![]() I timed them, and the copy-to-output happens too fast for it to be re-encoding.When setting its parameters, it is important to use the following, to avoid re-compressing: Use Avidemux WITHOUT re-encoding to trim the MP4 to the precise start/stop frames.That means that you are likely to end up with a brief flash of the NEXT section at the end of every cut.The big problem is that if you play the video and pick the start/stop time, Handbrake only starts/stops at approximately the location you specifiy.But there’s no GUI for selecting the start/stop frame.And you can control the compression paramenters.Handbrake - You can tell Handbrake to convert only a section of a file from.I don't want to reencode the h264, because my video encoding has been done perfectly with HandBrake, and i don't want to modify/reencode that. After few days of research, i'm unable to find a shareware able to: change the volume of the AC3 without reencoding the h264 from my MP4 file. (That might actually accomplish my goal, but I can’t pick and choose the compression level.) I would like to increase/decrease the volume of these video. They will be re-compressed using H.264 video codec. VirtualDub (Windows) - does have “direct stream copy” to avoid re-compressing, but it doesn’t open.Unless otherwise noted, these were tested on a Mac running Big Sur, in late 2021. dv files, and very few NLE programs still support. I wanted to trim the junk before compressing, because if I edited the compressed file, even just to trim it, some NLE (non-linear editors) will uncompress and re-compress it, and that degrades quality, because video uses a lossy compression algorithm. dv into individual scenes and compress each scene.” So my goal became, “Trim the junk and compress.” Somewhere along the way, my requirement morphed into “split every. Great, right?īut then I noticed that some of them had long black section at the end. dv files down to about 15% of the original size. Packaged versions from various distributions are often outdated and do not behave as expected. That preset also adds surround sound, which is silly for home video, so I’m using the preset with audio overriden to discard the surround sound track. 6 Answers Sorted by: 376 Install ffmpeg Make sure you download a recent version of ffmpeg, and dont use the one that comes with your distribution (e.g. I decided to use the next step up, to try and avoid future regret, so I’m using “HQ 480p30”. dv master, using the “Fast 480p30” preset. ![]() Tinkering around with Handbrake, I found I could get videos indistinguishable from the. mp4 using H.264 compression, using a compressor that prioritized quality over size reduction. The downside is that it’s a Command Line app which requires a bit of a learning curve. By far, the best is FFmpeg which is more or less the Swiss Army Knife of video/audio editing. ![]() This can easily be done outside of Vegas using either paid or open source software. (That was considered high res in its day!) There is no way to do this inside of Vegas. When you copy video from one of these, you wind up with a “.dv” file on your computer, and the video is 720x480. To trim an MP4 clip without re-encoding, I think you might as well try Joyoshare Video Cutter. It does pretty much anything you could ever want to do to audio or video files, and is the foundation a significant amount of video software is built on.I used to own a MiniDV camcorder. use hardware acceleration for many (most?) operations and supports NVIDIA, AMD, Intel QuickSync, DXVA, etc.apply all sorts of overlays, including videos on top of or blended with other videos.apply filters and filtergraphs to content.output content to a network sink (can output to multiple local and network sinks simultaneously).transcode between video/audio codecs or losslessly copy streams from a source file into a new file with a different container format (like mp4 -> mkv).encode raw video and audio from hardware devices or screen capture.If you're not afraid of command-line programs or are willing to learn how to use them, ffmpeg is super powerful and, depending on the options it's compiled with, supports pretty much every audio and video codec and container format out there, even proprietary, niche, and super obscure ones.
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