Dolby <AudioChannelConfiguration value="F800"> results in an exception #688

dimitar71 · 2023-09-30T06:55:14Z

Version

Media3 1.1.1

More version details

All Exoplayer 2.18.7+ versions have this problem.

Devices that reproduce the issue

Chromecast
Nvidia Shield
Sony TV with Android TV
majority of Android TV-related boxes

Devices that do not reproduce the issue

Mobile-related devices, e.g. Pixel phones

Reproducible in the demo app?

Not tested

Reproduction steps

Find a schemeIdUri="tag:dolby.com,2014:dash:audio_channel_configuration:2011" manifest which value is not one of the supported ones in DashManifestParser.parseDolbyChannelConfiguration():

"4000" - 1 audio channel
"a000" - 2 audio channels
"f801" - 6 audio channels
"fa01" - 8 audio channels

For example value="F800" in:
<AudioChannelConfiguration schemeIdUri="tag:dolby.com,2014:dash:audio_channel_configuration:2011" value="F800"></AudioChannelConfiguration>

Expected result

A good approach would be parsing and returning a valid number, not Format.NO_VALUE.

Actual result

This results in a 100% reproducible IllegalArgumentException from within Exoplayer.

This may need to be parsed properly, and return a safe audio channels value by default, e.g. 2.
Also, it is a good idea to be properly documented in the Exoplayer documentation/references.

For us, F800 defines 5-channel audio.

Based on https://ott.dolby.com/OnDelKits/DDP/Dolby_Digital_Plus_Online_Delivery_Kit_v1.5/Documentation/Content_Creation/SDM/help_files/topics/ddp_mpeg_dash_c_mpd_auchlconfig.html, Alternative AudioChannelConfiguration scheme section:

The value element is a four-digit hexadecimal representation of the 16-bit bit field, which describes the channel assignment of the referenced Dolby Digital Plus bitstream according to the table. Bit 0, which indicates the presence of the L channel, is the most-significant bit of the AudioChannelConfiguration descriptor.

This means any value, not just above 4 would be valid.

Also, in DashManifestParser.parseDolbyChannelConfiguration(), the coverage is 1, 2, 6 and 8 audio channels.
It does not cover 5 and 7 audio channels for example.

One option would be checking range of values rather one value per channel configuration.

Media

<?xml version="1.0" encoding="UTF-8"?>
<MPD xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" xmlns:cenc="urn:mpeg:cenc:2013" type="dynamic" availabilityStartTime="1970-01-01T00:00:00Z" publishTime="2023-09-30T06:30:19Z" minimumUpdatePeriod="PT2S" minBufferTime="PT2S" timeShiftBufferDepth="PT21600S">
<Period id="id_PT1695835287S" start="PT1695835287.000S">
  <AdaptationSet id="0" mimeType="video/mp4" contentType="video" segmentAlignment="true" startWithSAP="1">
  <ContentProtection schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc" cenc:default_KID="1419d680-1dd2-11b2-8054-024152444953"/>
  <ContentProtection value="Widevine" schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed">
  <cenc:pssh>AAAAOHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABgSEBQZ1oAd0hGygFQCQVJESVNI49yVmwY=</cenc:pssh>
  </ContentProtection>
    <SegmentTemplate presentationTimeOffset="16958352870000555" timescale="10000000" initialization="h_0803afc9add619e106d0f7ace2467f0ae1_$RepresentationID$_$Bandwidth$_t16958352870000555_init.mp4?device_profile=dash_cenc_verimatrix%26seg_size=2" media="h_0803afc9add619e106d0f7ace2467f0ae1_$RepresentationID$_$Bandwidth$_t$Time$.mp4?device_profile=dash_cenc_verimatrix%26seg_size=2">
      <SegmentTimeline>
        <S d="20020000" t="16960535977927555" r="899"/>
      </SegmentTimeline>
    </SegmentTemplate>
    <Representation id="video_0" bandwidth="5240000" width="1280" height="720" codecs="avc1.640020" scanType="progressive"></Representation>
    <Representation id="video_1" bandwidth="2880000" width="960" height="540" codecs="avc1.64001F" scanType="progressive"></Representation>
    <Representation id="video_2" bandwidth="2060000" width="854" height="480" codecs="avc1.4D401F" scanType="progressive"></Representation>
    <Representation id="video_3" bandwidth="1400000" width="640" height="360" codecs="avc1.4D401E" scanType="progressive"></Representation>
    <Representation id="video_4" bandwidth="980000" width="480" height="270" codecs="avc1.42E015" scanType="progressive"></Representation>
    <Representation id="video_5" bandwidth="580000" width="320" height="180" codecs="avc1.42E00D" scanType="progressive"></Representation>
    <Representation id="video_6" bandwidth="3700000" width="1280" height="720" codecs="avc1.64001F" scanType="progressive"></Representation>
  </AdaptationSet>
  <AdaptationSet id="1" mimeType="audio/mp4" contentType="audio" lang="en" segmentAlignment="true" startWithSAP="1">
    <AudioChannelConfiguration schemeIdUri="tag:dolby.com,2014:dash:audio_channel_configuration:2011" value="F800"></AudioChannelConfiguration>
  <ContentProtection schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc" cenc:default_KID="1419d680-1dd2-11b2-8054-024152444953"/>
  <ContentProtection value="Widevine" schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed">
  <cenc:pssh>AAAAOHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABgSEBQZ1oAd0hGygFQCQVJESVNI49yVmwY=</cenc:pssh>
  </ContentProtection>
    <SegmentTemplate presentationTimeOffset="16958352870000555" timescale="10000000" initialization="h_0803afc9add619e106d0f7ace2467f0ae1_$RepresentationID$_$Bandwidth$_t16958352870000555_init.mp4?device_profile=dash_cenc_verimatrix%26seg_size=2" media="h_0803afc9add619e106d0f7ace2467f0ae1_$RepresentationID$_$Bandwidth$_t$Time$.mp4?device_profile=dash_cenc_verimatrix%26seg_size=2">
      <SegmentTimeline>
        <S d="22400000" t="16960535979733777" r="1"/>
        <S d="15680000" t="16960553901973777"/>
        <S d="22400000" t="16960553917653777" r="1"/>
        <S d="15680000" t="16960553962453777"/>
        <S d="22400000" t="16960553978133777"/>
      </SegmentTimeline>
    </SegmentTemplate>
    <Representation id="audio1299_0" bandwidth="400000" codecs="ac-3" audioSamplingRate="48000"></Representation>
  </AdaptationSet>
  <AdaptationSet id="2" mimeType="audio/mp4" contentType="audio" lang="en" segmentAlignment="true" startWithSAP="1">
    <AudioChannelConfiguration schemeIdUri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"></AudioChannelConfiguration>
  <ContentProtection schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc" cenc:default_KID="1419d680-1dd2-11b2-8054-024152444953"/>
  <ContentProtection value="Widevine" schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed">
  <cenc:pssh>AAAAOHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABgSEBQZ1oAd0hGygFQCQVJESVNI49yVmwY=</cenc:pssh>
  </ContentProtection>
    <SegmentTemplate presentationTimeOffset="16958352870000555" timescale="10000000" initialization="h_0803afc9add619e106d0f7ace2467f0ae1_$RepresentationID$_$Bandwidth$_t16958352870000555_init.mp4?device_profile=dash_cenc_verimatrix%26seg_size=2" media="h_0803afc9add619e106d0f7ace2467f0ae1_$RepresentationID$_$Bandwidth$_t$Time$.mp4?device_profile=dash_cenc_verimatrix%26seg_size=2">
      <SegmentTimeline>
        <S d="23466666" t="16960535978227111"/>
        <S d="11733333" t="16960553784627111"/>
        <S d="23466667" t="16960553796360444"/>
        <S d="23466666" t="16960553819827111"/>
        <S d="14080000" t="16960553843293777"/>
        <S d="23466667" t="16960553857373777" r="1"/>
        <S d="11733333" t="16960553904307111"/>
        <S d="23466667" t="16960553916040444"/>
        <S d="23466666" t="16960553939507111"/>
        <S d="14080000" t="16960553962973777"/>
        <S d="23466667" t="16960553977053777"/>
      </SegmentTimeline>
    </SegmentTemplate>
    <Representation id="audio1300_0" bandwidth="100000" codecs="mp4a.40.2" audioSamplingRate="48000"></Representation>
  </AdaptationSet>
  <AdaptationSet id="3" mimeType="video/mp4" contentType="video" segmentAlignment="true" startWithSAP="1">
   <EssentialProperty schemeIdUri="http://dashif.org/guidelines/trickmode" value="0" />
    <SegmentTemplate presentationTimeOffset="16958352870000555" timescale="10000000" initialization="h_0803afc9add619e106d0f7ace2467f0ae1_$RepresentationID$_$Bandwidth$_t16958352870000555_init.mp4?device_profile=dash_cenc_verimatrix%26seg_size=2" media="h_0803afc9add619e106d0f7ace2467f0ae1_$RepresentationID$_$Bandwidth$_t$Time$.mp4?device_profile=dash_cenc_verimatrix%26seg_size=2">
      <SegmentTimeline>
        <S d="20020000" t="16960535977927555" r="899"/>
      </SegmentTimeline>
    </SegmentTemplate>
    <Representation id="trk_0" bandwidth="753000" maxPlayoutRate="16" codingDependency="false" width="1280" height="720" codecs="avc1.64001F" frameRate="19/30" scanType="progressive"></Representation>
  </AdaptationSet>
</Period>
<UTCTiming schemeIdUri="urn:mpeg:dash:utc:direct:2014" value="2023-09-30T06:29:57Z"/>
</MPD>

Bug Report

You will email the zip file produced by adb bugreport to android-media-github@google.com after filing this issue.

The text was updated successfully, but these errors were encountered:

SerkanKUL · 2023-09-30T23:23:38Z

I am experiencing the same problem. In which files do I need to make code changes?

dimitar71 · 2023-10-02T21:24:07Z

please look at DashManifestParser.parseDolbyChannelConfiguration()
you can override DashManifestParser.parseAudioChannelConfiguration()
and call your own method with more values for the specific case "urn:dolby:dash:audio_channel_configuration:2011".

However, I still think Exoplayer sets very stiff boundaries for audio channels in its current implementation.

tianyif · 2023-10-11T16:25:00Z

Hi @dimitar71,

Thanks for reporting! Could you please provide the full details of the sample media which will help me to test the change? The pasted one is an encrypted stream, and I think we'd need a drm license uri to test it.

If you're unable to share test content publicly, please send them to dev.exoplayer@gmail.com using a subject in the format "Issue #688". Please also update this issue to indicate you’ve done this.

tianyif · 2023-10-12T11:51:39Z

Correction to the email, the one above is a legacy one: please send the test content to android-media-github@google.com using a subject in the format "Issue #688".

SerkanKUL · 2023-10-13T08:55:26Z

issues/688 I sent an email no. On most phones, ac3 and eac3 do not produce sound. Video plays but no sound

tianyif · 2023-10-16T10:36:23Z

Hi @radyoof,

Not sure if I understood your last comment correctly. So you said you sent an email? But I didn't find anything related in our email box.

dimitar71 · 2023-10-16T15:33:31Z

@tianyif
We are still trying to get that details. Will let you know soon.

@radyoof
I am not sure what issue you are referring.
Seems is different, and this moves the focus away from this specific problem.

lsalvalaggio · 2023-10-24T01:30:12Z

@tianyif -- please use this URL for testing the issue with Dolby Audio configuration representing the F800 scenario:

--Update - on second thought not going to share that publicly as it's in the clear. Will send to suggested email with desired subject line.

Issue: #688 PiperOrigin-RevId: 581908905

Issue: androidx/media#688 PiperOrigin-RevId: 581908905

tianyif · 2023-11-13T12:55:30Z

Thanks @lsalvalaggio for the test media. The change is pushed :)

Issue: #688 PiperOrigin-RevId: 581908905 (cherry picked from commit 79711eb)

dimitar71 added bug needs triage labels Sep 30, 2023

tianyif self-assigned this Oct 11, 2023

tianyif added need more info and removed needs triage labels Oct 16, 2023

google-oss-bot added needs triage and removed need more info labels Oct 16, 2023

copybara-service bot pushed a commit that referenced this issue Nov 13, 2023

Parse "f800" as channel count of 5 for Dolby in DASH manifest

79711eb

Issue: #688 PiperOrigin-RevId: 581908905

copybara-service bot pushed a commit to google/ExoPlayer that referenced this issue Nov 13, 2023

Parse "f800" as channel count of 5 for Dolby in DASH manifest

35043cc

Issue: androidx/media#688 PiperOrigin-RevId: 581908905

tianyif closed this as completed Nov 13, 2023

microkatz pushed a commit that referenced this issue Jan 11, 2024

Parse "f800" as channel count of 5 for Dolby in DASH manifest

21461ab

Issue: #688 PiperOrigin-RevId: 581908905 (cherry picked from commit 79711eb)

androidx locked and limited conversation to collaborators Jan 13, 2024

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Dolby <AudioChannelConfiguration value="F800"> results in an exception #688

Dolby <AudioChannelConfiguration value="F800"> results in an exception #688

dimitar71 commented Sep 30, 2023 •

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SerkanKUL commented Sep 30, 2023

dimitar71 commented Oct 2, 2023 •

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tianyif commented Oct 11, 2023

tianyif commented Oct 12, 2023

SerkanKUL commented Oct 13, 2023

tianyif commented Oct 16, 2023

dimitar71 commented Oct 16, 2023 •

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lsalvalaggio commented Oct 24, 2023 •

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tianyif commented Nov 13, 2023 •

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Dolby <AudioChannelConfiguration value="F800"> results in an exception #688

Dolby <AudioChannelConfiguration value="F800"> results in an exception #688

Comments

dimitar71 commented Sep 30, 2023 • edited Loading

Version

More version details

Devices that reproduce the issue

Devices that do not reproduce the issue

Reproducible in the demo app?

Reproduction steps

Expected result

Actual result

Media

Bug Report

SerkanKUL commented Sep 30, 2023

dimitar71 commented Oct 2, 2023 • edited Loading

tianyif commented Oct 11, 2023

tianyif commented Oct 12, 2023

SerkanKUL commented Oct 13, 2023

tianyif commented Oct 16, 2023

dimitar71 commented Oct 16, 2023 • edited Loading

lsalvalaggio commented Oct 24, 2023 • edited Loading

tianyif commented Nov 13, 2023 • edited Loading

dimitar71 commented Sep 30, 2023 •

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dimitar71 commented Oct 2, 2023 •

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dimitar71 commented Oct 16, 2023 •

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lsalvalaggio commented Oct 24, 2023 •

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tianyif commented Nov 13, 2023 •

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