On Thu, Mar 3, 2016 at 11:28 PM, compn <te...@mi.rr.com> wrote: > the mp4 format can either have an index at the start of the file or > at the end of the file. you cannot read (easily) an mp4 file without its > index. > > http://wiki.multimedia.cx/index.php?title=MP4 > > http servers can be made to support "request range" and thus allow > seeking to the start or end of the mp4 file. existing mp4 files can be > edited to have the index at the start or end. > > otherwise, mp4 cannot be streamed. by anyone, in any situation (well, > without serious hacks). the current way mp4 is "streamed" is to > split up mp4 files into a thousand smaller mp4 files and sent to a > player using a playlist. > > mp4 cannot be streamed. it sucks. > changing the http server would be easier than changing mp4 indexing. > or using an intermediate format would be easier (mkv perhaps).
Thanks for that clarification. Unfortunately the http server is a third party camera that broadcasts a WiFi hotspot. Therefore we don't really have control over the underlying server. However, what I do know is that the ffmpeg command I quoted previously seems to be able to grab a chunk of a video anywhere in the file without downloading the whole thing. So I assume libav must also be capable. Cheers, Jon. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
