I downloaded version 2 for the fho lta (long term anticipation) challenge: features (slowfast) and annotations but in the features some videos are missing.
video uid = 44a173ba-e836-4efc-b485-e94d6bbafa8e
video uid = bedaa131-deae-4279-9fd4-5b6ab552644c
don’t have pre-extracted features.
Maybe others are missing but I did not check…
I tried also to download again the features but it says that I up to date with the server.
Can you check if it is only a problem on my side or not?
(PS metadata file does not download automatically if v1 metadata is already present in folder, as stated in doc)
Apologies for the missing features. I honestly forgot to extract them out for the release. I can get them for SlowFast within a couple of weeks (currently busy with a lot of items).
These videos are V1 videos, and therefore do have features extracted for them. For the new videos in V2, I have not exacted features for them, but the videos in FHO/LTA are not new V2 videos.
Unfortunately the metadata for FHO / LTA does not seem to cover all the video uids in the benchmark, hence why when downloading, you have some missing features.
I instead recommend downloading all the features. In other words, remove your
--benchmarks filter from the command line, i.e. run:
ego4d --output_directory=<out-directory> --datasets slowfast8x8_r101_k400
A couple of comments:
- I do recommend using omnivore video features. If you’re after performance, these are much better features for downstream tasks. Of course if you’re wanting to do an ablation study, ignore this comment.
- If you’re trying to save space, there are the FP16 omnivore video features available. I believe the total storage size of the FP16 features is around 75GB (don’t quote me on the exact number)
I hope that’s helpful and unblocks you.