fredgolightly Posted March 1, 2019 Share Posted March 1, 2019 Hi, Years ago I was asking about proper lossless mp4 and m2ts support for export in original formats. Now I see it supports lossless export in other formats, but still I am unable to simply edit together/cut two mp4 files from a Pixel 3 phone and save/export them losslessly without re-encoding, which isnt lossless. Will true lossless support ever happen? Link to comment Share on other sites More sharing options...
borate Posted March 1, 2019 Share Posted March 1, 2019 You have seen this no doubt... NCH Video Output Options - Lossless Export Settings Lossless export provides the highest quality video. It does this by re-encoding your video file only when required. Some editing functions require your video to be re-encoded on export. These include adding transitions, adding effects or exporting to a different file type than the original file. The following criteria must be met by the input/output videos for lossless export to be used: We currently support H.264 and MPEG4 encoder video sources. The output format must match the input format. Supported formats are .avi, .mkv, .mov, .mp4 The output and input must have the same dimensions, encoder profile, levels and extradata. Visual effects are not supported. Any segments of your video that include visual effects will be re-encoded. At least 10% of your sequence must meet the criteria for lossless editing. If less than 10% of the sequence meets the criteria, the entire sequence will be re-encoded during export. Link to comment Share on other sites More sharing options...
fredgolightly Posted March 13, 2019 Author Share Posted March 13, 2019 Yes I have. However, I'm still getting a whole lot of re-encoding happening. For example, I take two 10 second clips on my pixel 3 at 1080p 30fps, drop them into VideoPad, put them on the timeline next to each other, and export as lossless - the whole clip is now transcoded. What exactly am I supposed to do to get it working losslessly? Link to comment Share on other sites More sharing options...
borate Posted March 13, 2019 Share Posted March 13, 2019 Have you tested shooting at 29.97fps - the standard rate? Link to comment Share on other sites More sharing options...
fredgolightly Posted March 14, 2019 Author Share Posted March 14, 2019 It's all standard on pixel-30 it says but thinks its 29.something. Shouldn't matter though if lossless? Link to comment Share on other sites More sharing options...
borate Posted March 14, 2019 Share Posted March 14, 2019 Here, a 30fps single 10' video would not export as lossless. When converted it to standard NTSC 29.97fps lossless export worked instantly. Link to comment Share on other sites More sharing options...
fredgolightly Posted March 14, 2019 Author Share Posted March 14, 2019 So I have to manually reduce the 30fps to 29.97 (I'm in uk) for lossless to work? This can't be right Link to comment Share on other sites More sharing options...
borate Posted March 14, 2019 Share Posted March 14, 2019 Tested several other 30fps files, of varying resolutions and bit rates. They succeeded as lossless exports, so other factors are apparently in play here. Someone with better insight may chip in. Link to comment Share on other sites More sharing options...
fredgolightly Posted March 21, 2019 Author Share Posted March 21, 2019 On 3/14/2019 at 3:47 PM, borate said: Tested several other 30fps files, of varying resolutions and bit rates. They succeeded as lossless exports, so other factors are apparently in play here. Someone with better insight may chip in. Here's a sample clip from my Pixel 3 shooting 1080p 30.06fps (sorry it's in portrait only one I have to hand) https://drive.google.com/open?id=1Clid5gk6tmZuWvqwwih7ZBdcLJSejfEs I've tried joining this with itself say 3 times or editing out one second of video and I still can't get lossless export, it always transcodes despite trying every setting I can think of, uninstalling, resetting, etc. What am I doing wrong? Link to comment Share on other sites More sharing options...
borate Posted March 21, 2019 Share Posted March 21, 2019 You are doing nothing wrong. I'll wager that your file - apparently using the hvc1 codec - is not supported for lossless editing. Someone may drop in here to confirm. Link to comment Share on other sites More sharing options...
fredgolightly Posted March 21, 2019 Author Share Posted March 21, 2019 1 hour ago, borate said: You are doing nothing wrong. I'll wager that your file - apparently using the hvc1 codec - is not supported for lossless editing. Someone may drop in here to confirm. That's a good point. I've only turned hvc1 on recently but none of my old files work either, nor do my sisters nexus 5x mp4s which are avc I'd assume Link to comment Share on other sites More sharing options...
borate Posted March 21, 2019 Share Posted March 21, 2019 To see the details of those files, download the Mediainfo tool. Link to comment Share on other sites More sharing options...
fredgolightly Posted March 22, 2019 Author Share Posted March 22, 2019 Ok, so this is avc (non-hevc1). Would someone be able to have a go at either joing in together with itself 3 or so times or splitting it in half, losslessly. I just cannot get it working. https://drive.google.com/open?id=1KkSXtwHmrzeTWrBH_EG2ec_tMW7JYPAS Link to comment Share on other sites More sharing options...
fredgolightly Posted March 29, 2019 Author Share Posted March 29, 2019 Is anyone able to losslesly join or cut the above mp4 in Videopad? Link to comment Share on other sites More sharing options...
borate Posted March 29, 2019 Share Posted March 29, 2019 Tested here... 1. Exported the file as is 2. Chopped out a segment, deleted (ripple) 3. Chopped out two segments, deleted (ripple) All exported as lossless without a hitch, using VP 7.04 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now