Lossless MPEG-4 editor?

[jgoldberg]

Is there any lossless mpeg-4 video editor?

I realize that chopping up a clip on a non-keyframe requires reencoding. I just want to edit mpeg4.

I read about Vegas, but I want something that can chop up videos where the only copy i have is in mpeg4.

[poisondeathray]

Can you clarify what you mean by MPEG-4?

It could mean about 20 different things (including DivX, XviD, mp4 container, AVC, AAC...etc...)

I think avidemux (and the newest beta of virtualdub) do "smart rendering" such that they just re-encodes the frames around the cut points

[jgoldberg]

h.264 in mpeg4 container.

I like avidemux, but I want something where I can insert a picture or photo or type text (by itself, not over the video). I don't want to use premiere just for creating youtube stuff.

Womble mpeg editor was extremely fast, but still only supports mpeg1 and 2.

[bond]

encode a new mpeg-4 stream which includes your picture or text with the same h264 options as the rest of your stream and merge it to the rest of the stream

[jgoldberg]

with what? quicktime?

[poisondeathray]

One option, is to use with avisynth - Just use the same encoder settings as the 1st clip (especially dimensions).

Here is a sample script for making a video clip from a still
http://forum.videohelp.com/topic99389.html#still2vid

You could append the clips with avidemux, yamb.

[jgoldberg]

Okay, thanks.

[Ranguvar]

poisondeathray's suggestion is not lossless.

AVIDemux should be able to do what you want, and I believe YAMB will too.

Vegas might work, I am not sure. Editing from lossless before and saving into the same lossless gave me a notice during certain parts of the render that it was not re-compressing, just copying the original data, as nothing needed to be done.

[fib0by]

I'm looking for something similar, capable to edit .m2ts files (1080i, h.264) created by a regular AVCHD camcorder. My requirements are very simple: I just want to cut off arbitrary chunks of the file without re-encoding the whole thing. Re-coding around the cut to close the GOP is fine.

[Ranguvar]

I'd post your own thread...

But anyways, TsRemux (http://forum.doom9.org/showthread.php?t=125447) should do the trick.

[jgoldberg]

Just an adjunct to my old thread, I had an mpeg4 video-only stream from a webcam source 352x288 using the MP4 codec in VLC that, when played in the same version of VLC, wouldn't skip forward or show the total time. I tried using mp4creator, but it said: " bad QuickTime height specified:". Also avidemux crashes when trying to open it.

[LoRd_MuldeR]

Just an adjunct to my old thread, I had an mpeg4 video-only stream from a webcam source 352x288 using the MP4 codec in VLC that, when played in the same version of VLC, wouldn't skip forward or show the total time. I tried using mp4creator, but it said: " bad QuickTime height specified:". Also avidemux crashes when trying to open it.

Are you using the latest revision (http://avidemux.razorbyte.com.au/#avidemux2.4) of Avidemux?
If so, you should report your problem and provide a short sample to reproduce the crash. Otherwise you should update and try again...

[jgoldberg]

Are you using the latest revision (http://avidemux.razorbyte.com.au/#avidemux2.4) of Avidemux?
If so, you should report your problem and provide a short sample to reproduce the crash. Otherwise you should update and try again...

sure:

"a fatal error has occurred"

version 2.4.3, build 4276

http://rapidshare.com/files/147577600/my-dog.mp4

[LoRd_MuldeR]

sure:

"a fatal error has occurred"

version 2.4.3, build 4276

http://rapidshare.com/files/147577600/my-dog.mp4

I can re-produce the crash with Avidemux. But something seems to be strange with that file!
The file is only 106 KB in size (was that intended?) and I neither get any video output in MPlayer nor in MPC.
Am I expected to see anything ???

Also the backtrace tells me that Avidemux crashes in the mpeg indexer:
Assert failed at file C:\Dev\avidemux_2.4\avidemux\ADM_inputs\ADM_mpegdemuxer\dmx_indexer.cpp, line 227

This indicates either a bug in the indexer or your file is borked and the indexer isn't prepared for that problem...

[jgoldberg]

I can re-produce the crash with Avidemux. But something seems to be strange with that file!
The file is only 106 KB in size (was that intended?) and I neither get any video output in MPlayer nor in MPC.
Am I expected to see anything ???

Also the backtrace tells me that Avidemux crashes in the mpeg indexer:
Assert failed at file C:\Dev\avidemux_2.4\avidemux\ADM_inputs\ADM_mpegdemuxer\dmx_indexer.cpp, line 227

This indicates either a bug in the indexer or your file is borked and the indexer isn't prepared for that problem...

It was originally 62mb, but I didn't want to send you that. I chopped it up in virtualdub's hex editor.

[LoRd_MuldeR]

It was originally 62mb, but I didn't want to send you that. I chopped it up in virtualdub's hex editor.

Hmmm, blindly chopping the file may produce a corrupted file. So Avidemux might not crash for the original reason (but maybe it does - we don't know).
You should cut out a piece of ~5 seconds with a suitable editor and make sure the sample plays properly in a player...

[jgoldberg]

I'll record a new video with the original videolan parameters since the vdub hexeditor overwrote the original. Avery Lee, can't you put a "Save As" function? :rolleyes:

[jgoldberg]

I figured out the problem, I was putting mp4v video into an mpeg2 ts file, or "encapsulation method" according to vlc. :o VLC doesn't give a warning about this.

the video is bad because the lights were off.

http://rapidshare.com/files/147599623/family-guy.mp4


Also, to clarify, avidemux worked great with the lossless editing of mpeg-4 video files. I think ranguvar was confused as I was actually posting two different questions, one about chopping the mpeg4's, and another question was how to make a video from an mp3 file, and also, third, how to make a video with text. Windows Movie Maker does that fairly easily. I know, I know, wmv sucks.

[LoRd_MuldeR]

the video is bad because the lights were off.
http://rapidshare.com/files/147599623/family-guy.mp4

I still don't get any video output from MPlayer or MPC. Also Avinaptic doesn't give proper information.
So I still think that file might be corrupted/invalid and thus crashes the Avidemux...

how to make a video from an mp3 file

Load an image sequence (or an existing video), add the MP3 as "External MP3" and save the result. (Avidemux)

how to make a video with text. Windows Movie Maker does that fairly easily. I know, I know, wmv sucks.

Maybe you may abuse Avidemux' subtitle feature for that. Or use a commercial editor, like Sony Vegas or Adobe Premiere...

[lilhobo]

doesnt vegas handle MPG4, coz they have their own mp4 codec installed. try their demo from their site