Can't play MP4 files from Youtube

Hello,
I can't play most of the mp4 files downloaded from Youtube, eventhough after installing latest 'k lite codec pack'. I'd tried software such as wmp, vlc, quicktimes, either it didn't play at all, or it play audio only.
Not sure I can get help here in this forum.
How can I play these mp4 files?
Please help.
Thank you!!

What is the default videoplayer? What OS: Windows? Linux? Ios?

What method/software are you using to download/capture the videos from YouTube? I suspect that may be you problem. VLC will play just about any file. If VLC will not play it, it's probably a "bad" file.

One option is to try converting your files to a different format, like AVI or WAV (there are some open-source conversion programs out there if you do a diligent search on Google)....but I agree with Marc about VLC player, it does recognize many different formats and can be played on more than one type of OS, but if you run out of options in the player field, a conversion tool may be the next logical step.

Brian

Thanks a lots for your replies.

OS is windows7.
Default video player is Windows Media Player 12.0.7600.16667
Method to download from Youtube: Realplayer downloader
I tried already converted to different format using software 'Any video converter' (avi, wmi, etc), nothing worked, either no play at all, or only audio.

Below I listed media-info for some category (OK, only audio, only video with wmp).

mp4 (wmp can playback both video/audio)
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 22.5 MiB
Duration : 16mn 57s
Overall bit rate mode : Variable
Overall bit rate : 185 Kbps
Movie name : PPAP Training - YouTube
Encoded date : UTC 2013-02-05 00:29:48
Tagged date : UTC 2013-02-05 00:29:48
gsst : 0
gstd : 1018101
gssd : BADC20483HH1369374695103914
gshh : r12---sn-30a7en7s.c.youtube.com
widt : (Binary)
heig : (Binary)

ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : *** Email address is removed for privacy ***
Format settings, CABAC : No
Format settings, ReFrames : 1 frame
Format settings, GOP : M=1, N=30
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 16mn 57s
Bit rate : 87.6 Kbps
Maximum bit rate : 835 Kbps
Width : 560 pixels
Height : 360 pixels
Display aspect ratio : 16:10
Frame rate mode : Constant
Frame rate : 6.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.072
Stream size : 10.6 MiB (47%)
Tagged date : UTC 2013-02-05 00:29:48
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 16mn 57s
Bit rate mode : Variable
Bit rate : 96.0 Kbps
Maximum bit rate : 103 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 44.1 KHz
Compression mode : Lossy
Stream size : 11.6 MiB (52%)
Title : IsoMedia File Produced by Google, 5-11-2011
Encoded date : UTC 2013-02-05 00:29:48
Tagged date : UTC 2013-02-05 00:29:48



mp4 which wmp can open video only (no audio)
Format : dash
Codec ID : dash
File size : 16.3 MiB
Duration : 8mn 25s
Overall bit rate : 271 Kbps
Encoded date : UTC 2013-06-13 21:21:27
Tagged date : UTC 2013-06-13 21:21:27
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : *** Email address is removed for privacy ***
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 8mn 25s
Bit rate mode : Constant
Bit rate : 269 Kbps
Width : 640 pixels
Height : 360 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 15.000 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.078
Stream size : 16.2 MiB (99%)
Encoded date : UTC 2013-06-13 21:21:27
Tagged date : UTC 2013-06-13 21:21:27



mp4 which wmp can open audio only (no video)
Format : dash
Codec ID : dash
File size : 11.9 MiB
Duration : 13mn 7s
Overall bit rate mode : Constant
Overall bit rate : 127 Kbps
Encoded date : UTC 2013-05-08 07:00:15
Tagged date : UTC 2013-05-08 07:00:15
Audio
ID : 1
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 13mn 7s
Bit rate mode : Constant
Bit rate : 126 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 44.1 KHz
Compression mode : Lossy
Stream size : 11.8 MiB (99%)
Encoded date : UTC 2013-05-08 07:00:15
Tagged date : UTC 2013-05-08 07:00:15



Please help further.
Looks like the OK mp4 has longer 'media-info'.

Thanks again for your time & advise.

whtan02 said:

Hello,
I can't play most of the mp4 files downloaded from Youtube, eventhough after installing latest 'k lite codec pack'. I'd tried software such as wmp, vlc, quicktimes, either it didn't play at all, or it play audio only.
Not sure I can get help here in this forum.
How can I play these mp4 files?
Please help.
Thank you!!

Click to expand...

I run into the same problem a fair bit and nothing will play it but it usually turns out to mean that a new revision of the VLC program has come out.

When I download the new version of VLC player, it won't play videos downloaded previously, but videos downloaded with the new version will. They will also play with other programs too.

I suspect that this 'expired time' is built into VLC player and its also designed to affect other programs.

whtan02 said:

Thanks a lots for your replies.

OS is windows7.
Default video player is Windows Media Player 12.0.7600.16667
Method to download from Youtube: Realplayer downloader
I tried already converted to different format using software 'Any video converter' (avi, wmi, etc), nothing worked, either no play at all, or only audio.

Below I listed media-info for some category (OK, only audio, only video with wmp) <snip>.

Click to expand...

First, I advise getting rid of Real Player and all of the garbage it's put on your hard drive. I'm using Windows 8, Firefox 21.0, and an add-on called Download Flash and Video. My default media player is VLC 2.0.6, which is the latest version.

I have no trouble downloading media files, including MP4s from YouTube, and playing them with VLC.

Jim Wynne said:

First, I advise getting rid of Real Player and all of the garbage it's put on your hard drive. I'm using Windows 8, Firefox 21.0, and an add-on called Download Flash and Video. My default media player is VLC 2.0.6, which is the latest version.

I have no trouble downloading media files, including MP4s from YouTube, and playing them with VLC.

Click to expand...

Agreed. RealPlayer has caused me nothing but grief in the past, including the issue under discussion.

Mikishots said:

Agreed. RealPlayer has caused me nothing but grief in the past, including the issue under discussion.

Click to expand...

Thanks for your reply.

I'm using OS windows7. Please teach me solution after getting rid of realplayer. I like realplayer because it allows easier downloading via youtube or other video files, with just a click on the pop-up 'download button'.

Thanks a lots.

whtan02 said:

Thanks for your reply.

I'm using OS windows7. Please teach me solution after getting rid of realplayer. I like realplayer because it allows easier downloading via youtube or other video files, with just a click on the pop-up 'download button'.

Thanks a lots.

Click to expand...

Try the suggestion Jim gave.

Sometimes the easiest way isn't always the best way; Realplayer may seem easier for you, but if it's not working, it doesn't make sense to keep using it, right?