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WebVTT: Support config the font style. #193

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WebVTT: Support config the font style. #193

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7620476
Transcript: Support webvtt style setting
limjoe Jun 17, 2024
ed070fa
Transcript: Add webvtt style default setting
limjoe Jun 17, 2024
bd3592c
Transcript: WebVTT Cue setting code format
limjoe Jun 21, 2024
257d623
Transcript: update webvtt style default setting
limjoe Jun 24, 2024
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20 changes: 17 additions & 3 deletions platform/transcript.go
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Original file line number Diff line number Diff line change
Expand Up @@ -760,13 +760,23 @@ func (v *TranscriptWorker) Handle(ctx context.Context, handler *http.ServeMux) e

var vttBody strings.Builder
vttBody.WriteString(fmt.Sprintf("WEBVTT\n\n"))
// Insert the CSS rules into the WebVTT file to set the cue style
// But the color setting only takes effect in Safari browser
if v.task.config.WebVTTCueStyle != "" {
vttBody.WriteString(fmt.Sprintf("%s", v.task.config.WebVTTCueStyle))
vttBody.WriteString(fmt.Sprintf("\n\n"))
}
for _, as := range segment.AsrText.Segments {
s := segment.StreamStarttime + time.Duration(as.Start*float64(time.Second))
e := segment.StreamStarttime + time.Duration(as.End*float64(time.Second))
vttBody.WriteString(fmt.Sprintf("%02d:%02d:%02d.%03d --> ",
int(s.Hours()), int(s.Minutes())%60, int(s.Seconds())%60, int(s.Milliseconds())%1000))
vttBody.WriteString(fmt.Sprintf("%02d:%02d:%02d.%03d\n",
vttBody.WriteString(fmt.Sprintf("%02d:%02d:%02d.%03d",
int(e.Hours()), int(e.Minutes())%60, int(e.Seconds())%60, int(e.Milliseconds())%1000))
if v.task.config.WebVTTCueSetting != "" {
vttBody.WriteString(fmt.Sprintf(" %s", v.task.config.WebVTTCueSetting))
}
vttBody.WriteString("\n")
vttBody.WriteString(fmt.Sprintf("%v\n\n", as.Text))
}

Expand Down Expand Up @@ -1219,6 +1229,10 @@ type TranscriptConfig struct {
EnableOverlay bool `json:"overlayEnabled"`
// Whether enable WebVTT subtitle.
EnableWebVTT bool `json:"webvttEnabled"`
// WebVTT CUE style
WebVTTCueStyle string `json:"webvttCueStyle"`
// WebVTT CUE Setting
WebVTTCueSetting string `json:"webvttCueSetting"`
}

func NewTranscriptConfig() *TranscriptConfig {
Expand All @@ -1228,9 +1242,9 @@ func NewTranscriptConfig() *TranscriptConfig {
}

func (v TranscriptConfig) String() string {
return fmt.Sprintf("all=%v, key=%vB, organization=%v, base=%v, lang=%v, overlay=%v, forceStyle=%v, videoCodecParams=%v, webvtt=%v",
return fmt.Sprintf("all=%v, key=%vB, organization=%v, base=%v, lang=%v, overlay=%v, forceStyle=%v, videoCodecParams=%v, webvtt=%v, webvttCueStyle=%v, webvttCueSetting=%v",
v.All, len(v.SecretKey), v.Organization, v.BaseURL, v.Language, v.EnableOverlay, v.ForceStyle,
v.VideoCodecParams, v.EnableWebVTT)
v.VideoCodecParams, v.EnableWebVTT, v.WebVTTCueStyle, v.WebVTTCueSetting)
}

func (v *TranscriptConfig) Load(ctx context.Context) error {
Expand Down
19 changes: 18 additions & 1 deletion ui/src/pages/ScenarioTranscript.js
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,8 @@ function ScenarioTranscriptImpl({activeKey, defaultEnabled, defaultConf, default
const [videoCodecParams, setVideoCodecParams] = React.useState(defaultConf.videoCodecParams || '-c:v libx264 -profile:v main -preset:v medium -tune zerolatency -bf 0');
const [overlayEnabled, setOverlayEnabled] = React.useState(defaultConf.overlayEnabled);
const [webvttEnabled, setWebvttEnabled] = React.useState(defaultConf.webvttEnabled);
const [webvttCueSetting, setWebvttCueSetting] = React.useState(defaultConf.webvttCueSetting || 'line:80% align:start');
const [webvttCueStyle, setWebvttCueStyle] = React.useState(defaultConf.webvttCueStyle || 'STYLE\n::cue { background-color: blue; color: red; font-size: 18px; }');

const [liveQueue, setLiveQueue] = React.useState();
const [asrQueue, setAsrQueue] = React.useState();
Expand Down Expand Up @@ -100,14 +102,15 @@ function ScenarioTranscriptImpl({activeKey, defaultEnabled, defaultConf, default
uuid, all: !!enabled, secretKey, organization, baseURL, lang: targetLanguage,
overlayEnabled: !!overlayEnabled, forceStyle, videoCodecParams,
webvttEnabled: !!webvttEnabled,
webvttCueStyle, webvttCueSetting
}, {
headers: Token.loadBearerHeader(),
}).then(res => {
alert(t('helper.setOk'));
console.log(`Transcript: Apply config ok, uuid=${uuid}.`);
success && success();
}).catch(handleError);
}, [t, handleError, secretKey, baseURL, targetLanguage, overlayEnabled, forceStyle, videoCodecParams, webvttEnabled, uuid, organization]);
}, [t, handleError, secretKey, baseURL, targetLanguage, overlayEnabled, forceStyle, videoCodecParams, webvttEnabled, uuid, organization, webvttCueStyle, webvttCueSetting]);

const resetTask = React.useCallback(() => {
setOperating(true);
Expand Down Expand Up @@ -365,6 +368,20 @@ function ScenarioTranscriptImpl({activeKey, defaultEnabled, defaultConf, default
<Form.Check type="checkbox" label={t('transcript.vtt2')} defaultChecked={webvttEnabled} onClick={() => setWebvttEnabled(!webvttEnabled)} />
</Form.Group>
</Form.Group>
<Form.Group className="mb-3">
<Form.Label>{t('transcript.vttcuesettings')}</Form.Label>
<Form.Text> * {t('transcript.vttcuesettings1')}. &nbsp;
{t('helper.see')} <a href={t('transcript.vtthref2')} target='_blank' rel='noreferrer'>WebVTT Cues Settings</a>.
</Form.Text>
<Form.Control as="input" defaultValue={webvttCueSetting} onChange={(e) => setWebvttCueSetting(e.target.value)} />
</Form.Group>
<Form.Group className="mb-3">
<Form.Label>{t('transcript.vttstyle')}</Form.Label>
<Form.Text> * {t('transcript.vttstyle1')}. &nbsp;
{t('helper.see')} <a href={t('transcript.vtthref1')} target='_blank' rel='noreferrer'>WebVTT Cues Style</a>.
</Form.Text>
<Form.Control as="textarea" defaultValue={webvttCueStyle} onChange={(e) => setWebvttCueStyle(e.target.value)} />
</Form.Group>
</Card.Body>}
</Card>
<p></p>
Expand Down
12 changes: 12 additions & 0 deletions ui/src/resources/locale.json
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Original file line number Diff line number Diff line change
Expand Up @@ -386,6 +386,12 @@
"pvtt": "预览WebVTT字幕",
"vtt2": "是否开启WebVTT字幕",
"vtt": "WebVTT字幕",
"vttstyle":"WebVTT Cue 字幕样式",
"vttstyle1":"配置 WebVTT Cue 字幕样式",
"vttcuesettings": "WebVTT Cue 设置",
"vttcuesettings1": "配置 WebVTT Cue",
"vtthref1": "https://developer.mozilla.org/zh-CN/docs/Web/API/WebVTT_API#%E5%9C%A8_webvtt_%E6%96%87%E4%BB%B6%E8%87%AA%E8%BA%AB%E4%B8%AD%E5%AE%9A%E4%B9%89%E6%A0%B7%E5%BC%8F",
"vtthref2": "https://developer.mozilla.org/zh-CN/docs/Web/API/WebVTT_API#cue_%E8%AE%BE%E7%BD%AE",
"ole":"是否开启视频叠加字幕",
"trans2": "https://ossrs.net/lts/zh-cn/faq-oryx#how-to-setup-the-video-codec-parameters-for-ai-transcript",
"trans1": "自定义视频转码参数",
Expand Down Expand Up @@ -884,6 +890,12 @@
"pvtt": "Preview live stream with WebVTT",
"vtt2": "Enable WebVTT subtitle",
"vtt": "WebVTT Subtitle",
"vttstyle":"WebVTT Cue Style",
"vttstyle1":"Style of WebVTT Cues",
"vttcuesettings": "WebVTT Cue Settings",
"vttcuesettings1": "WebVTT Cue Settings",
"vtthref1": "https://developer.mozilla.org/en-US/docs/Web/API/WebVTT_API#within_the_webvtt_file_itself",
"vtthref2": "https://developer.mozilla.org/en-US/docs/Web/API/WebVTT_API#webvtt_cues",
"ole": "Enable video overlay subtitle",
"trans2": "https://ossrs.io/lts/en-us/faq-oryx#how-to-setup-the-video-codec-parameters-for-ai-transcript",
"trans1": "Customize video transcode parameters",
Expand Down
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