Re: Remux TV Progs to Matroska Video .mkv
Be careful. As others have said mp4 and mkv are container formats and this is what is associated with the extension. It's more important in the what can play the video decision. The compression (or not) comes from the codec, but again some codecs can do both compressed (lossy ) and uncompressed (lossless) Note also just to confuse folk, there is an MPEG4 codec, which I thought for a while was what mp4 used. Unfortunately none of this is simple and ultimately the only way I found to settle on what I wanted for my video collection was try a number of containers and compressions and evaluate which gave me the best overall result over many different types of film and tv program. (Plus side that took a few weeks with bottles of wine and the better half helping evaluate the results...) Then it was the case of what simplified the various sourcing processes and finally - compromise, which I think is where you're at here. To be honest, with the number of streaming services around these days I'm more selective and don't keep as many broadcast items as I used to. - It costs me less to subscribe to 3 or 4 services than it does to build and run a file server for a 10 year period. The added advantage is that many of the things I recorded in 1080 x 720 or whatever are now streamable in full HD and even with the bitrate that comes down the line to me it's better than my 10 year old recordings. For more info you could do worse than these two: raw info: https://en.wikipedia.org/wiki/Comparison_of_video_container_formats or for a more readable piece: https://www.makeuseof.com/tag/all-you-need-to-know-about-video-codecs-containers-and-compression/ On 10/07/2022 17:40, Computing wrote: Oh, I was lead to believe that .mp4 was a lossy format, where as .mkv is not. That is what I was trying to avoid Martin On 09/07/2022 23:01, David Cantrell wrote: As far as I know conversion to mp4 is just changing the container format, there’s no recompression. ___ get_iplayer mailing list get_iplayer@lists.infradead.org http://lists.infradead.org/mailman/listinfo/get_iplayer ___ get_iplayer mailing list get_iplayer@lists.infradead.org http://lists.infradead.org/mailman/listinfo/get_iplayer
Re: Remux TV Progs to Matroska Video .mkv
Hi, I just require 'standard' codec and bitrate, what ever they may be. I was trying to avoid the lossy conversion to .mp4, so would prefer going directly to .mkv, which is not lossy. Martin Please note, I'm away for the next week or so On 10/07/2022 13:00, Mr.G wrote: > Martin > If you included an example pid of a program that might help. As others have said TS (Transport Stream) ,MP4 and MKV are containers for audio and video formats. The codec and bitrate will determine the quality. > I tend to use H264 as H265 requires much more runtime CPU and things like my Fire stick won't play them reliably. I use MP3 for audio. > So what quality are you wishing to achieve That might be a good starting point then > > https://github.com/get-iplayer/get_iplayer/wiki/modes > > G. > > On Sat, 9 Jul 2022 at 22:45, Computing wrote: > > Hi, I'm trying to get programmes from the Beeb into .mkv format. > > I know you can do it by using --command-tv='ffmpeg -i "" -c:v > copy -c:a copy -y "/.mkv"' > > but it still downloads the raw .ts file, converts it to a .mp4, tags it, > then converts to a .mkv as required. > > Is there a way to do download .ts, convert to .mkv, tag .mkv?? I.E. > Avoid the mp4 lossy conversion?? > > Thanks loads > > Martin > > > ___ ___ get_iplayer mailing list get_iplayer@lists.infradead.org http://lists.infradead.org/mailman/listinfo/get_iplayer
Re: Remux TV Progs to Matroska Video .mkv
Oh, I was lead to believe that .mp4 was a lossy format, where as .mkv is not. That is what I was trying to avoid Martin On 09/07/2022 23:01, David Cantrell wrote: As far as I know conversion to mp4 is just changing the container format, there’s no recompression. ___ get_iplayer mailing list get_iplayer@lists.infradead.org http://lists.infradead.org/mailman/listinfo/get_iplayer
