#23 subtitle track cannot playback by dash.js

Milestone: v1.0 (example)

Status: closed

Owner: nobody

Labels: None

Priority: 5

Updated: 2015-12-10

Created: 2015-12-09

Creator: huo

Private: No

Hi,

i generate a mpd by mp4box, which include 1 video track, 2 audil tarcks and 3 sutitle tracks, then i play it use dash.js.

but the video and audio can play, subtitles cannot show, i dont kown why, could you help me check my file and command?

the detail message as below:

thank you!

mp4box version:

$ MP4Box -version
MP4Box - GPAC version 0.5.2-DEV-revUNKNOWN-UNKNOWN
GPAC Copyright (c) Telecom ParisTech 2000-2012
GPAC Configuration:
Features: GPAC_64_BITS GPAC_DISABLE_3D

mp4 info:

$ MP4Box -info out.mp4
Movie Info
Timescale 1000 - Duration 00:06:51.950
7 track(s)
Fragmented File: no
File Brand isom - version 512
Created: UNKNOWN DATE Modified: UNKNOWN DATE
File has no MPEG4 IOD/OD

Chapters:
Chapter #1 - 00:00:00.000 - "Chapter 1"

iTunes Info:
Encoder Software: Lavf55.48.100
2 UDTA types: meta (1) chpl (1)

Track # 1 Info - TrackID 1 - TimeScale 60000 - Media Duration 00:02:00.003
Track has 1 edit lists: track duration is 00:02:00.004
Media Info: Language "und (und)" - Type "vide:avc1" - 7193 samples
Visual Track layout: x=0 y=0 width=832 height=480
MPEG-4 Config: Visual Stream - ObjectTypeIndication 0x21
AVC/H264 Video - Visual Size 832 x 480
AVC Info: 1 SPS - 1 PPS - Profile High @ Level 3.1
NAL Unit length bits: 32
SPS#1 hash: 45FE9FE525CF527940238E8799F83072E8A2E596
PPS#1 hash: 6648DAA985D842149E548D6CDE2C2151B02BF03F
Self-synchronized
RFC6381 Codec Parameters: avc1.64001f
Average GOP length: 64 samples

Track # 2 Info - TrackID 2 - TimeScale 48000 - Media Duration 00:02:00.000
Track has 1 edit lists: track duration is 00:02:00.000
Media Info: Language "tha (tha)" - Type "soun:mp4a" - 5625 samples
MPEG-4 Config: Audio Stream - ObjectTypeIndication 0x40
MPEG-4 Audio AAC LC - 2 Channel(s) - SampleRate 48000
Synchronized on stream 1
RFC6381 Codec Parameters: mp4a.40.2
Alternate Group ID 1
All samples are sync

Track # 3 Info - TrackID 3 - TimeScale 48000 - Media Duration 00:02:00.000
Track has 1 edit lists: track duration is 00:02:00.000
Track is disabled
Media Info: Language "eng (eng)" - Type "soun:mp4a" - 5625 samples
MPEG-4 Config: Audio Stream - ObjectTypeIndication 0x40
MPEG-4 Audio AAC LC - 2 Channel(s) - SampleRate 48000
Synchronized on stream 1
RFC6381 Codec Parameters: mp4a.40.2
Alternate Group ID 1
All samples are sync

Track # 4 Info - TrackID 4 - TimeScale 1000 - Media Duration 00:01:59.651
Track has 1 edit lists: track duration is 00:01:59.651
Media Info: Language "tha (tha)" - Type "sbtl:tx3g" - 57 samples
Unknown Text Stream
Size 832 x 60 - Translation X=0 Y=0 - Layer 0
RFC6381 Codec Parameters: tx3g
Alternate Group ID 3
All samples are sync

Track # 5 Info - TrackID 5 - TimeScale 1000 - Media Duration 00:01:59.861
Track has 1 edit lists: track duration is 00:01:59.861
Track is disabled
Media Info: Language "eng (eng)" - Type "sbtl:tx3g" - 63 samples
Unknown Text Stream
Size 832 x 60 - Translation X=0 Y=0 - Layer 0
RFC6381 Codec Parameters: tx3g
Alternate Group ID 3
All samples are sync

Track # 6 Info - TrackID 6 - TimeScale 1000 - Media Duration 00:06:51.950
Track has 1 edit lists: track duration is 00:06:51.950
Track is disabled
Media Info: Language "und (und)" - Type "sbtl:tx3g" - 2 samples
Unknown Text Stream
Size 0 x 0 - Translation X=0 Y=0 - Layer 0
RFC6381 Codec Parameters: tx3g
Alternate Group ID 3
All samples are sync

Track # 7 Info - TrackID 7 - TimeScale 1000 - Media Duration 00:02:00.000
Track has 1 edit lists: track duration is 00:02:00.000
Track is disabled
Media Info: Language "und (und)" - Type "text:text" - 1 samples
Unknown Text Stream
Size 0 x 0 - Translation X=0 Y=0 - Layer 0
RFC6381 Codec Parameters: text
All samples are sync

mp4box command

$ MP4Box -dash 10000 -rap -profile dashavc264:onDemand -url-template out.mp4#trackID=1 out.mp4#trackID=2 out.mp4#trackID=3 out.mp4#trackID=4 out.mp4#trackID=5 out.mp4#trackID=6

mpd

$ vi out_dash.mpd
<?xml version="1.0"?>

<MPD xmlns="urn:mpeg:dash:schema:mpd:2011" minBufferTime="PT1.500S" type="static" mediaPresentationDuration="PT0H6M51.950S" maxSegmentDuration="PT0H0M10.000S" profiles="urn:mpeg:dash:profile:isoff-on-demand:2011,http://dashif.org/guidelines/dash264">
<ProgramInformation moreInformationURL="http://gpac.sourceforge.net">
<Title>out_dash.mpd generated by GPAC</Title>
</ProgramInformation>

<Period duration="PT0H6M51.950S">
<AdaptationSet segmentAlignment="true" maxWidth="832" maxHeight="480" maxFrameRate="60000/1001" par="832:480" lang="und" subsegmentAlignment="true" subsegmentStartsWithSAP="1">
<Representation id="1" mimeType="video/mp4" codecs="avc1.64001f" width="832" height="480" frameRate="60000/1001" sar="1:1" startWithSAP="1" bandwidth="737537">
<BaseURL>out_track1_dashinit.mp4</BaseURL>
<SegmentBase indexRangeExact="true" indexRange="970-1157">
<Initialization range="0-969"/>
</SegmentBase>
</Representation>
</AdaptationSet>
<AdaptationSet segmentAlignment="true" group="1" lang="tha" subsegmentAlignment="true" subsegmentStartsWithSAP="1">
<Representation id="2" mimeType="audio/mp4" codecs="mp4a.40.2" audioSamplingRate="48000" startWithSAP="1" bandwidth="161646">
<AudioChannelConfiguration schemeIdUri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"/>
<BaseURL>out_track2_dashinit.mp4</BaseURL>
<SegmentBase indexRangeExact="true" indexRange="903-1090">
<Initialization range="0-902"/>
</SegmentBase>
</Representation>
</AdaptationSet>
<AdaptationSet segmentAlignment="true" group="1" lang="eng" subsegmentAlignment="true" subsegmentStartsWithSAP="1">
<Representation id="3" mimeType="audio/mp4" codecs="mp4a.40.2" audioSamplingRate="48000" startWithSAP="1" bandwidth="161677">
<AudioChannelConfiguration schemeIdUri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"/>
<BaseURL>out_track3_dashinit.mp4</BaseURL>
<SegmentBase indexRangeExact="true" indexRange="903-1090">
<Initialization range="0-902"/>
</SegmentBase>
</Representation>
</AdaptationSet>
<AdaptationSet segmentAlignment="true" group="2" lang="tha" subsegmentAlignment="true" subsegmentStartsWithSAP="1">
<Representation id="4" mimeType="video/mp4" codecs="tx3g" startWithSAP="1" bandwidth="350">
<BaseURL>out_track4_dashinit.mp4</BaseURL>
<SegmentBase indexRangeExact="true" indexRange="891-1066">
<Initialization range="0-890"/>
</SegmentBase>
</Representation>
</AdaptationSet>
<AdaptationSet segmentAlignment="true" group="2" lang="eng" subsegmentAlignment="true" subsegmentStartsWithSAP="1">
<Representation id="5" mimeType="video/mp4" codecs="tx3g" startWithSAP="1" bandwidth="311">
<BaseURL>out_track5_dashinit.mp4</BaseURL>
<SegmentBase indexRangeExact="true" indexRange="891-1066">
<Initialization range="0-890"/>
</SegmentBase>
</Representation>
</AdaptationSet>
<AdaptationSet segmentAlignment="true" group="2" lang="und" subsegmentAlignment="true" subsegmentStartsWithSAP="1">
<Representation id="6" mimeType="video/mp4" codecs="tx3g" startWithSAP="1" bandwidth="121">
<BaseURL>out_track6_dashinit.mp4</BaseURL>
<SegmentBase indexRangeExact="true" indexRange="891-1426">
<Initialization range="0-890"/>
</SegmentBase>
</Representation>
</AdaptationSet>
</Period>
</MPD>

Discussion

Jean Le Feuvre - 2015-12-09

please use github for your questions.
I believe tx3g (apple & 3gpp timed text) is not supported by dash.js and/or underlying media engine in browser

If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
- huo - 2015-12-11
  
  hi jeanlf,
  
  i cannot create ticket.
  would you like to tell me the reason?
  thank you!
  
  If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
  - Romain Bouqueau - 2015-12-11
    
    Please use github to report issues: https://github.com/gpac/gpac
    
    Thank you!
    
    If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
    - huo - 2015-12-14
      
      Thank you very much!
      
      If you would like to refer to this comment somewhere else in this project, copy and paste the following link:

Jean Le Feuvre - 2015-12-09

status: open --> closed
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:

huo - 2015-12-10

thank you for your advice

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subtitle track cannot playback by dash.js

This project migrated to https://github.com/gpac/gpac/

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