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Add sample index codec; fix schema doc.

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Scott Lamb
2016-01-05 11:01:36 -08:00
parent 23ba5e0049
commit 60988f0646
5 changed files with 395 additions and 11 deletions
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22
design/schema.md
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@@ -70,13 +70,15 @@ The table below shows cost of processing a single stream, as a percentage of the
whole processor ((user+sys) time / video duration / CPU cores). **TODO:** try
different quality settings as well.
Decode:
$ time ffmpeg -y -threads 1 -i input.mp4 \
-f null /dev/null
Decode:
Combo (Decode + encode with libx264):
$ time ffmpeg -y -threads 1 -i input.mp4 \
-c:v libx264 -preset ultrafast -threads 1 -f mp4 /dev/null
$ time ffmpeg -y -threads 1 -i input.mp4 \
-f null /dev/null
Combo (Decode + encode with libx264):
$ time ffmpeg -y -threads 1 -i input.mp4 \
-c:v libx264 -preset ultrafast -threads 1 -f mp4 /dev/null
| Processor | 1080p30 decode | 1080p30 combo | 704x480p10 decode | 704x480p10 combo |
@@ -483,11 +485,11 @@ See also the example below:
| bytes | 1000 | 10 | 15 | 12 | 1050 |
| duration\_delta | 10 | -1 | 2 | -1 | 0 |
| bytes\_delta | 1000 | 10 | 5 | -3 | 50 |
| varint1 | 42 | 3 | 8 | 3 | 1 |
| varint2 | 2000 | 20 | 10 | 5 | 2 |
| encoded | `2a d0 0f` | `03 14` | `08 0a` | `03 05` | `01 02` |
| varint1 | 41 | 2 | 8 | 3 | 1 |
| varint2 | 2000 | 20 | 10 | 5 | 100 |
| encoded | `29 d0 0f` | `02 14` | `08 0a` | `02 05` | `01 64` |
### <a href="on-demand"></a> On-demand `.mp4` construction
### <a href="on-demand"></a>On-demand `.mp4` construction
A major goal of this format is to support on-demand serving in various formats,
including two types of `.mp4` files: