Files
jellytau/docs/traceability.md
T
dtourolle c0c6c5023e
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fix(player): resume a transcoded video by seeking, not by asking for a stream that starts mid-item
A resumed transcode played nothing at all: every segment came back 400, hls.js
exhausted its retries and gave up, while the same episode from the beginning was
fine.

Jellyfin builds each segment URI by echoing the master playlist's query string
into it, and its segment handler opens by rejecting any request carrying
StartTimeTicks > 0 (ArgumentException → 400). So one resume position on the
playlist is copied onto every hls1/main/N.ts and 400s all of them — the `> 0`
being exactly why starting from the beginning survived.

HLS does not need the parameter: a playlist spans the whole item and asking for
segment N *is* the seek. It is removed from the URL builder entirely rather than
conditionalised — the builder cannot know whether its response will be
segmented — and the position becomes a seek issued once the player has loaded.
The progressive /Audio/universal builder behind the background-audio handoff has
no segments and keeps its StartTimeTicks, which is why audio-only handoffs
resumed correctly and video ones did not.

Completing that across the boundary, since the URL no longer starts where the
caller asked:

- reloadSource(url, position) now means "reload and resume AT this absolute
  position": it seeks the element once the source is playable and clears the
  transcode offset to zero. It previously set the offset to the position and
  seeked nothing, which was correct only while the URL itself began there —
  left in place it would have shown 20:00 on the scrubber while the opening
  titles played, with no seek ever happening.
- The transcoded resume path in the player page collapses into the same
  "seek after load" branch direct streams already used.
- VideoPlayer's background-audio return does the same: no base, seek to the
  absolute position.
- The stale test asserting StartTimeTicks is present is rewritten to keep its
  other half (an HLS master playlist, never a progressive stream.mp4, carrying
  the chosen source and audio track).

TRACES: UR-004, UR-005, UR-019, UR-021, UR-074 | DR-181 | UT-182, UT-183
2026-08-16 11:08:42 +02:00

364 KiB

Code Traceability Matrix

Generated: 8/16/2026, 11:08:26 AM

Summary

  • Total Files Scanned: 360
  • Total TRACES Found: 795
  • Requirements Covered:
    • User Requirements (UR): 71
    • Integration Requirements (IR): 19
    • Development Requirements (DR): 158
    • Jellyfin API Requirements (JA): 28

Requirements by Type

User Requirements (UR)

UR-002, UR-003, UR-004, UR-005, UR-007, UR-008, UR-009, UR-010, UR-011, UR-012, UR-013, UR-014, UR-015, UR-016, UR-017, UR-018, UR-019, UR-020, UR-021, UR-022, UR-023, UR-024, UR-025, UR-026, UR-027, UR-028, UR-029, UR-030, UR-031, UR-032, UR-033, UR-034, UR-035, UR-036, UR-038, UR-039, UR-040, UR-041, UR-042, UR-043, UR-044, UR-045, UR-046, UR-047, UR-048, UR-049, UR-050, UR-051, UR-052, UR-053, UR-054, UR-055, UR-056, UR-057, UR-058, UR-059, UR-060, UR-061, UR-062, UR-063, UR-064, UR-065, UR-066, UR-067, UR-068, UR-069, UR-071, UR-072, UR-073, UR-074, UR-075

Integration Requirements (IR)

IR-003, IR-004, IR-009, IR-010, IR-011, IR-012, IR-013, IR-014, IR-015, IR-016, IR-020, IR-021, IR-023, IR-025, IR-026, IR-027, IR-028, IR-030, IR-031

Development Requirements (DR)

DR-001, DR-002, DR-003, DR-004, DR-005, DR-006, DR-007, DR-009, DR-010, DR-011, DR-012, DR-013, DR-014, DR-015, DR-016, DR-017, DR-018, DR-020, DR-021, DR-022, DR-023, DR-024, DR-025, DR-026, DR-027, DR-028, DR-029, DR-030, DR-032, DR-033, DR-034, DR-035, DR-036, DR-037, DR-038, DR-039, DR-040, DR-041, DR-043, DR-044, DR-045, DR-047, DR-048, DR-049, DR-050, DR-051, DR-052, DR-053, DR-054, DR-055, DR-056, DR-057, DR-058, DR-059, DR-060, DR-061, DR-062, DR-063, DR-064, DR-065, DR-066, DR-067, DR-068, DR-069, DR-070, DR-074, DR-075, DR-076, DR-077, DR-078, DR-079, DR-080, DR-081, DR-082, DR-083, DR-084, DR-085, DR-086, DR-087, DR-088, DR-089, DR-090, DR-091, DR-092, DR-093, DR-095, DR-096, DR-097, DR-098, DR-099, DR-100, DR-101, DR-102, DR-103, DR-104, DR-105, DR-106, DR-107, DR-108, DR-109, DR-110, DR-111, DR-112, DR-113, DR-114, DR-115, DR-116, DR-117, DR-118, DR-119, DR-120, DR-123, DR-126, DR-127, DR-128, DR-129, DR-130, DR-131, DR-132, DR-133, DR-134, DR-135, DR-136, DR-137, DR-140, DR-141, DR-142, DR-143, DR-147, DR-148, DR-149, DR-150, DR-151, DR-152, DR-153, DR-154, DR-155, DR-156, DR-157, DR-158, DR-159, DR-160, DR-162, DR-167, DR-168, DR-169, DR-170, DR-171, DR-172, DR-173, DR-174, DR-175, DR-176, DR-177, DR-178, DR-179, DR-180, DR-181

Jellyfin API Requirements (JA)

JA-001, JA-002, JA-003, JA-004, JA-005, JA-007, JA-008, JA-010, JA-011, JA-012, JA-016, JA-017, JA-019, JA-020, JA-021, JA-022, JA-023, JA-024, JA-025, JA-026, JA-028, JA-029, JA-030, JA-031, JA-032, JA-033, JA-034, JA-035

Detailed Mapping

IR-003

Locations: 2 file(s)

IR-004

Locations: 1 file(s)

IR-009

Locations: 6 file(s)

IR-010

Locations: 2 file(s)

IR-011

Locations: 1 file(s)

IR-012

Locations: 2 file(s)

IR-013

Locations: 3 file(s)

IR-014

Locations: 6 file(s)

IR-015

Locations: 1 file(s)

IR-016

Locations: 16 file(s)

IR-020

Locations: 8 file(s)

IR-021

Locations: 1 file(s)

IR-023

Locations: 1 file(s)

IR-025

Locations: 2 file(s)

IR-026

Locations: 1 file(s)

IR-027

Locations: 1 file(s)

IR-028

Locations: 1 file(s)

IR-030

Locations: 2 file(s)

IR-031

Locations: 2 file(s)

DR-001

Locations: 17 file(s)

DR-002

Locations: 2 file(s)

DR-003

Locations: 2 file(s)

DR-004

Locations: 16 file(s)

DR-005

Locations: 13 file(s)

DR-006

Locations: 2 file(s)

DR-007

Locations: 9 file(s)

DR-009

Locations: 12 file(s)

DR-010

Locations: 1 file(s)

DR-011

Locations: 9 file(s)

DR-012

Locations: 7 file(s)

DR-013

Locations: 5 file(s)

DR-014

Locations: 4 file(s)

DR-015

Locations: 6 file(s)

DR-016

Locations: 3 file(s)

DR-017

Locations: 3 file(s)

DR-018

Locations: 1 file(s)

DR-020

Locations: 8 file(s)

DR-021

Locations: 3 file(s)

DR-022

Locations: 1 file(s)

DR-023

Locations: 12 file(s)

DR-024

Locations: 8 file(s)

DR-025

Locations: 1 file(s)

DR-026

Locations: 2 file(s)

DR-027

Locations: 2 file(s)

DR-028

Locations: 20 file(s)

DR-029

Locations: 10 file(s)

DR-030

Locations: 18 file(s)

DR-032

Locations: 1 file(s)

DR-033

Locations: 2 file(s)

DR-034

Locations: 2 file(s)

DR-035

Locations: 7 file(s)

DR-036

Locations: 12 file(s)

DR-037

Locations: 12 file(s)

DR-038

Locations: 9 file(s)

DR-039

Locations: 8 file(s)

DR-040

Locations: 3 file(s)

DR-041

Locations: 2 file(s)

DR-043

Locations: 1 file(s)

DR-044

Locations: 1 file(s)

DR-045

Locations: 1 file(s)

DR-047

Locations: 15 file(s)

DR-048

Locations: 6 file(s)

DR-049

Locations: 1 file(s)

DR-050

Locations: 1 file(s)

DR-051

Locations: 3 file(s)

DR-052

Locations: 20 file(s)

DR-053

Locations: 1 file(s)

DR-054

Locations: 1 file(s)

DR-055

Locations: 2 file(s)

DR-056

Locations: 1 file(s)

DR-057

Locations: 1 file(s)

DR-058

Locations: 1 file(s)

DR-059

Locations: 2 file(s)

DR-060

Locations: 1 file(s)

DR-061

Locations: 2 file(s)

DR-062

Locations: 6 file(s)

DR-063

Locations: 17 file(s)

DR-064

Locations: 5 file(s)

DR-065

Locations: 2 file(s)

DR-066

Locations: 5 file(s)

DR-067

Locations: 3 file(s)

DR-068

Locations: 1 file(s)

DR-069

Locations: 1 file(s)

DR-070

Locations: 1 file(s)

DR-074

Locations: 17 file(s)

DR-075

Locations: 1 file(s)

DR-076

Locations: 2 file(s)

DR-077

Locations: 2 file(s)

DR-078

Locations: 7 file(s)

DR-079

Locations: 2 file(s)

DR-080

Locations: 2 file(s)

DR-081

Locations: 2 file(s)

DR-082

Locations: 21 file(s)

DR-083

Locations: 19 file(s)

DR-084

Locations: 2 file(s)

DR-085

Locations: 15 file(s)

DR-086

Locations: 1 file(s)

DR-087

Locations: 3 file(s)

DR-088

Locations: 2 file(s)

DR-089

Locations: 4 file(s)

DR-090

Locations: 1 file(s)

DR-091

Locations: 2 file(s)

DR-092

Locations: 2 file(s)

DR-093

Locations: 4 file(s)

DR-095

Locations: 1 file(s)

DR-096

Locations: 1 file(s)

DR-097

Locations: 9 file(s)

DR-098

Locations: 4 file(s)

DR-099

Locations: 2 file(s)

DR-100

Locations: 2 file(s)

DR-101

Locations: 8 file(s)

DR-102

Locations: 7 file(s)

DR-103

Locations: 6 file(s)

DR-104

Locations: 1 file(s)

DR-105

Locations: 10 file(s)

DR-106

Locations: 7 file(s)

DR-107

Locations: 2 file(s)

DR-108

Locations: 5 file(s)

DR-109

Locations: 6 file(s)

DR-110

Locations: 8 file(s)

DR-111

Locations: 5 file(s)

DR-112

Locations: 6 file(s)

DR-113

Locations: 4 file(s)

DR-114

Locations: 2 file(s)

DR-115

Locations: 16 file(s)

DR-116

Locations: 11 file(s)

DR-117

Locations: 8 file(s)

DR-118

Locations: 5 file(s)

DR-119

Locations: 15 file(s)

DR-120

Locations: 19 file(s)

DR-123

Locations: 8 file(s)

DR-126

Locations: 2 file(s)

DR-127

Locations: 6 file(s)

DR-128

Locations: 3 file(s)

DR-129

Locations: 8 file(s)

DR-130

Locations: 7 file(s)

DR-131

Locations: 16 file(s)

DR-132

Locations: 12 file(s)

DR-133

Locations: 2 file(s)

DR-134

Locations: 1 file(s)

DR-135

Locations: 5 file(s)

DR-136

Locations: 3 file(s)

DR-137

Locations: 17 file(s)

DR-140

Locations: 3 file(s)

DR-141

Locations: 2 file(s)

DR-142

Locations: 11 file(s)

DR-143

Locations: 11 file(s)

DR-147

Locations: 5 file(s)

DR-148

Locations: 1 file(s)

DR-149

Locations: 3 file(s)

DR-150

Locations: 4 file(s)

DR-151

Locations: 1 file(s)

DR-152

Locations: 2 file(s)

DR-153

Locations: 1 file(s)

DR-154

Locations: 7 file(s)

DR-155

Locations: 5 file(s)

DR-156

Locations: 2 file(s)

DR-157

Locations: 1 file(s)

DR-158

Locations: 6 file(s)

DR-159

Locations: 3 file(s)

DR-160

Locations: 1 file(s)

DR-162

Locations: 39 file(s)

DR-167

Locations: 2 file(s)

DR-168

Locations: 6 file(s)

DR-169

Locations: 2 file(s)

DR-170

Locations: 2 file(s)

DR-171

Locations: 9 file(s)

DR-172

Locations: 1 file(s)

DR-173

Locations: 17 file(s)

DR-174

Locations: 8 file(s)

DR-175

Locations: 9 file(s)

DR-176

Locations: 17 file(s)

DR-177

Locations: 9 file(s)

DR-178

Locations: 13 file(s)

DR-179

Locations: 15 file(s)

DR-180

Locations: 6 file(s)

DR-181

Locations: 11 file(s)

JA-001

Locations: 1 file(s)

JA-002

Locations: 2 file(s)

JA-003

Locations: 1 file(s)

JA-004

Locations: 3 file(s)

JA-005

Locations: 1 file(s)

JA-007

Locations: 1 file(s)

JA-008

Locations: 8 file(s)

JA-010

Locations: 2 file(s)

JA-011

Locations: 2 file(s)

JA-012

Locations: 2 file(s)

JA-016

Locations: 1 file(s)

JA-017

Locations: 1 file(s)

JA-019

Locations: 1 file(s)

JA-020

Locations: 1 file(s)

JA-021

Locations: 6 file(s)

JA-022

Locations: 3 file(s)

JA-023

Locations: 3 file(s)

JA-024

Locations: 2 file(s)

JA-025

Locations: 4 file(s)

JA-026

Locations: 3 file(s)

JA-028

Locations: 1 file(s)

JA-029

Locations: 3 file(s)

JA-030

Locations: 2 file(s)

JA-031

Locations: 2 file(s)

JA-032

Locations: 10 file(s)

JA-033

Locations: 7 file(s)

JA-034

Locations: 3 file(s)

JA-035

Locations: 2 file(s)

UR-004

Locations: 51 file(s)

UR-005

Locations: 99 file(s)

UR-007

Locations: 16 file(s)

UR-013

Locations: 2 file(s)

UR-014

Locations: 1 file(s)

UR-019

Locations: 13 file(s)

UR-021

Locations: 6 file(s)

UR-023

Locations: 24 file(s)

UR-024

Locations: 2 file(s)

UR-025

Locations: 69 file(s)

UR-027

Locations: 23 file(s)

UR-029

Locations: 5 file(s)

UR-034

Locations: 10 file(s)

UR-035

Locations: 5 file(s)

UR-038

Locations: 1 file(s)

UR-040

Locations: 59 file(s)

UR-043

Locations: 2 file(s)

UR-048

Locations: 6 file(s)

UR-049

Locations: 22 file(s)

UR-052

Locations: 23 file(s)

UR-055

Locations: 54 file(s)

UR-056

Locations: 17 file(s)

UR-057

Locations: 1 file(s)

UR-058

Locations: 11 file(s)

UR-059

Locations: 6 file(s)

UR-062

Locations: 17 file(s)

UR-063

Locations: 10 file(s)

UR-066

Locations: 7 file(s)

UR-067

Locations: 41 file(s)

UR-068

Locations: 14 file(s)

IT-003

Locations: 1 file(s)

IT-004

Locations: 1 file(s)

IT-013

Locations: 4 file(s)

IT-016

Locations: 1 file(s)

IT-017

Locations: 1 file(s)

UT-003

Locations: 1 file(s)

UT-004

Locations: 1 file(s)

UT-005

Locations: 1 file(s)

UT-010

Locations: 1 file(s)

UT-012

Locations: 1 file(s)

UT-014

Locations: 2 file(s)

UT-015

Locations: 2 file(s)

UT-016

Locations: 2 file(s)

UT-017

Locations: 2 file(s)

UT-018

Locations: 2 file(s)

UT-019

Locations: 2 file(s)

UT-020

Locations: 2 file(s)

UT-021

Locations: 2 file(s)

UT-022

Locations: 2 file(s)

UT-023

Locations: 2 file(s)

UT-024

Locations: 1 file(s)

UT-025

Locations: 2 file(s)

UT-051

Locations: 1 file(s)

UT-052

Locations: 1 file(s)

UT-059

Locations: 3 file(s)

UT-060

Locations: 3 file(s)

UT-061

Locations: 9 file(s)

UT-062

Locations: 1 file(s)

UT-066

Locations: 1 file(s)

UT-067

Locations: 1 file(s)

UT-071

Locations: 1 file(s)

UT-072

Locations: 1 file(s)

UT-073

Locations: 1 file(s)

UT-074

Locations: 1 file(s)

UT-075

Locations: 1 file(s)

UT-076

Locations: 1 file(s)

UT-077

Locations: 1 file(s)

UT-078

Locations: 1 file(s)

UT-079

Locations: 1 file(s)

UT-080

Locations: 1 file(s)

UT-081

Locations: 1 file(s)

UT-082

Locations: 1 file(s)

UT-089

Locations: 1 file(s)

UT-090

Locations: 1 file(s)

UT-091

Locations: 2 file(s)

UT-092

Locations: 3 file(s)

UT-093

Locations: 2 file(s)

UT-094

Locations: 1 file(s)

UT-095

Locations: 1 file(s)

UT-096

Locations: 1 file(s)

UT-097

Locations: 1 file(s)

UT-098

Locations: 1 file(s)

UT-099

Locations: 3 file(s)

UT-100

Locations: 6 file(s)

UT-101

Locations: 4 file(s)

UT-102

Locations: 2 file(s)

UT-103

Locations: 6 file(s)

UT-105

Locations: 3 file(s)

UT-106

Locations: 3 file(s)

UR-002

Locations: 21 file(s)

UR-003

Locations: 29 file(s)

UR-016

Locations: 2 file(s)

UR-018

Locations: 20 file(s)

UR-026

Locations: 19 file(s)

UR-041

Locations: 2 file(s)

UR-060

Locations: 7 file(s)

UR-069

Locations: 24 file(s)

UR-071

Locations: 63 file(s)

UR-072

Locations: 1 file(s)

UR-074

Locations: 48 file(s)

UR-075

Locations: 12 file(s)

UT-026

Locations: 2 file(s)

UT-027

Locations: 1 file(s)

UT-028

Locations: 1 file(s)

UT-029

Locations: 1 file(s)

UT-030

Locations: 1 file(s)

UT-031

Locations: 1 file(s)

UT-032

Locations: 1 file(s)

UT-033

Locations: 1 file(s)

UT-042

Locations: 1 file(s)

UT-043

Locations: 1 file(s)

UT-044

Locations: 1 file(s)

UT-083

Locations: 1 file(s)

UT-084

Locations: 1 file(s)

UT-104

Locations: 7 file(s)

UT-107

Locations: 6 file(s)

UT-108

Locations: 2 file(s)

UT-109

Locations: 1 file(s)

UT-110

Locations: 1 file(s)

UT-111

Locations: 3 file(s)

UT-112

Locations: 2 file(s)

UT-113

Locations: 2 file(s)

UT-114

Locations: 2 file(s)

UT-115

Locations: 2 file(s)

UT-116

Locations: 4 file(s)

UT-117

Locations: 7 file(s)

UR-009

Locations: 15 file(s)

UR-020

Locations: 41 file(s)

UR-050

Locations: 9 file(s)

UR-064

Locations: 7 file(s)

UR-073

Locations: 6 file(s)

UT-085

Locations: 2 file(s)

UT-118

Locations: 1 file(s)

UT-119

Locations: 2 file(s)

UT-120

Locations: 2 file(s)

UT-121

Locations: 2 file(s)

UT-122

Locations: 11 file(s)

UT-123

Locations: 2 file(s)

UT-124

Locations: 1 file(s)

UT-125

Locations: 3 file(s)

UT-126

Locations: 2 file(s)

UT-127

Locations: 11 file(s)

UT-130

Locations: 3 file(s)

UT-131

Locations: 1 file(s)

UT-132

Locations: 1 file(s)

UT-133

Locations: 1 file(s)

UT-134

Locations: 1 file(s)

UT-135

Locations: 1 file(s)

UT-136

Locations: 1 file(s)

UT-137

Locations: 1 file(s)

UT-138

Locations: 1 file(s)

UT-139

Locations: 1 file(s)

UT-140

Locations: 1 file(s)

UT-141

Locations: 2 file(s)

UT-142

Locations: 1 file(s)

UT-143

Locations: 3 file(s)

UT-144

Locations: 3 file(s)

UT-145

Locations: 5 file(s)

UT-146

Locations: 3 file(s)

UT-147

Locations: 8 file(s)

UT-148

Locations: 3 file(s)

UT-149

Locations: 2 file(s)

UT-150

Locations: 1 file(s)

UT-152

Locations: 4 file(s)

UT-154

Locations: 2 file(s)

UT-155

Locations: 3 file(s)

UT-156

Locations: 4 file(s)

UT-157

Locations: 3 file(s)

UT-158

Locations: 1 file(s)

UT-159

Locations: 1 file(s)

UT-160

Locations: 1 file(s)

UT-161

Locations: 4 file(s)

UT-162

Locations: 1 file(s)

UT-163

Locations: 1 file(s)

UT-164

Locations: 1 file(s)

UT-166

Locations: 7 file(s)

UT-167

Locations: 1 file(s)

UT-170

Locations: 8 file(s)

UR-053

Locations: 17 file(s)

UT-151

Locations: 7 file(s)

UT-168

Locations: 17 file(s)

UT-171

Locations: 2 file(s)

UT-172

Locations: 3 file(s)

UT-173

Locations: 5 file(s)

UT-174

Locations: 2 file(s)

UT-175

Locations: 1 file(s)

UT-176

Locations: 3 file(s)

UT-177

Locations: 6 file(s)

UT-178

Locations: 3 file(s)

UT-179

Locations: 4 file(s)

UT-180

Locations: 3 file(s)

UT-181

Locations: 6 file(s)

UT-182

Locations: 5 file(s)

UR-008

Locations: 2 file(s)

UR-010

Locations: 16 file(s)

UR-011

Locations: 11 file(s)

UR-012

Locations: 9 file(s)

UR-015

Locations: 13 file(s)

UR-017

Locations: 10 file(s)

UR-028

Locations: 2 file(s)

UR-030

Locations: 2 file(s)

UR-036

Locations: 3 file(s)

UR-039

Locations: 1 file(s)

UR-051

Locations: 2 file(s)

UR-054

Locations: 7 file(s)

UR-061

Locations: 4 file(s)

UT-086

Locations: 2 file(s)

UT-087

Locations: 2 file(s)

UT-088

Locations: 1 file(s)

UT-183

Locations: 2 file(s)

UR-022

Locations: 1 file(s)

UR-031

Locations: 2 file(s)

UR-032

Locations: 7 file(s)

UR-033

Locations: 12 file(s)

UR-042

Locations: 1 file(s)

UR-044

Locations: 1 file(s)

UR-045

Locations: 1 file(s)

UR-046

Locations: 1 file(s)

UR-047

Locations: 1 file(s)

UR-065

Locations: 22 file(s)