# driving

## Description
We are given a strange video (.mp4) of a “banana driving a Car xD”.

## Solution

- On extracting the frames of the video using the frames per second rates of 30 fps we get 387 frames.

```
ffmpeg -i driving.mp4 -vf "fps=30" frame_%04d.png
```

- Also the Artist in the video’s metadata looks like a hint for the challenge.

```
$ exiftool driving.mp4
ExifTool Version Number : 12.40
File Name : driving.mp4
Directory : .
File Size : 2.2 MiB
File Modification Date/Time : 2025:02:01 14:06:53+05:30
File Access Date/Time : 2025:02:02 18:56:35+05:30
File Inode Change Date/Time : 2025:02:01 14:06:57+05:30
File Permissions : -rwxrwxrwx
File Type : MP4
File Type Extension : mp4
MIME Type : video/mp4
Major Brand : MP4 v2 [ISO 14496-14]
Minor Version : 0.0.0
Compatible Brands : mp42, mp41
Movie Header Version : 0
Create Date : 2025:01:12 15:35:52
Modify Date : 2025:01:12 15:35:52
Time Scale : 90000
Duration : 12.93 s
Preferred Rate : 1
Preferred Volume : 100.00%
Preview Time : 0 s
Preview Duration : 0 s
Poster Time : 0 s
Selection Time : 0 s
Selection Duration : 0 s
Current Time : 0 s
Next Track ID : 3
Track Header Version : 0
Track Create Date : 2025:01:12 15:35:52
Track Modify Date : 2025:01:12 15:35:52
Track ID : 1
Track Duration : 12.90 s
Track Layer : 0
Track Volume : 0.00%
Image Width : 640
Image Height : 480
Graphics Mode : srcCopy
Op Color : 0 0 0
Compressor ID : hvc1
Source Image Width : 640
Source Image Height : 480
X Resolution : 72
Y Resolution : 72
Compressor Name : HEVC Coding
Bit Depth : 24
Video Frame Rate : 30
Matrix Structure : 1 0 0 0 1 0 0 0 1
Media Header Version : 0
Media Create Date : 2025:01:12 15:35:52
Media Modify Date : 2025:01:12 15:35:52
Media Time Scale : 44100
Media Duration : 12.93 s
Media Language Code : eng
Balance : 0
Handler Description : Alias Data Handler
Audio Format : mp4a
Audio Channels : 2
Audio Bits Per Sample : 16
Audio Sample Rate : 44100
Handler Type : Metadata
XMP Toolkit : Image::ExifTool 13.00
Artist : 2+(10*n) for all n>=10
Media Data Size : 2271847
Media Data Offset : 12469
Image Size : 640x480
Megapixels : 0.307
Avg Bitrate : 1.41 Mbps
Rotation : 0
```

- Now on a simple inspection of the frames, one thing that catches our eye is the presence of `}` in the frame number 383 (indexing from 1).
- Then by the Artist hint on inspecting frames on intervals of 10 i.e the following frames, `[103,113,123,133,143,153,163,173,183,193,203,213,223,233,243,253,263,273,283,293,303,313,323,333,343,353,363,373,383]`
- we find that each of those frames contain one character of the flag in the following order, `Left Top → Right Top → Right Bottom → Left Bottom → Left Top…` , which leads us to our flag.

## Flag
`ENO{Y0U_4R3_DR1V1N6_M3_CR4ZY}`