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How to Solve VLC Not Playing MP4?

Written by Jason

It can be extremely vexing when you want to play a common file format - MP4 and it ends up in "fail to open" or "black screen" situation in VLC. There are many possible reasons that might lead to this VLC won't play MP4 issue like nonstandard MP4 codecs and corrupted MP4 files. Here, we provide you serval efficient solutions to VLC not playing MP4 problem.

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If you are not a VLC dedicated user, we recommend you one of the best alternatives to VLC for MP4 playback – 5KPlayer. This MP4 media player supports almost all MP4 file codecs and plays any MP4 files up to 4K with powerful restoring and rendering ability. It reads even incomplete and damaged MP4 videos. Download it right now to have a try!

Solve VLC Won't Play MP4

Reasons why your VLC can't play MP4 files:

There are many reasons that might lead to "VLC won't play MP4" issue: your MP4 files might get corrupted, the output selected might be incorrect, the video codec might not be supported, the MP4 file may have several video, audio, subtitle streams that burden VLC too much in decoding them. Make sure that the problem not lying in the MP4 file itself, and then you are good to go with the following solutions.

I. VLC MP4 Codec Problem:

VLC Plays most codecs with no codec packs needed: MPEG-2, MPEG-4, MPEG-4 ASP, H.264, DivX 4/5/6, XviD, SV1, 3ivX D4 and H.264/MPEG-4 AVCMKV, AMR, WebM, WMV, MP3… HOWEVER, MP4 files containing codecs like H.265 and other VLC unsupported A/V codecs cannot be read by VLC.

Solution 1: Download VLC Codec Pack

Try update your VLC to the latest version, and download VLC codec pack for this matter. There is not much to illustrate about this solution, since it is like "key-to-door" problem. Once you get the keys and you can open the certain door.

Solution 2: Convert MP4 codec to VLC supported codec

Directly converting the MP4 videos into MOV or other files formats that VLC can handle is one of the most convenient way to avoid VLC not playing MP4 issue. If you are not sure about the target converting format, you can test a certain video format that can be played by your VLC to decide. Here, we recommend you some professional converters you might be fond of: WinX/MacX video converter; Any video converter; Handbrake, Freemake Video Converter. Whichever you choose, be sure that it supports the needed output formats.

II. VLC MP4 Hardware Decoding Limitation:

If the MP4 video still cannot play back in VLC, chances are that it might contain too many subtitle tracks or rendering effects, which is difficult for hardware decoding and your video card doesn't like to accelerate.

Solution: Try disabling hardware video decoding in VLC

1. Find it in Tools --> Preferences. Then in the lower left of the window, click to show all settings.

Tackle VLC Won't Play MP4 Issue

2. Now navigate to "Input / Codecs" --> "Video Codecs" --> "FFmpeg", in there you'll want to uncheck the box that relates to "Hardware decoding".

Solve VLC MP4 Problem

3. Close VLC and open it up again, load up your video and see if that works.

III. Other Unknown VLC MP4 Problems:

If the above solutions cannot solve your particular MP4 playback issue in VLC, and you do not specifically need VLC to play mp4 files, we suggest that you change a player.

VLC MP4 Player Alternative - 5KPlayer

You can leave the MP4 playback problem to the professional MP4 player - 5KPlayer, which supports tons of A/V formats like h264, h265, VP8, VP9, Xvid and it is able to play incomplete, unfinished, damaged videos or an unknown format in its raw form. It is one of the best solutions to VLC not playing MP4. 5KPlayer also outshines other MP4 players in image rendering ability with 4K/8K video support. Other file formats like FLV, WMV, MKV are also supported by 5KPlayer. To solve mixed VLC problems like VLC not working, VLC H265 4K playback problems, you can refer to the links accordingly.

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