From: Rogério Brito Date: Fri, 25 Oct 2013 03:32:08 +0000 (-0200) Subject: debian/NEWS: Update with notes about split audio/video downloads. X-Git-Url: https://git.rapsys.eu/youtubedl/commitdiff_plain/a3df54c98511f5038b0a4c959f87a1220198e076?ds=sidebyside;hp=-c debian/NEWS: Update with notes about split audio/video downloads. --- a3df54c98511f5038b0a4c959f87a1220198e076 diff --git a/debian/NEWS b/debian/NEWS index a82cd57..fe8adda 100644 --- a/debian/NEWS +++ b/debian/NEWS @@ -1,3 +1,62 @@ +youtube-dl (2013.10.23-1) unstable; urgency=low + + From http://cynic.cc/blog/posts/2013-10-23-assorted_news/: + + [13]Some people may have noticed, others may not, but when downloading + videos from Youtube, they apparently are getting more aggressive with + the use of [14]Dynamic Adaptive Streaming over HTTP (also called DASH) + and, as a result, some (perhaps going to be all in the near future?) of + the videos may not be available in the resolution/formats that you used + to like (like me, with format number 35). + + By the way, one thing that is interesting with youtube videos provided + via DASH is that they are available in different streams: one for the + video and another for the audio. + + What does this mean in practical terms for users of youtube-dl? Well, + if you wanted to download videos in resolutions like the 480p (format + 35) that I mentioned, then you will probably have to change your way of + doing things, until a more automated solution is in place. + + You will have to download both the audio and the video and, then, + "combine" them (that is, multiplex them) to create one "normal" video + file with both the audio and the video. I usually do this via: + + ffmpeg -i audio.m4a -i video.mp4 -vcodec copy -acodec copy combined.mp4 + + If you prefer having a Matroska container instead of an mp4 container + (which, BTW, results in smaller muxing overhead), then you can use the + command line: + + mkvmerge -o combined.mkv audio.m4a video.mp4 + + Oh, those m4a and mp4 extensions are a new addition that [15]I just + sent upstream (in the past, both would have been named with an + extension of mp4). + + As, an aside, I like formats 135 for video and 140 for audio, for the + reasons that I mentioned in a comments to issue 1612: + + Otherwise, to download 480p videos (which I do for lectures and so + on with other projects of mine, like edx-dl) I have to call + youtube-dl twice: once for format 135 and another for format 140, + since the old (?) format 35 files are much smaller than the lower + resolution 360p files (due to the former being encoded in High + profile vs. the latter being encoded in Constrained Baseline + profile). + + While this is unfortunate for some, this is a good thing for others: I + once had a blind user of youtube-dl asking me if he could avoid + downloading the whole video just to extract the audio, so that he save + on bandwidth. Well, now this is possible. + + + 13. https://github.com/rg3/youtube-dl/issues/1612 + 14. https://en.wikipedia.org/wiki/Dynamic%20Adaptive%20Streaming%20over%20HTTP + 15. https://github.com/rg3/youtube-dl/pull/1622 + + -- Rogério Brito Fri, 25 Oct 2013 01:25:41 -0200 + youtube-dl (2010.07.22-1) unstable; urgency=medium The upstream author has removed support for the -b ("best format") and