Package: yorick-av Version: 0.0.4-1 Severity: normal Tags: patch Dear self,
FFmpeg complains (warnings) about unset VBV buffer size and buffer overflows when produgin MPEG 1 (.mpg) or MPEG2 (.vob) files. The resulting files may then play sluggishly (or not at all, i.e. frozen on first frame) at least in VLC. This patch sets an appropriate buffer size. Regards, self. -- System Information: Debian Release: 9.3 APT prefers stable-updates APT policy: (900, 'stable-updates'), (900, 'stable'), (500, 'stable-debug'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.9.0-5-amd64 (SMP w/8 CPU cores) Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8), LANGUAGE=fr_FR.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages yorick-av depends on: ii libavcodec57 7:3.2.10-1~deb9u1 ii libavformat57 7:3.2.10-1~deb9u1 ii libavutil55 7:3.2.10-1~deb9u1 ii libc6 2.24-11+deb9u1 ii libswscale4 7:3.2.10-1~deb9u1 ii yorick 2.2.04+dfsg1-6+b1 yorick-av recommends no packages. yorick-av suggests no packages. -- no debconf information
Description: Set VBV buffer size for MPEG1/2 files FFmpeg emits warnings when producing MPEG1/2 files and the VBV buffer size has not been set. The output files may then play sluggishly in VLC. This backported patch sets a VBV buffer size sufficient to hold one frame. Author: Thibaut Paumard <thib...@debian.org> Origin: backport Bug-Debian: coming soon Forwarded: not-needed Applied-Upstream: 0.0.5 Last-Update: 2018-03-06 --- This patch header follows DEP-3: http://dep.debian.net/deps/dep3/ --- a/yav.c +++ b/yav.c @@ -259,6 +259,17 @@ void yav_opencodec(yav_ctxt *obj, unsigned int width, unsigned int height) { obj->video_st->codec->width=width; obj->video_st->codec->height=height; + if (obj->enc->codec_id == AV_CODEC_ID_MPEG1VIDEO || + obj->enc->codec_id == AV_CODEC_ID_MPEG2VIDEO) { + AVCPBProperties *props; + props = (AVCPBProperties*) av_stream_new_side_data + (obj->video_st, AV_PKT_DATA_CPB_PROPERTIES, sizeof(*props)); + props->buffer_size = width*height*4; + props->max_bitrate = 0; + props->min_bitrate = 0; + props->avg_bitrate = 0; + props->vbv_delay = UINT64_MAX; + } av_dump_format(obj->oc, 0, obj->oc->filename, 1); if (obj->video_st) {
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