# MP4 video not working - Firefox/Chrome **URL:** \ **Category:** RapidWeaver Classic\ **Created:** [March 31, 2020, 4:26pm UTC](https://forums.realmacsoftware.com/t/mp4-video-not-working-firefox-chrome/32044 "2020-03-31T16:26:00Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![apex\_lloyd](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/apex_lloyd/32/13969_2.png) [@apex\_lloyd](https://forums.realmacsoftware.com/u/apex_lloyd)\ **Post date:** [March 31, 2020, 4:26pm UTC](https://forums.realmacsoftware.com/t/mp4-video-not-working-firefox-chrome/32044/1 "2020-03-31T16:26:00Z")
Hi guys, Another day, another problem. I’m using the stacks4stacks - Player stack. It’s working fine in preview, however when I come to preview in Firefox & Chrome, the audio plays, the video doesn’t. The video works fine using Safari browser. Things i’ve checked: - video flag set in Player stack - Video is .mp4 - URL is correct & pointing to the right file on the server end - I’ve checked for the presence of MIME on the server end (i can see .MP4 is configured) In my limited experience I’m now at a loss as to why the video isn’t playing correctly. Appreciate any & all advice, Kind regards, Lloyd ---
**Author:** ![Fuellemann](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/fuellemann/32/22871_2.png) [@Fuellemann](https://forums.realmacsoftware.com/u/Fuellemann)\ **Post date:** [March 31, 2020, 4:51pm UTC](https://forums.realmacsoftware.com/t/mp4-video-not-working-firefox-chrome/32044/2 "2020-03-31T16:51:22Z")
Could you add the webm file as well? These browsers might need those to display the video… ---
**Author:** ![apex\_lloyd](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/apex_lloyd/32/13969_2.png) [@apex\_lloyd](https://forums.realmacsoftware.com/u/apex_lloyd)\ **Post date:** [March 31, 2020, 4:57pm UTC](https://forums.realmacsoftware.com/t/mp4-video-not-working-firefox-chrome/32044/3 "2020-03-31T16:57:10Z")
Hi Jan, do you mean the MIME webm? ---
**Author:** ![Fuellemann](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/fuellemann/32/22871_2.png) [@Fuellemann](https://forums.realmacsoftware.com/u/Fuellemann)\ **Post date:** [March 31, 2020, 5:43pm UTC](https://forums.realmacsoftware.com/t/mp4-video-not-working-firefox-chrome/32044/4 "2020-03-31T17:43:12Z")
You will need two video files for player. One .mp4 and one .webm, at least that works for me. ---
**Author:** ![apex\_lloyd](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/apex_lloyd/32/13969_2.png) [@apex\_lloyd](https://forums.realmacsoftware.com/u/apex_lloyd)\ **Post date:** [March 31, 2020, 5:54pm UTC](https://forums.realmacsoftware.com/t/mp4-video-not-working-firefox-chrome/32044/5 "2020-03-31T17:54:16Z")
Hi Jan, so how do you configure that? ---
**Author:** ![Fuellemann](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/fuellemann/32/22871_2.png) [@Fuellemann](https://forums.realmacsoftware.com/u/Fuellemann)\ **Post date:** [March 31, 2020, 6:11pm UTC](https://forums.realmacsoftware.com/t/mp4-video-not-working-firefox-chrome/32044/6 "2020-03-31T18:11:46Z")
Isn’t there a link in the stack settings, one for mp4 and one for webm? ---
**Author:** ![joeworkman](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/joeworkman/32/23780_2.png) [@joeworkman](https://forums.realmacsoftware.com/u/joeworkman)\ **Post date:** [March 31, 2020, 6:14pm UTC](https://forums.realmacsoftware.com/t/mp4-video-not-working-firefox-chrome/32044/7 "2020-03-31T18:14:25Z")
If you put the URL to the mp4 directly in the URL bar, it should play. If it does not play, then the encoding of the mp4 is wrong. You will need to re-encode the video. ---
**Author:** ![apex\_lloyd](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/apex_lloyd/32/13969_2.png) [@apex\_lloyd](https://forums.realmacsoftware.com/u/apex_lloyd)\ **Post date:** [March 31, 2020, 6:17pm UTC](https://forums.realmacsoftware.com/t/mp4-video-not-working-firefox-chrome/32044/8 "2020-03-31T18:17:42Z")
Hi Joe, Thanks for that. I put the URL into Firefox & it only played the audio, so guess it’s wrongly encoded. Any suggestions for the best solution to encoding it? I’ve used both the MacX video converter pro, and the free Adapter app. I selected .mp4 as the format. Cheers, Lloyd ---
**Author:** ![apex\_lloyd](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/apex_lloyd/32/13969_2.png) [@apex\_lloyd](https://forums.realmacsoftware.com/u/apex_lloyd)\ **Post date:** [March 31, 2020, 6:18pm UTC](https://forums.realmacsoftware.com/t/mp4-video-not-working-firefox-chrome/32044/9 "2020-03-31T18:18:56Z")
Hi Jan, I figured that out just after I’d replied to your previous message. I put the .webm version in the stack settings, but it didn’t work either. I’m assuming the file is wrongly encoded. ---
**Author:** ![apex\_lloyd](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/apex_lloyd/32/13969_2.png) [@apex\_lloyd](https://forums.realmacsoftware.com/u/apex_lloyd)\ **Post date:** [March 31, 2020, 6:50pm UTC](https://forums.realmacsoftware.com/t/mp4-video-not-working-firefox-chrome/32044/10 "2020-03-31T18:50:01Z")
All working now, no idea what I did wrong, another noob mistake, but thanks again for your patience & replies, Kind regards, Lloyd ---
**Author:** ![joeworkman](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/joeworkman/32/23780_2.png) [@joeworkman](https://forums.realmacsoftware.com/u/joeworkman)\ **Post date:** [March 31, 2020, 6:54pm UTC](https://forums.realmacsoftware.com/t/mp4-video-not-working-firefox-chrome/32044/11 "2020-03-31T18:54:18Z")
what was it? ---
**Author:** ![apex\_lloyd](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/apex_lloyd/32/13969_2.png) [@apex\_lloyd](https://forums.realmacsoftware.com/u/apex_lloyd)\ **Post date:** [March 31, 2020, 7:00pm UTC](https://forums.realmacsoftware.com/t/mp4-video-not-working-firefox-chrome/32044/12 "2020-03-31T19:00:27Z")
Joe, The file was corrupt. I grabbed the original again, didn’t edit it this time, and voila! It’s displaying as expected. Thanks again 🙂 ---
**Author:** ![system](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/system/32/25301_2.png) [@system](https://forums.realmacsoftware.com/u/system)\ **Post date:** [May 1, 2020, 5:00am UTC](https://forums.realmacsoftware.com/t/mp4-video-not-working-firefox-chrome/32044/13 "2020-05-01T05:00:33Z")
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