile for ffmpeg look - syntax? How can I include a forced keyframe 0.1 sec after the chaptermarks and at certain points? (this test did not work: ffmpeg -i VTS_08_1.VOB -t 00:02:00 -force_key_frames 00:00:05 -g 300 -aspect "16:9" -map 0:v -c:v libx264 -map 0:a -c:a copy forcedkeyframe.mkv) THX Adi _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
