Let’s take a look at the playlist and see how it compares: #EXTM3U You’ll need all of these files when you come to play the video. The above command will generate the following files: the playlist file ( prog_index.m3u8), a number of files with the extension. To generate fMP4 files instead of MPEG-TS, which is the default, set the segment type to fmp4 (highlighted). hls_segment_filename "fileSequence%d.m4s" \
force_key_frames "expr:gte(t,n_forced*2)" \ Open up a terminal and run the following command: ffmpeg -y \ We’ll alter the size to 1280×720 and reduce the video bitrate but leave the audio as it is. Let’s take the original video ( sintel_trailer-1080p.mp4) and re-encode it. You’ll need a fairly recent version of ffmpeg that supports fMP4 – I used version 4.1.1 to create the files in this post.įor the video, I used the 1080p version of the Sintel trailer. In this post, I’ll demonstrate how to generate fMP4 files using ffmpeg. This means less encoding and less storage requirements, which should reduce costs. Fragmented MP4 files are also compatible with MPEG-DASH – an alternative to HLS – so you can use the same files only the manifest file (playlist) is different. So why use fragmented MP4 files? Well, according to Apple’s video encoding requirements in their HLS Authoring Specification, if you want to use HEVC/H.265, you have to use it (1.5). So we believe it deserves to be the best YouTube multi-video downloader and definitely worth your try.At WWDC 2016, Apple announced support for fragmented MP4 (fMP4) as an alternative to MPEG-TS, which prior to their announcement was the only supported format. What’s more, it delivers more stable and solid performance in our test of downloading YouTube playlists. Second, it has way more features than the online counterparts. First of all, it is completely void of ads or any hidden buttons so you don’t have to worry about any safety issues. The desktop playlist downloader, however, is just the contrary. Hence we don’t think they are safe and reliable enough to win our trust. Plus, almost all the online downloader sites are full of ads and misleading buttons. It can only download up to 21 videos at a time, which is a turn-off for many users.
The reason why we don’t recommend the online free YouTube playlist video downloaders is that all of the online downloaders are subject to all kinds of limitations. However, if we are to choose the best out of the best, we would stick to the desktop WonderFox Free HD Video Converter Factory. And all of them work perfectly with public playlists. That’s all the five best free YouTube playlist downloaders we have picked for you.
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