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avfilter/af_whisper: fix broken output for multibyte character

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text + 1 can break a multibyte character, e.g., Chinese in UTF-8.
There is no space at the beginning in this case.

(cherry picked from commit 1d06e8ddcd)
This commit is contained in:
Zhao Zhili
2025-08-15 20:39:49 +08:00
parent d1f31a829d
commit bb65f51fce
1 changed files with 3 additions and 1 deletions
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libavfilter/af_whisper.c
+3 -1
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@@ -215,7 +215,9 @@ static void run_transcription(AVFilterContext *ctx, AVFrame *frame, int samples)
for (int i = 0; i < n_segments; ++i) {
const char *text = whisper_full_get_segment_text(wctx->ctx_wsp, i);
char *text_cleaned = av_strireplace(text + 1, "[BLANK_AUDIO]", "");
if (av_isspace(text[0]))
text++;
char *text_cleaned = av_strireplace(text, "[BLANK_AUDIO]", "");
if (av_strnlen(text_cleaned, 1) == 0) {
av_freep(&text_cleaned);