2017-05-15 17:52 GMT+10:00 坚定前行 <[email protected]>: > cbr？need to get the sync key frame and resync > > Hi Powerpan,
I have no idea what resync is. What I'm doing is simply read packet/decode/encode/writepacket. There's one audio packet broken so decode fails on that packet, but all following packets can be decoded. I need to make up with silent samples otherwise video audio would go out of sync. How can keyframe and resync solve this problem? > > ---Original--- > *From:* "YIRAN LI"<[email protected]> > *Date:* 2017/5/15 15:47:48 > *To:* "This list is about using libavcodec, libavformat, > libavutil,libavdevice and libavfilter."<[email protected]>; > *Subject:* Re: [Libav-user] What should I do when avcodec_decode_audio4 > fails? > > > > 2017-05-15 17:29 GMT+10:00 坚定前行 <[email protected]>: > >> 根据视频都桢计算，framesxframe rate/sample rate >> >> Hi Powerpan, > > That only works for some codecs: those having fixed frame size. Codecs > with no fixed frame size can't be handled in this way, right? > > ---Original--- >> *From:* "YIRAN LI"<[email protected]> >> *Date:* 2017/5/15 15:24:21 >> *To:* "This list is about using libavcodec, libavformat, >> libavutil,libavdevice and libavfilter."<[email protected]>; >> *Subject:* Re: [Libav-user] What should I do when avcodec_decode_audio4 >> fails? >> >> >> >> 2017-05-15 17:12 GMT+10:00 坚定前行 <[email protected]>: >> >>> 解多少桢就插多少桢 >>> >>> Thanks powerpan, >> >> I think I need to know how many samples this packet contains to insert >> same number of silent samples, but number of samples is in decoded_frame, >> when decode fails, the fields in decoded_frame have no meaning. >> >> >> >> >> ---Original--- >>> *From:* "YIRAN LI"<[email protected]> >>> *Date:* 2017/5/15 14:31:58 >>> *To:* "This list is about using libavcodec, libavformat, >>> libavutil,libavdevice and libavfilter."<[email protected]>; >>> *Subject:* [Libav-user] What should I do when avcodec_decode_audio4 >>> fails? >>> >>> Hi there, >>> >>> >>> When running my program with an audio-broken file, at some >>> point avcodec_decode_audio4 returns < 0 which mean decode failure. >>> >>> It's okay for me to add silence to makeup the decode failure but how can >>> I know how many silent samples to insert? >>> >>> Thanks >>> >>> _______________________________________________ >>> Libav-user mailing list >>> [email protected] >>> http://ffmpeg.org/mailman/listinfo/libav-user >>> >>> >> >> _______________________________________________ >> Libav-user mailing list >> [email protected] >> http://ffmpeg.org/mailman/listinfo/libav-user >> >> > > _______________________________________________ > Libav-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/libav-user > >
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