1670827 - Add AVIF telemetry probes

Status: RESOLVED FIXED

(Core :: Graphics: ImageLib, task, P1)

Description

[C.M.Chang[:chunmin]]

Some telemetry probes for AVIF images should be tracked:

• time to decode and which decoder was used (dav1d vs libaom)
• successful decodes, decode errors
• parse errors
• bitdepth
• color space

---

It's better to record the following items as well, but it can be done in another bug:

• image size (both in bytes and frame dimensions)
• chroma subsampling
• top-level domain source of the image

Comment 1

[C.M.Chang[:chunmin]]

Attachment: Bug 1670827 - P1: Telemetry tracking decode results

Add a scalar tracking the decode requests for AVIF images. The count can
be viewed on about:telemetry#scalars-tab page locally, if
image.avif.enabled is true in about:config page.

Comment 2

[C.M.Chang[:chunmin]]

Attachment: Bug 1670827 - P2: Telemetry tracking which decoder is

Add a telemetry probe tracking times of the decoders (dav1d vs libaom)
used to decode AVIF

Comment 3

[C.M.Chang[:chunmin]]

Attachment: Bug 1670827 - P3: Telemetry tracking YUV color space

Add telemetry probes tracking the usages of YUV color space of AVIF.

Depends on D93291

Comment 4

[C.M.Chang[:chunmin]]

Attachment: Bug 1670827 - P4: Telemetry tracking bit-depth

Add a telemetry probe tracking the bit-per-pixel of the AVIF images

Depends on D93708

Comment 5

[C.M.Chang[:chunmin]]

Attachment: data_review.md

The form is copied from [1], according to [2].

[1] https://github.com/mozilla/data-review/blob/0389ed1253dae4e94b7100b6eb90d0adfa3bf448/request.md
[2] https://wiki.mozilla.org/Firefox/Data_Collection#Step_1:_Submit_Request

Comment 6

[C.M.Chang[:chunmin]]

Attachment: data_review.md

The form is copied from [1], according to [2].

[1] https://github.com/mozilla/data-review/blob/0389ed1253dae4e94b7100b6eb90d0adfa3bf448/request.md
[2] https://wiki.mozilla.org/Firefox/Data_Collection#Step_1:_Submit_Request

Comment 7

[C.M.Chang[:chunmin]]

Attachment: Bug 1670827 - P5: Telemetry tracking decoder errors

Add a telemetry probe tracking the errors in dav1d or aom decoder

Depends on D93867

Comment 8

[C.M.Chang[:chunmin]]

Attachment: data_review.md

Update names for the telemetry probes

Comment 9

[Chris H-C :chutten]

Comment on attachment 9184408 [details]
data_review.md

DATA COLLECTION REVIEW RESPONSE:

Is there or will there be documentation that describes the schema for the ultimate data set available publicly, complete and accurate?

Yes.

Is there a control mechanism that allows the user to turn the data collection on and off?

Yes. This collection is Telemetry so can be controlled through Firefox's Preferences.

If the request is for permanent data collection, is there someone who will monitor the data over time?

Yes, Chun-Min Chang and Jon Bauman are responsible.

Using the category system of data types on the Mozilla wiki, what collection type of data do the requested measurements fall under?

Category 1, Technical.

Is the data collection request for default-on or default-off?

Default on for pre-release channels only.

Does the instrumentation include the addition of any new identifiers?

No.

Is the data collection covered by the existing Firefox privacy notice?

Yes.

Does there need to be a check-in in the future to determine whether to renew the data?

No. This collection is permanent.

---

Result: datareview+

Comment 10

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/d318f89d76dd
P1: Telemetry tracking decode results r=jbauman
https://hg.mozilla.org/integration/autoland/rev/715399f79a37
P2: Telemetry tracking which decoder is r=jbauman
https://hg.mozilla.org/integration/autoland/rev/fa7571ec7e84
P3: Telemetry tracking YUV color space r=jbauman
https://hg.mozilla.org/integration/autoland/rev/e81cbda01568
P4: Telemetry tracking bit-depth r=jbauman
https://hg.mozilla.org/integration/autoland/rev/233c5633df7e
P5: Telemetry tracking decoder errors r=jbauman

Comment 11

[Andreea Pavel [:apavel]]

https://hg.mozilla.org/mozilla-central/rev/d318f89d76dd
https://hg.mozilla.org/mozilla-central/rev/715399f79a37
https://hg.mozilla.org/mozilla-central/rev/fa7571ec7e84
https://hg.mozilla.org/mozilla-central/rev/e81cbda01568
https://hg.mozilla.org/mozilla-central/rev/233c5633df7e