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Windows / Re: Cutting short clips from MP4's
« Last post by eumagga0x2a on December 14, 2017, 08:55:13 PM »
In copy mode (no reencoding, the original quality is preserved), the start marker must be set to an I-frame, the end marker may be at a P-frame, but it is safer to set it also to an I-frame. If you reencode, you can put the markers anywhere you want.

This is a fundamental limitation due to the nature of video compression.

Edit: don't use AVI as output container for any modern codecs (h264, HEVC).
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Windows / Cutting short clips from MP4's
« Last post by canalrun on December 14, 2017, 08:42:53 PM »
Warning – Newbie Here.

I'm using a Avidemux  2.7.0 64bit on Windows 10.

I have a 5 minute or so MP4. I would like to cut small clips of about 15 seconds each from this and save as MP4s.

I'm finding when I set the A and B, then output my clip it seems to output a greater region of the original video than I had requested.

Although I am no expert, it is likely aligning itself to nearest I-FRMs rather than the P-FRMs I have selected with the A and B markers.

For Video Output I am using Copy. For Audio Output I am also using Copy – although I really don't care about audio. For Output I am using MP4 Muxer.

Is it required to align itself to I-FRMs or is am I just not using it correctly? Is there something I can do that will allow me to choose more precisely where I cut – maybe by selecting a Video Output format or maybe by changing the input video to a different format (like AVI… ?)?

Barry.
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Windows / Re: Timed AddLogo flt. -- someday?
« Last post by Avidemux-Fan2 on December 14, 2017, 08:17:57 PM »

 @Jan Gruuthuse, but i don't want the black or white background or any other background color of the logo on the video, my png logo has transparency only on the background and that's what png for don't you think so !! i think Alpha channel in Avidemux has to be more opened to png logos because as you know png logos doesn't have background but only the main symbol.
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Windows / Re: Can't append mp4 files using Mp4v2 muxer?
« Last post by Jan Gruuthuse on December 14, 2017, 11:03:39 AM »
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Windows / Re: Timed AddLogo flt. -- someday?
« Last post by Jan Gruuthuse on December 14, 2017, 07:59:41 AM »
Ps, just in case you didn't know this: youtube demo: Applying 2 Combined filter (logo swap)

and some more: Avidemux How To
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Windows / Re: Timed AddLogo flt. -- someday?
« Last post by Jan Gruuthuse on December 14, 2017, 07:55:06 AM »
If the png contains transparency (alpha channel, I believe) then the setting is disabled.
If you want alpha to work on complete logo: convert logo.png to logo.jpg ;) then this should work.
png can contain alpha channel, jpg not.
ps.: notice black background in mtv.jpg
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Windows / Re: Timed AddLogo flt. -- someday?
« Last post by Avidemux-Fan2 on December 14, 2017, 07:12:18 AM »
Thank you sir for your reply.
Multi add logo was always possible and i never knew it (i feel dumb right now).
but the transparency or opacity which is Alpha [255] doesn't work, it seems deactivated i even added the png logo 3 times (screenshot attached).

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c9244b9            [coreAudioDevice] Stop sending data immediately after receiving stop request + replace the deprecated CloseComponent function
ubuntu HWE 16.04.3 LTS 64 bit x86 SMP, QT5, x265 version 1.9: avidemux 2.7.0 171214-64bit HWE Xenial with x265 version 1.9
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Main version 2.6 / Re: Extract a clip from mpeg transport stream
« Last post by Jan Gruuthuse on December 14, 2017, 06:01:53 AM »
>8 >8  I have the ffmpeg command that does what I want but want it integrated with a GUI frontend for selecting start/stop points. Also do no want to re-encode/transcode.

You could forward the ffmpeg command in the forum or to the developer(s) by pm.
- Perhaps the developer(s) have an idea how to and can put you on the road.
- Or one of the users with advanced scripting knowledge has away round.

Code contributions are always welcome on https://github.com/mean00/avidemux2
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Windows / Re: Timed AddLogo flt. -- someday?
« Last post by Jan Gruuthuse on December 14, 2017, 05:54:44 AM »
>8>8 ( Opacity ---> the ability to choose from 0 to 100% )  >8>8 and the ability to add a second Logo on the same video (Multi Logo Add option) >8 >8
Level of transparency can be set with Alpha [255] - 0, if no transparency is detected in the png logo

Please apply 2 times logo filter :

used mtv logo.png twice in this case.
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