On 2022-02-02 10:54 am, Gyan Doshi wrote:
On 2022-02-02 12:42 am, James Almer wrote:
On 2/1/2022 3:47 PM, Michael Niedermayer wrote:
On Sun, Jan 16, 2022 at 05:19:15AM +0000, Gyan Doshi wrote:
ffmpeg | branch: master | Gyan Doshi <ffm...@gyani.pro> | Wed Jan
12 20:57:59 2022 +0530| [bca30570d28bbaa07badadabf55ec3589201a82f]
| committer: Gyan Doshi
avformat/mpegts: add option max_packet_size
Makes maximum size of emitted packet user-tunable.
Default is existing 204800 bytes.
http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=bca30570d28bbaa07badadabf55ec3589201a82f
---
doc/demuxers.texi | 4 ++++
libavformat/mpegts.c | 11 ++++++-----
2 files changed, 10 insertions(+), 5 deletions(-)
Since this commit there is occasional memory corruption occuring
libavutil 57. 18.100 / 57. 18.100
libavcodec 59. 20.100 / 59. 20.100
libavformat 59. 17.101 / 59. 17.101
libavdevice 59. 5.100 / 59. 5.100
libavfilter 8. 25.100 / 8. 25.100
libswscale 6. 5.100 / 6. 5.100
libswresample 4. 4.100 / 4. 4.100
libpostproc 56. 4.100 / 56. 4.100
invalid fastbin entry (free)
doom/rtp-video: line 14: 15621 Aborted (core dumped)
./ffmpeg_g -bitexact -protocol_whitelist http,tcp,rtp,udp -i
http://127.0.0.1:8080/test.sdp -bitexact -acodec mp2 -ab 64k -y -t 1
-threads 1 $TMP/out.avi
Command exited with non-zero status 134
Is the demuxer used in this scenario mpegts or mpegtsraw? The new
option was added to the former but not the latter, yet if both read
MpegTSContext.max_packet_size, for mpegtsraw it will always be 0.
The option might need to be added to that demuxer too.
The init appears to be via avpriv_mpegts_parse_open in mpegts.c
which has this note above,
/* parsing functions - called from other demuxers such as RTP */
and in it, a few of the context fields are manually initialized. I
suspect hardcoding a value here may be enough.
Looks to be enough. Sent patch "avformat/mpegts: initialize
max_packet_size when sub-demuxer" to address this.
Regards,
Gyan
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