H264/AVC Level Editor
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H264LevelEditor is a free and small tool to edit an H264/AVC encoded video stream and change IDC profile level (see here for detailed info about IDC levels).
Works both on MKV containers and raw H264 streams (*.h264, *.264, *.ts or any other file containing H264 encoded video).
It's a portable software, no need to install it.
Quick intro
Video stream/file is edited in-place, which means:
- fast editing
- no need to reencode the file (save time)
- no need to demux, edit and remux streams (save time and HDD space)
To make a long story short, some mediaplayers (like my Samsung C6000 LED TV and Sony PS3) search the video file being played for an header info named AVC profile level; if this level is greater than the requested (supported) one they simply refuse to play it, even if they could.
BluRay specifications requires level 4.1, which is supported by all actual HD mediaplayers. Many of the video files you'll find on internet were encoded with an unnecessary high level, like 5.1.
The right way to change AVC level is to reencode the file; this is really time consuming, even if you have a recent CPU.
A quick way is to change some bytes inside the file and make it appear as being encoded with a different level; if you're lucky, changing that 5.1 to 4.1 will make the file playable on your mediaplayer.
Just to be clear: H264LevelEditor does not change video stream compression.
It only changes a value in file header, where it "declares" its level to the world.
Many of the 5.1 encoded files out there are not really 5.1, but over-leveled 4.0 or 4.1.
If the file itself is encoded using 5.1-only features, and your player is not able to decode it, well... you must reencode it, no way.
Usage help
Using H264LevelEditor is easy as 1-2-3:
- select the video file to edit by pressing then tree-dots button, or drag&drop the file directly from Windows Explorer
- H264LevelEditor will show actual AVC level into the "h264 level" box, choose the new level you want to set
- press "Change level" button
- click on "Donate" button (well, this is obviously optional ;) )
v.1.2.0 - 2012-01-24
- NEW: Search limit can now be extended up to first 100MB of the file (default is 1MB). This adds better support for MP4 files.
- NEW: initial (and really experimental) support for H264 encoded AVI files. Please remember that AVI is not a good container for H264/AVC stream.
- NEW: added automatic software update checking feature, can be set into Options dialog
- FIX: fixed search algorithm to avoid @n.k profiles detection
please see comments here for further details:
http://coolsoft.altervista.org/comment/363#comment-363
v.1.1.0 - 2011-08-05
- NEW: backup feature, allows to undo any changes to input file
- NEW: improved search algorithm, now changes the muxing tag too
- NEW: fix to recognize mislabeled profiles, such the ones produced with very old encoders
Download
H264LevelEditor it's a portable software (single EXE), no need to install it.
WARNING: .NET Framework 2.0 or newer is required: 2.0 (x86) - 2.0 (x64) - 4.0 (client profile)
(Windows Vista comes with .NET Framework 3.0 preinstalled, Windows 7 comes with .NET Framework 3.5 preinstalled.)
| H264LevelEditor_1.2.0.zip | |||
| Release date | 2012-Jan-24 | SHA1 | 11a9cff14e720b19db6ad71ae89f0ec29415b8a1 |
| Size | 210,276 bytes | MD5 | b9a17f43f5e2518f7e7e076575d5feed |
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H264 level editor does not open in xp sp3
Thanks for contestar.El problem is that it gives no error message, but that I simply click on the application, it opens
> I can not abrirla
> I can not abrirla
> I simply click on the application, it opens
I'm lost: does it open or not?
H264 level editor does not open in xp sp3
Sorry for the translation application opens automatica.NO
for many times to click on the icon
If you're spanish, try to
If you're spanish, try to explain your question in your native language... since I speak italian I'll try to understand ;)
error
Everytime I try to use the program I get this error message
Runtime error:
--------------------------------------------------
Error: System.UnauthorizedAccessException
Message: O acesso ao caminho 'C:\Users\Patrick\Downloads\[AnimaKai] DEVIL SURVIVOR 2 THE ANIMATION - 06 [720p].mkv' foi negado.
Stack trace:
em System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
em System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy)
em System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share)
em #=qh3ilAEMlgKy__2dD38lFvafokCsWRPzRbKOYuFwPqNyGhrAgvaYAHCJysCjCaRTF.#=qNTTsPTuKLJTf19F30lDtYXIhtpWLrBNeYs602LPIxfg=(Object #=qKzvLcvaEWsaB3cW2XHb6$Q==, EventArgs #=qnNJelOmcJaFc_jLAzBHJiQ==)
It seems that the file you're
It seems that the file you're trying to edit is somewhat protected and H264LevelEditor is not able to open (and/or write) it.
If you're on Win7/8, try to run H264LevelEditor as administrator (right-click and choose "Run as administrator"); it should not be needed, anyway it worths a try.
Error
I'm getting about the same error as the above user. I tried running as administrator and it makes no difference. I thought it might be the anti-virus blocking it, but I uninstalled and rebooted with the same results.
Runtime error:
--------------------------------------------------
Error: System.UnauthorizedAccessException
Message: Access to the path 'C:\Users\fred\Desktop\movie.mp4' is denied.
Stack trace:
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share)
at #=qh3ilAEMlgKy__2dD38lFvafokCsWRPzRbKOYuFwPqNyGhrAgvaYAHCJysCjCaRTF.#=qNTTsPTuKLJTf19F30lDtYXIhtpWLrBNeYs602LPIxfg=(Object #=qKzvLcvaEWsaB3cW2XHb6$Q==, EventArgs #=qnNJelOmcJaFc_jLAzBHJiQ==)
Where's the H264LevelEditor
Where's the H264LevelEditor.exe file located?
I mean: are you running it from an USB key or a network drive?
It seems that the .NET executable doesn't have the required permissions to access desktop folder; this could happen if a .NET executable is started from a non-system disk.
If so, try to copy (not link) it on your desktop and launch it from there.
Can you also confirm that the .mp4 file is writable (try to rename it...)?
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