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2 ======== |
2 ======== |
3 ffmpeg |
3 ffmpeg |
4 ======== |
4 ======== |
5 .. contents:: |
5 .. contents:: |
6 :local: |
6 :local: |
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7 |
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8 Docs |
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9 ==== |
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10 |
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11 https://ffmpeg.org/documentation.html |
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12 Docs index. |
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13 http://ffmpeg.org/ffmpeg-all.html |
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14 Common options. |
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15 https://ffmpeg.org/faq.html |
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16 FAQ. |
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17 https://ffmpeg.org/ffmpeg.html |
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18 Syntax overview. |
7 |
19 |
8 Print supported options |
20 Print supported options |
9 ======================= |
21 ======================= |
10 |
22 |
11 Supported decoders/encoders:: |
23 Supported decoders/encoders:: |
14 |
26 |
15 Pixel formats:: |
27 Pixel formats:: |
16 |
28 |
17 ffmpeg -pix_fmts |
29 ffmpeg -pix_fmts |
18 |
30 |
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31 Limiting bit rate |
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32 ================= |
19 |
33 |
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34 ``-maxrate`` should be accompanied with ``-bufsize`` option like:: |
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35 |
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36 -maxrate 800k -bufsize 1200k |
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37 |
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38 otherwise you'll get warning: |
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39 |
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40 > VBV maxrate specified, but no bufsize, ignored |
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41 |
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42 ``-b:v RATE`` allows to specify average bitrate for video. |
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43 |
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44 To specify video stream use syntax like:: |
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45 |
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46 -c:v:0 libx264 -b:v:0 2000k -maxrate:v:0 2200k -bufsize:v:0 3000k |
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47 |
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48 https://trac.ffmpeg.org/wiki/Limiting%20the%20output%20bitrate |
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49 Limiting the output bitrate. |
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50 https://trac.ffmpeg.org/wiki/EncodingForStreamingSites |
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51 Encoding for streaming sites. |
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52 |
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53 H.264 |
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54 ===== |
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55 |
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56 https://trac.ffmpeg.org/wiki/Encode/H.264 |