# Audio, but no Video **URL:** \ **Category:** Wowza Streaming Engine\ **Created:** [November 7, 2011, 11:54am UTC](https://community.wowza.com/t/audio-but-no-video/34872 "2011-11-07T11:54:23Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Daniel\_Caunt](https://avatars.discourse-cdn.com/v4/letter/d/977dab/32.png) [@Daniel\_Caunt](https://community.wowza.com/u/Daniel_Caunt)\ **Post date:** [November 7, 2011, 11:54am UTC](https://community.wowza.com/t/audio-but-no-video/34872/1 "2011-11-07T11:54:23Z")
I’m using Wowza Media Server 2 Perpetual 2.2.4 build27452, and I have come across several mp4 files in our collection (encoded from DVD using Handbrake) that only produce sound, no video. I’m using JW Player, as outlined [here](https://www.wowza.com/docs/how-to-use-longtail-jw-player-4-with-wowza-media-server). I tried re-encoding the films, still using Handbrake as it’s our only encoding software, but the problem persists. The problem also appears when I use the Adobe Flash player, as outlined [here](https://www.wowza.com/docs/how-to-install-and-configure-wowza-streaming-engine#quickTest). These same mp4 files play fine when streamed from Helix server to QuickTime player, so I know the files aren’t corrupt. Any ideas? Thanks in advance. ---
**Author:** ![Randall\_Auriemma](https://avatars.discourse-cdn.com/v4/letter/r/85e7bf/32.png) [@Randall\_Auriemma](https://community.wowza.com/u/Randall_Auriemma)\ **Post date:** [November 7, 2011, 7:52am UTC](https://community.wowza.com/t/audio-but-no-video/34872/2 "2011-11-07T07:52:52Z")
Hello dcaunt, Can you identify any difference between the working and non-working files using the Gspot or Mediainfo programs? Otherwise, please post an example of a non-working file. If you don’t want to post a link here in the forums, you can send a download link to support@wowza.com and include a reference to this thread. ---
**Author:** ![Richard\_Lanham](https://avatars.discourse-cdn.com/v4/letter/r/c68b51/32.png) [@Richard\_Lanham](https://community.wowza.com/u/Richard_Lanham)\ **Post date:** [December 22, 2011, 10:23pm UTC](https://community.wowza.com/t/audio-but-no-video/34872/3 "2011-12-22T22:23:56Z")
It seems like a player/encoding issue most likely. If the audio track is mp3, try 44100Hz, 128kbs, stereo. And try to use AAC instead of MP3, if possible. Richard ---
**Author:** ![Gerald\_Abbadie](https://avatars.discourse-cdn.com/v4/letter/g/858c86/32.png) [@Gerald\_Abbadie](https://community.wowza.com/u/Gerald_Abbadie)\ **Post date:** [December 22, 2011, 12:24pm UTC](https://community.wowza.com/t/audio-but-no-video/34872/4 "2011-12-22T12:24:09Z")
We stream video from Wowza server. Our player lets user to choose video quality : HD, HQ, SD, all in H264 mp4 encoded with the same software. HD and HQ video plays perfectly but SD (500Kbps encoding) sometimes (may be 1/5 times) play audio without video. Any clue to help to solve or find a way to solve this problem? ---
**Author:** ![Daniel\_Caunt](https://avatars.discourse-cdn.com/v4/letter/d/977dab/32.png) [@Daniel\_Caunt](https://community.wowza.com/u/Daniel_Caunt)\ **Post date:** [November 7, 2011, 2:05pm UTC](https://community.wowza.com/t/audio-but-no-video/34872/5 "2011-11-07T14:05:30Z")
Hi randall, Thanks for the quick reply. Due to an oversight on my part, it turns out that I wasn’t properly testing the new encoding. Once I realized that, I found that the new encoding of the media did work after all. So, I’m not sure why the old encoding didn’t work, but unless it becomes a recurring problem I’m not going to spend any more time right now trying to figure it out (too many other things to do at the moment). Re-encoding the media is simple enough and solved the problem. But thanks for your suggestions. I’ll keep them in mind if this comes up again.