[BUG]: [iOS] Video plays for some time, then randomly starts buffering and stalls

[sntg-p]

Version

6.4.3

What platforms are you having the problem on?

iOS

System Version

17.4

On what device are you experiencing the issue?

Real device, Simulator

Architecture

Old architecture

What happened?

It seems that while playing a video on iOS (HTTP download, not streamed, signed AWS S3 URL), at some random point it will start throwing these messages in the console:

nw_connection_add_timestamp_locked_on_nw_queue [C30] Hit maximum timestamp count, will start dropping events

After these messages with different C-values get thrown, it will at some point log this and fire the onBuffer event with isBuffering: true:

{
  "transportType" : "HTTP Progressive Download",
  "mediaType" : "HTTP Progressive Download",
  "BundleID" : "ReactNativeVideoFreezeBug",
  "name" : "MEDIA_PLAYBACK_STALL",
  "interfaceType" : "Wifi"
}

When this happens, the user may invoke the seek method and play already buffered segments in which case it will fire the onBuffer event twice: first with isBuffering: false and then isBuffering: true. This double event fire happens again when it reaches the time where it originally threw the MEDIA_PLAYBACK_STALL message, which gets thrown again.

The problem does not appear instantly, it seems that it appears after playing some videos. Similar problems occur if the source URL is changed.

Reproduction

No response

Reproduction

Step to reproduce this bug are:

Just play two or three videos (HTTP download, AWS S3 signed URLs) until the problem appears.

[moskalakamil]

Hi! Thank you for reporting the issue, it would be perfect if you could provide an example videos when the error occurs. Thanks!

[sntg-p]

Untitled-1.mov

Here I have recorded the moment the problem happens, after about 4 minutes of playback.

[rohankm]

i can confirm this isssue... even im facing

nw_connection_add_timestamp_locked_on_nw_queue [C5] Hit maximum timestamp count, will start dropping events

probably this is the reason for #3675

[rohankm]

also, this problem occurs in certain videos...

[moskalakamil]

Hi @sntg-p, do you use DRM for video? This error is not for every video, so it would be perfect if you could you provide a sample

[sntg-p]

Hey @moskalakamil, we are currently not using DRM for video.

I was cleaning my sample repo and added a video with long expiration time to share it with you but since updating to RNV to v6.4.5 the video no longer freezes. After this finding I updated it in our app, and again it seems like it works.

It's late here so tomorrow I'll be checking with my team to see if they still have issues on their devices or if we can close this.

[moskalakamil]

Sure, thanks for answering. Please let us know after you will check :))

[sntg-p]

We no longer have videos freezing on iOS, thanks for your work!