![]() Vegas renders as an MP4 file with lossy aac audio (No other option). Then I put the wav file in Vegas, I add some pictures or a bunch of video tracks and create a clean 720p musical video clip in Sony Vegas. I'll explain : The point is that Reaper creates a wav file of my songs. All saving processes only take very few seconds which indicates that no re-compression is going on. Again, the video is saved preserving every single bit/quality - only into another video container. Once you have the MKV output video you may simply quit and relaunch AVIDemux, open the MKV file and immediately re-save it, this time using the MP4 muxer. Only the video container format (interleaving order of video and audio segments) is varied. Quality remains exactly the same regardless of the muxer you choose. ![]() mp4, DO NOT use the MP4 muxer but the MKV muxer instead when you save the video. I realized that the app sometimes has trouble muxing using the same muxer than that of the input file format. In the "output format" drop-down menu choose a muxer. In the main program window, set "Video output" and "Audio output" to "Copy" (this activates lossles mode while saving). Audio streams (up to 4 stereo streams) may be added and individually time-shifted to optimize their sync with the video by clicking on the respective FILTERS button in the same dialog and activating the time-shift feature. Just drop the source video into the app and go to AUDIO -> select track. If you wanna losslessly remove, replace or add one or multiple audio streams in a video, use AVIDemux (supplied as a portable edition at ). Hope I understand exactly what you mean :) You wouldn't have to wade through forums to learn how to put this package together (it took me a few days). If you are interested, I could provide a zipped, portable, self-contained version of VirtualDub which is configured to open/save h.264 and a few other popular video formats. Therefore, grabbing one of the other apps might be the better solution depending on what kind of editing needs to be done. Reaper has no "smart rendering" video mode where it simply copies the video's source data into the output video file. With a few tweaks (not too intuitive to be frank), current version of VirtualDub is capable of opening and saving virtually any video format and as stated before, you can choose to preserve video and audio quality by setting both compression parameters to "Direct Stream Copy" mode. By choosing a lossless video codec while rendering in Reaper, the video data will get re-encoded and not just copied as it was - hence the large output file. This mode doesn't create larger files as data is only copied from the source file into the output file (perfectly preserving the original quality). Both VirtualDub and AVIDemux can be set to edit video losslessly (= preserving the original quality of video and audio editing mode labelled "Direct Stream copy" in VirtualDub). Depending on what I wanna accomplish, I'm using Reaper, VirtualDub or AVIDemux to edit videos. Sometimes, it's better to use other appications than Reaper to get a video editing job done, especially if you wanna preserve the original video and audio quality without ending up with huge output files. I think I havent fully understood what your issue is :) Could you please elaborate on this? Choosing Wave for audio will also preserve quality but will inevitably add considerably to a bigger file size. So you chose a lossles video codec during rendering in Reaper? This will obviously result in a fairly large video file whose quality should be more or less identical to that of the source video. ![]() So my question is : Is there a way to preserve both audio and video in one file ? And if possible to keep the weight of the file to a reasonable size? The problem is that when I put the 150MB MP4 video file in Reaper in order to get a video in witch audio is preserved and untouched, Reaper renders it as a huge 850MB AVI file, and I'm not even sure I'm not loosing some video quality. Reaper doesn't render MP4 files, and anyway it doesn't seem that an MP4 file can contain a pcm audio track. Vegas renders in the MP4 format with a compressed "aac" audio track. Video : ffv1(lossless) / Bit rate : 7 131 kb/s 1280*720Īudio : 24bit pcm / Bit rate : 2 304 kb/sīut of course I didn't create the video with Reaper but with Vegas. I managed to do it by using those settings on a 3 minutes song : ![]() Since my copy of Sony Vegas does a bad job with Audio by recklessly compressing it if not corrupting it, I'm currently working on rendering the videos of my songs with Reaper.
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