Ripping segmented subtitles from .mpd

[kkycble]

The .mpd: https://ewcdn108.nowe.com/session/15-5-f583-0001000156347512676398/Content/DASH_VOS3/V...799_1645016051

yt-dlp --write-subs --skip-download --external-downloader aria2c --allow-u "https://ewcdn108.nowe.com/session/15-5-3baa-0001000156347512676398/Content/DASH_VOS3/VOD/14450/6735/2ef99f4c-4f76-4194-91e8-b440e534c882/f677841a-9d8f-2ff5-3517-674ba49ef192/manifest.mpd" --all-subs --output sub.vtt

This is the command that I used to download the subtitles. While it successfully combined all the segments into one subtitle file, it doesn't have the correct timestamps. I believe that the subtitles should be in segments of 8 seconds. Is there a way to rip them with the correct timestamps?

The mpd's content:

<?xml version="1.0" encoding="UTF-8" ?>
<MPD profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" mediaPresentationDuration="PT48M48.835S" minBufferTime="PT8.0S" xmlns="urn:mpeg:dash:schema:mpd:2011" xmlns:cenc="urn:mpeg:cenc:2013" xmlns:mspr="urn:microsoft:playready" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:mpeg:dash:schema:mpd:2011 DASH-MPD.xsd">
	<Period>
		<AdaptationSet mimeType="video/mp4" startWithSAP="1" segmentAlignment="true" par="16:9">
			<ContentProtection schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc"></ContentProtection>
			<ContentProtection schemeIdUri="urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95"><mspr:pro xmlns:mspr="urn:microsoft:playready">YAMAAAEAAQBWAzwAVwBSAE0ASABFAEEARABFAFIAIAB4AG0AbABuAHMAPQAiAGgAdAB0AHAAOgAvAC8AcwBjAGgAZQBtAGEAcwAuAG0AaQBjAHIAbwBzAG8AZgB0AC4AYwBvAG0ALwBEAFIATQAvADIAMAAwADcALwAwADMALwBQAGwAYQB5AFIAZQBhAGQAeQBIAGUAYQBkAGUAcgAiACAAdgBlAHIAcwBpAG8AbgA9ACIANAAuADAALgAwAC4AMAAiAD4APABEAEEAVABBAD4APABQAFIATwBUAEUAQwBUAEkATgBGAE8APgA8AEsARQBZAEwARQBOAD4AMQA2ADwALwBLAEUAWQBMAEUATgA+ADwAQQBMAEcASQBEAD4AQQBFAFMAQwBUAFIAPAAvAEEATABHAEkARAA+ADwALwBQAFIATwBUAEUAQwBUAEkATgBGAE8APgA8AEsASQBEAD4AMgB4AHIATQBiAEsAbQBxAHUAVABpAE0AagBOAFUAQwBsAEMAbgBJAHgAdwA9AD0APAAvAEsASQBEAD4APABDAEgARQBDAEsAUwBVAE0APgBpAGcAeQAxACsAWQBkADIARwBvAFUAPQA8AC8AQwBIAEUAQwBLAFMAVQBNAD4APABMAEEAXwBVAFIATAA+AGgAdAB0AHAAcwA6AC8ALwBwAHIAbwBmAGYAaQBjAGkAYQBsAHMAaQB0AGUALgBrAGUAeQBkAGUAbABpAHYAZQByAHkALgBtAGUAZABpAGEAcwBlAHIAdgBpAGMAZQBzAC4AdwBpAG4AZABvAHcAcwAuAG4AZQB0AC8AUABsAGEAeQBSAGUAYQBkAHkALwA8AC8ATABBAF8AVQBSAEwAPgA8AEMAVQBTAFQATwBNAEEAVABUAFIASQBCAFUAVABFAFMAPgA8AEkASQBTAF8ARABSAE0AXwBWAEUAUgBTAEkATwBOAD4AOAAuADAALgAxADYAMQAxAC4AMQAwADAAMQA8AC8ASQBJAFMAXwBEAFIATQBfAFYARQBSAFMASQBPAE4APgA8AC8AQwBVAFMAVABPAE0AQQBUAFQAUgBJAEIAVQBUAEUAUwA+ADwALwBEAEEAVABBAD4APAAvAFcAUgBNAEgARQBBAEQARQBSAD4A</mspr:pro></ContentProtection>
			<ContentProtection schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"></ContentProtection>
			<SegmentTemplate timescale="10000000" presentationTimeOffset="11650000" media="$RepresentationID$/Segment-$Time$.m4v" initialization="$RepresentationID$/init.m4i">
				<SegmentTimeline>
					<S t="11650000" d="80000000" r="365" />
					<S t="29291650000" d="7200000" />
				</SegmentTimeline>
			</SegmentTemplate>
			<Representation width="426" height="240" frameRate="25" codecs="avc3.4d4029" scanType="progressive" sar="639:640" id="stream_0" bandwidth="204000" />
			<Representation width="854" height="480" frameRate="25" codecs="avc3.4d4029" scanType="progressive" sar="1281:1280" id="stream_1" bandwidth="704000" />
			<Representation width="1280" height="720" frameRate="25" codecs="avc3.4d4029" scanType="progressive" sar="1:1" id="stream_2" bandwidth="1472000" />
			<Representation width="1920" height="1080" frameRate="25" codecs="avc3.4d4029" scanType="progressive" sar="1:1" id="stream_3" bandwidth="2808000" />
			<Representation width="1920" height="1080" frameRate="25" codecs="avc3.640029" scanType="progressive" sar="1:1" id="stream_4" bandwidth="4808000" />
		</AdaptationSet>
		<AdaptationSet mimeType="audio/mp4" startWithSAP="1" lang="spa" segmentAlignment="true">
			<ContentProtection schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc"></ContentProtection>
			<ContentProtection schemeIdUri="urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95"><mspr:pro xmlns:mspr="urn:microsoft:playready">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</mspr:pro></ContentProtection>
			<ContentProtection schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"></ContentProtection>
			<SegmentTemplate timescale="10000000" presentationTimeOffset="11650000" media="$RepresentationID$/Segment-$Time$.m4a" initialization="$RepresentationID$/init.m4i">
				<SegmentTimeline>
					<S t="11803333" d="80000000" r="365" />
					<S t="29291803333" d="6400000" />
				</SegmentTimeline>
			</SegmentTemplate>
			<Representation audioSamplingRate="48000" codecs="mp4a.40.2" id="stream_6" bandwidth="96000" />
		</AdaptationSet>
		<AdaptationSet mimeType="audio/mp4" startWithSAP="1" lang="yue" segmentAlignment="true">
			<ContentProtection schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc"></ContentProtection>
			<ContentProtection schemeIdUri="urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95"><mspr:pro xmlns:mspr="urn:microsoft:playready">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</mspr:pro></ContentProtection>
			<ContentProtection schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"></ContentProtection>
			<SegmentTemplate timescale="10000000" presentationTimeOffset="11650000" media="$RepresentationID$/Segment-$Time$.m4a" initialization="$RepresentationID$/init.m4i">
				<SegmentTimeline>
					<S t="11803333" d="80000000" r="365" />
					<S t="29291803333" d="6400000" />
				</SegmentTimeline>
			</SegmentTemplate>
			<Representation audioSamplingRate="48000" codecs="mp4a.40.2" id="stream_5" bandwidth="96000" />
		</AdaptationSet>
		<AdaptationSet mimeType="text/vtt" startWithSAP="1" lang="eng" segmentAlignment="true">
			<SegmentTemplate timescale="10000000" presentationTimeOffset="11650000" media="$RepresentationID$/Segment-$Time$.vtt">
				<SegmentTimeline>
					<S t="11650000" d="80000000" r="365" />
					<S t="29291650000" d="8350000" />
				</SegmentTimeline>
			</SegmentTemplate>
			<Representation codecs="vtt" id="stream_7" bandwidth="15000" />
		</AdaptationSet>
		<AdaptationSet mimeType="text/vtt" startWithSAP="1" lang="yue" segmentAlignment="true">
			<SegmentTemplate timescale="10000000" presentationTimeOffset="11650000" media="$RepresentationID$/Segment-$Time$.vtt">
				<SegmentTimeline>
					<S t="11650000" d="80000000" r="365" />
					<S t="29291650000" d="8350000" />
				</SegmentTimeline>
			</SegmentTemplate>
			<Representation codecs="vtt" id="stream_8" bandwidth="15000" />
		</AdaptationSet>
	</Period>
</MPD>

[[ss]vegeta]

The mpd doesn't open in the browser. Is it geo/time restricted?
Can you post a short example of the timestaps/subs you get, and the timestamps you think they should be?
Try removing --external-downloader aria2c

[kkycble]

The mpd doesn't open in the browser. Is it geo/time restricted?
Can you post a short example of the timestaps/subs you get, and the timestamps you think they should be?
Try removing --external-downloader aria2c

The mpd is from a site that I'm a member of, but the content itself is free. So this means it probably requires login credentials for you to actually get access to the mpd (which I am willing to give in pm). I've also edited the link to attach a token to the mpd, maybe you can view it this time?

Here provides a portion of the download subtitles:

WEBVTT

WEBVTT

00:00:02.440 --> 00:00:04.120
You say they fell asleep at 11?

00:00:04.200 --> 00:00:07.919
Yep. I played on the PlayStation
with Benja.

WEBVTT

00:00:00.000 --> 00:00:03.240
We finished at 23:30
and he told me 'I wanna sleep, Dad'.

00:00:03.320 --> 00:00:04.320
And he fell asleep in 2 minutes.

00:00:05.400 --> 00:00:07.479
Yes, mine also fell after a sec.

WEBVTT

00:00:00.920 --> 00:00:03.800
Whether you like it or not,
when they're alone with us...

00:00:04.680 --> 00:00:07.160
Plus, Mateo is not having
his nap anymore at school.

00:00:07.240 --> 00:00:07.999
-Arrives exhausted!
-So he's exhausted when he arrives.

I've removed the --external-downloader part and the result is the same.

[[ss]vegeta]

It doesn't open even with the token.
Ask nTb how they do it
Matchday-Inside.FC.Barcelona.S01E01.A.Football.Classic.1080p.RKTN.WEB-DL.DDP5.1.x264-NTb.srt

[kkycble]

It doesn't open even with the token.
Ask nTb how they do it

[Attachment 63410 - Click to enlarge]

The thing is there are Traditional Chinese subtitles on this website that I want to rip lol! Appreciate your help tho

[CrymanChen]

It doesn't open even with the token.
Ask nTb how they do it

[Attachment 63410 - Click to enlarge]

Sir, may I ask that who is nTb that you mentioned.
And I also met the same problem as the OP, I wonder if there are any solution to download these independent subtitle fragments, because their timestamps are calculated separately.

[[ss]vegeta]

Sir, may I ask that who is nTb that you mentioned.

It was a joke. They are a scene group.

And I also met the same problem as the OP, I wonder if there are any solution to download these independent subtitle fragments, because their timestamps are calculated separately.

I don't quite remember... but there must be.

[mrmyst]

@kkycble Try this tool, I don't know if it will work https://github.com/nilaoda/N_m3u8DL-RE/

[CrymanChen]

Sir, may I ask that who is nTb that you mentioned.

It was a joke. They are a scene group.

And I also met the same problem as the OP, I wonder if there are any solution to download these independent subtitle fragments, because their timestamps are calculated separately.

I don't quite remember... but there must be.

Thank you sir.

[jack_666]

Each iteration of the subtitle starts at timestamp 0.

What is happening is that the timestamp of the second and subsequent vtt iterations starts exactly where the previous iteration ends. It is an offset.


Start with the first vtt call time = t0 to t1
Second iteration time = t1 to t2 (time at completion of first call is the the time of initiation of second call [time offset])


Keep on going to the last.


(Subtitle Edit allows you do do time offsets)

[CrymanChen]

Each iteration of the subtitle starts at timestamp 0.

What is happening is that the timestamp of the second and subsequent vtt iterations starts exactly where the previous iteration ends. It is an offset.


Start with the first vtt call time = t0 to t1
Second iteration time = t1 to t2 (time at completion of first call is the the time of initiation of second call [time offset])


Keep on going to the last.


(Subtitle Edit allows you do do time offsets)

Thanks, maybe I still couldn't use SubtitleEdit well.
m3u8DL-RE could autofix the timestamps

[ridibunda]

Getting subtitles

For MPD, use yt-dlp

To list available subtitles:
yt-dlp --list-subs --allow-unplayable-formats LINK

To download a selected subtitle (English here):
yt-dlp --skip-download --write-subs --sub-langs "en," --allow-unplayable-formats LINK

To download all subtitles:
yt-dlp --skip-download --write-subs --all-subs --allow-unplayable-formats LINK


For M3U8, use ffmpeg
ffmpeg.exe -i "https://xxx.vtt.m3u8" subtitle.srt

Replace it with your m3u8 link. You will find it Dev Tools > Network (For each subtitle track, there will be a separate M3U8 file)

After downloads, check the subtitles with SubtitleEdit.

I've never encountered a problem.