package/ffmpeg-go
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add more examples

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wanglei.w
2021-07-11 18:12:30 +08:00
parent f057d20328
commit 78eb37f868
4 changed files with 104 additions and 8 deletions
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67
README.md
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@@ -2,8 +2,7 @@
ffmpeg-go is golang port of https://github.com/kkroening/ffmpeg-python
check ffmpeg_test.go for examples.
check examples/example_test.go and ffmpeg_test.go for more examples.
# Examples
@@ -21,6 +20,50 @@ err := Concat([]*Stream{
Run()
```
## Transcoding From One Codec To Another
```go
err := ffmpeg.Input("./sample_data/in1.mp4").
Output("./sample_data/out1.mp4", ffmpeg.KwArgs{"c:v": "libx265"}).
OverWriteOutput().ErrorToStdOut().Run()
```
## Cut Video From Timestamp
```go
err := ffmpeg.Input("./sample_data/in1.mp4", ffmpeg.KwArgs{"ss": 1}).
Output("./sample_data/out1.mp4", ffmpeg.KwArgs{"t": 1}).OverWriteOutput().Run()
assert.Nil(t, err)
```
## Add Watermark For Video
```go
// show watermark with size 64:-1 in the top left corner after seconds 1
overlay := ffmpeg.Input("./sample_data/overlay.png").Filter("scale", ffmpeg.Args{"64:-1"})
err := ffmpeg.Filter(
[]*ffmpeg.Stream{
ffmpeg.Input("./sample_data/in1.mp4"),
overlay,
}, "overlay", ffmpeg.Args{"10:10"}, ffmpeg.KwArgs{"enable": "gte(t,1)"}).
Output("./sample_data/out1.mp4").OverWriteOutput().ErrorToStdOut().Run()
```
result:
![img.png](./docs/example_overlay.png)
## Cut Video For Gif
```go
err := ffmpeg.Input("./sample_data/in1.mp4", ffmpeg.KwArgs{"ss": "1"}).
Output("./sample_data/out1.gif", ffmpeg.KwArgs{"s": "320x240", "pix_fmt": "rgb24", "t": "3", "r": "3"}).
OverWriteOutput().ErrorToStdOut().Run()
```
result:
![img.png](./docs/example_gif.gif)
## Task Frame From Video
```bash
@@ -51,8 +94,20 @@ result :
![image](./examples/sample_data/out1.jpeg)
## Get Multiple Output
## Show Ffmpeg Progress
```go
// get multiple output with different size/bitrate
input := ffmpeg.Input("./sample_data/in1.mp4").Split()
out1 := input.Get("0").Filter("scale", ffmpeg.Args{"1920:-1"}).
Output("./sample_data/1920.mp4", ffmpeg.KwArgs{"b:v": "5000k"})
out2 := input.Get("1").Filter("scale", ffmpeg.Args{"1280:-1"}).
Output("./sample_data/1280.mp4", ffmpeg.KwArgs{"b:v": "2800k"})
err := ffmpeg.MergeOutputs(out1, out2).OverWriteOutput().ErrorToStdOut().Run()
```
## Show FFmpeg Progress
see complete example at: [showProgress](./examples/showProgress.go)
@@ -85,13 +140,13 @@ progress: 1.00
progress: done
```
## Use Ffmpeg-go With Open-cv (gocv) For Face-detect
## Integrate FFmpeg-go With Open-CV (gocv) For Face-detect
see complete example at: [opencv](./examples/opencv.go)
result: ![image](./examples/sample_data/face-detect.jpg)
## Set cpu limit/request for ffmpeg-go
## Set Cpu limit/request For FFmpeg-go
```go
e := ComplexFilterExample("./sample_data/in1.mp4", "./sample_data/overlay.png", "./sample_data/out2.mp4")
@@ -109,7 +164,7 @@ PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1386105 root 20 0 2114152 273780 31672 R 50.2 1.7 0:16.79 ffmpeg
```
# View Graph
# View Progress Graph
function view generate [mermaid](https://mermaid-js.github.io/mermaid/#/) chart, which can be use in markdown or view [online](https://mermaid-js.github.io/mermaid-live-editor/)

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45
examples/example_test.go
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@@ -50,10 +50,51 @@ func TestSimpleS3StreamExample(t *testing.T) {
assert.Nil(t, err)
}
func TestExampleChangeCodec(t *testing.T) {
err := ffmpeg.Input("./sample_data/in1.mp4").
Output("./sample_data/out1.mp4", ffmpeg.KwArgs{"c:v": "libx265"}).
OverWriteOutput().ErrorToStdOut().Run()
assert.Nil(t, err)
}
func TestExampleCutVideo(t *testing.T) {
err := ffmpeg.Input("./sample_data/in1.mp4", ffmpeg.KwArgs{"ss": 1}).
Output("./sample_data/out1.mp4", ffmpeg.KwArgs{"t": 1}).OverWriteOutput().Run()
assert.Nil(t, err)
}
func TestExampleScaleVideo(t *testing.T) {
err := ffmpeg.Input("./sample_data/in1.mp4").
Output("./sample_data/out1.mp4", ffmpeg.KwArgs{"vf": "scale=w=480:h=240"}).
OverWriteOutput().ErrorToStdOut().Run()
assert.Nil(t, err)
}
func TestExampleAddWatermark(t *testing.T) {
// show watermark with size 64:-1 in the top left corner after seconds 1
overlay := ffmpeg.Input("./sample_data/overlay.png").Filter("scale", ffmpeg.Args{"64:-1"})
err := ffmpeg.Filter(
[]*ffmpeg.Stream{
ffmpeg.Input("./sample_data/in1.mp4"),
overlay,
}, "overlay", ffmpeg.Args{"10:10"}, ffmpeg.KwArgs{"enable": "gte(t,1)"}).
Output("./sample_data/out1.mp4").OverWriteOutput().ErrorToStdOut().Run()
assert.Nil(t, err)
}
func TestExampleCutVideoForGif(t *testing.T) {
err := ffmpeg.Input("./sample_data/in1.mp4", ffmpeg.KwArgs{"ss": "1"}).
Output("./sample_data/out1.gif", ffmpeg.KwArgs{"s": "320x240", "pix_fmt": "rgb24", "t": "3", "r": "3"}).
OverWriteOutput().ErrorToStdOut().Run()
assert.Nil(t, err)
}
func TestExampleMultipleOutput(t *testing.T) {
input := ffmpeg.Input("./sample_data/in1.mp4").Split()
out1 := input.Get("0").Filter("scale", ffmpeg.Args{"1920:-1"}).Output("./sample_data/1920.mp4", ffmpeg.KwArgs{"b:v": "5000k"})
out2 := input.Get("1").Filter("scale", ffmpeg.Args{"1280:-1"}).Output("./sample_data/1280.mp4", ffmpeg.KwArgs{"b:v": "2800k"})
out1 := input.Get("0").Filter("scale", ffmpeg.Args{"1920:-1"}).
Output("./sample_data/1920.mp4", ffmpeg.KwArgs{"b:v": "5000k"})
out2 := input.Get("1").Filter("scale", ffmpeg.Args{"1280:-1"}).
Output("./sample_data/1280.mp4", ffmpeg.KwArgs{"b:v": "2800k"})
err := ffmpeg.MergeOutputs(out1, out2).OverWriteOutput().ErrorToStdOut().Run()
assert.Nil(t, err)