Hello,
Ticket #9151
Applies to:
ffmpeg version N-101612-gda12d600ea Copyright (c) 2000-2021 the FFmpeg
developers
built with gcc 9 (Ubuntu 9.3.0-17ubuntu1~20.04)
Compiled ffmpeg to include libtesseract by adding --enable-libtesseract
to the configuration
Issue:
The current version of libavfilter/vf_ocr.c does not have white space in
the default white list.
But it is recommanded to include white space:
https://github.com/tesseract-ocr/tesseract/issues/2923
I attached a patch.
Dominic
>From d71df8748556269e14ce7fa2bb5a2f639ac05d4b Mon Sep 17 00:00:00 2001
From: Dominic Mayers <dominic.may...@meditationstudies.org>
Date: Thu, 18 Mar 2021 15:52:53 -0400
Subject: [PATCH] Added white space to white list of libtesseract.
---
libavfilter/vf_ocr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavfilter/vf_ocr.c b/libavfilter/vf_ocr.c
index d5f76059b7..c7ccb4a84f 100644
--- a/libavfilter/vf_ocr.c
+++ b/libavfilter/vf_ocr.c
@@ -43,7 +43,7 @@ typedef struct OCRContext {
static const AVOption ocr_options[] = {
{ "datapath", "set datapath", OFFSET(datapath), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
{ "language", "set language", OFFSET(language), AV_OPT_TYPE_STRING, {.str="eng"}, 0, 0, FLAGS },
- { "whitelist", "set character whitelist", OFFSET(whitelist), AV_OPT_TYPE_STRING, {.str="0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.:;,-+_!?\"'[]{}()<>|/\\=*&%$#@!~"}, 0, 0, FLAGS },
+ { "whitelist", "set character whitelist", OFFSET(whitelist), AV_OPT_TYPE_STRING, {.str="0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.:;,-+_!?\"'[]{}()<>|/\\=*&%$#@!~ "}, 0, 0, FLAGS },
{ "blacklist", "set character blacklist", OFFSET(blacklist), AV_OPT_TYPE_STRING, {.str=""}, 0, 0, FLAGS },
{ NULL }
};
--
2.25.1
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