HLS VoD fMP4 Choppy Video Start #4516
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component: HLS
The issue involves Apple's HLS manifest format
priority: P1
Big impact or workaround impractical; resolve before feature release
status: archived
Archived and locked; will not be updated
type: bug
Something isn't working correctly
Milestone
Comments
|
I've noticed something similar with our demo HLS assets. |
I can narrow it down to between v4.0.0 and v4.0.1. |
nyanmisaka
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this avoids the choppy video start on HLS fMP4 playback. Closes shaka-project#4516
joeyparrish
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priority: P1
theodab
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Clearing the buffer seems to be not enough for this case. This avoids the choppy video start on HLS fMP4 playback. Tested with Chrome 106 & Edge 106. Closes #4516
joeyparrish
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Oct 7, 2022
Clearing the buffer seems to be not enough for this case. This avoids the choppy video start on HLS fMP4 playback. Tested with Chrome 106 & Edge 106. Closes #4516
joeyparrish
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Oct 7, 2022
Clearing the buffer seems to be not enough for this case. This avoids the choppy video start on HLS fMP4 playback. Tested with Chrome 106 & Edge 106. Closes #4516
JulianDomingo
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🤖 I have created a release *beep* *boop* --- ## [4.1.5](v4.1.4...v4.1.5) (2022-10-07) ### Bug Fixes * allow build without text ([#4506](#4506)) ([1db6265](1db6265)) * allow the playback on platforms when low latency APIs are not supported ([#4485](#4485)) ([55d1390](55d1390)) * check for negative rows before moving ([#4510](#4510)) ([31abae3](31abae3)), closes [#4508](#4508) * Filter unsupported H.264 streams in Xbox ([#4493](#4493)) ([1ecede6](1ecede6)) * Fix choppy HLS startup ([#4553](#4553)) ([1675bff](1675bff)), closes [#4516](#4516) * Fix errors with TS segments on Chromecast ([#4543](#4543)) ([15a1c60](15a1c60)) * Fix hang when seeking to the last segment ([#4537](#4537)) ([72a119d](72a119d)) * Fix HLS dynamic to static transition ([932d37c](932d37c)) * Fix HLS dynamic to static transition ([#4483](#4483)) ([932d37c](932d37c)), closes [#4431](#4431) * Fix in-band key rotation on Xbox One ([#4478](#4478)) ([5a8f09c](5a8f09c)), closes [#4401](#4401) * Respect existing app usage of Cast SDK ([#4523](#4523)) ([9c3a494](9c3a494)), closes [#4521](#4521) * **ttml:** Default TTML background color to transparent if unspecified ([#4496](#4496)) ([16da1e7](16da1e7)), closes [#4468](#4468) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
JulianDomingo
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Oct 7, 2022
🤖 I have created a release *beep* *boop* --- ## [4.2.2](v4.2.1...v4.2.2) (2022-10-07) ### Bug Fixes * allow build without text ([#4506](#4506)) ([7e93720](7e93720)) * allow the playback on platforms when low latency APIs are not supported ([#4485](#4485)) ([cf8c857](cf8c857)) * check for negative rows before moving ([#4510](#4510)) ([23f39d7](23f39d7)), closes [#4508](#4508) * Filter unsupported H.264 streams in Xbox ([#4493](#4493)) ([914a08a](914a08a)) * Fix choppy HLS startup ([#4553](#4553)) ([950ce69](950ce69)), closes [#4516](#4516) * Fix errors with TS segments on Chromecast ([#4543](#4543)) ([8204db6](8204db6)) * Fix hang when seeking to the last segment ([#4537](#4537)) ([3d6c768](3d6c768)) * Fix HLS dynamic to static transition ([d9ecbf3](d9ecbf3)) * Fix HLS dynamic to static transition ([#4483](#4483)) ([d9ecbf3](d9ecbf3)), closes [#4431](#4431) * Fix in-band key rotation on Xbox One ([#4478](#4478)) ([bc0a588](bc0a588)), closes [#4401](#4401) * Missing AES-128 key of last HLS segment ([#4519](#4519)) ([2c2677f](2c2677f)), closes [#4517](#4517) * Respect existing app usage of Cast SDK ([#4523](#4523)) ([3db2568](3db2568)), closes [#4521](#4521) * **ttml:** Default TTML background color to transparent if unspecified ([#4496](#4496)) ([0b5c985](0b5c985)), closes [#4468](#4468) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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Have you read the FAQ and checked for duplicate open issues?
Yes.
What version of Shaka Player are you using?
v4.2.1-main-9-ge826eb8e AND 3.0.5
Can you reproduce the issue with our latest release version?
Yes
Can you reproduce the issue with the latest code from
main?Yes
Are you using the demo app or your own custom app?
Both
If custom app, can you reproduce the issue using our demo app?
Yes
What browser and OS are you using?
Chrome 105 and Mac OS 12 Monterey
For embedded devices (smart TVs, etc.), what model and firmware version are you using?
N/A
What are the manifest and license server URIs?
Sent through email.
What configuration are you using? What is the output of
player.getConfiguration()?Sent Shaka demo through email.
What did you do?
I created an HLS VOD constructed from 10 second fragmented MP4 clips originating from a larger video. I played the manifest in Shaka Demo. I repeated this with VLC player and Safari's player, but the bug did not occur there.
What did you expect to happen?
I expected that the audio and video at the start of the stream would play together for the first 10 seconds.
What actually happened?
During the first 10 seconds, the audio plays successfully, but the video is choppy and mostly displays 2-3 frames. After the new m4s file is loaded upon the 10 seconds finishing, the video syncs to the audio and playback continues as expected.
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