From: Kostya Shishkov <kostya.shishkov@gmail.com>
Date: Wed, 11 Feb 2026 17:39:11 +0000 (+0100)
Subject: avi: allow smaller strh chunk (as seen in really old AVI files)
X-Git-Url: https://git.nihav.org/?a=commitdiff_plain;h=9d76354f04a534fac53a83880b4ed67b8ca39448;p=nihav.git

avi: allow smaller strh chunk (as seen in really old AVI files)
---

diff --git a/nihav-commonfmt/src/demuxers/avi.rs b/nihav-commonfmt/src/demuxers/avi.rs
index 71d2104..44d68f8 100644
--- a/nihav-commonfmt/src/demuxers/avi.rs
+++ b/nihav-commonfmt/src/demuxers/avi.rs
@@ -61,7 +61,7 @@ struct AVIStream {
 
 impl AVIStream {
     fn parse_strh(&mut self, src: &mut dyn ByteIO, _strmgr: &mut StreamManager, _seek_index: &mut SeekIndex, size: usize) -> DemuxerResult<()> {
-        if size < 0x38 { return Err(InvalidData); }
+        if size < 0x30 { return Err(InvalidData); }
         validate!(!self.got_strf);
         let tag                 = src.read_tag()?; //stream type
         self.handler            = src.read_tag()?; //handler(fourcc)
@@ -76,12 +76,12 @@ impl AVIStream {
                                   src.read_skip(4)?; //buf size
                                   src.read_skip(4)?; //quality
                                   src.read_skip(4)?; //sample size
-        let _a                  = src.read_u16le()?;
+        /*let _a                  = src.read_u16le()?;
         let _b                  = src.read_u16le()?;
         let _c                  = src.read_u16le()?;
-        let _d                  = src.read_u16le()?;
+        let _d                  = src.read_u16le()?;*/
 
-                                  src.read_skip(size - 0x38)?;
+                                  src.read_skip(size - 0x30)?;
 
         // padding streams should be ignored
         if &tag == b"pads" {