You may find also find that videos created by the PiCamera don't open in VirtualDub (black screen) I’m not sure why this should be the case but re-encoding with WinFF (as mentioned in my previous post) should provide a workable fix. The next best thing is to h.264 is the Xvid MPEG-4 codec set to maximum image quality this makes large files but maintains the image quaility untill you convert it back into h.264.
#Avidemux h.264 mp4#
If you want an alternative video editor then VirtualDub is quite good, you will need to install the quicktime plugin to open mp4 however it worth noting that saving back into h.264 is not possible as far as I'm aware. This is why you cannot simply cut the start of a video clip to where you like it must being with an Intra frame otherwise the other frames cannot be decoded.Ī work around to this problem would be to re-encoding all your videos files with a very low or GOP sequence, a keyframe of 1 or use a more suitable video codec for editing like lossy motion jpg.Īs for Avidemux choking I'm not sure why you're having problems if you save your files as MP4 and use the Copy mode then playback shouldn't be affected.ĭespite it's many bugs and flaws I still believe Avidemux is one of the best video editors for cutting and merging frames it's only a pity their encoder engine is utter crap. In order for a video frame to be decoded you need an Intra frame (key frame), for the next frame predictive or bi-directional to be decoded you still need to refer back to the original Intra frame in the sequence. However it's not a good format for editing due to the large GOP sequence / keyframes and in some cases video footage with only one starting keyframe. mp4 to avi or avi to mp4 it can sometimes mess up the saved work especially DivX / Xvid content.Įverything is h.264 these days on the internet because it's one of the best video compression codecs when compare to the likes of mpeg-2 or Sorenson Spark. There is a very nasty bug in Avidemux (Windows only?) it has a tendency to drop the end frame of a chopped clip a work around would be to cut but the end position is one frame ahead of where you think it should be.ĭon't change the video container when you save your work, i.e. (-crf is frame quality encoding 22 is high, 25 still good after that video gets blocky from 30 onwards) WinFF (ffmpeg frontend) can do this for you using the following preset: -crf 22.0 -acodec copy -vcodec libx264 -flags +loop+mv4 -cmp 256 -me_range 16 -g 1 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -qmin 10 -qmax 51 -qdiff 4 Given that h.264 is highly compressed data it's unlikely you'll have enough "I" frames to crop around so basically all your footage would require re-encoding with a key frames or GOP of 1 (or something smaller like -g 5). The built the video encoder is rubbish it's been a while since I used Avidemux but I had problems trying to use the h.264 and h.263 encoder either the resolution was restricted or saved video had errors. If you insert a video clip it must start with an Intra frame "I", predictive or bi-directional are not allowed when saving with "copy" mode the only other option is to re-encode your footage. You can only merge 2 clips providing they have the same codec, frame rate and resolution. Once you are done with it, save your video file.Avidemux is the best tool for the job but it does suffer from a few annoying bugs and limitations. You can open and edit VP8 and VP9 files just fine, you just cant save using those formats. Avidemux can output DV, FFV1, H.264, HEVC, MPEG2, MPEG4 ASP and YV12 video but it can NOT output VP8, VP9 or AV1.
#Avidemux h.264 software#
Set audio stream to “AAC (Faac)” and configure its settings. Avidemux is a free and open-source software application for non-linear video editing and transcoding multimedia files. All in all avidemux is a really handy and essential tool for for doing video conversion and simple editing of a video file or clip. constant rate factor so that the quality of video remains same. Now configure its settings and the only option that you have to change is encoding process. The next step is to set video stream to MPEG-4 AVC.
#Avidemux h.264 Pc#
The first step is to launch Avudemux on your PC and load the desired video files into it.
#Avidemux h.264 how to#
Here are some steps that will guide you on how to reduce video size with Avidemux. Steps for compressing videos using Avidemux: You can change format and size of videos with this software without losing quality in a convenient manner. However, there is a loss of quality while resizing video but you can avoid it with the help of some video editing programs such as Avidemux. Videos compression is necessary if you want to upload your video on website because web does not accept large files with great ease.