# .mp4 video stop/start/freeze, restart/update no solution **URL:** \ **Category:** Help\ **Created:** [April 17, 2024, 3:25am UTC](https://forums.ankiweb.net/t/mp4-video-stop-start-freeze-restart-update-no-solution/43706 "2024-04-17T03:25:58Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![nickw2066](https://avatars.discourse-cdn.com/v4/letter/n/f17d59/32.png) [@nickw2066](https://forums.ankiweb.net/u/nickw2066)\ **Post date:** [April 17, 2024, 3:25am UTC](https://forums.ankiweb.net/t/mp4-video-stop-start-freeze-restart-update-no-solution/43706/1 "2024-04-17T03:25:59Z")
This post is similar to these threads: - [Videos don't start on anki (iphone)](https://forums.ankiweb.net/t/videos-dont-start-on-anki-iphone/35978) - [There is no sound when playing the video](https://forums.ankiweb.net/t/there-is-no-sound-when-playing-the-video/41506) My versions: iPhone iOS 17.4.1 Anki iOS 24.04 Hi, Recently Anki on my iPhone has had some trouble playing .mp4 videos that used to play fine. Some .mp4 videos still play fine, others seem to stop and start or lose volume or freeze before finishing. Other cards (including cards with .mp3 files or embedded YouTube videos) work fine. All cards (including those with .mp4 videos) work fine on my Mac (Anki 24.04.1). Any suggestions? Restarting my phone has not helped. Thanks, Nick ---
**Author:** ![dae](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/dae/32/65_2.png) [@dae](https://forums.ankiweb.net/u/dae)\ **Post date:** [April 17, 2024, 7:21am UTC](https://forums.ankiweb.net/t/mp4-video-stop-start-freeze-restart-update-no-solution/43706/2 "2024-04-17T07:21:18Z")
AnkiMobile relies on iOS for playing videos, so I’m afraid this sounds like an iOS bug that was introduced in an iOS update. If it’s consistently only certain videos, have you tried playing those videos inside iOS, but outside AnkiMobile? ---
**Author:** ![nickw2066](https://avatars.discourse-cdn.com/v4/letter/n/f17d59/32.png) [@nickw2066](https://forums.ankiweb.net/u/nickw2066)\ **Post date:** [April 17, 2024, 8:34pm UTC](https://forums.ankiweb.net/t/mp4-video-stop-start-freeze-restart-update-no-solution/43706/3 "2024-04-17T20:34:18Z")
I copied one video from my collection.media folder to my Desktop on my mac. Then (after it had uploaded to iCloud), I played it using the Files app on my phone. It seemed to play fine. Curious, I opened Anki, searched for the card with the video, and previewed it. Here is the initial screenshot after pressing play: ![IMG_9255.PNG](https://us1.discourse-cdn.com/flex002/uploads/anki2/original/3X/b/7/b715a9cf4ae5080cec96260eed0de02de9f212da.jpeg) The video did not start, then this screen appeared: ![IMG_9256](https://us1.discourse-cdn.com/flex002/uploads/anki2/original/3X/f/4/f4b3bd19777a30c2d68f45f54b07b0a0ef068da2.png) So, in summary, it seems the video can play in the iOS Files app but within Anki there is a problem. Maybe it is a iOS browser issue with autoplay? See: [MP4 files not playing in Safari on Iphones | Cloudron Forum](https://forum.cloudron.io/topic/10723/mp4-files-not-playing-in-safari-on-iphones/19) ---
**Author:** ![dae](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/dae/32/65_2.png) [@dae](https://forums.ankiweb.net/u/dae)\ **Post date:** [April 19, 2024, 1:11am UTC](https://forums.ankiweb.net/t/mp4-video-stop-start-freeze-restart-update-no-solution/43706/4 "2024-04-19T01:11:50Z")
Please use the cog to view the card info for that card, then let me know the card ID. I’ll try to reproduce the problem on a device here. ---
**Author:** ![nickw2066](https://avatars.discourse-cdn.com/v4/letter/n/f17d59/32.png) [@nickw2066](https://forums.ankiweb.net/u/nickw2066)\ **Post date:** [April 19, 2024, 1:49am UTC](https://forums.ankiweb.net/t/mp4-video-stop-start-freeze-restart-update-no-solution/43706/5 "2024-04-19T01:49:06Z")
Thank you. The card ID is 1700638737211. ---
**Author:** ![dae](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/dae/32/65_2.png) [@dae](https://forums.ankiweb.net/u/dae)\ **Post date:** [April 19, 2024, 6:19am UTC](https://forums.ankiweb.net/t/mp4-video-stop-start-freeze-restart-update-no-solution/43706/6 "2024-04-19T06:19:23Z")
Thank you. I have made some changes that may help with this - if you’d like to try a beta build when one becomes available, please let me know. [https://docs.ankimobile.net/beta-testing.html](https://docs.ankimobile.net/beta-testing.html) ---
**Author:** ![huhu](https://avatars.discourse-cdn.com/v4/letter/h/5e9695/32.png) [@huhu](https://forums.ankiweb.net/u/huhu)\ **Post date:** [April 25, 2024, 1:28pm UTC](https://forums.ankiweb.net/t/mp4-video-stop-start-freeze-restart-update-no-solution/43706/7 "2024-04-25T13:28:52Z")
It is recommended that the image size of the video file should not be greater than 640 x 360. It is recommended to use the baseline H.264 profile-coded .mp4. In addition, the bitrate of the iPhone is limited to 1.5Mb, but it is recommended to keep the bitrate below 900kb. ---
**Author:** ![system](https://us1.discourse-cdn.com/flex002/uploads/anki2/original/1X/8f1279ababc5879d54e4838989f606cfe55af8c7.jpeg) [@system](https://forums.ankiweb.net/u/system)\ **Post date:** [May 25, 2024, 1:28pm UTC](https://forums.ankiweb.net/t/mp4-video-stop-start-freeze-restart-update-no-solution/43706/8 "2024-05-25T13:28:58Z")
Closed on May 25, 2024, 1:28pm UTC This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.