#1778: EIA-608 / EIA-708 Closed Captions disappear when transcoding/reencoding -------------------------------------+------------------------------------- Reporter: mikecheat04 | Owner: Type: enhancement | er.anshul.maheshwari@… Priority: wish | Status: reopened Version: git-master | Component: Keywords: cc | undetermined Blocking: | Resolution: Analyzed by developer: 0 | Blocked By: | Reproduced by developer: 0 -------------------------------------+-------------------------------------
Comment (by hemube): If the source has only single CC in 608/708 format then latest FFmpeg have the option to retain the 608/70d data after transcoding. == working file Media Info == {{{ Text #1 ID : 256 (0x100)-CC1 Menu ID : 1 (0x1) Format : EIA-608 Muxing mode : SCTE 128 / DTVCC Transport Muxing mode, more info : Muxed in Video #1 Duration : 20s 938ms Bit rate mode : Constant Stream size : 0.00 Byte (0%) Text #2 ID : 256 (0x100)-1 Menu ID : 1 (0x1) Format : EIA-708 Muxing mode : SCTE 128 / DTVCC Transport Muxing mode, more info : Muxed in Video #1 Duration : 20s 938ms Bit rate mode : Constant Stream size : 0.00 Byte (0%) }}} At the same time if the source has multiple CC streams then FFmpeg is not retaining the CC. == Not working file Media Info == {{{ Text #1 ID : 256 (0x100)-CC1 Menu ID : 1 (0x1) Format : EIA-608 Muxing mode : SCTE 128 / DTVCC Transport Muxing mode, more info : Muxed in Video #1 Duration : 26s 593ms Bit rate mode : Constant Stream size : 0.00 Byte (0%) Text #2 ID : 256 (0x100)-CC3 Menu ID : 1 (0x1) Format : EIA-608 Muxing mode : SCTE 128 / DTVCC Transport Muxing mode, more info : Muxed in Video #1 Duration : 26s 593ms Bit rate mode : Constant Stream size : 0.00 Byte (0%) Text #3 ID : 256 (0x100)-1 Menu ID : 1 (0x1) Format : EIA-708 Muxing mode : SCTE 128 / DTVCC Transport Muxing mode, more info : Muxed in Video #1 Duration : 26s 593ms Bit rate mode : Constant Stream size : 0.00 Byte (0%) Text #4 ID : 256 (0x100)-2 Menu ID : 1 (0x1) Format : EIA-708 Muxing mode : SCTE 128 / DTVCC Transport Muxing mode, more info : Muxed in Video #1 Duration : 26s 593ms Bit rate mode : Constant Stream size : 0.00 Byte (0%) }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/1778#comment:12> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker _______________________________________________ FFmpeg-trac mailing list FFmpeg-trac@avcodec.org http://ffmpeg.org/mailman/listinfo/ffmpeg-trac