howto100m | Code for the HowTo100M paper | Machine Learning library
kandi X-RAY | howto100m Summary
kandi X-RAY | howto100m Summary
This repo provides code from the HowTo100M paper. We provide implementation of:. More information about HowTo100M can be found on the project webpage:
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Top functions reviewed by kandi - BETA
- Evaluate text - video retrieval
- Compute R1 R1 R1 R1 R1 R1
- Print the computed metrics
- Parse arguments
- Train one batch
- Load checkpoint from file
- Save state to file
howto100m Key Features
howto100m Examples and Code Snippets
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QUESTION
When I try cutting a video, it outputs an empty stream (262 byte video with 0s duration). Would appreciate any insight, thanks.
Command used:
ffmpeg -i /path/to/long/video.mp4 -ss 37.69 -t 4.96 -c copy /path/to/short/video.mp4
However, when I the following (more inaccurate) command, it outputs a video. This video also has some problems, as the last frame is repeated several times, making the video one second longer (with a frozen image for one second).
ffmpeg -ss 37.69 -i /path/to/long/video.mp4 -t 4.96 -c copy /path/to/short/video.mp4
ffmpeg version: ffmpeg version 3.4.6-0ubuntu0.18.04.1
The outputs for the two commands are:
First command:
...ANSWER
Answered 2019-Dec-16 at 23:22Two issues:
3.4 is old. Update to a recent build before doing anything else. For Linux you can download or compile.
Cuts are not guaranteed to be accurate when using stream copy mode (
-c copy
) with H.264 and other similar formats because it will need to include all of the other frames necessary to decode the segment. So either cut on keyframes or re-encode by removing-c copy
.
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Install howto100m
You can use howto100m like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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