On Mon, 30 Sep 2024 09:49:34 +0530, Gyan Doshi <ffm...@gyani.pro> wrote:
> > >On 2024-09-30 01:29 am, Bo Berglund wrote: >> I have created a script that downloads Internet video streams (basically news >> programs) and transcodes to mp4 format with a fixed windows size. >> As soon as the video stream recording ends the mp4 file can be played. >> >> I wonder if there is a way to let ffmpeg do two things at the same time: >> - download as now but save the stream to a TS formatted file and: >> - transcode to the mp4 format into a different output file >> >> This would make it possible to start viewing the downloaded file in TS format >> while the real output file remains unplayable until the download finishes and >> the moov atom gets written. > >Three months ago, ffmpeg's mov/mp4 muxer added a movflags called >`hybrid_fragmented` > > From the doc description, > >" >For recoverability - write the output file as a fragmented file. This >allows the intermediate file to be read while being written (in >particular, if the writing process is aborted uncleanly). When writing >is finished, the file is converted to a regular, non-fragmented file, >which is more compatible and allows easier and quicker seeking. > >If writing is aborted, the intermediate file can manually be remuxed to >get a regular, non-fragmented file of what had been written into the >unfinished file. >" Sounds like what I have been looking for all along! Could you provide the ffmpeg version where this is available? Unfortunately, this is what I get when checking versions on my main Ubuntu 20.04.6 LTS server box where the downloads happen: $ apt policy ffmpeg ffmpeg: Installed: 7:4.3.2-0york0~18.04 Candidate: 7:4.3.2-0york0~18.04 I guess version 7:4.3.2 is not good enough, so how can I upgrade on my Ubuntu 20.04.6 LTS box? On another Linux laptop running Ubuntu 22.04.5 LTS I get this: $ apt policy ffmpeg ffmpeg: Installed: 7:4.4.2-0ubuntu0.22.04.1+esm5 Candidate: 7:4.4.2-0ubuntu0.22.04.1+esm5 And on a Linux-Mint desktop I have an even older vcersion: $ apt policy ffmpeg ffmpeg: Installed: 7:4.2.7-0ubuntu0.1 Candidate: 7:4.2.7-0ubuntu0.1 Lastly on a Raspberry-Pi5 box I have: $ apt policy ffmpeg ffmpeg: Installed: 8:5.1.5-0+rpt1+deb12u1 Candidate: 8:5.1.6-0+deb12u1+rpt1 Here I see the main version stepped up to 8! Does this version contain the wanted feature? However, download on this box is a bit iffy in general, probably because of the RPi5 being a less capable device... The other servers are on Lenovo or HP hardware... Basic install question on Linux: If one wants to get to the latest version of ffmpeg and it is not provided by the Linux distribution used, how can one upgrade to it? -- Bo Berglund Developer in Sweden _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
