<p><code>-b:v</code> is <strong>bit</strong>rate, so <code>10000</code> is <code>10 kbps</code>. You probably want <code>10000k</code>.</p>

CC BY-SA 4.0
2023-05-17T20:14:25.330Z
Thanks ! I was used to AV1 with QSV that had the bitrate in Kilobits by default
Lucas Soreau
CC BY-SA 4.0
2023-05-17T04:01:40.460Z
2023-05-17T04:01:40.460Z
Gyan
<p>I'm fairly new to FFmpeg, I'm using this command: ffmpeg -i &quot;C:\FFmpeg\Handbrake\Trackmania\Trackmania.mp4&quot; -c:v libx264 -preset veryslow -b:v 10000  -fps_mode passthrough &quot;C:\FFmpeg\Handbrake\Trackmania\Compressed\AV1\QSV VERYSLOW.mp4&quot;, but FFmpeg is actually encoding at around 300kbps, which result in a horrible video quality. I've tried changing the bitrate, but this doesn't fix the issue</p>

<ffmpeg><h.264><bitrate>
FFmpeg is encoding at a lower bitrate than what is specified
Lucas Soreau
# FFmpeg is encoding at a lower bitrate than what is specified

(Asked by: username_0 on 2023-05-16)

I'm fairly new to FFmpeg, I'm using this command: ffmpeg -i "C:\FFmpeg\Handbrake\Trackmania\Trackmania.mp4" -c:v libx264 -preset veryslow -b:v 10000 -fps\_mode passthrough "C:\FFmpeg\Handbrake\Trackmania\Compressed\AV1\QSV VERYSLOW.mp4", but FFmpeg is actually encoding at around 300kbps, which result in a horrible video quality. I've tried changing the bitrate, but this doesn't fix the issue

**Tags:** ffmpeg, h.264, bitrate


---

## 1 answers

### Answer by username_1 on 2023-05-17. Score: 0 | Accepted answer

`-b:v` is **bit**rate, so `10000` is `10 kbps`. You probably want `10000k`.

> **Comments:**
> **username_0**: Thanks ! I was used to AV1 with QSV that had the bitrate in Kilobits by default  

---

