Subtitle - The.birds.1963.576p.bluray.ac3.x264-gcjm

This is the video compression codec used. It is a very popular method for shrinking high-definition video into a smaller file size without losing much quality.

This is the title and release year of the classic Alfred Hitchcock thriller. subtitle The.Birds.1963.576p.Bluray.AC3.x264-GCJM

This refers to the vertical resolution. While it is higher than standard DVD (480p), it is considered "Standard Definition" or "Enhanced Definition" by modern Blu-ray standards (which are usually 1080p). This is the video compression codec used

If you are looking for the to go with this movie, you can usually find it on popular subtitle databases. Just make sure the subtitle name matches the movie name closely to ensure the timing stays synced. This refers to the vertical resolution

This is the audio format, also known as Dolby Digital. It's a common format for providing surround sound.