https://blog.lazy-evaluation.net/enContents © 2025 <a href="mailto:dzu@member.fsf.org">Detlev Zundel</a> Wed, 10 Dec 2025 16:16:36 GMTNikola (getnikola.com)http://blogs.law.harvard.edu/tech/rsshttps://blog.lazy-evaluation.net/posts/linux/linux-vaapi.html?pk_campaign=feedDetlev Zundel<div><div style="text-align:center" class="imageblock" id="orgb87bd39"> <div id="orge49046a" class="figure"> <p><img src="https://blog.lazy-evaluation.net/images/movie-reel-clipart-transp.png" alt="movie-reel-clipart-transp.png" title="Movie Reel Clipart https://clipart-library.com/clipart/528185.htm" align="middle" width="200"> </p> </div> </div> <p> Thinking about the significant amount of disk space that movies are using, I decided to revisit evaluating the question of transcoding them for archival purposes. I was also interested to see how much of the processing of movie files can be done in dedicated hardware instead of hogging the main CPU. Using an <a href="https://www.amd.com/en/support/apu/amd-ryzen-processors/amd-ryzen-5-desktop-processors-radeon-vega-graphics/amd-ryzen-5-0">AMD Ryzen-2400G</a> based desktop machine I decided to find out if there is dedicated hardware that I can use from the standard GNU/Linux applications for movies. In hindsight, I would never have expected to spend so much time on this post, but then again I now have a better understanding of many concepts in this area. Hopefully you can also profit, my dear reader. </p> <p><a href="https://blog.lazy-evaluation.net/posts/linux/linux-vaapi.html?pk_campaign=feed">Read more…</a> (27 min remaining to read)</p></div>commandlineffmpeggstreamerlinuxlinux-kernelmpvvaapihttps://blog.lazy-evaluation.net/posts/linux/linux-vaapi.htmlFri, 29 Dec 2023 23:19:58 GMThttps://blog.lazy-evaluation.net/posts/metadata-ffmpeg.html?pk_campaign=feedDetlev Zundel<div><div style="text-align:center" class="imageblock" id="org5203296"> <div id="org779a69c" class="figure"> <p><img src="https://blog.lazy-evaluation.net/images/ffmpeg-logo.png" alt="ffmpeg-logo.png" title="Big lock" align="middle" width="150"> </p> </div> </div> <p> The <a href="https://www.ffmpeg.org/">FFmpeg</a> suite of multimedia tools is a very powerful toolkit, but sometimes its default behavior just plain surprises me. While I am totally impressed by its capability to stabilize videos taken by my mobile phone, it took me some time to realize that this processing step lost all the metadata. Of course, I did not expect this, and it is trivial to fix the script, but first you need to be aware that the problem even exists. </p> <p><a href="https://blog.lazy-evaluation.net/posts/metadata-ffmpeg.html?pk_campaign=feed">Read more…</a> (5 min remaining to read)</p></div>deshakeexiftoolffmpegmetadatahttps://blog.lazy-evaluation.net/posts/metadata-ffmpeg.htmlSat, 11 Nov 2023 14:54:58 GMT