yt-dlp -f 134+140 [URL] combines the 134 video with the standard 128k M4A audio stream. Summary Table: Format 134 vs. Peers Format Code Resolution Stream Type 133 Video Only 134 360p H.264 Video Only 135 Video Only 243 Video Only (WebM)
When a video is uploaded to a major platform, it is transcoded into multiple "format codes" to support Dynamic Adaptive Streaming over HTTP (DASH). Format 134 is a standardized identifier for a specific set of technical specifications:
Typically 640x360 or 480x360, commonly known as 360p . Codec: Uses AVC1 (H.264) , specifically profile avc1.4d401e . 134 mp4
yt-dlp -f 134 [URL] will fetch the 360p video-only file.
In an era of 4K and 8K, 360p might feel like a relic, but it remains critical for several reasons: yt-dlp -f 134+140 [URL] combines the 134 video
The H.264 codec used in format 134 is supported by almost every digital device manufactured in the last 15 years, from old smart TVs to budget smartphones.
Here is a deep dive into the technical significance, role, and practical use of Format 134 in modern video engineering. The Anatomy of Format 134 Format 134 is a standardized identifier for a
Developers and archivists often target specific formats to save bandwidth or ensure compatibility. If you are using command-line tools like yt-dlp , you can specifically call for this format: