From patchwork Thu Mar 4 18:48:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Niedermayer X-Patchwork-Id: 26105 Return-Path: X-Original-To: patchwork@ffaux-bg.ffmpeg.org Delivered-To: patchwork@ffaux-bg.ffmpeg.org Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by ffaux.localdomain (Postfix) with ESMTP id E04F744B9EB for ; Thu, 4 Mar 2021 20:55:02 +0200 (EET) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id C963B68AC06; Thu, 4 Mar 2021 20:55:02 +0200 (EET) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from vie01a-dmta-pe01-1.mx.upcmail.net (vie01a-dmta-pe01-1.mx.upcmail.net [62.179.121.154]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id C1B026809EB for ; Thu, 4 Mar 2021 20:54:55 +0200 (EET) Received: from [172.31.216.235] (helo=vie01a-pemc-psmtp-pe12.mail.upcmail.net) by vie01a-dmta-pe01.mx.upcmail.net with esmtp (Exim 4.92) (envelope-from ) id 1lHt2a-000AEk-0Y for ffmpeg-devel@ffmpeg.org; Thu, 04 Mar 2021 19:49:40 +0100 Received: from localhost ([213.47.68.29]) by vie01a-pemc-psmtp-pe12.mail.upcmail.net with ESMTP id Ht1cldPD7ljeHHt1clC5F0; Thu, 04 Mar 2021 19:48:40 +0100 X-Env-Mailfrom: michael@niedermayer.cc X-Env-Rcptto: ffmpeg-devel@ffmpeg.org X-SourceIP: 213.47.68.29 X-CNFS-Analysis: v=2.3 cv=BoHjPrf5 c=1 sm=1 tr=0 a=2hcxjKEKjp0CzLx6oWAm4g==:117 a=2hcxjKEKjp0CzLx6oWAm4g==:17 a=MKtGQD3n3ToA:10 a=1oJP67jkp3AA:10 a=GEAsPZ9sns4A:10 a=ZZnuYtJkoWoA:10 a=nZOtpAppAAAA:20 a=RrG2Gc8TFyVvYQo2e-oA:9 a=1fhp2MxaeJtTNGEnv6mo:22 a=BPzZvq435JnGatEyYwdK:22 a=Z5ABNNGmrOfJ6cZ5bIyy:22 a=UDnyf2zBuKT2w-IlGP_r:22 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Thu, 4 Mar 2021 19:48:35 +0100 Message-Id: <20210304184839.24847-3-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210304184839.24847-1-michael@niedermayer.cc> References: <20210304184839.24847-1-michael@niedermayer.cc> X-CMAE-Envelope: MS4wfF1BT/GhxzqAebPnrFafqFg2ZUrDyCJfcLC595E8wW96n1bs2Xlh30V8ar8lomfwARmM9wLA2uucwgZJ4U/TNLb5FBlT7sxyPMiWpHODm1DPBWWVHcXg ViKylg8PThBJPDDnhD3OSIbbSiVwW/w4rERAf82qxOMRDqGAoDXfAN8j Subject: [FFmpeg-devel] [PATCH 3/7] avcodec/setts_bsf: Check timebase X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches MIME-Version: 1.0 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Fixes: Division by 0 Fixes: 30952/clusterfuzz-testcase-minimized-ffmpeg_BSF_SETTS_fuzzer-6601016202100736 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/setts_bsf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/setts_bsf.c b/libavcodec/setts_bsf.c index 5b6b256915..2558e38f51 100644 --- a/libavcodec/setts_bsf.c +++ b/libavcodec/setts_bsf.c @@ -152,7 +152,7 @@ static int setts_filter(AVBSFContext *ctx, AVPacket *pkt) s->var_values[VAR_PREV_OUTDTS] = s->prev_outdts; s->var_values[VAR_STARTPTS] = s->start_pts; s->var_values[VAR_STARTDTS] = s->start_dts; - s->var_values[VAR_TB] = av_q2d(ctx->time_base_out); + s->var_values[VAR_TB] = ctx->time_base_out.den ? av_q2d(ctx->time_base_out) : 0; s->var_values[VAR_SR] = ctx->par_in->sample_rate; new_ts = llrint(av_expr_eval(s->ts_expr, s->var_values, NULL));