Hi, > On Sep 14, 2015, at 11:56 PM, Etienne Desautels <etienne.desaut...@gmail.com> > wrote: > > Hi, > > I will start using FFV1 to archive video for a museum and I will like to know > what's the best settings to get smaller files. I will use version 3 with > checksums. From the few tests I did I found that those settings were the best > for smaller files: > - coder 1 > - context 0 > - g 1
I believe using -g 1 would require more size than not. On the other hand this is usually one of the parameters for ffv1 I recommend the most as it increases the resilience of the file which is particularly relevant for archival use. > - slices 4 > > I really don't know what to think about context size. Somewhere else I saw > that large context create smaller files. But in my tests that was the inverse. > > I also tried 2 pass without any success. The final file were exactly the same > size as the one created with 1 pass. And the log of the 2 pass was filled > only with 0 except for the last number that was something like 843? Can you show your process? Have you tried the directions according to the wiki? http://trac.ffmpeg.org/wiki/Encode/FFV1 If the file size is a bigger issue than the options used, you could examine the test suite results at http://download.das-werkstatt.com/pb/mthk/ffv1_stats/latest/ <http://download.das-werkstatt.com/pb/mthk/ffv1_stats/latest/>. The labels such as v3c01s4 document the version (3), coder (0), context (1), and slices (4). Best Regards, Dave Rice > Any advices? > > Regards, > Etienne Desautels > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user
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